AND MECHANICAL TELECOMMUNICATIONS ENGINEERING …

EUCI'RICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 5 8 4 P a r t 1 (By Command of the Lafence C o u n c i l ) Section 0

1 lha ~nf~rmmon IS nleocd t. 't.. Govamnrnt to the 3. fh*s d0rWtlOn m y ba d~sctorcd only w~rh~n the &fence nmp~plant Govsrnmnt for Da~z ,c t r e"~rponronly. hplnmcnt of the mtOunt Government, exapt rs O ~ ~ W I K

w h l r d by Utcu~trv of Refcna (Army) 2. Th~s mfomut~on murt b ncordrd the urn apnc of m r r t y

v o t e m a .I that . o l u b d h*.to bv tk UI Government. 4 Thm n f a n v n a wuv b wbmt to W I W ~ I V a e d

CLIsV':;MAN RADIO UK/PRC 351 AND UK/PRC 352

TECHNICAL HANDBOOK - FIELD REPAIRS

SECTION 0 - INDEX TO SECTIONS -.

E r r a t a

Note . . . T h i s P a g e 0 i s to be f i l ed i m m e d i a t e l y i n f r o n t of P a g e 1, I s sue 2 dated Nov 78.

1. The f o l l o w i n g a m e n d m e n t s must be made t o the regulation.

2. P a g e 1, T i t l e :

D e l e t e : 'STATION, RADIO, UK/PRC 351 AND UK/PRC 3 5 2 ' ,/ Inse r t : 'CLANSMRV RADIO UK/PRC 351 M D UI[/PRC 3 5 2 ' .

I ssue 1,

(By Command of the Defence Councll)

TELECQMMUNICATIom F 584 P a r t 1

Section 0

CONDlTlONS OF RELEASE

1. Tnu dormatlun n relelud by the UK Govunment k, the a. Tbll inlomuUon IMY be dl8c-d mlv dlhin (kc Defence I

rrclp~ent rmwrnmerrt lor Dcklvn purpow only. aputmcnt of tbe ndpknl Gowmnrent. except u other- authorhd by LUabW of Ddw1~8 (Amy).

2 Thu infornullon must bC accorded %he sune d t l ~ of mcwlt) prokction as that accorded thereto by the UK Government 4 Thh iofomutton n u y be mbicet W p h k l y owned *hu.

C AF)dSflC)rJ SW2ZW. MDIO. UK/PRC 351 AND U K ~ R C 352

TECHNICAL IIANDBOOK - FIELD REPAIRS

SECTION 0 - INDEX TO SECTIONS

Sect ion

0 INDEX TO SECTIONS 1 G E N a INFORMATION 2 RT 351 3 AMPLIFIER RF 20 WAIYP (AM 352) 4 SELECTIVE UNIT RADIO FRE&UENCY (7)

END of Sect ion 0

ELECTRICAL AND MECHANICAL ' ENGINEERING REGULATIONS

TELECOMMUNICATIONS F 5 8 4 P a r t 1

(By Command of the Defence C o u n c i l ) Section 1

I CONDITIONS OF RELEASE I 1 Thos onformatton IS released by the UK Government to the 3. Th~s onformatoon may be dosclosed only wlthln the Defence

reclDlent Gowrnment for Defenw purposes only. Department of the recoplent Government. except as otherwise authorlsed by Monistry of Defence (Army)

2 Thos lnformat~on must be accorded the same degree of securlty protectlon a that accorded thereto by the UK Government . 4 Thor ~nformatlon may be sublect to privately owned roghts

CLANSMAN RADIO UK/PRC 351 AND UK/PRC 3 5 2

TECHNICAL HANDBOOK - F I E L D REPAIRS

SECTION 1 - GENERAL INFORMATION

E r r a t a

N o t e . . . T h i s Page 0 i s t o be f i l e d i m m e d i a t e l y i n f r o n t of P a g e 1, I s sue 2 dated D e c 78.

1. T h e f o l l o w i n g a m e n d m e n t s m u s t be m a d e to the regulation.

2. P a g e 1 ' T i t l e : / D e l e t e : 'STATION, RADIO, UK/PRC 351 AND UK/PRC 352'

I/

Inser t : 'CLANSMA, RADIO UK/PRC 351 AND UK/PRC 352'.

I s sue 2, M a r 82 (14W) Page 0

(~fy Command of the Defence council)

TEI-IECOMMTJNICATIONS F 584 Part 1

Section 1

I CONDITIONS OF RELEASE

1. This information i. rehued by the UK G o m ~ l e n t to the 3. Thir infomution nuy be disclosed only r i b the Defence recipient Gomnment for Defence purvoaee only. Dcputment of (he recipient Government. except u othrnnire

authorirni by Mmistry of Dsftnce (Army). 2. Tbir infomution mwt bc accorded the ume d ~ e of security

proleetion n that accorded thereto by the UK Government. 4. Thr. inlonnrtion may be mb)cct to privately owned TI@*.

c I A ~ S M I W . -, RADIO, UK/PRC 351 AND UK/PRC 352

'ITCHNICAL HANDBOOK - FIELD REPAIRS

SECTION 1 - GENERAL INFORMATION

This regula t ion must be read i n conjunction with Tels F 582. Base repa i r information w i l l not be published as Part 2 of t h i s regulation. A separate Base Repair Information Folder w i l l be published and issued to nominated workshops,

Note: These Pages 1-5 supersede Tels F 584 Par t 1, Pages 14, lssug 1, dated Mar 77. 'f'he r e g l ~ l a f i o n - has been rev ised throughout.

GENERAL FBPAIR INFORHATION

Field r epa i r t e s t k i t (FRTK) (see Tels M 720)

1. When c a r r y h g out alignment, f a u l t diagnosis o r r epa i r s , the equipment under t e s t (EuT) is removed from its case, opened, and secured t o the t e s t . jig.

2. With the RT 351 secured t o the t e s t j i g , the frequency s e t t i n g switches (FSS) and system switch (SSW), which a r e controlled by knobs on the f ron t panel, a r e now controlled by s i m i l a r switch knobs on the t e s t jig. The remote panel assembly is f i t t e d t o the j i g as a complete item, thus the ope ra t i ono f remote switch (ROS) and the use of remote l i n e terminals remains unchanged,

3. The t e s t j i g is f i t t e d with two BNC coaxial sockets, marked RECEIVE and TRANSMIT respectively. Care must be taken t o connect external t e s t equipment t o the correct socket t o prevent possible damage.

Note: Because the R.ECEIVE and TRANSMIT sockets a r e separate , sidetone on - transmit w i l l only be obtained with the RT 351 system switch s e t t o * (NOISE ON), To check the complete sidetone f a c i l i t y , a connection must be made (using FRTK Item 6 ) between RECEIVE and TRANSMIT socket on the t e s t jig.

Use of t e s t r i g e lect ronic (TRE)

4. The TRE is f u l l y described i n Tels M 382, and no attempt is made i n t h i s document t o describe TRE functions. Two types of TRE e x i s t , one containing a Schlumberger r.f. s ignal generator and the other a Racal r e f . s igna l generator. The differences between the two types a r e explained i n Tels M 382.

Issue 2, Dec 78 (14W)

mLECOMMuNICATIONS F 584 Part I Section 1

E~CTRICAL AND MECHANICAL ENGINEERING REGULATIONS.

5. When referring to the test equipment, the following abbreviations are used throughout this document: *

Control supply CS Loudspeaker LS

Control test conditions CTC R.F. generator RFG

IFW AFG Clansman interface A.F. generator

Digital voltmeter DVM R.F. attenuator RFA

Frequency counter Counter Cathode ray oscilloscope CRO

Modulation meter MM Field radio test kit FRTK

6. The controls and terminations dn cS, CTC and IF(C) are referred to by the numbers shown in Tels M 382 Table 2003, eg the push on - push off switch marked EUT on the control, test conditions, is referred to as CTC 6. Instructions are given as 'Depress (or release) CTC 6'. Instructions for rotary switches are given as 'Set CTC 1 to CW Txt. Connections to terminations are given as 'Connect ....... to CTC 20'. 7. This documents details the TRE switch settings required to carry out each specific function. For specification testing each switch position l o detailed at the commencement of each test to allow any particular specification test to be carried out.

8. Range settings of individual test equipments (counter, DVM etc ) are not detailed unless specifically required. Instructions are given as 'Tune MM' o r 'DVM shall indicate' and correct operation and range selection is implied.

SPECIAL PROCEDURES

Local calibration of the modulation meter CT 409

9. The modulation meter (MM) is insufficiently accurate for some specification tests and alignment settings. Its accuracy can be improved to the required level by calibrating it using the radio frequency generator (RFG) and associated modulator (AFG) of the TRE, providing these instruments are within their specification. Proceed as follows:

a. Connect the r.f. output point of the RFG to the input point of the MM.

b. Set the RFG output to ImV e.m.f. at 46.025MHz.

c. Set the AFG to produce f MOD = lkHz and a deviation of *jkHz (AFG attenuator = 50mV) and make sure only one a.f. generator is active.

d. Tune the MM carefully and using its 10kHz scale check the deviation registered is approximately f5kHz.

e. If necessary, re-adjust the output level of the RFG and re-tune the MM to be sure the signal is adequate.

f. Taking the AFG attenuator as standard, note the MM readings for various settings of the AFG attenuator (eg AFG = 50mV = 25kHz MM = ... 1.

Page 2 Issue 2, Dec 78

EI;ECTRICAL AND MECHANICAL TELZCOMMITNICATIONS ENGINEZRING REGULATIONS F 584 Part 1

Section 1

g. Repeat sub-para f . f o r the 3kHz range on the MM.

h. Plot the MM e r ro r deviation against standard deviation.

Deviation measurement

10. Current provisioning of t e s t equipment does not allow simple and accurate measurement of the various components making up t o t a l deviation. The d i f f i c u l t y e x i s t s because i t is not possible i n a simple manner to d i f f e r - en t i a t e between the deviation caused by the transmit squelch tone (S) and the deviation caused by noise (N). Both sources a r e always present i n a sealed equipment and they could have the same order of magnitude, The problem i s minimised i n the following procedure which hinges on the a b i l i t y of the technician to assess the S/N r a t i o from observation of the MM demodulated output on a CRO. Proceed as follows:

a. Set the transmit channel frequency of the RT 351 a s demanded by the par t i cu la r t e s t s .

b. Do not apply a modulating tone t o the equipment, Observe the indicat ion on the MM (R) a f t e r tuning and making any correct ion fo r errors . R is due t o (S + N).

c. Adjust the CRO controls f o r a locked display of the demodulated S + N a t the MM audio output point.

d. Assess the r a t i o of S/N from observation of the CRO.

e. The spec i f ica t ion t e s t s a r e wri t ten i n terms of R and S/N and permitted l i m i t .

11. Assess the S/N r a t i o as follows:

Adjust the CRO t o display several cycles of the demodulated squelch tone (150~2) at a convenient Y amplitude. The peak posi t ive (or negative) value of S w i l l be seen t o increase and decrease about a mean value i n a way depender on the frequency and magnitude of the noise components. The mean peak value is the peak vdlue which would e x i s t i n the absence of noise. Estimate t h i s mean peak value i n terms of horizontal g ra t i cu le markings (S), Without fu r ther adjustment t o the CRO, observe the var ia t ion i n peak amplitude i n terms of horizontal g ra t i cu le markings (N). Permitted values of the S/N r a t i o vary with transmit frequency and i f the t e s t so demands, i t may be necessary t o repeat t h i s procedure when changing frequency.

12. To gain experience i n assess ing the s/N r a t i o i t may be found helpful as a prelude t o the foregoing procedure to observe the e f f ec t of modulating the RFG of the TRE with two tones, each producing a known deviation. For t h i s purpose:

a. Connect the REG t o the MM.

b. Connect the CRO t o the a.f. output point of the MM.

c. Set the RFG t o the required frequency and maximum output.

Issue 2, Dec 78

TEI;ECOMMUNICATIONS F 584 Part I Section 1

ELECTRICAL AND MECHANICAL ENGINEERING REGULATIONS.

d. Tune the MM to the RFG.

e, Modulate the RFGto produce known deviations with two tones, one simulating the squelch tone, should be 150Hz producing a deviation I in the range of kl.3kHz to 22.0kHz and a second tone, simulating the noise, should initially be IkHz producing a deviation similar to that expected from the noise (0 to fl.5kHz).

f. For various settings of S and N observe the CRO and estimate the S/N ratios.

g. Compare the estimated S/N ratios with the standard ratio from the RFG attenuator settings.

h. It must be remembered however, that the noise simulating tone can never be truly representative of the noise signal and while this imposes limitations, the procedure may nevertheless be found helpful in gaining experience.

1 . Transmitter spurious radiation,

a. Set TRE and EUT switches as given in Table I,

Notes: 1. A spectrum analyser is required to carry out these tests - and is issued to nominated workshops. Practical details of testing will depend on the type of analyser. Consult the appropriate handbook.

2. This test is to be carried out when a transmitter is suspected of causing interference to other equipments.

b. Using a suitable dispersion bandwidth of the spectrum analyser, record the maximum level of each harmonic of the test frequency up to 500MHz. The second and third harmonic shall be attenuated to a level not less than 36dB below the carrier level, and the remaining harmonics shall be attenuated to a level not less than 40dB below the carrier level.

c. Using a suitable dispersion bandwidth of the spectrum analyser, record the maximum level of non-harmonic related spurious emissions other than those frequencies within 21% of the transmitter carrier frequency in the band I to IOOMHz. These shall be attenuated to a level greater than 80dB down on the carrier level.

d. Repeat sub-para b. and c. for the following frequences:

67.950, 48.050 and 76.050MHz.


ELXTRICAL AND MECBANICAL ENGINEERING REGULATIONS

TELECOMMUNICATIONS F 584 Part 1

Section 1

Note.. . This Page 5/6, Issue 3 supersedes Page 5, Issue 2 dated Dec 78. A Warning has been included.

Table 1 - Transmitter spurious radiation t e s t , switch se t t ings

1 VEH 24 2 VEH V 6 Released (ON)

CW Tx AF LOAD 150 Released Released Depressed Released Released Released Released Depressed Released AF AF SIGNAL INT

EUT connections:

IF (C)

1 OC 3 Released 4 Released 7 Normal

CS 7 t o bat tery terminals ( i t e m 4) IF (C) 5 t o 22SK1 ( i t e m 10)

EVT

FSS 30050 SSW WHISPER ROS L

WARNING.. .

END of Section 1

'Issue 3, Jan 84 (14W) Page 5/6

XLFlCTRICAL AND MBXWICAL TELEX=~NICATIONS m- m T I O N S F 584 Part I (By Command of t h e Deferice Council) Section 2

STATION, RADIO, UK,/'PRC 351 AM) UK/PRC 352

T#TRNICAL HANDBOOK - FIm REPAIRS

SETION 2 - KT 351

Erra ta

Note: Th is Page 0 i s t o be f i l e d iamedia?ely i n f r o n t o f Page 1, Issue 2, dated Dec 78. - I , The following amendments must be made t o t h i s regula t ion,

2, Page P, para 64-b. (8)

After 'SSW t o W* i n s e r t *ROS t o L o r R'

~ E C ~ ~ I C U AND Wg=HANICU !I'XUZCMMUNICATIONS RGINEE;R3[M; R m J U T I O N S F 584 Part 1 (By Command of the Defence council) Section 2

5. Page 28:

STATION, RADIO, UK/PRC 351 AM) m c 352

Note: This Page01 i s t o be f f l e d immediately i n front o f Page 1 , Issue 2, dated Dec 78. - (The following amendments must be made t o the regulation.)

3 Page 2, Contents, Specification t e s t s :

Delete: 'Test 18 - Spurious responses., . . . . . . . . . . . . . . , . . 63'

4. Page 2, Contents, Alignment:

Delete: 'Receiver spurious response^,.......^.^^^^^^^^^^^^^^ 110'

Delete: 'Test 18 - Spurious responses' and a l l para 63.

Delete: '110 Receiver spurious responses* a l l text of para 110.

Issue 1, h n 79 ( 1 4 ~ )

. -.

EI~cwICAL ,AM) MECHANICJU !TELECOMMUNICATIONS ENGI~SER-ING .-IONS F 584 Part I (by Command of the Defence ~ounc i l ) Section 2

@ STATION, RADIO, DK/PRC 351 AND 352

SECTION 2 - IET 351

Errata

Note: These Pages 02 - 04 are t o be f i l e d imed ia t e ly in f ront of Page 1, - Issue 2 dated Dec 78.

(The following amendments must be made t o the regulation).

7. Page 12, para 46.b.(2):

Delete : ' *'. a Inser t : ' j C ' .

8. Page 14, Table 3, column headed EZT:

Delete: '*'. Inse r t : 'Jet.

9. Page 14, para 48.a., l i n e 2:

Delete : 'no power outputt . Inser t : 'a power output l e s s than 0.04 pW (1 -41 mv)'.

10. Page 21, para 55.a., l i n e 1: a

After 'IkfIzl inser t : ' ~ I C X ~ ~ .

11. Page 22, para 56.a., l i n e I :

After ' IkHz' i n se r t 'flC%*.

12. Page 27, Table 17, column headed EUT:

Delete : *' , Inse r t : 'St.

13. Page 27, para 62.b0(7):

Delete: *I,

Inser t : '9'.

14. Page 29, para 64,a. ( I 1:

a. Sub-para (b), l i n e 2 :

Delete: '*'. Inser t : 'Jtt ..

Issue I, Oct 79 (IN) Page 02

TELECOMMUNICATIONS E j E c r a ~ c ~ ~ m M G C ~ O A L - . P 584 Part 1 ENGINEERING R E m I O r J S Section 2

,'-5%- - b. Sub-para ( c ) , line I: a

After 'W' inser t : 'ROS t o L o r R, '. c. Table 19, column headed EUT:

Delete: W . krsert: '*'.

15. Page 9, para 64.b0(5), l i n e 2 :

Delete: '0.49 and 0.6V'. Inser t : '0.44 and 0.6y'.

16. Page 30, para 64.b.(6), l ine 2:

Delete: '0.5'. Inser t : '0.49'.

7. Page 31, para 66.a., l i n e 2: m

Delete: 'at'. Inser t : 'between'.

Delete: 'and El. Inser t : 'or D' .

18. Page 32, Table 22, column headed EUT:

Delete: w. Inser t : w'.

19. Page 33, para 68 :

a. Sub-para a. (3):

Delete: '20'. Inse r t : '15'. a After 'EIIT is' inser t : 'still'.

c. Sub-para b.(7):

After 'SJ!L' is' inse r t : 'still'.

d. Sub-para b.(8):

Delete : '14.6'. Insert: '15'.

20. Page 33, Table 23, column headed a:

Delete: Insert: cjt'.

- Page 03 Issue 1 , Oct 79

,=TRICAL AND MECHANICAL E~GINEERING REGmJLTIONS

TELEC 0-CAT1 ONS F 584 Part 1

Section 2

21. Page 34:

a. Table 24, column headed EOT:

Delete: w'. Inser t : ' j t ' ,

b. Table 24, column headed I F ( C ) :

Inser t : '2 Set fu l ly anticlockwise'.

c. Page 6g.b.(4), l i n e 2:

After 'IS' inser t : 'a counter indication of 47.975 MHz and Dm indication of 8 t o 14.5 mV.'

a. Pa.ra?l.a.(l), l i ne 2:

After '1kHz' i n se r t : @*I&'.

b. Table 26, column headed EUT:

Delete: '0'. Inser t : '*'.

23. Page 38, para ??.be,

a. Sub-para (9 1, l i n e 2 : t

Delete: ' l ess than 1%'. Inser t : 'not v is ib le ' .

b. Sub-para (101, l i n e 2 :

Delete: ' less than 1%'. Inser t : 'not v is ib le ' .

24. Page 38, Table 27, column headed I F ( C ) :

Inser t : ' 2 Set fu l ly clockwise'.

258mels

Issue 1 , Oct 79 Page 04

EUZTRICAL AND MECHANICAL W G I N ~ I N G REGULATIONS

TET,ECOMMUNI CAT1 ONS F 584 Par t 1

Section 2

Erra ta

Note: This Page 05 is t o be f i l e d immediately i n f ron t of Page 1, Issue 2 , - dated Dec 78.

(The following amendments must be made t o the regulat ion) .

25. Page 32, para 68.a. ( 2 ) :

Delete: '14.5 m4'.

I n se r t : '14 m A ' .

26. Page 34:

a. Para 6g.b.(4):

Delete: '14.5 mv'. Inse r t : ' 14 mV' . b. Para 69.b. ( 5 ) : Delete: '14.6 mV' .

Inse r t : '15 m V t .

I ssue I, Feb 80 ( 1 4 ~ ) Page 05

BIECTRICAL AND MECHANICAL TEIECOMMIMICATXONS EN-ING REGULATIONS F 584 Par t I

Section 2

@ ION, RADIO, OK/PRC 351 AND UK/PRC 352

TECBNICAL HANDBOOK - FIED =AIRS

SECTION 2 - RT 351

Erra ta

Note: This Page 06 is t o be f i l e d immediately in f ron t of Page I , Issue 2, - Dee 78.

27. The following amendments must be made t o the regulation.

28. Page 18:

a. Para 52, l i n e 6, in f ron t of 'Method1: Inser t : *b f .

b. Table 8, column headed CTC :

0 Delete: 'PUOT TONEt Inser t : 'MOD ST1.

Delete content of sub-para.

29. Page 19:

a. Table 9, column headed CTC:

Delete: 'PIWT TONE' Inser t : 'MOD ST1

b. Para 53.b0(4):

Delete: 'X0.I1 In se r t 'XI I

Delete content of sub-para.

30. Page 30: a. Para 64,b.(6), a f t e r AFI0A.D 1%:

Inser t : 'RCE t o L1

b. Para 64.b.(8):

Delete: '1/10th t o 1/18th1 Inser t : 1/6th t o l/1l1.

Issue I , k r 80 (I&) D Page 06

E I ; E C T R I C U AND M E C W C A L ENGINEIZING REGULATIONS

CLANSMAN RADIO WPRC 351 AND mc/PRC 352

T E C H N I C U HANDBOOK - FIELD REPAIRS

SECTION 2 - #r 351

~ C O ~ C A T I O N S F 584 Part I

Section 2

Note: This Page 07 is to be f i l ed immediately in front of Page 1, Issue 2 - dated Dec 78. (The following amendments must be made to the regula- t ion) -

I Page 7 , Tim:

Delete: 'STATION, RADIO, UK/PRC 351 AND UK/PRC 352'

Insert: 'CLANSMAN RADIO UK/PRC 351 AND mc/PRC 352'-

Issue 7 , Jun 80 (14W) Page 07

ELEETRICAL ANL, MECHANICAL TELF;COMMUNICATIOMS 'ENGINEERING REGUTATIONS F 584 Part 1

Section 2

CLANSMAN RADIO UK/PRC 351 AND UK/PRC 352

TECHNICAL HANDBOOK - FIELD REPAIRS

Er ra ta

Notes.. . (1) This Page b8, Issue 2 supersedes Page 08, Issue 1 dated Feb 82. Further

amendments have been included.

(2) The amendment at Para 32 should have been ca r r ied out under previous e r r a t a issue but is included here as it is still relevant.

(The following amendments must be made t o the regulat ion) .

32 Page 12, Sub para 46.a.(2): Delete: 'Less than 920 mA' Inse r t : 'Less tha r 300 rnA1 -

33 Page 56, Sub para 111.11.: Delete Sub sub paras (2) and (5). Inse r t : ' ( 2 ) Using a su i t ab l e insula ted probe through the new hole of -

the modified screening can, connect (9) 8 and ea r th t o C-IY; 16 and 17.'

1

Issue 2 , Sep 83 ( 1 4 ~ ) Page 08

ELECTRICAL AND MECHANICAL TELECOMMUNlCAnONS ENGINEERING REGULATIONS F584 Psut 1

Section2

CLANSMAN RADIO UK/PRC 351 AND UKIPRC 352 TECHNICAL HANDBOOK - FIELO REPAIRS

SECTION 2 - RT351

Errata

Note ... This Page 09 is to be filed immediately in front of Page 1, Issue 2, dated Dee 78.

Vhe fdlowing amendments must be made to the regulation).

34. Page 9, Para 28:

a) Sub-para 28.a:

Line 1 : Delete 'Battle antenna' and insert 'Antenna socket'. Line 2: After '... seal between antenna' delete 'assembly' and insert 'socket'.

b) New sub-para 28.j:

Create a new sub-para 28.j by inserting the following below sub-para 28.h: 'j.Remote terminals. An end cap for the terminal sliding tube is listed in the equipment IPC.'

c) Old sub-para 28.j:

Change sub-para reference 'j.' to 'k.'

a

-

Issue 1, Nov 93 PW 09

a

mSCTRICAL AW) &TLRXANICAL TELEC O W N I C A T I O N S BNG-m REGULATIONS P 584 Part 1 (BY Command o f t h e Defence Council) Section 2

STATION, RADIO, UI(/PRC 351 IM, UK/PRC 352

TECHNICAL HANDBOOK - F I E L D REPAIRS

SECTION 2 - BT 351

These Pages 1 -57 and 1 001 -1 006 supersede Tels F 584 Part 1 Pages 5-59, Issue 1. The regulation has been revised throughout.

G- ... ... 0 . . 0 . . ... 0 . . ... .. . Scope of repa i rs . . . ... . . . . . . . . . . . . Field repa i r t e s t equipment . . . . . . . . . . . . GEWUlL REPAIR I N F W T I O N Internal ident i f ica t ion . . . . . . . . . . . . . . . Labels ... ... ... ... ... ... ... ... Repainting . . . . . . . . . . . . . . . . . . . . . G E N m w BEPAIR INSlTRUCTIONS O p e n . the equipment . . . . . . . . . . . . . . . Fi t t ing and removal of RT 351 t o t e s t j i g . . . . . Re-assembly of mTT on front panel and web . . . . . . Removal and replacement of remote assembly from remote Removal and replacement of discrete components ... Removal and replacement of assemblies on motherboard Soldering techniques . . . . . . . . . . . . . . Replacement of desiccators . . . . . . . . . . . . Drying and sealing . . . . . . . . . . . . . . . ... Mechanical repa i rs . ... ... ... ... ... S P E C I F I C A T I O N TESTING General .. . .. . . . . .. . .. . .. . .. . .. . Connection of equipment under t e s t t o TRE ... ... SFEX I F I C A T I ON TESTS Test 1 -Current consumption ... ... ... ... Test 2 - Transmitter power output in to 50(1 load ... Test 3 - Transmitter -bit . . . . . . . . . . . . . Test 4 - Transmitter power output *om b a t t l e antenna Test 5 - Unwanted deviation . . . . . . . . . . . . Test 6 - Deviation, noise +1506Iz . . . . . . . . . Test 7 - Deviation, 1lrHz . . . .. .. . . . . Test 8 - Modulation control ... ... ... ... Test 9 - Variation of deviation .. . . . . . . . . . . T e s t l o - S i d e t o n e . ... ... ... ... ... Test 11 - Sidetone inhib i t . . . . . . . . . . . . Test 12 - Accuracy of radiated car r ie r ... ... Test 13 - Spurious radiat ion .. . . . . . . . . . . Issue 2, Dec 78 (I-)

I I

0 . . 0 . . 4 ..* ... 5 ... ... 6

... 0 . . 7 ... 0 . . 9 0 . . ... Uc

panel ... 26 0 . . - 0 . 28 m e . ... 29 0 . . 0 . . 31 0 . . ... 36 0 . . 0 . . 37 ... ... 3 9

EC ObMJNICATIONS ELECfaICAL AND MEXANICAL 84. Part I ENG-IM; B F ~ T I O N S

Section 2

CONTENTS ( cont )

............... Test I 4 . Receiver seni t iv i ty ..................... T e s t l 5 - L i m i t i n g ...... Test 16 . Squelch sens i t iv i ty i 6mz in terna l ...... I 1 Test 17 . Squelch sensi t ivi ty IfjOHz external Test 18 . Spurious responses . . . . . . . . . . . . .~~ Test 19 . AoF- power output and dis tor t ion . . . . . . ~ ~ ~ Test 20 . Low bat tery warning . . . . . . . . . . . . . .~ .................. Test 2l . Call output Test 22 . DOC . voltages t o l i n e and 22SK2 pin C ~ ~ ~ . . ~ Test 23 . Remote l i n e currents . . . . . . . . . . ~ . ~ . ~ Test 24 . Remote l i n e resistance ............ Test 25 . Aut o-rebroadcast operat ion. local-remote ... Test 26 = Line modulation sens i t iv i ty . . . . . . ~ ~ . ~ ~ ~ ..................... Test 27 . Intercom FAULT FINDING ........................... General Use of f i e l d repair t e s t k i t . . . . . . . . . . . .~ .~ Connection of equipment on t e s t j i g t o !EtE . . . ~ ~ ~ ~ ~ ~ ALIGNMENT ........................... General Functional check . . . . . . . . . . . . . . . . ~ ~ ~ ~ ~ .................. Alignment procedures

Converter output voltages . . . . . . . . . . . . ~~~ Oscillator alignment . . . . . . . . . . . . . ~ . ~ ~ ~ ............... Loop amplifier alignment Reference osc i l la tor . . . . . . . . . . . . . . . ~ ~ ~ Frequency selection . . . . . . . . . . . . . . ~ . ~ ~ ~ Transmitter deviation due t o microphone input . . . ~ ~ ~ ~ o u 4 / w h i s ~ e r control . . . . . . . . . . . . . . . .~~~ ................... Moduletion control Modulation response . . . . . . . . . . . . . . . ~~~ Modulation dis tor t ion . . . . . . . . . . . . . . . ~~~ Variation of deviation with channel eequency . . . . .~ Transmitter deviation due t o 15mz in terna l tone ... Receiver modulation set t ing . squelch tone end deviation .................. Transmitter output Spurious radiat ion . second harmonic ......... Receive audio output . . . . . . . . . . . .~ . . .~~ Receive sens i t iv i ty . . . . . . . . . . . . ~ . . ~ ~ ~ Signal t o noise + noise check ............ ......................... Limiting Receiver spurious response . . . . . . . . . . . .~~~ Squelch se t t ing . . . . . . . . . . . . . . .~ . .~~~ Remote panel voltages . . . . . . . . . ~ . . ~ . ~ ~ . ~

Para .

97 98 99

100 101 1 02 I 03 l a b 105 106 107 108 109 110 111 112 '

TABLES . Table . ......... I Field repa i r t e s t equipment f o r BT 351 4

2 Test I switch set t ings . . . . . . . . . . . . ~ . . ~~~ 13 3 Test 2 switch set t ings . . . . . . . . . ~ ~ ~ ~ . ~ ~ ~ ~ 14 4 Test 3 switch set t ings . . . . . . . . . ~ . . . . . ~~~ 15 5 Test 4 switch set t ings . . . . . . . . ~ ~ ~ . ~ ~ ~ ~ ~ . 15 6 Test 5 switch sett inga . . . . . . . . . . . . ~ . .~~~ 16

Page 2 Iseue 2. Dec 78

ELEmRICAL AND MEcmCAL lmac &NGINERING REGIGATIONS ~ 5 8 4 R art I

Section 2

Table - Page

Test 6 switch settings . . . . ... ... ... 17% Test 7 mitch settings . . . ... . .. .. . .. . ... .. . 18 Test 8 switch settings . . . . ... ... ... 1 9 Test 9 switch settings ... ... ... ... ... ... ... 20 Test 10 switch settings ..- ... ... ... ... ... ... 21 Test I7 switch settings . . ... ... ... ... ... 22 Test 12 switch settings ... ... ... ... ... ... ... 23 Test14switchsettings . . . . . ... ... Uc Test 15 switch settings . . ... ... ... ... ... 25 Test 16 switch eettings .. . . . . . . . .. . .. . . .. . .. 26 Test 17 sritch settings . . . . ... ... ... 2 7 Test 18 switch settings ... ... ... ... ... ... ... 28 Test 19 switch settings .,. ... ... ... . ... .., 2 5, Test X) sritch settings . . . . ... ... ... 30 Test 21 switch settings ... ... ... ... ... ... ... 31 Test 22 twitch settings ... ... ... ... ... ... .*. 32 Test 23 switch settings . ... ... ... ... ... ... 33 Test 24 switch settings ... ... ... ... ... ... ... 34 Test 25 switch settings . . . ... ... ... ... ... 35 Test 26 switch settings . . ... ... ... ... ... 37 Test 27 switch setti- . . . ... ... ... ... )s RT 351 fault diagnosis ... ... ... ... ... ... ... 40 Arnctional check switch settings ... ... ,.. ... ... ,43 ' Alignment procedure switch settings ... . . ... +5 '

Oscillator alignment test data ... ... ... .-. ... -46 Ageing pins, frequency error correction ... ... .,, ... 47 Modulation response limits ... ... ... ... ... ... 50 RT 351 voltage and signal levels ... ... ... ... ... 1001

1. YARNING This equipment uses components containing beryliium or beryllium oxide. In certain circumstances they can constitute a hazard to health. Before working on the equipment, consult Gen K 0% - Beryllium Toxic Hazard in Electronic Equipments which gives general information, handling and disposal instructions.

Scope of repairs

2. Repairs 'at F'ield workshop level will be confined to the replacement of faulty assemblies and certain diacrete components as listed in fils F 582 hnble 2001.

Field repair test equipment

3. The equipment6 detailed in Table I ere required to carry out Field repairs, testing and alignment.

Issue 2, Dec 78 M e 3

TET;IECOMMUNICATIONS ELECTRICAL AND HECHANICAL F 584 Part 1 ~ I N E l r 3 R I N G ~ T I O N S Section 2

Table 1 - Field repair t e s t equiplaent fo r RT 351 0 - tem - 1

2

3

4

5

6

-

Cat No Designation

Test r i g electronic equipent

Test k i t radio f i e l d repa i r RT 351

Hidtimeter s e t CT498A

Tool k i t telecom (Technician)

Tool k i t telecom (supp)

Desoldering s e t e l ec t r i ca l

GENERAL REPAIR INFORMA!FION

Iuternal ident i f icat ion

Purpose and remarks

Contains t e s t equiplaent together with all connectors and control units t o carry out specification testing, alignment and f a u l t finding.

Fault finding and alignment of RT 351 (open) (see Tels n 720).

Fault finding on RT 351 (open:

Used on motherboard soldered connections.

4. The screws used t o secure the motherboard t o the web are indicated by a green circle. Iuternal t e s t points are ident i f ied by the i r c i r cu i t references, TP1, TP2 etc.

1

5. Replacement of internal and external labels , when necessary, w i l l be carr ied out at Field level.

6. A t Field workshop level , re-touching of damaged surfaces may be carried out, but not re-painting. Only the following paints a r e t o be used:

a. HIa/8010-99-224-2079 Paint priming, 13 l i t r e pack,

b. Hla/8010-99-224-8663 Paint finishing , polyurethane, matt f in ish , deep bronze green, 13 l i t r e pack.

-

Note: These a re two-part paints which must be mixed i n the proportions shown - on the pac-g. Do not mix more bhan is n e c e s s q as its mixed l i f e is 8 hours at 20 C and 4 hours at 33 C. Do not apply the paint in low temperatures o r i n high humidities.

~ssue 2, Dec 78 W e 4

A10

GENERAL REPAIR INSTRUCTIONS

Section 2

Opening the equipment

7. % remove the RT 351 from its cme, proceed ae follows:

a. Set frequency se t t ing switches (FSS) t o 30000.

b. Set system switch (SSW) to 0 (off).

c. Remove remote assembly by undoing the four helagon socket captive screws securing the remote casting t o the sleeve. b e cast ing away from sleeve and withdraw 2SKI from 23PLl (2SK1 is located at the end of the motherboard f l e f ib l e ) .

d. Note position of , and extract , the two sachet-type desiccators.

e. Remove sleeve by undoing four captive screws securing sleeve to front panel.

f . Identify the receiver s ide of the equipment containing assemblies 5, 6, 7 , 9, 13 e tc (see Tels F 582 R g 2002). Disconnect r.f. connector 17PL1-5SK1.

60 Born the t r w i t t e r s ide of the equipnent, ident i fy and remove the p i l l a r re taining screw located between the f ront panel m d assembly 17 (adjacent to connector r e f . No 2). -

h. On the receiver s ide , remove s i x p i l l a r re taining screws ident i f ied by a green circle . !he receiver s ide is noy ,free from =the- web.

j. Remove pul l off connector at rear of ba t t l e antema socket.

k. Unsolder the following leads; (identified i n Tels F 582 R g 2004):

(1) A t p.c.b.,lead from 50Q antenna ~ o c k e t .

( 2 ) A t p.c.b., two leads from (1712.

1. Remove pul l off connector, coloured-red, t o 2PLl.

m. Remove a l l re taining screws, encircled green, i n the f o l . ~ w i n g order :

(1) !Fvo captive p i l l a r screws through assembly 18.

(2) Five captive screws through a~sembly 16.

(3) Tro p i l l a r screws adjacent t o =I.

(4) Tro p i l l a r .crews adjacent to 2HL1.

~ O N M U N I C A T I O N S F 584 art I Section 2

ELECTRICAL AND l4EXHAMCA.L ' '

ENGINEERING R E G d ~ 0 N S :

( 5 ) h e p i l l a r screw between assemblies 14 and 19.

(6) One p i l l a r screw adjacent to assemblies 14 and 18.

n. Remove the four screws on the front panel near the frequency se t t ing switches.

p. Remove the four screws on the front panel near the sgstem switch and ease the switch assembly away from rear of front panel.

8. The motherboard and f lexibles are now f ree from the front panel and web. Note carefully the methods of folding the fleldbles to the two switch assemblies . It cannot a be over-emphasised that incorrect folding o r the use of undue force can easi ly cause damage to the f lexibles and switch assemblies.

F i t t inn and removal of RT 351 t o t e s t jiq

9. Remove the motherboard assembly from the front panel and web (para 7)

10. Remove tool r o l l from FRTK tool box, and supply protection uni t (m) from t e s t jig.

11. Ensuring tha t the perspex doors on the t e s t j i g a re closed, place j i g on bench with doors downwards.

12. On t e s t j ig , s e t FSS switch knobs to 30000 and Smknob t o 0.

13. Q1 EVl!, inspect FSS and SSW assemblies and ensure tha t p las t ic dots on switch ro tors and assembly body are coincident.

14. Place the opened and unfolded E;UT, assembly s ide uppermost, on the t e s t j ig , with 22PL1 adjacent to remote *el tes t . Ensure that the Sm f lex ib le vir ing is above and between the receive and traasmit s ides of the motherboard.

15. Using four knurled p i l l a r screws from FRTK tool r o l l , secure the tr&it side of the motherboard to t e s t j ig , using the holes i n motherboard

s WL?, 18, 17 and 10. Eghten captive screws i n

ed p i l l a r screws from tool r o l l , secure receive s ide of ig , using holes adjacent t o assemblies 6, 8, 11 and 13.

Ira locate holes i n motherboard with respective holes i n t e s t j ig , i t may be necessary to push the receive side towards the secured transmit s ide of the m.

17. Fold f lex ib le I t o the poeition occupied when E(rr was secured to front panel. h c a t e FSS assembly t o rear of frequency switch knobs on t e s t j i g and secure with two captive knurled screws. k u r e that all four switches a r e operating.

18. h c a t e EUT system switch behind system switch knob on t e s t j ig, and secure using tvo captive knurled screws. Ensure that svi tch is operating.

A1 2 Issue 2, Dec 78

' E3[3jX=TRICAL AND MECHANICAL T E L I E C ~ ~ T I U N S - ENGINEERING R E m T I O N S F 584 art I

1 . Connect the

a. SK3to

b. SK6to

c. PL3 to

Section 2

following test jig connectors to EUT as shown:

PL1 (battery input)

20. fit EOT remote casting, with wire stripper uppermost, to bracket on test jig and secure using four knurled captive screws. Connect socket on flying leads from remote panel test box to 23PLl on EUT remote panel.

21. If equipnent is to be used on an unprotected supply, connect supply protection unit to battery input terminals on test jig.

22. If equipnent is to be used on TRE (protected supply) connect supply lead (TRE item 4) from CS7 to battery input terminals on test jig.

23. Removal of equipment from test jig is achieved by carrying out the above instrw tions (paras 9-22 ) in reverse order.

Re-assembly of EUT on front panel and web . *

24. Re-assembly is essentially carrying out, in reverse order, the procedure contained in para 7 but the instructions are repeated to take account of the minor differences.

?.

Note: !he flexibles must be handled with extreme careand undue for - not be used, particularly vhen fitting switch assemblies to the front

25. a. Inspect web ana,ensure that red flying lead is connected to IPLI, and that 1PL2 is connected to earth.

b. Place the transmit side of the motherboard on the web. The correct side may be ascertained by ensuring that FSS assembly is on same side as FSS knobs on front p e l .

c. Ensure that two leads (l7PLl and battle antenna connector) are fed through appropriate holes in web.

d. Ensure that FSS knobs on front panel are set to 30000 and that on FSS switch assembly dots on switch rotors and assembly body are coincident.

e. Fold flexible 1 around FSS assembly in correct manner, and secure behind front panel using four slot-headed screws.

Note: Difficulty may be experienced in carrying out this operation. - A suggested method is to obtain slight purchase with tvo d i ? ~ ? ~ d l y - opposite front panel screws and ensuring that all four freq-aency ewitches are correctly located (verified by listening for a click as each switch is rotated) before tightening all four screws.

Issue 2, k c 78

section 2

EUCTRICAL AND X E W C A L ENGINEEBING REGULATIONS -

f . Connect lead (push on connector) t o 2PL1. 0 g. Secure transmit s ide to web but do not tighten securing screws u n t i l a l l have been correctly located as follows:

( I ) !ho, through assembly 18. L

(2) Five, through assembly 16.

3 Two, adjacent t o 2IK1.

a1 . emblies 14 and 19.

( 6 ) One, adjacent t o assemblies 14 and 18.

h. Re-solder leads removed i n para 7 ' .

j. Connect lead to r ea r of ba t t l e antenna.

k. E n m e system switch knob on front panel is s e t t o Om, and that two dots on switch assembly p las t ic mouldings a re coincident. Fold motherboard f lexible i n the correct manner and secure system switch t o rear of front panel by four front panel screws. The same precautions and procedures should be taken as with the FSS (sub-para el .

1. Fold receive s ide of EOT around web, and secure using s i x p i l l a r screws. From transmit s ide of web, inser t p i l l a r screw adjacent to assembly 17.

m. Connect 17PL1 to 5SKl. *

n. Tighten a l l securing screws. Check operation of f ront panel switches and ensure tha t 2IX1 is undamaged.

p. Inser t s e t into sleeve casting, emuring that rubber sea l is i n ion. Secure using four hexagon socket captive screw e q. Inser t two desiccators (para 7d).

c. Replace remote assembly as follows: - I

(1 ) Connect 2SK1 t o 23PLl.

(2) W e tha t rubber sea l is i n position.

3 Secure remote assembly to sleeve using four captive screws.

Issue 2, Dec 78

A14

E L E C Z ! R I ~ AND WECHANICAL m1-G ILMHJLATIONS

TELECOMDXICATIOE F 584 Part I

Section 2

Removal and.replacernent of remote assembly from remote panel

26. a. Remove hexagon nuts securing audio sockets 22SKl and 22SK2.

b. Set ROS t o L and remove four screws securing switch assembly to panel.

c. Unsolder leads connected to remote terminals.

d. Remove four screws (encircled green) securing remote assembly to panel, and withdraw complete assembly.

27. Replace i n reverse order, enrmring tha t the p l a s t i c dots on the ewitch assembly a re coincident.

Removal and replacement of discrete components

28. a. Bat t le antenna. Secured t o the front panel by four hexagon socket captive screws, with toroidal rubber sea l between antenna assembly and front panel,

Itssue 2, Dec 78

b. Battery terminals. Qty 2, push-fit i n s ide of f ront panel. *

c. Latch assembly (battery cl ips) . One f i t t e d t o s ide of f ront panel, and one on remote assembly. Removal is by extracting pivot pin.

d. Knob designation. Four FSS and one SSW on front'panel, one ROS on remote assembly; secured by c i r c l i p and washer. On replacement, &. ' ensure that rubber sea l s a re correctly f i t t ed .

e. Remote switch. Unsolder from remote f lex ib le using desoldering tool. 5

f . 50Q antenna socket. Secured to front panel by four screws. , Soldered connection a t rear of socket.

g, Socket e l ec t r i ca l SKI). Secured to motherboard by two screws and nuts. Unsolder from motherboard using desoldering tool.

h. Audio sockets (22S~1, 2 2 5 ~ 2 ) . Secured t o remote casting by hexagonal nut. Unsolder connections t o remote f lex ib le using desoldering tool.

j. A l l other discrete components are replaced using normal techniques.

Removal and replacement of assemblies on motherboard

29. 'Po remove any assembly mounted on the motherboard, unsolder all connections on o r inside the assembly boundary l i n e s marked on the mci:her- board. When a l l connections a r e completely solder f r ee , remove any assembly securing screws which a re located on the motherboard s ide, and l i e on o r within the assembly boundary l ines . Gently ease the assembly can and assembly avay from the motherboard. 'Po assist i n the removal of assemblies 7, 9 and 19, a cord is f i t t e d t o the assembly cans.

TELECOMMUNICATIONS EL;ECPIICAL AND llqx@xCAL F 584 mt I ENGINEXRING BEGQATIONS Section 2

30. !Po replace an assembly, ensure tha t the assembly connection and securing can pins a re s t raight . Offer the assembly to the motherboard, and ensure

@ that all pins protrude through the i r respective holes. Inser t the assembly securing screws. &fore fully tightening, e w e that all pins a re located centrally through t h e i r respective holes, and do not touch the land around the hol'es. Using suction soldering tool , solder all connections.

Soldering techniques

31. Ihe physical s i ze of the s e t and the close promimity of adjacent soldered connections demande extreme care when desoldering o r soldering within the equipent , Prolonged application of heat could cause damage t o the motherboard and f lexibles , particularly when desoldering assembly pins,

32. The suction soldering tool must be used fo r all desoldering on the motherboard to prevent solder running down assembly pins t o the other s ide of the motherboard, thus making removal of an assembly extremely d i f f i c u l t and possibly causing damage t o the assembly or equipnent.

33. When using the suction soldering tool , select the soldering head compatible with the s i ze of joint required. To avoid any contact with

a adjacent soldered points o r tracking the actual b i t diameter should not be greater than the land around the pin to be desoldered.

9. Vhen resoldering module pins, solder should not be allowed t o build-up on the joint, This is part icular ly important where the connection l i e s under a flexible when the equipnent is folded i n its case.

35. The suction soldering tool must be carefully maintained. The hole i n the b i t must be kept c lear and the extracted solder sump emptied regularly.

Caution: It is essent ial tha t tfie ac mains supply t o the suction soldering tool should be not l e s s than 225V, or d i f f icu l ty in desoldering wi l l be experienced.

Replacement of desiccators

36, Rro desiccators ( ~ e e i c c a t o r s , Silica-gel, Sachet Style B2) are placed between the sleeve and assembly cans (para 7d). New desiccators must be f i t t e d whenever an equipnent hae been opened.

0

Dryinu and sea l ing

37- On receipt of an equipnent for repair, adopt the following procedure:

2 a. Ressu r i se the equipnent t o 5 lbf/in using dry air.

b. Using the leak locator carry out a dip t e s t i n a water tank t o check fo r operation of spindle sea ls or garrkets, The addition of a wetting agent wi l l assist i n the detection of leaks.

c. Open equipment i n the dr ies t possible conditions and carry out a l l obvious repairs and replacements.

Page 10 82 Iseue 2, Dec 78

I

ELECTRICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 584 Par t 1

Sect ion 2

Note.. . These Pages 11-14, Issue 3, Supersede Pages 11-14, Issue 2, dated Dec 78. Sub-paras 46.1, 46.2 and 48.1, and Table 3 , have been corrected.

37.4 Place the opened equipment i n the dehumid i f ie r (see Tels M 602) and d ry f o r a t l e a s t one hour a t 50 O C w i t h d ry a i r from the pump passing

# through the oven.

4 37.5 A f t e r cool ing, e l e c t r i c a l l y t e s t t he equipment and c a r r y ou t any repai r s and r e a l ignment necessary.

37.6 As soon as poss ib le a f t e r real ignment, p lace t h e equipment i n t h e oven f o r 15 mins a t 50 O C .

37.7 F i t new s i l i c a - g e l desiccators.

37.8 F i t new gaskets .as. requ i red a f t e r smearing w i t h grease (XG 27 reseal t he equipment i n i t s case.

37.9 Connect t he lead l o c a t o r t o the equipment and pressur ize t o 5 1 b f / i n 2

a us ing d ry a i r from the dehumidi f ier .

37.10 Repeat d i p t e s t . There s h a l l be no a i r bubbles.

37.11 D e t a i l s of t ime constant t e s t i n g i s g iven under Base Repair I nspec t i on Standards.

38 Toroidal rubber seals a re f i t t e d t o the equipment i n the f o l lowing pos i t i ons :

B a t t l e antenna

Frequency s e t t i n g swi tch knobs

System swi tch knob

Seal i n g p lug (on f r o n t panel

Between f r o n t panel and sleeve

Between remote panel cas t i ng and sleeve

Remote swi tch

50 Q antenna

Mechanical r e p a i r s

39 Mechanical r e p a i r s t o the RT 351 are de ta i 1 ed i n para 28. Repairs t o accessories are de ta i 1 ed i n Tel s F 583.

SPECIFICATION TESTING

General

40 Due t o the l i m i t e d f r o n t panel i n ons avai lab1 e on the RT 351, s p e c i f i c a t i o n t e s t i n g w i 11 be c a r r i e d s an i n i t i a l check wheneyer an equipment i s received i n t o F i e l d workshops. I n t e r p r e t a t i o n o f spec1 f i c a t i o n t e s t r e s u l t s w i l l form the bas is f o r f a u l t d iagnosis which are d e a l t w i t h i n para 73.

Issue 3, Jun 91(lq w ) Page 11

-'TELECOMMUNICATIONS ELECTRICAL AND MECHANICAL F 584 Par t 1 ENGINEERING REGULATIONS Sect ion 2

41 Spec i f i ca t i on t e s t i n g w i l l be c a r r i e d ou t w i t h the equipment sealed, us ing e i t h e r t he Automatic Test Equipment (ATE, see Par t 3 o f t h i s regu la t i on ) o r the Test Rig E lec t ron i c (TRE).

42 The s p e c i f i c a t i o n t e s t s us ing the TRE f o l l o w a l o g i c a l sequence, b u t t e s t i n g i s n o t sequent ia l , and TRE and EUT swi tch se t t i ngs are repeated a t t he commencement o f each t e s t . This a l lows any p a r t i c u l a r t e s t t o be c a r r i e d ou t i n i s o l a t i o n , and a l so enables t e s t r e s u l t s obta ined us ing ATE t o be rechecked us ing the TRE.

Connection of-equipment under t e s t (EUT) t o the TRE

43 Set SSW on EUT t o 0 ( o f f ) . Using connectors 1 i s t e d i n Tels M 382 Table 2001, connect as f o l lows:

43.1 Using i t em 4, connect CS 7 t o b a t t e r y te rmina ls 1PL1, 1PL2 on EUT, ensur ing co r rec t p o l a r i t y .

43.2 Using i tem 7, connect CTC 20 t o 50 Q antenna socket (1SK1) on EUT.

43.3 Using i t e m 10, connect 1F (C) 5 t o audio socket 22SK1 on EUT.

44 The above connections, together w i t h any o thers requi red, are repeated f o r each s p e c i f i c t e s t .

45 On - the TRE, a1 1 power switches must be s e t t o ON, and the equipment a1 lowed t o warm up fo r approximately 20 min ( s t a b i l i z a t i o n t ime).

SPECIFICATION TESTS

Test 1 - Current consumption

46 46.1 L imi ts . With the d.c. supply se t t o 24 k0.2 V, t he cu r ren t consumption o f t he EUT s h a l l be:

46.1.1 Less than 125 mA on receive.

- 46.1.2 Less than 890 mA on both h igh and low bands t ransmi t .

46.2 Method

46.2.1 Set TRE and EUT switches as g iven i n Table 2. Note DVM i n d i c a t i o n which s h a l l be 24 50.2 V.

46.2.2 On EUT, s e t SSW t o * and note no ise heard i n LS.

46.2.3 Set CS 2 t o VEH A and note DVM i n d i c a t i o n which s h a l l be 12.5 mV max. (mV x 10 = mA).

- 46 :2.4 Set CTC t o CW Tx (Tx ENABLED Lamp i 1 1 umi nated) . Note counter i n d i c a t i o n which s h a l l be 30.050 MHz. Note DVM i n d i c a t i o n which s h a l l be 89 mV max.

Page 12 Issue 3, Jun 91

ELECTRICAL AND MECHANICAL ELECOMMUNICAT IONS ENGINEERING REGULATIONS F 584 Par t 1

1 VEH 24 2 VEH V 6 Released

Sect ion 2

Table 2 - Test 1 swi tch s e t t i n g s

CTC

Rx FM AF LOAD 150 Re1 eased Re1 eased Depressed Re1 eased Re1 eased Re1 eased Re1 eased Depressed Re1 eased R F A F SIGNAL INT

EUT connections :

I F ( C )


CS 7 t o b a t t e r y te rmina ls ( i t em 4) CTC 20 t o 50 0 ANT ( i t em 7) I F ( C ) 5 t o 22 SKI ( i tem 10)

EUT

FSS 30050 SSW 0 ROS L

46.2.5 Set FSS on EUT TO 48050. Note counter i n d i c a t i o n which s h a l l be 48.050 MHz. Note DVM i n d i c a t i o n which s h a l l be 89 mV max.

Test 2 - Transmit ter power ou tput i n t o 50 Q l oad

47 L i m i t s

47.1 With a d.c. supply vo l tage o f 22 k0.2 V, t he t r a n s m i t t e r power ou tput s h a l l be no t l ess than 3 W a t a l l permi t ted frequencies.

47.2 With the d.c. supply vo l tage s e t t o 32 +0.2V, t he t r a n s m i t t e r power output s h a l l be n o t g rea ter than 6.8 W a t a1 1 permi t ted frequencies.

Note.. . Using the TRE t o measure r.f power output , (DVM i n d i c a t i ~ n ) ~ = Power Output on a l l DVM ranges except 180 V and 750 V, eg 1.7 V = 3 W, 2.6 V = 6.8 W.

47.3 Method

47.3.1 Set TRE and EUT switches as g iven i n Table 3. Note DVM i n d i c a t i o n and ad jus t CS 4 u n t i l DVM i nd i ca tes between 21.8 and 22.2 v.

47.3.2 Depress CTC 7. Note t h a t Tx ENABLED lamp i l l u m i n a t e s and noise i n LS i s muted. Note counter d i s p l a y which s h a l l be EUT frequency. Note DVM i n d i c a t i o n which s h a l l be no t l ess than 1.7-V.

Issue 3, Jun 91 Page 13

. *!'"" F' TELECOMMUNICATIONS ELECTRICAL AND MECHANICAL

F 584 Par t 1 ENGINEERING REGULATIONS Sect ion 2


1 VEH 14-33 2 VEH V 6 Released

(ON)

CTC

1 CW Tx 2 AF LOAD 150 3 Released 4 Released 5 Depressed 6 Released 7 Released 8 Released 9 Released

10 Depressed 11 Released 12 RF 13 AF 14 SIGNAL 26 INT

1 OC I FSS 30050 1

IF(C)

3 Released 4 Released 7 Normal

EUT

SSW * ROS L

EUT connections:

CS 7 t o b a t t e r y te rmina ls (i tem 4) CTC 20 t o 50 Q ANT ( i t em 7) IF(C) 5 t o 22 SKI ( i t em 10)

47.3.3 Repeat w i t h FSS on EUT s e t t o t he f o l l o w i n g frequencies (kHz) i n t u rn :

47.3.4 Depress CTC 5. -

47.3.5 Ad jus t CS 4 u n t i l DVM i nd i ca tes between 31.8 and 32.2 V.

47.3.6 Depress CTC 7. Note counter d i s p l a y which s h a l l be EUT frequency. Note DVM i n d i c a t i o n which s h a l l be no t g rea ter than 2.6 V.

47.3.7 Repeat w i t h FSS on EUT se t t o t he f o l l o w i n g frequencies (kHz) i n tu rn :

- - - . 47.3.8 Set CTC 1 t o Rx FM.

Test 3 - Transmit ter i n h i b i t

48 48.1 L i m i t . With EUT se t t o a p r o h i b i t e d frequency, t he t r a n s m i t t e r s h a l l produce a power output l ess than 0.04 pW (1.41 mV).

48.2 Method.

48.2.1 Set TRE and EUT switches as g iven i n Table 4.

48.2.2 Ad jus t CS 4 u n t i l DVM i nd i ca tes between 19.8 and 20.2 V. - Note t h a t EUT i s rece i v ing (noise i n LS).

48.2.3 On EUT, s e t FSS t o 79050 and note t h a t no ise i n LS i s muted.

48.2.4 Depress CTC 7, and ensure DVM i s se t t o 18 V range.

' (Disk Ref: EB/B/BH/18) Page 14 Issue 3, Jun 91

-0AL AND EEHANICAL !llCLEmMMUNllCATIONS S3GUEZRING REGmJLTIONS F 584 Part 1

Section 2 Note: These Pages 15-20, Issue 3 supersede Pages.15-20, Issue 2 -

dated Dec 78. Paras marked thus have been amended.

Table 4 - Test 3 switch settings

1 VEH 14-33 2 V E H V 6 Released

(ON)

CW AF WAD 1% Released Released Depressed Released Released Released Released Depressed Released Rl? AF SIGNAL INT

- --

EUT connections :

IF(C)


CS 7 to battery terminals (item 4) CTC 20 to 3 Q ANT (item 7) IF(C) 5 to 22 SKI (item 10)

7 m

FSS 30050 SSW JC RoS L

( 5 ) Depress CTZ 11. Note that INM indicates not more than 2 mV, and that there is no display on counter.

Test 4 - Transmitter power output from battle antennz 0 49. a. Limits. With a doc. supply of 20 f0.2 V the ref. power output

from the battle antenna shall be not less than 9 V for the following frequencies (MBz), when terminated into the antennx dmulator.

(I) Set TRE and ECrr switches as given in Table 5.

--

I VEH 14-33 2 V E E V 6 Released

(ON

Table 5 - Test 4 switch settings CTC

I CW 2 AF LOAD 150 3 Released 4 Released 5 Depressed 6 Released 7 Released 8 Released 9 Released 10 Depressed I1 Released 12 RF' 13 AF 14 SIGNAL 26 nm

IF(C) m

I OC FSS 32050 3 Released SSW Y. 4 Released RoS L 7 Normal

EUT connections:

CS 7 to battery terminals (item 4) IF(C) 5 to 22 SKI

TELECOMMUNICATIONS ELE(;TRICAL AM) HECBANICAL. F 584 Par t 1 mG=G m Z O N S - Section 2

(2) Connect antenna simulator (par t of FEIIIK) t o EXIT* a 3 Connect DW4 r.f, probe between antenna simulator output socket and CTC 16-17.

(4) Depress CTC 3 and CTC 11. Note WH indication which shall be greater than 9 V.

(5) Repeat sub-para (4) with FSS on EOT s e t t o the frequencies detai led under sub-para a. andmte DVM indication f o r each frequency.

(6) Set SSW on EUT t o 0 , and disconnect antenna simulator.

Test 5 - Unwanted deviation

@ 50. a. Limits. The deviation caused by noise shall not exceed:

(1) f 3 ppm of ca r r i e r frequency f o r deviating frequency greater than 200 Hz composed of noise, OR, f 2 ppm, i f unwanted s ignal is composed of discrete frequencies.

a (2) 28 ppm f o r 'deviating frequency of l e s s than 100 Hz.

b. Method.

( I ) Set TKE and EOT switches as given in Table 6. .--

(3) Depress CTC 11.

Table 6 - Test 5 switch se t t i ngs

(4) Note deviation indication which s h a l l be equal t o o r l e s s than 430 Hz. Call t h i s reading R1.

(5) Repeat sub-paras (2)-(4) with FSS on EUT s e t t o 62.050 HBz.

(6) Note deviation indication which s h a l l be equal t o o r l e s s than 680 Hz. C a l l t h i s reading R2. 0

m

Fss 39050 SSW L RDS L

cs

1 VEH24 2 W H V 6 Released

(ON)

Page 16 Issue 3, Oct 79

-

CTC I

1 PrWT TONE 2 AF IOAD 150 3 Released 4 Released

IF(C)


(2) Set MM t o 1.5 kHz range, 150 Hz f i l t e r IN, 3 kHz f i l t e r OUT.

5 Depressed 6 Released 7 Released 8 Released 9 Released

10 Depressed I1 Released 12 AF 73 AF 14 SIGNAL 26 INT

EUT connections:

CS 7 t o bat tery terminals (item 4) 0 CTCZQto50PANT (item 7) IF(C) 5 t o 22 SKI (item 10)

W T R I C A L AND MECHANICAL !EIZCOMMUNICATIONS EIVGINEDUNG REGULATIONS F 584 Par t 1

Section 2

Note: These Pages 17-18, Issue 4 supersede Pages 17-18, Issue 3 dated Oct 79. - The regulat ion has been revised throughout.

Test 6 - Deviation, 150 Hz

51. a. ILmits.

I The deviation of the t e r output due t o the inte-1 150 Hz tone shall be between kHz and 1.93 kEz.

(2) The frequency of the i tone shall be between 148 Hz and 152.5 Hz.

b. Method.

(1) Set TRE and EUT switches as given i n Table 7.

Table 7 - Test 6 switch s e t t i ngs

1 VEtr 24 2 mv 6 Released (ON)

-- -

I I PIWT TONE I 2 AF IDAD 150

3 Released 4 Released 5 Depressed 6 Released 7 Released 8 Released 9 Released

10 Depressed 11 ~ e l e h s e d 12 AF 13 AF' 14 SIGNAL 26 INT

EUT connections : . ,

I IF(C)

I OC 3 Released 4 Released 7 Normal

CS? to bat tery t e m i n a l s (item 4) CTC 20 to 50 AN'L (item 7) IF(C) 5 t o 22 SKI (item 10)

EUT

FSS 39050 SSW L ROS L

( 2 ) Set MM meter range t o 3 kHz, 150 Hz f i l t e r OUT, 3 kHz f i l t e r om.

( 3 ) Depress CTC 11.

(4 ) Note MM reading and subtract R 1 from t h i s reading (fi7 = noise deviation obtained i n previous t e s t ) . Resultant s h a l l l i e between 1.56 kHz and 1.93 kHz.

(5) Repeat sub-paras (2) and (3) with FSS on EUT s e t t o 62.050 MHz.

(6) Note HM reading and subtract R2 from this reading. 1:esultant s h a l l l i e be tween I .56 kHz and 1 -93 kHz.

(7) Note counter display which sha l l be 3etween 148 Hz and - - 152.5 Hz.

Issue 4, Jun 80 ( 1 4 ~ ) Page 17

& , '

TE~OMMUNICATIONS ELECTRICAL AND MECHAMdAL F 584 Part 1 ENGINEERING REGULATIONS '

section 2

Test 7 - Deviation 1 kHz

52. a. Limits. The amplitude of a I kHz tone applied t o the HIC sockets to produce a deviation of the transmitter output o f t 3 . 5 f0.2 kHz shal l be :

(1) 0.6 to 1.2 mV p.d. with ssw se t t o L.

s e t to W, between 1/6th and 1/4th tha t obtained i n

b. Method.

(1) Set TRE and E;CPT switches as given i n Table 8. Table 8 - Test 7 switch se t t ings

I VIX 24 2 mv 6 Released

( 04

CTC

MOD ST AF LOAD 150 Released Released Depressed Released Released Released Released Depressed Released AF AF SIGNAL INT

EUT connections:

CS 7 t o battery terminal (item 4) CTC 20 to 50 a rn (item 7) IF(C) 5 t o 22 SKI (item 10)

'

IF(C)


(2) Set MM meter range t o 5 H z , 150 Hz f i l t e r I N , 3 kHz f i l t e r OUT.

r m


(4) Set the AF G to produce a single tone of I kHz.

(5) Set the AF G output multiplier to XO.1.

(6 Depress CT! 11.

(7) Adjust the AF G output attenuator u n t i l the HM indicates (3.5 f0.2 kHz).

(8) Release CrC 17.

(9) Note the AF G attenuator se t t ing R l which shaU. be between 120 and 240 mV emf.

Page 18 B10 Issue 4, ~ u n 80

mxTRICqL AND HECBANICAL !EU(XMMJNICATIONS mGIKEERING REGULATIONS F 584 Part 1

Section 2

(10) Depress CTC 11 and note HM reading.

(11) Set SSW on EUT t o WHISEER (W).

(12) Reduce the AFG output u n t i l the HM indicates as noted ,

i n (70) above.

(13) Release CTC 11.

(14) Note the AFG attenuator se t t ing (R2). R2 sha l l be between 1/6 and 1/4 of R l .

(15) Repeat sub-paras (2)-(14) with FSS on EUT s e t t o 62.050 MHz,

Test 8 - Modulation control.

5 a. Limit. With a 1 kHz f 10% tone applied t o the HIC socket a t a l eve l of 20 f 2 mV p.d. the deviation of the transmitter output due t o t h i s modulating tone only shall be note greater than +6.? kEz.

b. Method.

( I ) Set TRE and EUT switches as given i n Table 9.

Table 9 - Test 8 switch se t t ings

I VM24 2 m v 6 Released

(OK

CTC

PILOT TONE AF IDAD 150 Released Released Depressed Released Released Released Released Depressed Released AF AF SIGNAL INT

3 Released SSW L 4 Released ROS L 7 Normal

EUT connections:

CS 7 t o battery terminals (item 4) CTC 20 t o 50 Q ANT (item 7) IF(C) 5 t o U S K l (item 10)

( 2 ) Set MM meter range t o 10 kHz, 150 Hz f i l t e r I N , 3 kHz f i l t e r OUT,

(3) Set the AFG t o produce a s ingle tone of I kHz.

(4) Set the AF'G output voltage multiplier t o XO.l.

( 5 ) Set the AFG attenuator t o 400 mV emf.

(6) Set CTC I t o MOD ST.

Issue 3, Oct 79 Page 79

OMMUNI CATIONS ~CTRICAL AND HECHANI E N G s r a m I N G RMjuLATI

Section 2

0 (7) Depress CTC 11.

(8) Note the MM indication which shall not be greater than 6.7 kHz.

Test 9 - Variation of deviation

0 9. a. Limit. With a standard a.f. tone applied t o the HIC socket, the difference between the highest and lowest deviation of the transmitter output due t o t h i s tone, shall not exceed I kEz over the frequency range i n any one band, (AF l eve l adjusted t o s e t deviation t o 5 kHz f 0.35 H z at 39-05 MHz low band and 62.05 MHz high band).

b. Method.

(1) Set TRE and FOT switches a s given i n Table 10.

Table 10 - Test 9 swStch set t ings

1 m 2 4 2 V E H V 6 Released

(ON

CTC

I MOD S.T. 2 AF LOAD 150 3 Released 4 Released 5 Depressed 6 Released 7 Released 8 Released , 9 Released

10 Depressed 11 Released 12 AF 13 AF 14 SIWAL 26 INT

IF(C) EOT

1 OC Fss 39050 3 Released SSW L 4 Released RQS L 7 Normal

EUT connections:

CS 7 t o battery terminals (item 4) CTC 20 t o 50 Q ANT (item 7) IF(C) 5 t o 2 2 ~ ~ 1 (item 10)

(2) Set the MM t o I0 k€k range, 150 Hz f i l t e r I N , 3 kEh f i l t e r OUT.

(3) Set the AFG t o produce a single tone of I kHz.

(4) Set the AFG output multiplier t o X0-1.

(5) Depress C!TC 11,

(6) Adjust the AFG attenuator se t t ing t o give a MM reading of 5 f0.35 kBz (RI). Maintain t h i s se t t ing of the AFG attenuator.

(9) Depress C'PC 11.

Page 20 18121 Issue 3, Oct 79

liLEZTaIw AND IamANICAt TEZECOHMmJICATIONS ENGINEERING REGULATIONS F 584 Part I

Section 2

(10) Measure and note the lQ4 reading (R2).

(11) Release CTC 11,

(12) Set FSS on EUT t o 47.950El.2,

(13) Depress CTC 11.

(14) Measure and note the HM reading ( ~ 3 ) -

(15) Release CTC 11.

(16) !he difference between the highest and lowest readings R l , R2 and R 3 must not be greater than ?kHz.

(17) Set FSS on EUT t o 6 2 . 0 5 0 ~ ~ ~ .

(18) Repeat sub-paras (5 )- (16) using second and th i rd frequencies as 48,050MHz and 76.050&,

Test 10 - Sidetone

55. a, Limits. With an a.f. input of IkHz at a l eve l of 10mV pod. r ,m.s . , the a.f. output in to 150Q, with the EU!l s e t t o any transmit frequency, shall be between 0-8 and 2-25m~. (0.346 and 0,581~. )

b. Method.

( I ) Set ?BE and EU'I' switches as given i n Table 14.

Table 11 - Test 10 switch se t t ings

I VEH 24 2 V E H V 6 Released

(ON)

I s m e 2, Dec 78

Released Depressed Released Released Depressed Released A . AF SIGNAL INT

EUT connections :

EUT C X

CS 7 t o battery tenninait? (item 4) CTC 20 t o 50P ANT (item 7) IF(C) 5 t o 22SK1 (item 10)

IF(C)

1 HOD ST 2 AFLQAD150 3 Released 4 Released 5 Released

Page 21

9

I OC FSS 48050 3 Released 4 Released 7 Normal

SSW L ROS L

COMMUNICATIONS lZJ3CTRICAL AND l4lmUNICAL '

ENGINEERING RlEUUTIO~ :

Section 2

(2) Set AFG tone B t o 1000H.z at 2OOmV output. 0 (3) Depress CTC 11. Note DVM indicat ion which shall be between 0.346 and 0.581~.

%st 11 - Sidetone i n h i b i t

56. a. Limit. With an a.f. input of ~ k ~ z at a l e v e l of 10-V pod. r.m.s., the a.f. output with the EUT s e t t o a prohibited frequency shall be not g rea te r than 0.06pW (3V). - .

b. Method

(1) Set IIRF: and EUT switches as given i n Table 12.

Table 12 - Test I 1 Bwitch s e t t i n g s

I MOD ST 2 AFLQAD150 3 Released 4 Released 5 Released

Released Depressed Released Released Depressed Released , AF AF SIGNAL INT

EUT connections :


CS 7 t o ba t te ry terminals (item 4) CTC 20 t o 50Q ANT (item 7) IF(C) 5 t o 22SK1 (item 10)

Fss 79050 SSW L ROS L

) Set AFG t o 1000Hz at 20hV output.

3 Depress CTC 11. Note DVM indicat ion which shall be l e s s *than 3 V .

Test 12 - Accuracy of radia ted c a r r i e r

57. a. Limits . The radia ted frequency s h a l l be within 5 p.p.m. of the se lected frequency.

b. Method.

( I ) Set !ERE and EUT switches as given i n Table 13.

(2) Set C E 1 t o TX CV. Note counter display which shall be 30.100HHz fl50Hz.

Page 22 ~ s s u e 2, Dec 78

EZECTRICAL AND HECHRNICAL QlsGINEERING REGULATIONS

1 VEH 24 2 m v 6 Released

(ON)

l!ELEmmCA!rIoNs F 584 Part 1

Section 2

Table 13 - Test 12 switch s e t t i n g s

CTC

CW hl? LOAD 150 Released Released Released Released Depressed Released Released Depressed Released IF AF SIGNAL INT

EUT connections:

CS 7 t o ba t te ry terminals (item 4) CTC 20 t o ANT (item 7) IF(C) 5 t o 22SKl (item 10)


(3) Repeat with FSS on EUT s e t t o the following s e t t i n g s i n tu rn ; at each s e t t i n g , note display on 'counter, which s h a l l be within the limits shown:

FSS 30100 S S W L ROS L

FSS s e t t i n g

31800

4 7 2 5

43350

55475

57509

68625

697%

74975

7-@

frequency indicated

31.800MHz f 159Hz

42.225MHZ * 210Hz

43.35OMH.z + 215H.z

55 .475m * 2 7 % ~

5 7 . 5 0 0 ~ ~ ~ * 2 8 5 h

68.625m + )40&

69.750m ?: 345h 74.975m * 375b 76.000MHz + *Hz

Test 13 - Spurious rad ia t ion

58. a. Limits.

(1) The radia ted power of the second and t h i r d harmonic s h a l l be greater than 3 6 d ~ down and .any other harmonic, within the range 1-500MBz, of the se lected frequency shall be grea te r than b d B d o n on the se lec ted c a r r i e r level .

( 2 ) The l e v e l of non-harmonically r e l a t ed spurious emissions, o ther than frequencies v i t h i n 10% of t he se lec ted frequency, sha l l be greater than B O ~ B down on the se lected c a r r i e r level .

b. Method. See Section 1 , para 13 f o r d e t a i l s .

Issue 2, Dec 78 Page 23

TELECOHHmjICATIONS ELEC'l!RIW AND HECBANICAL ENGmEEXING REmTIc!Ns

Section 2

Test 14 - Receiver s e n s i t i v i t x a 59. a. Limit. The s ignal + noise t o noise r a t i o caused by a I V V e.m.f. r.f.

signal with standard modulation, shall be not l e s s than 1 6 d ~ .

Caution: Do not depress CTC 11 whilst carrying out this, o r any other receiver tes t .

b. Hethod.

( I ) Set TRE and EUT switches as given i n mb le 14.

I VEH 24 2 m v 6 Released

(ON)

RXFM S + N:N Released Released Released Released Depressed Released Released Depressed Released AF AF SIGNAL INT 1

1 OC FSS 39025 3 Released 4 Released

s= * ROS A

7 Normal

EUT connections :

CS 7 t o bat tery terminals (item 4) CTC 20 t o 50Q ANT -(item 7) P(C) 5 t o 22SK1 (item 10)

(2) Set RM; frequency t o 30.025KKz, in te rna l ly modulated by 1000Hz at *%Hz deviation. Set output attenuator t o 120dB (1W). Note demodulated IkHz tone i n IS, and output waveform on CRO.

) Set CTC 14 t o HOD OFF. Note and record DVn indication reading A.

(4) Set CTC 14 t o SIGNAL, and adjust CTC 15 u n t i l DVH indicates ae reading A. Note s e t t i ng of CTC 15, and read dB equivalent from dB chart on CTC f ron t panel. It s h a l l be not l e s s than 16dB.

(5) Repeat t e s t with EUT and RFG s e t t o the following frequencies (kHz) i n turn:

60. a. Limit. Uith a modulated r e f . signal applied t o the receiver antenna, the receive audio output shall not change by more than 0.75dB when the r. f . signal l eve l is increased from IpV t o 100mV e .m. f .

. Page 24

ZLECTRICAL AND HECHANICAL TEIZZOWUNICATIbNS mIt4-G ~ ~ T I O N S F 584 Part I

Section 2 Note: lhese Pages 25-26, &sue 3 supersede Pages 25-26, Issue 2 dated -

Dee 78. Paras marked 8 have been amended.

Caution: Do not depress CTC I1 during t h i s t e s t ,

b. Method,

( I ) Set TRE and EOT switches as given i n Table 75. Table 15 - Test 15 twitch se t t ings

0 (3) Set RFA t o 20 dB (100 mV). Note DVM indication as reading B. Reading B shal l 'not change more than 0.75 dB from reading A.

(4) Repeat t e s t with EUT and RFG s e t fo r a f req~ency of 39.025 MBz.

I CS

Test 16 - Squelch sens i t iv i ty (163 Hz in terna l )

61. a. Wmits.

6

8 (I ) lFde sens i t iv i ty of the squelch c i r cu i t due t o the in t e rna l 160 Ez tone is such that a t the 2.5 dB quieting leve l the squelch wi l l be closed, and by 9 dB quieting leve l the squelch will be open,

@ (2) !be squelch w i l l be continuously opened f o r a pex-l(~d of not l e s s than 5 seconds by the application of an r e f . sigr'r A modulated by a 153 Hz k 0.05 Hz tone a t f 1.3 kHz deviation.

4

EOT

FSS 62025 SSW* ROS L

CTC

1 Ttx FM 2 AF U A D 7 5 0 3 Released 4 Released

I VE€i 24 2VEAV

Caution: Do not d e p r e s ~ CTC 11 during t h i s t e s t .

". .

IF(C)


i 6 Released I (ON) ,

i

11 Released I 1 2 AF ! 13 A .

b. Method.

(2) Set RFG frequency t o 62.025 MEz modulated by 1000 Hz at f 5 kHz deviation. Set attenuator t o 120 dB (I $?I. Note DVM in'dication as reading A.

5 Released 6 Released 7 Depressed 8 Released 9 Release2

10 Depressed

+

(I ) Set TRE and EOT switches as given i n Table 16.

EUT connections:

CS 7 t o bat tery terminals (item 4) CTC 20 t o 50 8 ANT (item 7) D(c) 5 t o 22SKl (item 10)

1 4 SIGNAL 26 INT

(2) Set RFG frequency t o 39.025 HHz unmodulated.

(3) Set RFA t o 139 dB,

Issue 3, Oc t 79 (1 4. ) Page 25

C3 I

ELECTRICAL AND MECHANICAL ENGINEERING RElS~TIONS

Section 2

Table 16 - Test 16 switch set t ings

I VEE 24 2 m v 6 Released

(ON

I R X C W 2 QLnmXNG 3 Released 4 Released 5 Released 6 Released 7 Depressed 8 Released 9 Released

10 Depressed 11 Released 12 AF 13 AF 14 CARRIER OFF 26 m

- --

EUT connections:

CS 7 t o battery terminals (item 4) CTC 20 t o 50 8 ANT (item 7) IF(c) 5 t o 22 SKI (item 10)

(4) Set CTC 15 t o 76 (2.5 dB). Note and record DVM indication as reading A.

(5) Set CTC 14 t o SIGNAL.

(6) Ad just R F A u n t i l DVM indicates reading A.

(7) On EUT, s e t SSW t o L and note that squelch is closed (no noise in IS).

8 (8) EUT se t ssw t o JC . (9) Set CTC 14 t o CARRIER OFT,

(10) Set CTC 15 t o 36 (9 dB). Note and record DVM indication as reading B.

(11) Set CTC 14 to SIGNAL.

(12) Ad just RFA u n t i l DVM indicates reading B.

(13) On ECPT, s e t SSW t o L and note that squelch is open (noise in LS).

(14) Set CTC 1 t o Rx FM.

(15) Modulate RFG with 153 Hz a t f 1.3 kHz deviation.

(16) Set RFA t o 120 dB. Note that squelch remains open (noise i n IS)

Test 17 - Squelch sens i t iv i ty (150 Hz external)

6 62. a. U t . !he sens i t iv i ty of the squelch c i r cu i t due t o an external 150 Hz tone is such that at the 2.5 dB quieting leve l the squelch w i l l be closed, and by the 8.5 dB quieting point the squelch w i l l be open.

Page 26 Issue 3, Oct 79 0

EU3C!CRICAL AND HEXHANICAL TELM=OMMUNICATIONS F I N E E R I N G REGULATIONS F 584 k t I

Section 2

Caution: Do not depress CTC 11 during t h i s t e s t .

b. Method,

( I ) Set TRE and E[rr sv i tches as given i n Table 17.

1 YEH 24 2 YEH V 6 Released

(ON)

I RXF'M 2 QJIETING 3 Released 3 Released 4 Released 4 Released 7 Normal 5 Released


Released Depressed Released Released Depressed Released AF AF m m om INT

CTC

I

EUT connections:

CS 7 t o ba t te ry terminals (item 4) CK! 20 t o 509 ANT (item 7) IF(c) 5 t o 22SK1 (item 10)

IF(C)

(2) Set RFG t o 39.025MHz modulated by I F H z a t +I .FHz deviation.

EU!C

(3) Set CTC 15 t o 76 (2.5dB). Note DVM ine ica t ion as reading A.

(4) Set CTC 14 <o SIGNAL.

( 5 ) Adjust RFA u n t i l DVM ind ica tes reading A.

(6) Set SSW on E[rr t o L, and note t h a t squelch is closed (no noise i n IS).

(7) Set SSW on EUT t o * . (8) Set CTC 14 t o CARRIER OFF,

(9) Set CTC 15 t o 38 (8,5dB). Note DVM indicat ion ii; reading B.

(10) Set CTC 1 4 t o SIGNAL.

(11) Adjust RFA u n t i l DVM ind ica tes reading B.

(12) Set SSW on EUT t o L and note t h a t squelch is open (noise i n LS).

Issue 2, Dec 78

$@ - !ELECOMMONICATIONS rF ELECTRICAL AND MECHANICAL .' F 5 8 4 P a r t l ENGINEERING REGULATIONS

Section 2 a 63. a. L i m i t s . The second channel r e j ec t i on w i l l be g rea te r than 100dB at

any low band frequency and greater than 95dB at any high band frequency.

Caution: Do not depress CTC 11 during this t e s t .

b. Method.



1 k F M 2 QUIETING 3 Released 4 Released 5 Released 6 Released 7 Depressed 8 Released 9 Released

10 Depressed 11 Released 12 AF 13 A.3' 14 SIGNAL 26 INT

1 OC 3 Released 4 Released ROS A 7 Normal

FOT connections :

CS 7 t o ba t te ry terminals (item 4) CTC 20 to 509 ANT (item 7) IF(C) 5 t o 22SKl (item 10)

(2) Set RFG frequency t o 47.975MHz unmodulated.

3 Set RFA t o 120dB. Note DW indicat ion as reading A.

(4) Set RFG frequency t o 71 .O25MHz ( f s + 2I.F).

75) Adjust RFA u n t i l DVM indicates reading A. Note RFA s e t t i n g which shall be not g rea te r than 20dB.

(6) Set FSS on mT t o 76025.

(7) Set RFG frequency t o 76.025MHz unmodulated.

(8) Set RFA t o 1X)dB. Note DW-indication as reading B.

(9) Set RFG frequency t o 99.075MHz (fs + 2IF).

(10) Adjust RFA u n t i l DVM ind ica tes aa reading B, Note RFA s e t t i n g which shall be not greater than 25dB.

Y


ELECTRICAL AND l4BXANtCA.L TEISSOMMUNICATIONS gJGINEERING REGULATIONS F 584 Pa r t I

Section 2

a Note: These Pages 29-30, Issue 3 supersede Pages 29-30, Issue 2 dated Dec - 78. The regulat ion has been revised throughout.

7 64. a. knits.

( I ) With an r. f . signal modulated by 1 kHz a t f 5 kHz deviation a t a l e v e l of 1 mV e.n.f. applied t o the 50 P antenna socket, the audio outputs shall be:

(a ) 3.1 t o 6.3 mV i n t o 300 R at the remote terminals.

(b) 1.6 t o 2.4 mW i n t o 150 a a t p in s G and E of both audio socket^ with SSW s e t t o I * ' and with the remote terminals cor rec t ly loaded i n t o 300 Q (see Misc Instr No 5 ) . (c ) With SSW s e t t o W, ROS to L o r R, the outputs at pins G and E of the audio socket s h a l l be 21 t o 16 dB l e s s than the output i n (b).

( 2 ) The d i s to r t i on of the audio output at the remote terminals and audio socket shall be not greater than 8.5 6.

Note: The f a c i l i t i e s of the TRE do not include the measurement of - dis to r t ion . De ta i l s w i l l be issued i f and when f a c i l i t i e s are provided.

Caution: Do not depress CTC I1 during t h i s t e s t .

b. Method.

( I ) Set TRE and. EUT switches as given in Tab

Table 19. - Test ?g switch s e t t i n g s

1 VEX 24 2 m v 6 Released

(ON)

CTC

I RXFM 2 m c m 3 Released 4 Released 5 Released 6 Released 7 Depressed 8 Released 9 Released

10 Depressed 1 7 Released 72 AF 13 AF 14 SI3iNXL 25 I N F


EUT connections:

CS 7 t o ba t t e ry terminal: (item 4) CTC 20 t o 50 Q ANT (item 7) IF(c) 5 t o 22 SK? (item 10)

("! 1 ' - TRE items 16 and 17, connect EUT remote terminals to i. , Ilarness fan-out p in s A and B.

(3) Check i f a c a l l tone i s heard (2 kHz), reverse connections at remote terminals.

Issue 3 , Jun 80 (14 W) Page 29

-7 TE~OMKUNXCATIONS 9::- F 584 Par t 1 Section 2

ELECTRICAL AND MECBANICAL' ENGINFXRING RCGULATIONS

(4) Se t RFG frequency t o 47.975 MKz, modulated by 1 kHz at f5 kHz deviation and 150 Hz at f l -3 ldz deviation.

0

(5) Se t RF'A t o 60 dB (1 mV). Note DVM indicat ion which shall be between 0.44 and 0.63 V.

(6) Set CTC 2 t o AF UAD 150 and ROS t o L, Note and record ae reading A, the DVM indicat ion which s h a l l - b e between 0.49 and 0.574 v.

(7 ) Transfer connection from EUT 22SK1 t o 22SK2, Note that DVM i nd i ca t e s reading A.

(8) On EUT, s e t SSW to W and ROS t o L o r R. Note and record DVM indicat ion, which shall be 1/9th t o 1/16th of reading A.

( 9 ) Observe display on CRO and note that the d i s t o r t i on does not appear excessive i n the above t e s t s .

Test 20 - b w ba t te ry warning

65. a. Limit. The low ba t te ry warning s h a l l operate w i t h a doc. input voltage between 17 and 19.5 V.

b. Method.

(1 ) Set TRE and EJJT switches as given i n Table 20.


I 14-33 2 V E H V 6 Released

(ON)

CTC I

1 R X F M 2 AF AD 150 3 Released 4 Released 5 Depressed 6 Released 7 .Released 8 Released 9 Released

10 Depressed I1 Released 12 AF 13 AF 14 CARRIER OFF 26 IMC

EUT connections:

CS 7 t o ba t te ry terminals (item 4) CTC 20 t o 50 ANT (item 7) LF(C) 5 t o 22SK1 (item 10)

m c )

I OC 3 Released 4 Released 7 N o d

(2) Adjust CS 4 u n t i l DVM ind ica tes between 23.8 and 24.2 V,

m


3 Slowly reduce CS 4 s e t t i n g u n t i l burs t s of noise a r e heard i n LS. Note DVM indicat ion which shall be between 17 and 19.5 V-

Page 30

ELECTRICAL AND MM=HANICAL !CEZECOMMUNI~ATIONS ENGIWERING BEOULATIONS F 584 Part 1

Section 2

Test 21 - C a l l output

66. a. Limit. With the equipaent i n CALL condit ion, the c a l l tone measured a t pins G and E of the audio socket shall be 2kHz f15% at a l e v e l of g rea te r than 2 m W i n t o 1509.

b. Method. Set EUT and TRF; switches as given i n Table 21.

!Cable 21 - Test 21 switch s e t t i n g s

1 VEH 24 2 V E H V 6 Released

(ON)

RXFM AF LOAD 150 Released Released Released Released Depressed Released Released Depressed Released AF AF CARRIER om INT

Note c a l l tone heard ir LS.

IF'(c) 5 t o 22SK1 (item 10)

IF(C)


Note counter display which s h a l l be between 1700 andl2300Hz. Note DVM indicat ion which s h a l l be g rea te r than 0.548~.

EUT

FSS 47975 SSW L

C

Test 22 - D.C. v o l t w e s t o l i n e and 22SK2 pin C

67. a. L i m i t s .

EUT connections :

CS 7 t o ba t te ry terminals (item 4 ) CTC 20 t o 50Q ANT (item 7)

(1) With ROS s e t t o R, A o r I, a d.c. voltage between 14.5 and 19V shall appear at the remote terminals.

(2) With EUT i n any condition except OFF, the doc. supply voltage s h a l l appear at audio socket 22SK2 pin C w.r.t . earth.

b. Method.

(1 Set TRE and EUT switches as given i n Table 22.

(2) Using items 16 and 17, connect EUT remote terminals t o IF(C? harness fan-out p ins A and B (ensuring correct polar i ty) .

) M j u s t CS 4 u n t i l DVM ind ica tes between 19.8 and 20.2V.

(4) Depress CTC 6. Note DVM indicat ion which shall be between 14.5 and IYV.

Issue 2, Dec 78 D

TELECOHMlTNICATIONS J* F 584 Par t 1

Section 2

EZECTRICAL AND MECHA,NICAI, ENGINEXRING m T I O N S

(5) Set ROS t o A and I i n turn, A t each po indicat ion which s h a l l be between 14.5 and 1

0

(6) Depress CTC 5 and adjust CS 4 u n t i l DVH ind ica tes between 31.8 and 32.2V.


I VEB 14-33 2 V E H V 6 Released

(ON)

RC LOC*RM Released Released Depressed Released Released Released Released Depressed Released AF AF CARRIER O F INT

EUT connections:

CS 7 t o ba t te rg terminals (item 4) CTC 20 to 504 ANT (item 7)

0 IF(C) 5 t o 22SK2 (item 10)

'

m c )

1 LINE CURRENT 3 Released 4 Released 7 N o r m a l

'(7) Depress CTC 6 and note DVM indicat ion which shall be between 14.5 and 19V.

EUT

FSS 47975 S S W + ROS R

(8) Set ROS t o A and R i n turn, at each posi t ion note DVM indicat ion which shall be between 14.5 and 19V,

(9) Set ROS t o L and note DVM indicat ion which shall be not g rea te r than 1V.

(10) Set CS1 t o VEH 24,

(11) Depress CTC 5. Note DVM indicat ion and record ae reading A.

(12) Depress CTC 6,

(13) Depress IF(C) 4, Note DVH indicat ion which shall be reading A S,02V.

Test 23 - Remote l i n e currents

68. a, Limits. With ROS s e t t o R o r A:

(1) With a current of not greater than 4mA flowing i n the remote l i n e s , the EUT must be i n the receive condition. -

I (2) With a current of between 8 and 14.5mA flowing i n the remote l i n e s , the EDT must be i n the transmit condition, -

+ Page 32 Issue 2, Dec 78

ELECTRICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 584 Par t 1 (Disk Ref: E B / B / B H / l l ) Sect ion 2

"*

Note.. . These Pages 33-34, Issue 3, supersede Pages 33-34, Issue 2, dated Dec 78, The in fo rmat ion has been brought up t o date.

(3) With a cu r ren t o f between 15 and 30 mA f l ow ing i n the remote l i n e s , t he EUT - must be i n the c a l l qondi t ion.

b. Method.


Table 23 - Test 23 swi tch se t t ings .

(3) Set I F ( C ) 2 f u l l y counter-clockwise.

CS

1 VEH 24 2 VEH V 6 Released

(ON)

(4) Check t h a t EUT i s i n rece ive c o n d i t i o n (noise i n LS). Note DVM i n d i c a t i o n s which s h a l l be l ess than 4 mV (=4mA).

(5) Slowly ad jus t IF(C) 2 u n t i l DVM i nd i ca tes 4 mV. Check t h a t EUT i s s t i l l i n rece ive cond i t ion .

(2) Using TRE Items 16 and 17, connect EUT remote te rmina ls t o I F ( C ) harness fan-out p i n s A and B, ensuring c o r r e c t p o l a r i t y .

---------------

------- CTC

1 RC 2 LOC + REM 3 Released 4 Released 5 Released 6 Depressed 7 Released 8 Released 9 Released

10 Depressed 11 Released 12 RF 13 AF 14 CARRIER OFF 26 INT

L---

(6) Slowly ad jus t I F ( C ) 2 u n t i l EUT changes t o t ransmi t c o n d i t i o n (determined by l oss o f no ise i n LS and d i sp lay o f EUT frequency on counter) . Note DVM i n d i c a t i o n which s h a l l be between 4.01 and 8 mV.

3 Depressed 4 Released 7 Normal

--- ------ EUT connections:

CS 7 t o b a t t e r y te rmina ls ( i t em 4) CTC 20 t o 50 Q ANT ( i t em 7) I F (C ) 5 t o 22 SKI ( i t em 10)

(7) Increase I F ( C ) s e t t i n g u n t i l DVM i nd i ca tes 14.5 mV. Check t h a t EUT i s s t i l l i n t ransmi t cond i t i on .

(8) Increase s e t t i n g o f I F ( C ) 2 u n t i 1 EUT changes t o c a l l c o n d i t i o n (determined by 2 kHz tone i n LS). Note DVM i n d i c a t i o n which s h a l l be between 15 and 30 mV.

(9) On EUT se t ROS t o A and repeat (3) t o (8) .

I ssue 3, May 91 Page 33 14Jf

I .A* + TELECOMMUNICATIONS ELECTRICAL AND MECHANICAL F 584 Par t 1 ENGINEERING REGULATIONS Sect ion 2

Test 24 - Remote 1 i n e res is tance

69. a. L im i t s . When the EUT i s opera t ing i n remote mode:

(1) With the remote 1 ines open c i r c u i t , the EUT s h a l l be i n rece ive condi t i on.

( 2 ) A res is tance of 1400 Q across the remote te rmina ls s h a l l cause the EUT t o be i n t he t ransmi t cond i t ions .

(3) A res is tance of 500 Q across the remote te rmina ls s h a l l cause t h e EUT t o be i n t he c a l l cond i t ion .

4 A sho r t c i r c u i t across the remote te rmina ls s h a l l cause the EUT t o be i n the c a l l cond i t ion .

b. Method.

(1) Set TRE and EUT switches as g iven i n Table 24.


----- - CTC

1 RC 2 COC + REM 3 Released 4 Released 5 Released 6 Depressed 7 Released 8 Released 9 Released

10 Depressed 11 Released 12 RF 13 AF 14 C A R R I E R OFF 26 INT ------

- ------ IF(C) ------------- 1 LINE CIRCUIT['^ ------- ;j 2 Set f u l l y an t ic lockwise 3 Depressed 4 Released 7 Normal ------- -------- EUT connections :

CS 7 t o b a t t e r y te rmina ls ( i t e m 4) CTC 20 t o 50 Q ANT ( i t e m 7) I F ( C ) 5 t o 22 SKI ( i t e m 10)

(2) Using TRE i tems 16 and 17, connect EUT remote te rmina ls t o I F ( C ) harness fan-out, p i n s A and B, ensur ing c o r r e c t p o l a r i t y .

(3) Check t h a t EUT i s i n rece i ve c o n d i t i o n ( i nd i ca ted by no ise i n LS and DVM i n d i c a t i o n o f l ess than 4 mV).

(4) Set IF(C) t o Tx 1400. Check t h a t EUT i s i n t ransmi t c o n d i t i o n ( i nd i ca ted by no no ise i n LS), and there i s a counter i n d i c a t i o n of 47.975 MHz and DVM i n d i c a t i o n o f 8 t o 14 mV.

(5) Set IF(C) t o CALL IN 500 9. Check t h a t EUT i s i n CALL cond i t ion ; i nd i ca ted by c a l l tone i n LS and DVM i n d i c a t i o n o f 15 mV t o 30 mV.

(6) Set I F ( C ) 1 t o CALL I N SC. Check t h a t EUT i s i n c a l l c o n d i t i o n ( i n d i c a t i o n s as (5) above).

Page 34 Issue 3, May 91

Ea3C!CRICAL AM) laXHANICAL TEIIF;COMMUNICATIONS ~ENQINXRING T(EGITWLTI0NS F 584 Part I

Test 25 - Auto-rebroadcast operation, l o c a l - remote

70. a. Limit. With the EUT i n auto - rebroadcast working, i n receive condition, a modulated r.f. s igna l at a l e v e l of IPV shall produce a demodulated tone at the remote terminals, and place a load across the remote terminals, such t h a t an external ly applied doc. voltage of 1 8 ~ s h a l l cause a current of 8 - I I~A t o flow.

b. Method.

(1 ) Set TRF: and EUT switches as given i n Table 25.


I VEH 24 2 VEH V 6 Released

(ON)

RC m* m Released Released Released Depressed Released Released Released Depressed

12 AF 13 14 SIGNAL 26 TNT

EUT connections :

I 18v ~ r r r o 3 Released 4 Released 7 Normal

CS 7 t o ba t te ry terminals (item 4)

FSS 4797: SSW L ROS A

CTC 20 t o 5QQ ANT (item 7 ) D(C) 5 t o 2 2 5 K 1 (item 10)

I

(2) With CTC 1 s e t t o RC, the remote control of the RFG is inh ib i ted , and the modulation must be s e t manually.

(a) Using Racal e q u i p e n t :

i. On signal processor, s e t mode R E M O T E W switch t o LOCAL.

ii. Set MODE switch t o 0-IOkHz fm deviation.

iii. On two-tone generator, switch tone A OFF, s e t tone B frequency t o 1000Hz and output l e v e l t o W V .

iv. Cb sig% processor, ad jus t modulation l eve l control u n t i l deviation meter i nd i ca t e s 5kHz deviation.

V. On two-tone generator, s r i t c h tone B CFF, switch tone A ON.

v i . Set tone A frequency t o 150Hz, and ad jus t tone A output l e v e l u n t i l deviation meter on signal processor i nd i ca t e s 1.3kHz.

v i i . On two-tone generator, switch tone B ON.

I ssue 2, Dec 78 Page 35

TELECOMMUNICATIONS ELETRICAL AND WECBANICAL F 584 Part 1 ENGINEERING REGULATIONS Section 2

(b) Using Schlumberger equipment: 0 i. On three-tone generator, s e t A tone ON, B tone OFF.

ii. S e t l e v e l A a n d B t o D V .

iii. Set CONTROI&XAL t o LOCAL.

iv. Set CARRIER t o ON.

V. Set C tone to. ON.

vi. Set leve l C t o I B V .

v i i , Set An t o OFF and FM t o INT.

v i i i . Set output multiplier to XI.

ix. Set generator A frequency t o 1000Hz. a x. Set generator C frequency to 150Hz.

xi. Set attenuator on attenuator control uni t t o 120dB.

xii. Set frequency synthesizer to 47.975MHz.

(3) Using TRE Items 16 and 17, connect EUT remote texminals to IF(C) harness fan-out pins A and B, ensuring correct polarity.

- (4 Continue.

(a) I f using Racal ,equipment :

i. Set MODE switch on signal processor to OFF. Note DVM indication which shall be not l e s s than IOV.

ii. Set MODE switch on signal processor to fm 0-IOkHz deviation. Note lkHz tone i n LS (EUT receiving).

iii. Depress IF(C) 3. Note DVM indication which 0

sha l l be between 8mV and I lmV.

iv. On signal processor, s e t MODE switch t o OFF and REMOTF,/LOCAL mit ch t o REMUl3.

(b) I f using Schlumberger equipnent:

i. Set CARRIER switch on three-tone generator to OFF, Note DVM indication which shall be not l e s s than ?OV.

ii. Set CARRIER switch on three-tone generator t o ON. Note lkHz tone i n IS (EUT receiving).

iii. De~ress IF(C) 3. Note DW indication which sha l l be betwee; 8 and 1 l m ~ i

C14 Issue 2, Dec 78

ELECTRICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 584 Par t 1

Sect ion 2

These pages 37-38 supersede pages 37-38 Issue 3, dated Jan 93

TEST 26 - LINE MODULATIOW SENSITIVITY

71 a. L i m i t s

(1) With the EUT se t t o R, and a res is tance o f 1400 Q connected across the remote terminals , an a.f . s igna l o f 1 kHz a t a l e v e l o f 250 mV 25% app l ied t o the remote te rmina ls s h a l l cause the t ransmi t ted r.f. output t o be deviated by more than k3.3 kHz.

(2) Increas ing the l e v e l o f t he a. f . s igna l t o 7.5 V +lo% s h a l l cause the dev ia t i on t o increase t o l ess than 6.7 kHz. The d i s t o r t i o n s h a l l be l ess than 13%.

(3) With cond i t ions as 71a (2) and EUT s e t t o A, t he d i s t o r t i o n s h a l l be l ess than 13%.

b. Method.


(2) Using T'RE Items 16 and 17 connect EUT remote te rmina ls t o I F ( C ) harness fan-out p i n s A and B, ensuring c o r r e c t p o l a r i t y .

(3) On AFG, se t tone B frequency t o 1000 Hz, ou tpu t l e v e l t o 200 mV .

CS

1 VEH24 2 VEH V 6 Released

(ON)

(4) Using TRE items 14 and 15, connect EUT remote te rmina ls t o CTC 16 and 17. Note DVM i n d i c a t i o n , and ad jus t tone B t o ou tpu t l e v e l u n t i l DVM i nd i ca tes between 237.5 and 262.5 mV.

1 RC 2 REM - LOC 3 Released 4 Depressed 5 Released 6 Released EUT connections: 7 Released 8 Released CS 7 t o b a t t e r y te rmina ls ( i t em 4) 9 Released CTC 20 t o 50 Q ANT ( i t em 7)

( i t e m 10) 11 Released 12 RF 13 AF 14 CARRIER OFF

( 5 ) Depress CTC 6.

(6) Set SSW on EUT t o L. Check t h a t EUT i s i n t ransmi t c o n d i t i o n ( i nd i ca ted by counter d i sp lay o f EUT frequency).

Issue 4, Jul 93 Page 37

TELECOMMUNICATIONS F 584 Par t 1 Sect ion 2

ELECTRICAL AND MECHANICAL ENGINEERING REGULATIONS

(7) Using MM, measure dev ia t i on which s h a l l be greater than 3.3 3.3 kHz.

(8) On AFG, se t LEVEL MULTIPLIER TO X10.

(9) Measure dev ia t i on on MM, which s h a l l be l e s s than 6.7 kHz. Observe d i sp lay on CRO, and check t h a t d i s t o r t i o n i s n o t v i s i b l e .

(10) Set ROS on EUT t o A. Observe d i s p l a y on CRO, and check t h a t d i s t o r t i o n i s no t v i s i b l e .

f EST 27 - INTERCOM

72 a. L im i t s . With EUT i n in tercom mode.

(1) The equipment s h a l l no t t ransmi t .

(2) A received s igna l w i 11 be heard a t t h e AUDIO sockets and remote terminals .

(3) With the l o c a l pressel pressed, an a.f. s igna l app l i ed t o the l o c a l M I C socket w i l l be heard a t t he AUDIO socket and remote te rmina l s.

(4) An a . f . s igna l app l i ed t o the remote te rmina ls w i l l be heard a t t he AUDIO socket.

b. Method.



Note DVM i n d i c a t i o n which s h a l l be l e s s than 12.5 mV ( rece ive cu r ren t 1.

(2) Depress CTC 11 and note DVM i n d i c a t i o n which s h a l l be l ess than 12.5 mV.

E.U.T.

FSS 47975 SSW L ROS I

CS

1 VEH24 2 VEH V 6 Released

(ON 1

Page 38 Issue 4, J u l 93

6 Released 7 Released 8 Released 9 Released

10 Depressed 11 Released 12 RF 13 AF 14 CARRIER OFF 26 INT

CTC .-

1 CW 2 AF LOAD 150 3 Released 4 Released 5 Depressed

EUT connections:

CS 7 t o b a t t e r y te rmina ls ( i t em 4) CTC 20 t o 50 Q ANT ( i t em 7 ) I F ( C ) 5 t o 22SK1 ( i t em 10)

I F ( C )

1 OC 2 F u l l y a n t i - c l o c k w i s e 3 Released 4 Released 7 Normal

, . . -

TELECOMMUNICATIONS ELECTRICAL AND HECHEUVf CAL F 584 Part 1 ENGINEERING REGUMT IONS Section 2

75. Initial fault indication will be from results of specification tests carried out on TRE or ATE. Fault diagnosis will be, in the first instance, by interpretation of results obtained, leading to fault location at assembly or discrete component 1 eve1 . 76. The basic approach to proving an assembly failure will be:

a. Check that a1 1 d.c. voltages are correct (see Table 4001).

b. Check input conditions.

c. Check output condi ti ons . 77. Table 28 lists the specification tests carried out, with an indication of the possible suspect assembly/assmbl ies related to the fault indications for a- each test.

Table 28 - RT 351 fault diagnosis

Specification Test No.

1 a.. (2)

1 a. (1) and (2)

2 a. (1) and (2)

2 a. (1) and (23

2 a. (1) and (2)

--

Indication

No current

Tx current normal Rx current outside 1 imits

Tx current outside limits

Rx and Tx current outside 1 imi ts

No r.f. output

No output on one band

Output low

Outside 1 imi ts

Suspect

2LK1, 2% (19) and d.c. input writing on web.

Confirm Rx current on high and low bands. If on one band only suspect (5) and (11) or (12). If both bands suspect (5) (6) (7)

Confirm Tx current on high and low bands. If one band only, suspect (14) (15) (17) (18). If both bands suspect all Tx assemblies and remote unit.

(19) (2)

Recheck with EUT and FRTK. If power correct,. suspect antenna matching 13). If no r.f. output suspect (20) (14) (15) (16) (17) (18).

Issue 3, Jan 93

ELECTRICAL AND MECHANICAL TEL ENGINEERING REGULATIONS

(3) Set CTC 1 t o Rx FM.

(4) Set FRG t o 47.975MHz. Tone A t o lkHz a t 5kHz deviation and tone B t o 150Hz a t 1.3kHz deviation.

(5) Set RFA t o 60dB.

(6) Set CTC 14 t o SIGNAL. Note lkHz tone i s L.S.

(7) Using TRE items 16 and 17 connect, EUT remote terminals t o I F K ) harness fan-out pins A and B, ensuring correct po lar i ty .

(8) Set CTC 2 t o LOC - REM. Note lkHz tone i n L.S.

(9) Set CTC 14 t o CARRIER OFF.

(10) Set CTC 1 t o MOD ST.

(11) Set CTC 2 t o AF LOAD 150.

(12) Depress CTC 11, and note lkHz tone i n L.S.

(13) Set CTC t o LOC - REM.

(14) Depress CTC 11 and note lkHz tone i n L.S.

(15) Set CTC 2 t o REM - LOC.

(16) Set I F K ) 1 t o LINE CURRENT.

(17) On AFG set tone A output level t o 2V.

(18) Set CTC t o RC and note lkHz tone i n L.S. (CRO display indicates a. f. tone a t remote terminals. Depress CTC 7, DVM indicates level of tone a t audio socket).

FAULT F INDING a

General

73. The modular construction of the RT 351 may require the removal of -connections t o an assembly pin. This can be achieved by careful use of the suction soldering tool, t o remove the solder and iso la te the assembly p in from the surrounding 1 and. The is01 at ion obtained i s minimal, and i t i s essential t ha t a l l solder i s removed from both the p i n and the land. Care must be taken, when making measurements, so tha t the p i n i s not shorted t o the land.

74. I t cannot be over-emphasised that care must be taken a t a l l times during such operptions due t o the f r a g i l e nature o f the motherboard tracking and module pins.

Issue 3, Jan 93 Page w

ELECTRICAL AND WE-CAL TELECOMM[MICA !PIONS ENGINEERING BEGULATIONS F 584 Par t I

Section 2

Spec i f i ca t ion Test No.

3

I

(

4

1

1

1

I

31

Issue 2 , Dec 78

Indicat ion

'Rc power output

Outside l i m i t s

Outside l i m i t s

Outside limits

Outside l i m i t s

Outside l i m i t s

Outside l i m i t s

Outside l i m i t s

Outside l i m i t s

Outside Limits

Outside l i m i t s

Rx inoperative

Rx inopeqative on one band Outside linits

Outside l i m i t s

Squelch inoperative Outside limits Outside l i m i t s

Squelch inoperative Outside l i m i t s

Outside l i m i t s on one band only Outside limits on both bands

Eb output o r outs ide 1 i m i ts Outside l i m i t s Outside limits Outside l i m i t s No output from one audio socket

Suspect

(16) (17) (3) U,L

(7) Check f o r OVM If cor rec t suspect (7) (6) (5: If incor req t suspect (9 1.

Remote assembly (7) 251, (7) Remote assembly, ( 6 ) (7

Remote assembly

I D5 Page 41

' F 584 Part 1 Section 2

m C A L AND H E C m C A L MQ- REGUTATIONS

Specification Test No.

Table 28 - (cont).

Indication --

Outside limits

No output Outside limits

No output o r outside l imi t s Outside l imi t s

Outside l imi t s

Outside l imi t s

Outside l imi t s

Outside l imi t s

EOT transmits No Ek signal No tone No audio

Suspect

(20) Remote assembly (20)

Remote assembly Remote assembly

Remote assembly

Remote assembly

(9) Remote assembly

Remote assembly

(20) Remote assembly (9) Remote assembly Remote assembly Remote assembly

Use of f i e l d repair t e s t kit

78. With the EOT f i t t e d to the test? j ig, access to all in terna l t e s t points is available on the assembly s ide of the EUT. The motherboard s ide of the equipnent is covered by the two perspex doors of the t e s t jig. These m e engraved with the assembly boundary l ines and assembly pin numbers, and have holes corresponding to the assembly pins. Access to the motherboard is achieved by opening the respective door, one of which covers the transmitter s ide, and the other the receiver side.

79. Typical voltage and signal levels are given i n Table 4001.

Connection of equipnent on t e s t j i ~ to TRE

80. When the EUT is to be used on an unprotected supply, connect the supply protection uni t t o the battery input terminals on the t e s t jig.

81. When EOT is to be used on TRE (protected supply) connect supply lead (item 4) from CS 7 to battery input terminals on t e s t jig.

82. Using connector (item lo ) , connect the audio socket on the Chnsman interface t o the audio socket on EUT remote panel.

83. For receiver t e s t s , connect CTC 20 to BECFJ'VZ socket on t e s t jig.

84. For transmitter t e s t s , connect CTC 20 to TRANSHIT socket on t e s t jig.

Page 42 D6 ' Issue 2, Dec 78

ELECTRICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 594, P a r t 1

Sect ion 2

Note.. . These Pages 43 and 44, Issue 4, supersede Pages 43 and 44, Issue 3, dated Jan 80. F igure 7 has been amended.

Table 16 - Capaci tor t e s t readings

121 To i n d i c a t e the c o r r e c t f unc t i on o f t h e au to- t rans fo connect the e.u.t. as i n F i g 7.

Tes t

C 1 w i t h C2 shor ted

C 1 and C2 i n se r ies

I

, *

'L SIGNAL

TUNER GENERATOR

1

2570/118 i- RT 320 TURF

12.00 26.00

16.00

AC PROBE

O SIG GEN v v WITH ADAPTOR TO TURF

VALVE VOLTMETER

'/P

F i g 7 - Connections f o r auto- t ransformer and LOAD sw i t ch t e s t i n g

E

SIGNAL GENERATOR

Issue 4, May 89 (14s) Page 43

1 5/8 t o 2 1/8 t u r n s

Vol tmeter O/P ( v o l t s )

0.62 - 0.77 0.55 - 0.82

0.28 - 0.38

I I ( from max I 0*18 - 0*23 I

RT 320

oSIG GEN TURF 'Ip TEST SET

RANGE Swi tch

D D

E

RT 320

TURF E 0

O 2 5 / 2 5 0 ~ O/P ANT

,

AdjustTUNE f o r peak

1/4 t o 1 t u r n f rom min 1 t o 1 7/8 t u r n s froin max

1/4 t o 7/8 t u r n s from mi n

-+3 0 E

ANT - INT TUNER SOCKET

TELECOMMUNICATIONS ELECTRICAL AND MECHANICAL F 594, P a r t 1 ENGINEERING REGULATIONS Sect ion 1

0

Set the t e s t se t TEST FUNCTION swi tch t o ' E l . Set the e.u.t. RANGE swi tch t o ' C ' and the TUNE c o n t r o l f u l l y clockwise.

Set the s igna l generator t o 1.00 MHz and output l e v e l t o 1.0 V .

Switch the LOAD swi tch t o each o f i t s 9 p o s i t i o n s i n t u r n and record t h e output meter readings. These are t o be w i t h i n t h e l i m i t s g iven i n Table 17.

Tab1 e 17 - Auto- t ransformer readings

Vol tmeter

Page 44 Issue 4, May 89

EUECTRZCAL AM) laXX4NICAL ~COHHONLCATIONS ENG-NG REGULATIONS F 584 art I

Section 2

A l i m e n t procedures

89. Alignment m u s t be ca r r ied out i n the order spec i f i ed and adjustments made i n t he order given.

Caution: Do not ad jus t any component not de ta i l ed , pa r t i cu l a r l y on assemblies (15) and (17).

90. Set TRF: and EUT switches as given i n !Cable 30.

Table 30 - Alignment procedure s v i t c h s e t t i n g s

CS

1 VEH 24 2 V E H V 6 Released

(ON)

L

CTC

Rxm AF IAAD 150 Released Released Depressed Released Released Released Released Depressed Released AF AF CARRIER om INT

91. Converter output voltages.

3 Released 4 Released

ETJT connections:

CS 7 t o ba t t e ry terminals (item 4 ) IF(C) 5 t o 22SKl (item 10) Using item 7, connect CTC 20 t o t e s t j i g Rx

a. Note DVM indicat ion vhich shall be 24 W.2V.

b, Depress CTC 3.

c. Using su i t ab l e l e ads connected t o DVM ACCESS texminals (CW 16 and 171, m e a w e the d.c. voltage at 2TP4 w.r.t. chass i s (ear th) which shall be 6.1 W.OgV. Adjust (19) R1 as necessary t o obta in this voltage.

d. Using Wn, measure the voltage at the fo l l o r i ng pins (w.r.t. ea r th ) which shall be within the l i m i t s s ta ted :


~ O ~ C A T I O N S ELECTRICAL AND HECHANICAL t;"' F 584 Par t 1 ENGI-G REGULA!L'IQr?S

Section 2

92. Osci l la tor alignment.

a. Disconnect l ead t o t e s t j i g Rx socket.

b. Using FRTK item 8 ( 2 2 ~ ~ cable), connect CTC 21 t o 2lP2 and earth.

c. Using TRE items 20 and 21, connect CTC 16 and 17 t o 2TF"l and earth.

d. Set C E 12 t o ACCESS, CTC 1 t o CV.

e. With CTC 11 depressed o r released ae de ta i l ed i n Table 31, and FSS on EUT s e t t o the s e t t i n g s specified, check D W and counter indication8 f o r each condition, adjus t ing the var iable component shown t o achieve the l imi t s . Repeat t e s t u n t i l no fur ther improvement is obtained.

Note: Under ce r t a in conditions, the EUT may not produce LK s igna l with - CTC 11 depressed. If t h i s occurs, s e t CTC 12 t o AF, depress C!CC 11 and allow EU!l! t o lock. Keeping CTC 11 depressed, s e t CTC 12 t o ACCESS, and counter w i l l i nd ica te correctly.

Table 31 - Osci l la tor alignment t e s t da ta

cn: 11

Depressed Released Released Depressed Depressed Released Released Depressed

f . Record DVH indicat ion, a f t e r f i n a l adjustment , as reading A.

g. Remove DVM lead from 2TP1, and connect t o (814.

COUNTER (MHz * 0.001) I ADJUST

I

h. Note DVM indicat ion, which shall be within -1.0 t o +0.6v of reading A.

FSS

93. Loop amplif ier a l i m e n t .

a. Transfer D W access connections from (8)4 t o 2lP3.

b. Adjust ( 8 1 ~ 2 as necessary t o obtain a D W indicat ion of 2.278 t o 2.322~.

c . Set FSS on EUT t o 48000.

d. Adjust ( 8 ) ~ 7 as necessary t o obtain a D W indicat ion of 4.278

DvM (V) I

Page 46

-

1~10 ~ s s u e 2, h c 78

XUXTRICAL AND )JECHAKI:CAL !l!ELECOM3UKICATIONS ZIGIREEUNG REGULATIONS F 584 Part I

Section 2

94. Reference oscillator.

a. ws procep e must only be carried out at an ambient temperature of +I5 C to +w C. b. Note and record the OFFSET frequency, marked on 2KL1, as FO.

c. Set FSS on EUT to 52475.

d. Note and record counter display as reading A.

e. Calculate the difference, in Hz, between reading A and 64.000000MBz + IOR), noting vhether the difference is high or low. Proceed as follovs:

(I) If the error is equal to or less than fIOOEz, no adjustment is required. ,

(2) If the error is greater than 770Hz, replace 2WL1 and carry out complete alignment of EUT.

3 If the error is between 100 and 770H2, carry out the following adjustments to 2ML1:

(a) Examine 2KL1 and if there are any links between its ageing pins, carefully unsolder and removesthem.

(b) Re-check the frequency indicated on t& counter. It must be 64,000,000 f770Hz. If now renew:.ZMLl.

(c) Using Table 32, select the appropriate combination for the ageing links on 2ML1 and make the necessary interconnections using suitable wire and sleeving (eg 24 s.w.g. tinned copper wire and 1 mm heat resistant sleeving).

Notes: 1. For a LOW error, connect pins det&-led to EARTH.

2. For a HIGE error, connect pins detailed to 2ML1 pin 8.

Table 32 - Ageing pins frequency error correction X I , Pin 1

a f. After carrying out adjustment, repeat procedure.

Issue 2, IIec 78 Page 47

JTEUCONHUKI:CATIONS ELECTRICAL AND HECHANICAL : F 584 Par t 1 ENGINEERIN EEGUU'ITONS

Section 2

95. Frequency selection.

a. Connect C!lK 20 t o t e s t j i g Ik socket.

b. Set CTC I t o CU Ik.

c. Se t FSS on 'EOT t o the following frequencies i n tu rn and, at each frequency, note counter display which shall be within f l k m of the frequency selected:

d. Se t C E 1 t o CW.

e. Remove connections t o 2TP2 and earth.

Transmitter modulation s e t t i ngs

Transmitter deviation due t o microphone input.

a. The aim is t o s e t the t ransmit ter deviation such t h a t the t ransmit ter o s c i l l a t o r low-band is deviated by f5.15kHz t o *.3%& and tlie t ransmit ter o s c i l l a t o r high-band is deviated by f5.20kH.z t o f5.30kHz due t o modulation frequency of ?kHz applied t o the microphone input terminals at a l e v e l of 3 V pod.

b. Method.

(1 ) Set CTC 1 t o PILOT TONE.

(2) Se t CTC 12 t o AF.

3 S e t C T C 1 3 t o AF.

(5) Set SSV to * (noise on).

(6) Set ROS t o L.

(7) Depress CTC I1 as and when required.

(8) Set HH range t o %Hz.

(9) Adjust ( 1 3 ) B f o r m i n i m u m deviation reading.

(10) Svitch Hn t o the flOkHz range. Note the Hn reading (N). This deviation is due t o noise and s h a l l be l e s s than ii1.6kBz.

ELECTRICAL AND KECBANICAL TELECOMMUNICATIONS ENGQEERING BEGOLATIOM F 584 art I

, Section 2

(71) Set CTC 1 to MOD ST. I

(12) Set AFC to a single tone of IkHz.

(13) Set AFG output voltage attenuator to XD.1.

(14) Set Al% attenuator to 600mV e.m,f.

(15) Adjust (141R15 for a I@! indication of (N+(5.20 to 5.30))kHz.

(18) Tune the MM and switch to the +lokHz range. Note the MM reading (Nl). This deviation is due to noise and shall be less than iO.4kHz.

(19) Set C!l'C I to MOD ST.

(20) Adjust (14)R2 for a MM indication of (N1+(5.15 to 5.35))kHz.

97. Loudhhisver control.

a. Set SSW to WHISPER.

b. Decrease AFG attenuator setting until the HM (N1+(5.15 to 5.35))kHz. The AFG attenuator setting 100 and 1 m V e.m.f.

98. Xodulation control.

a. Set SSW to* (noise on).

b. Increase the AFG attenuator setting to bClmV e.m.f.

c. Set AFG output voltage attenuator to XI. HM indication shall not exceed (N1 + 6.35)kHz.

99. Modulation response.

a. Set AFG attenuator to 10mV.

b. Note the HH reading (N2).

c. Note the difference in HM indication for the modulation frequencies listed in Table 33 with respect to N2.

e Issue 2 , Dec 78 Dl3

TELECOMMUNICATIONS ELEXTRICAL AND MEXXiWCAL "!%F 584 Part I ENGINEEZING REGULATIONS

Table 33 - Modulation response limits Hod Frequency Response w.r.t. IkHz

IOOHz Greater than 14dB down 'tOOHz Between I and 7dB down -Hz Between 0 and 4.5dB down

3 , m H z Between 0 and 5.5dB down 6 ,OOO& Greater than 10dB down 20,oOOHz Greater than 1 6 d ~ down

100.

a. Set AM3 attenuator to 600mV.

b. Set MG frequency to IkHz.

c. Note CRO display and verify that waveform is not distorted.

101. Variation of deviation with channel frequency.

a. Adjust AFG attenuator for MM indication of Nl + 5kEIz.

b. Maintaining the AFG input constant, note the deviation at channel frequencies of 30.050n82 and 47.950MBz. The MM shall indicate between k(N1 + 4.0)kHz and +(N1 + 6.0)kHz.

c, Set FSS to 62.025HHz.

d. Tune the MM and switch to the k10kHz range. I

e. Adjust AFG attenuator for MM indication of N + %Hz.

f. Haintaining the AFG input constant, note the deviation at channel frequencies of 48.050~~z and 76.050MBz. The MM shall indicate between f ( N + 4.0)kHz and z ( N + 6.0)kHz.

102. Transmitter deviation due to 150Hz internal tone.

a. The aim is to set the transmitter deviation such that the trans-' mitter oscillators are deviated by +1.65kHz due to the 150Hz internal tone.

b. Method.

(1) Set FSS to 39.025MBz.

(2) Set CTC I to PILOT TONE.

3 Tune the HH and switch to the k 3 H z range.

(4) Note the MH reading (m). This deviation is due to noise.

Issue 2 , Dec 78

EIlFXTRICAL AND HECHANICAL TEf;ECmCATIONS ENGINEERING REGULATIONS F 584 art 1

Section 2 1

e (5) Adjust ( 1 3 ) ~ 9 f o r a HI4 indicat ion of N3 + 1.7kH.z.

( 6 ) M j u s t (131R4 f o r a counter indicat ion of 750fIz.

Note: Potentiometers (13)Rg and (14)R2 i n t e r a c t , therefore i f one - o r the other is re-adjusted i t is necessary t o recheck the t e s t s de ta i l ed under paragraphs 96 and 102.

103, Receiver modulation s e t t i n g - Receiver squelch tone and deviation.

a. The aim is t o ensure t ha t t he receiver squelch.tone is approximately 1 6 0 ~ ~ and t o ver i fy t h a t this tone devia tes the receiver o s c i l l a t o r s by f 1 .%Hz.

Note: The HM must be ca l ib ra ted on its *%Hz range as de ta i l ed - i n Section I , para 9.

b. Hethod,

a (1) Set CTC I t o PILOT TONE.

(2) Set CTC 12 t o AF.

(3) Se t CTC 13 t o AF,

(4) Set FSS t o 39.025XHz,

(5) Set SSW t o * (noise on).

(6) Set ROS t o L.

(7) Unplug the TRE feeder a t t he r.f. input point t o the MM. *

(8) Connect the FRTK item 8 (22pF cable) from the HM r.f. input point t o 2TP2 and earth.

(9) W e the MM t o the receiver o s c i l l a t o r frequency ( 5 0 . 5 5 0 ~ ~ ~ ) and switch t o the 53kHz range.

(10) Verify on the CRO that the 160112 squelch tone is present.

( I? ) Set ROS t o A.

(12) Verify on the CRO t h a t t he 160Hz squelch tone is inhibited.

(13) Note KM indicat ion (N) which shall be l e s s than W.35kH.z. This deviation is due t o noise,

(14) Set ROS t o L.

(15) A d j u s t (12)R2 f o r a HM indicat ion of N + 1.5kHz.

(16) Note counter indicat ion which s h a l l be 157.5 t o 161.5H.z.


E l

!ELECOMMJNICATIONS 3 ELECTRICAL AND MECHANICAL

v F 584 Part 1 ENGINEERING* REGmATIONS Section 2

(17) Set FSS to 62.025~82.

(18) Tune the IQf to the receiver oscillator frequency (73.550~~z) and switch to the +%Hz range.

(19) Verify on the CRO that the 160Hz squelch tone is present.

(20) Set ROS to A.

(21) Verify on the CRO that the 160H.z squelch tone is inhibited.

(22) Note Hn indication (Nl) which shall be less than M.3rcBzO This is deviation due to noise.

(23) Set ROS to L.

(24) Adjust (ll)R2 for a MM indication of N1 + 1.5kHz.

(25) Note counter indication which shall be 157.5 to 161.5Hz.

(26) Disconnect the FRTK item 8 (22pF cable) from the MH r.f. input point and 2TP2 and earth.

(27) Reconnect the TRE feeder at the MM ref. input point.

104. Transmitter output.

a. On EUT, set FSS to 47975, and SSW to L.

b. Connect CTC 16 and 17 to EUT (18112 (+ve) and (1814.

c. Set CS 1 to VEH14-33. I

d. &sure CS 2 is set to VEH V.

e. Depress CTC 5 and adjust CS 4 for DVM indication of betveen 19.9 and 20.1V.

f. On EUT, set (181~6 fully clockwise-

g. Depress CTC 3, set CTC 1 to CW Tx.

h. Adjust (181~13 until DVM indicates between 1.15 and 1.X)V.

j. Depress CTC 5 and adjust CS 4 until DVM indicates between 26.4 and 26.6V.

k. Set CS 2 to VEH A and adjust (18)~6 until DVH indicates 86.8mV. Adjust for maximum if this indication cannot be obtained.

1. Set CS 2 to VEX V, and adjust CS 4 for DVM indication betveen 21.9 and 22.1V.

m. Set FSS on EUT to 30050.


ELECTRICAL AND )IECHANICAL ENGIcYEWING REGULATIONS

~OHMRUICATIONS F 584 Par t I

Section 2 1 /

n. Set CS 2 t o VM A.

o. Note DVH indicat ion which s h a l l be l e s s than 86.8mV.

p. Depress CW 7.

q. Note and record DVM indicat ion which shall be g r ea t e r than 1.871V (= 3.6W r f output power).

r. Repeat from sub-para m. with on EOT s e t t o t he fol loving frequencies (kHz) i n turn:

Note: I f the r e f . power output is generally high, s e t FSS t o the - frequency which produced the lowest output, and ad jus t ( 1 8 1 ~ 6 t o obta in a DVM indicat ion of g rea te r than 1.871V, then repea t from sub-para m.

s. Se t C'K 1 t o W.

105. S ~ u r i o u 6 rad ia t ion - second harmonic. A spectrum analyser is required t o carry out these t e s t s . P rac t ica l d e t a i l s vill depend on t he type of analyser used, For fu r ther d e t a i l s see Section 1 , para 13.

106. Receive audio output.

Se t CTC 1 t o Rx FM.

Se t CTC 14 t o SIGNAL.

Trasnfer connector at t e s t j i g Tx socket t o Rx socket, B

On EUT s e t FSS t o 39025, SSW t o L.

Set RFG t o 39.025MHz modulated by ?kHz at *Hz deviation.

Se t RFA t o 2OdB.

Depress CTC 7.

Ad jus t ( 7 1 ~ 1 u n t i l D W ind ica tes 670mV.

Se t SSW on EUT t o W.

Note DVM indicat ion which shall be between 67.0 and 1 0 6 . 2 1 ~ ~

107. Receiver s ens i t i v i t y ,

a. On EUT, s e t FSS t o 30000, ROS t o A, SSW t o . b. S e t HTii t o 30,000HHz modulated by IkBz at =Hz deviation.

c. Set RF'A t o 106dB (5vV1,

Iesue 2, Dec 78

TELECOMHlTNICATIONS EIzZTRICAL AND IamANICAL f~ 584 Part 1 ENOfNEEBIRG Rl3GVLAmNS

Section 2

d. Depress CTC 3.

e. Connect HP r e f . probe type 11096 (DVH CES item) between C!l!C 16/17 and 6TPl/earth.

f . Note DVH indicat ion ( 1 8 0 ~ range) and adjust the following components i n the order given fo r m a x i m u m Dm indicat ion, reducing RFG output where necessary t o prevent l imi t ing:

g. Set FSS and RFO frequency t o 47.975KHz.

h. Adjust t h e following components, i n the order given f o r mcudmum DVX indication:

j. Set FSS and RFG frequency t o 48.000MIIz.

k. Adjust the following components i n the order given fo r mcudmum DVM indication:

1. Set FSS and RE'G frequency t o 76.000MHz.

m. Adjust the following components, i n the order given f o r maximum DVM indication:

n. Disconnect l ead between 6wi and CTC 16/17.

108. Sip;nal. t o noise + noise check.

a. Set CTC 2 t o S + N.N.

be Set FSS and RFG t o 30.025MHz.

c. Set RFA t o 120dB (1pV).

d. Depress CTC 7, s e t CTC 14 t o MOD OFF.

e. Note and record DVMindication as reading A.

f . Set CTC 14 t o SIGNAL and ad jus t CTC 15 u n t i l DVX ind ica tes reading A.

g. Note s e t t i n g of CTC 15 which s h a l l be not l e s s than 74 (greater than 17dB).

h. Repeat t e s t with FSS and RFG s e t t o the following frequencies:

39.025, 47.975, 48.025, 62.025, 76.025MHz.

Issue 2 , Dec 78

T.ELECOMHmyICATfONS F 584 Part 1

Section 2

@ 109. Iimitinp;.

a. Se t CTC 2 t o AF LOAD 150, CTC 14 t o SIGNAL.

b. Note and record DVH indicat ion as reading A.

c. Set RFA t o 20dB.

d. Note DVM ind ica t ion vhich shall be not g r ea t e r than IdB . above reading A.

110. Receiver spurious response.

a. Set RFA t o 120dB.

b. Ensure and RFG frequency is '76.025WBz.

c. Set CTC 14 t o MOD OFF.

d. Note and record DVM indicat ion as reading A.

e. Set RFG frequency t o 99.075KHz.

f . Reduce RFA s e t t i n g u n t i l D W ind ica tes reading A. Note RFA s e t t i n g which shall be not g rea te r than 24dB.

g. Set FSS and RFG frequency t o 47.975HHz.

h. Set RFA t o 120dB.

j. Note and record DVM indicat ion as reading B.

k. Set RFG frequency'to 71.025MY.z.

1. Reduce RFA s e t t i n g u n t i l DVH ind ica tes reading B.

m. Note RFA s e t t i n g which s h a l l be not g r ea t e r than 19dB.

111. Squelch s e t t i nq .

b. Set RE% frequency t o 76.025~~12 m o d u l a t e d (switch OFF tones A and B of the AFG).

c. Set CTC 7 t o Rx FM, CTC 2 t o QUIETING, C E 14 t o CARRIER OFF, CTC 15 t o 42.

d. Depress CTC 7 and note the DVM indicat ion as reading A.

e. Set C E 1 4 t o SIGNAL.

f. Adjust RFA u n t i l the DVM ind ica tes reading A.

Issue 2, Dec 78 - Page 55

! l ' E L E C O ~ C . A T I O N S ELECIIRICAL AND HECHANICAL ,@ F 584 Part 1 ENGINERING RlmIATfOS ' Section 2

g. On ME, s e t tone B t o 150Hz. Switch on tone B. Adjust the l eve l of the ME t o cause a c a r r i e r deviation of fI.2kE.a, (Use-Mt 9 0 0 8 ~ t o monitor t h i s deviation).

h. On EOT s e t SSU t o L.

j. Adjust potentiometer 9bR2 slowly clockwise u n t i l the squelch jus t opens ( i e continuous a.f. output).

Note: I f the squelch is open p r io r t o this adjustment tu rn 9bR2 - . f u l l y anticlockvise before s e t t i n g the squelch opening point.

k. A t the opening point , depress CTC 3 and connect remote panel test pin 12 and ea r th t o CTC 16, 17.

1. Note the D W indicat ion which shall be between 2.500 and 6.100V.

m. Switch o f f tone B and note t ha t the EOT is muted.

n. Switch on tone B and slowly reduce the s e t l e v e l control on the s igna l processor u n t i l the EUT jus t mutes.

p. Note the dB l e v e l on the output meter as reading B.

q. Increase the s e t l e v e l control u n t i l the output meter ind ica tes OdB. (Note t h a t the mute has l i f t e d ) .

r. On the A N , s e t tone B t o 148Hz.

s. Repeat sub-para n. noting the l e v e l a t which the EUT mutes. This shall be 0 to +2dB of reading B.

t. Set tone B t o 1 6 2 ~ ~ . s

u. Repeat sub-para n. noting the l e v e l at which the EUT mutes. This shall be 0 t o RdB of reading B and fldB of the reading obtained f o r 148Hz.

Note: I f e i t h e r the 148Hz o r 1 6 2 ~ ~ r e s u l t is outs ide limits, - adjust 9Rl as follows:

(1 ) Depress CTC 3.

(2) Using su i t ab l e l eads connect (918 and ea r th t o C!E 16, 17.

( 3 ) Set RFG frequency t o 76.025MHz modulated by 150Hz t o give a deviation of I .2kHz (use tone B).

(4) Adjust (9)Rl t o give a flat response f o r modulating frequencies of 1 4 8 ~ 2 t o 162Bz.

( 5 ) Disconnect l eads from(9)8 and earth.

(6) Depress CTC 7.

Issue 2 , Dec 78

EllFXTRICAL AND HEHANICAL TELECOMMUNICATIONS ENGINEERING REGDLATIONS F 584 Part I

Section 2

0 (7) Repeat alignment from sub-para a.

v, On EUT set ROS to 2, and SSU to r . we Set BFG to 76.025HHz unmodulated (tones A and B off) and BFA to 139dB.

x. Set CTC 14 to CARRIER OFF and C W 15 to 50.

y. Depress CTC 7 and note Dm indication as reading C.

z. Set CTC 14 to SIGNAL.

aa. Adjust m A until DVM indicates reading C.

ab. Set SSW to L.

ac. Adjust potentiometer IlbR2 until the squelch just opens continuou~2?-.

ad. Depress CTC 3. Note the D W indication which shall be less than 0.5V.

ae. Depress CTC 7.

af. Set FSS on ETJT to 47.950MHz and SSW to * ,

age Set RFG to 47,950MHz and RFA to 139dB.

ah. Set CTC 14 to CARRIER OFF, and CTC 15 to 50.

aj. Note D W indication as reading D.

ak. Set CTC 14 to s~GNAL.

a,. Adjust ILFA until DVM indicates reading D.

am. Set SSW bn EUT to L.

an. Adjust potentiometer 12bR2 until the squelch just opens continuously.

ap. Depress CTC 3. Note DVM indication which shall be less than 0.5V.

112. Remote panel voltwes,

a. Set CS I to VEH 24, CS 2 to VZZ V.

be Depress CTC 5 and note DVM indication which shall be between 23.8 and 24.2V.

c. Depress CTC 3, and using DVH access terminals ( C E 16, 17) and items 20, 21 measure the voltage at remote panel test pin 1 w,r.t. earth which shall be betveen 23.8 and 24.2V.

d. Measure the voltage at remote panel test pin 8 w.r.t. earth which shall be between 3.003 and 3.246V.

Note : The next page is Page 1001 - Issue 2 , Dec 78

ELECTRICAL AND WECHANICAL llELECO~CATIONS ENGzNEEpING RECIaATfONS F 584 Part I

Section 2

e !fable 4001 - RT 351 voltage and signal l eve l s

This tab le of voltage and signal leve ls must be read i n conjunction v i t h the RT 351 system6 diagram, (Tels F 382 Fig 2001).

The information i n t h i s table is issued as an a id t o f a u l t finding only, and i t must be accepted tha t variations between different equ ipen t s w i l l occur.

!5i6 table was compiled using the TRE and all l eve l readings a r e TRF, indicated voltage l eve l s with AF LOAD s e t t o OC and IS INT depressed.

D.C. supplies

BATT. Nominal 24V LL 23-99V a 24 .01~

CONSUMPTION. Receive a 125m~ Transmit 870mA

Converter assembly (19)

Switched doc. supply voltages assembly (20) and (14)

0

N o m i n a l

Pin

I 2 3 4 5

Issue 2, Dec 78

High Band Low Band

UL

3.246 6.11 9.26

17.83 112.3

Nominal

3 6 9

77 100

Receive

LL

3-03 6 .og 8 739

16.17 98.8

Eligh Band

E 8

Low Band

T'EJXCOMMUNICATIONS ELECTRICAL AND MECBAMCAL F 584 Part 1 ENGINEERING REGULATIONS Section 2

Table 4001 - (cont) e Band switching assembly (17) and (18)

These voltages m a y vary v i t h d i f f e r en t equipment.

BSw 8, B, BSV H and H indicate which f i l t e r is i n operation, eg, with the switch t o HIGH BAND, a low voltage on BSw H and H ind ica tes the high band f i l t e r is i n use, while the high voltage on BSw 8, and ind ica tes the low

0 band f i l t e r is not i n use.

d

BSw BSW B BSw H 73 H VF'A AGC

Synthesizer input vo l tmes assembly (10)

I. Frequency s e t t i ngs 30.000-30.075MIz

High Band

23 50 20 - 40 20 X)

5 t o 9

2. Frequency s e t t i ngs 30.000-9.q00MHz

Low Baad

23 20 50 20 40 20

5 t o 9

4. Frequency s e t t i ngs w.000-70.000HHz


zZlm!RICAL AND HECHANIW ~ O M M U N I C A T I O N S ENGINEERING REGULATIONS F 584 Part 1

Section 2

@ Table 4001 - (cont)

Oscillator control vo l twes assembly (8) and (10)

Command v o l t ~ e s

vc V t (RF) vt (OSC)

EUT logic commands

ov ovc OVES OVH OVIc om 0vi;i om oHb o v s ow ov& 0%b ow O W ow

A, C . VOLTAGF CONDITIONS

RECEIVE

b w Band

Receiver audio assembly (7)

i

Bigh Band

3O-OOo

4 3 4-5 4.5

Opposite condition

48.000

4.3 4-5 4.5

47 975

2-3 82 82

EUT 2S1 to IDlJTl, UHISPER or OFF, but NOT to NOISE ON ( * 1. -

76soo0

2.3 82 82

22S1 to LOCAL.

a Issue 2, Dec 78

I

Pin

3

Input

Frequency

10oOHz

Output

Level

0.8~

Pin

22SKID

Level

0.5V

- a TELECOHNUHI:cATIONS .' - F 584 Part I

Section 2

ELECTRICAL AND HECHAKI:CAL ENGINEERING REGULATIOm

Table 4001 - (cont)

2S1 to NOISE ON ( * ).

2231 to LOCAL

Squelch assembly ( 9 )

Pin

4 I

22S1 to AUTO

I I Input I Output

DC switchinp; assembly (20)

EUT 2S1 to LOUD - 22S1 to CALL

Input

Frequency

1000Bz 1OOOHz

Output

IF amplifier assembly (6) '

EXIT 2S1 to NOISE ON ( * 1. - 22S1 to LOCAL

Level

10mV 70mV

Pin

22SRID 22SKfD

Pin k

19

Page 1004

Level

I .OV I .OV

4

Output

Frequency

2ooo&

I

' E l l

Level

20mv

Issue 2, Dec 78

ELECTRICAL AND MECHANICAL ~OMKUNICATIONS EMGIHEERING REOmd'i'IONS F 584 Par t ? - *

Section 2

m 2S1 t o LOUD - 22S1 ti AUTO

Pin

TP1 1

Pin

22SKID 22SKID

R.F. head assembly (5)

EUT 2S1 t o NOISE ON ( + ). - 22Sl t o LOCAL

frequency

I1 -525MHz 11 ,525KKz

Level

I V 1 V

Input Output

LeveT Pin

I

Hod. R e q

IOOOHz 100OHz

Receiver o s c i l l a t o r assemblies (11 ) and (12)

EUT 2S1 t o NOISE ON ( * 1. - 22S1 t o LOCAL

Frequency

11 .525m

Output I 1 1

Deviation

* %a * 5kHz

Input

Frequency

Level

OOOdb 70db

Hod. Freq

IOOOHZ 150Hz

Pin

5SK1 ?SKI ASK2

Output

LOW BAND LOW BAND XIP& BAND HIGH BAND

. Pin

22SKfD 22SKID 22SKID

Pin

Deviation

2 %HZ * 1.3kHz

Frequency

EUT FREQ Enrr RWQ EUT FREQ

Level

1 V 1 V IV

Level

70db

Issue 2, Dec 78

Hod. F'req

1000Hz 1OOOHz IooOHz

Unit 11 l e v e l

- - loo-3oonlv

40mv

I

El 2

Unit 12 l e v e l

loo-3oOmv 40mv - -

Deviation

2 %Hz * S k k * 5 . b

Level

12Odb 12Odb 120db

" TELECOMKDNICATIONS F 584 Par t 1 Section 2

ELECTRICAL AND HECMiCAL ENGINEERIIVG REGbLAT1:ONS

Table 4001 - (cont)

TRANSHIm

Transmitter audio assembly (13)

EUT 251 t o NOISE ON ( * ) - 2.31 t o LOCAL

EUT t o TRANSMIT

Input frequency lkHz

m . 2S1 t o NOISE ON ( ) - 2251 t o LOCAL

EUT t o RECEIVE

Output 1:l m v

Input

!I?ransmitter assemblies (141, (15) and (17)

EUT 2S1 t o NOISE ON ( * ) - 22S1 t o LOCAL

Pin

22SKlA 22SKlA 22SKlA 22SKIA

Output

m t o TRANSMIT

Level

100mV l 0 0 m V 100mV Zero

Pin

1 5 7 5

Level

4OmV 4OOulV

10mV 3mv

2582/Tels

Page 1006

Outputs

EM> of Section 2

frequency

LOU BAND HIGH BAND

Issue 2, Dec 78

.

Unit 14

Pin

14 13

Level

3 - 1 2 C h ~ V 3-130mV

un i t 15

Pin

5 5

U n i t 17

Level

0 .6- i .1~ 0.6-i .1~

Pin

2 2

I ave l

15-28V I 5-28V

EUECTRfCAL AND HECHJWICAL TEIECOMMUNICATIONS + ~ E N & ~ E R I [ N G E~~ECXJMIONS F 584 Part 1

C. (BY Coma& of the Defence council) Section 3

CLANSMAN RADIO, W R C 351 AND UK,@RC 352

TECHNICAL HANDBOOK - FIELD RGPAIRS

SECTION 3 - AMPLIFIER R.F. 20 WATT (AM 352)

Note.. . These Pages 1-15, Issue 4 supersede Pages 1-70 and 13-25, Issue 2 dated Dec98, Pages 71-12, I s m e 3 dated Oct 79 and Page 0, Issue 2 dated M a r 82. The information has been completely revised.

. CONTENTS

WARNING GENERAL Scope of repa i rs ... ... ... ... ... ... ... ... ... ... . I Field repa i r t e s t equipment ... . ... ... . ... ... ..* 2 GENERAL =AIR .INFORMATION V.H.F. drive unit ... ... ... ... ... ... ... ... ... ... 3 Field r epa i r t e s t k i t ( f .r . t .k . ) ... . ... ... ... ... ... 4 In t e rna l iden t i f i ca t ion . . . . ... ... ... ... ... 5 Labels ... ... ... ... ... ... ... ... ... ... .,. . . 6 Repainting ... ... ... ... ... ... ... ... ... ... . . 7 GENERAL REPAIR INSTRUCTIONS Dismantling and ressembly of equipment . . . . . . . . . . . . . . . . . 8 F i t t i ng and removal of AM 352 on t e s t j i g .. . .. . .. . . . . . . ., . . 9 Removal and replacement of assemblies ... ... ... ... . . 10 Removal. and replacement of discrete components ... ... ... . ..- 73 . Desiccators ... ... ... ... ... ... ... ... ... ... .., ,., 17 Drying and sealing . . . . . . . . . . . . ... . . . ... . . . . . . . . . 18 Mechanical repairs ... . . ... : ... ... ... ... ... . 20 SPECIFICATION TESTS General ... ... ... ... ... ... ... ... . . ... ... 21 SPECIFICATION TESTS Test 1 - Leakage current . ... ... ... ... ... ... ... . 22 Test 2 - Standing doc. l eve l s ... ... ... ... ... ... ... ... 23 Test 3 - Power t ransfer . . . . . ... ... ... . 24 Test 4 - Low power input ... ... ... ... ... ... ... ,.. . 25 Test 5 - Current drain ... ... ... . ... . ... ... ... 26 Test 6 - Current drain in to mismatch loads of 3: I and 1:3 r a t i o s . . . 27 Test 7 - L o w voltage t r i p . .. . . . . . . . . . . . . . . . -.. 28 Test 8 - Negative voltage t r i p . . . . . . . . . . . . . . . . ... 29 FA^ FINDING General ... ... ALIGNMEW l! General

Issue 4, Page I

TELECOMMUNICATIONS F 584 Part 1 Section 3

......... Set t ing up Power output alignment A.G.C.

Table - 1 2 3

adjustment ...

Lis t of t e s t equipment Frequency se t t ings ... Fault diagnosis ...

EIECTRICAL AND MECHANICAL ' ENGINEERING REGULATIONS

Page

Page

Leakage current t e s t ........................ 7 8 Standing d.c. l eve l s t e s t .....................

Sett ing up procedure fo r Test 3 . . . . . . . . . . . . . 8 Test procedure . . . . . . . . . . . . . . . . . . . . . . . . 9

a Alignment se t t ing up procedure .................. 13

GENERAL

Scope of repa i rs

;, Repair at F ie ld workshop l eve l is by replacement of fau l ty components and assemblies.

F ie ld repair t e s t equipment

2. The t e s t equipment l i s t e d i n Table I is required to carry out Field repa i rs , t e s t ing and alignment.

GENERqL R E P A I R INFORMATION

V.H.F. drive un i t

3. The v.h.f. drive unit (v.h.f.d.u.) is used t o provide r.f. power and certain t e s t conditions f o r the AM 352. For de ta i l s see Tels M 720. No attempt is made i n t h i s regulation t o describe v.h.f.d.u. functions.

Page 2 Issue 4, Sep 82

ELECTRICAL AND MECHANICAL TELECOMMUNICATIONS 'ENGINEERING REGULATIONS F 584 Par t 1

Sect ion 3

Note.. . These pages 3-8 supersede pages 3-8 Issue 4 dated Sept 82

Table 1 - L i s t o f t e s t eauipment

I tem No. NSN Designat ion Remarks (1) (2) (3) (4 1

F.R.T.K. AM 352

V.H.F. D r i ve U n i t

D.C. Power Supply 0 t o 32 V 5 A AS 1412lM

Mul t imeter URY Mu1 t ime te r

Counter E lec t ron ic Frequency Racal 9918

Fluke Fluke 25

Tool K i t Telecom (Tech)

Tool K i t Tel ecom (Supp)

F i e l d r e p a i r t e s t k i t ( f . r . t . k .1 (See Tels M 720)

4. When c a r r y i n g ou t alignment, f a u l t diagnosis o r repa i r s , the equipment under t e s t (e.u.t.1 i s removed from i t s case and secured t o the t e s t j i g .

I n t e r n a l i den t i f i c a t i o n

5. Screws used t o secure the amp1 i f i e r i n t o i t s case a re enc i r c led green. There are no i n t e r n a l t e s t po in ts .

Label s

6. Replacement o f i n t e r n a l o r external labe ls , where necessary, i s c a r r i e d ou t a t F i e l d workshop l e v e l .

Repaint ing

7 . A t F i e l d workshop l e v e l , retouching o f damaged surfaces may be c a r r i e d out , b u t no t repa in t ing . The f o l l o w i n g pa in t s are t o be used:

a. Hlal8010-99-224-2079 Paint , Pr iming 1.112 1 i t r e pack.

b. Hlal8010-99-224-8663 Paint , F in ish ing, Polyurethane, Mat t F in ish , Deep Bronze Green 1.112 1 i t r e pack.

Note.. . These are two p a r t pa in t s which must be mixed i n t h e propor t ions shown on the packages. Do n o t mix more than i s necessary as i t s 'mixed 1 i f e ' i s e i g h t hours a t 20 "C and four hours a t 33 "C. Do no t apply i n low temperature o r h igh humidi t ies.

GENERAL R E P A I R INSTRUCTIONS

Dismant l ing and reassembly o f equipment

8. To remove the AM 352 from i t s case, proceed as fo l lows:

a. Undo the s i x hexagon socket capt ive screws on baseplate, and remove basepl a te .



ELECTRICAL AND MECHANICAL , ENGINEERING REGULATIONS

b. Remove two sachet desiccators.

c . D i sconnect Coaxi a1 Connectors 1PL1-2SK1 and 1PL2-2SK2 (r . f . i nput and output ) .

d. Disconnect Bat te ry Inpu t Lead 1SK2 (4) 7.

e. Set se lec tor swi tch t o l o L . Slacken two hexagon socket screws on swi tch coupl i n g and ease coupl i n g a long swi tch s h a f t away from f r o n t panel.

f. Unscrew f i v e s l o t head screws (enc i r c led green) securing chassis t o case.

g. Remove chassis f romcase.

h. Reassemble i n reverse order, ensuring t h a t swi tch and swi tch knob are se t t o ' 0 ' (sw i tch i s a t '0' when f l a t s on swi tch s h a f t a re ho r i zon ta l and Switch Wafer 2S1A i s i n p o s i t i o n shown i n Tels F 582, F i g 2007).

F i t t i n g and removal o f AM 352 on t e s t j i g

9. a. Remove AM 352 from case. pasr-

b. Place chassis on t e s t j i g , and secure w i t h th ree cap t i ve screws through heatsink.

c. Connect b a t t e r y supply lead on t e s t j i g t o (417.

d. Connect i n p u t coax ia l connector t o 2SK1.

e. Connect output coaxia l connector t o 2SK2.

f. F i t t e s t j i g swi tch knob t o swi tch shaf t and t i g h t e n l ock ing c o l l a r . Ensure t h a t swi tch i s se t t o ' 0 ' . (Para 8.h.).

g. Removal o f AM 352 from t e s t j i g i s i n reverse order t o Sub para 9.a. t o f. a

Removal and rep l acement of assembl i e s

10. The AM 352 conta ins two assemblies which a re replaceable a t F i e l d workshop l e v e l : A.G.C. (Assembly 3) and p r o t e c t i o n (Assembly 4).

11. To remove Assembly (31, unsolder connections t o assembly Pins 1, 2, 3 and 4; remove th ree securing screws and withdraw assembly. Replace i n reverse order.

12. To remove Assembly (41, unsolder connections t o assembly Pins 4, 3, 9, 1, 2, 8, 5, 10, 6 and 11. Remove connect ion t o P in 7, remove f o u r r e t a i n i n g screws and withdraw assembly. Replace i n reverse order.

Removal and rep l acement o f d i s c r e t e components

13. With the except ion o f TR2, TR3 and Switch S1, a l l components are r e a d i l y accessib le and may be removed and replaced us ing normal workshop p rac t i ce . No specia l so lder ing t o o l i s required.


ELECTRICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 584 Part 1

Section 3

14. J&. Remove hexagon nut and washer holding TR2 t o heatsink. Remove three screws securing heatsink t o chassis, and remove heatsink. Unsolder leads on TR2 pins, and withdraw TR2. On repl acement, ensure t ha t s o f t metal co i led spr ing i s i n pos i t i on around t r ans i s to r body, then reassembly i n reverse order.

15. m. Remove four securing screws on Assembly (4). Unsolder connection t o (416, t i lt Assembly (4) t o gain access, and unsolder connections t o TR3 pins. Remove securing screws, nuts and insu la t ing bushes holding TR3 and mica i nsul a t i ng gasket . Repl ace i n reverse order.

16. Switch S1. Proceed as fol lows:

a. Wafer S I C ( S I C b and S I C f ) : Unsolder connections t o S I C b. Remove two hexagonal nuts and washers holding re ta in ing p la te . Withdraw switch spindle towards rear. Unsolder connections t o S I C f. Replace i n reverse order.

b. Wafer S I B ( S I B and S I B f ) : Remove hexagonal nuts and washers holding re ta i n i ng p la te . Withdraw switch spindle towards rear. Remove wafer r e ta i n i ng screws and washers. Unsol der connections t o S1B wafer. Repl ace i n reverse order.

c. Wafer S1A (S1A f, S1A Ba and S1A Bb): Unsolder a l l connections t o S l A . Remove hexagonal nuts and washers from rear o f securing screws. Withdraw switch wafer and c l i c k p l a t e assembly forward, tak ing care not t o dislodge brass spacers. Repl ace i n reverse order.

d. S1A c l i c kp la te . As f o r sub para c.

Desiccators

17. Two Desiccators, S i l i ca-ge l , Sachet, Sty le DS2 are placed w i t h i n the AM 352, one i n the corner o f the case adjacent t o lSK l (r.f. input) , and one on the ins ide o f the case wall adjacent t o Assembly (4). The desiccators must be replaced when an equipment has been opened.

Drying and .seal i nq

18. On rece ip t of an equipment f o r repair , the fo l lowing procedure w i l l be adopted :

a. The equipment w i l l be pressurized t o 5 l b f / i n . * using dry a i r .

b. Using leak locator , car ry out a d i p t e s t i n a water tank t o check for the necessity t o replace any spindle seals o r gaskets. The addi t ion o f a wet t ing agent t o the water w i 11 ass is t i n detect ion o f leaks.

c. Open equipment i n d r i e s t possib le condit ions and car ry out obvious repa i rs and rep l acements.

d. Place opened equipment i n dehumidif ier and dry f o r a t l eas t one hour a t 50 O C w i th dry a i r from the pump u n t i l passing through the oven. (Tels M602 gives f u l l d e t a i l s o f dehumidif ier). .

e. A f t e r cooling, e l e c t r i c a l l y t e s t the equipment and car ry out any repa i rs and rea l ignment necessary.



ELECTRICAL AND MECHAHICAL ENGINEERING REGULATIONS

f. As soon as poss ib le a f t e r r e a l ignment p lace the opened euqipment i n t he oven f o r 15 min.

g. F i t new s i l i c a - g e l desiccators.

h. F i t new gaskets as requ i red a f t e r smearing w i t h grease (XG 271) and reseal euqipment i n i t s case.

j. Connect l eak l o c a t o r t o equipment and pressur ize t o 5 l b f / i n 2 us ing d ry a i r from dehumi d i f i er.

k. Repeat t h e d i p t e s t . There s h a l l be no a i r bubbles.

1 . D e t a i l s o f t ime constant t e s t i n g i s g iven under Base Repair Inspect ion Standards.

19. Toro idal rubber seals a re f i t t e d t o the equipment i n t he fo l l ow ing pos i t i ons :

a. System swi tch knob.

b. Seal i n g p lug; loca ted a t end of case adjacent t o r.f. i n p u t socket.

c. Between case and baseplate.

Mechanical r e p a i r s

20. Repairs t o accessory i tems are d e t a i l e d i n Tels F583. Mechanical r e p a i r s t o AM 352 are de ta i l e d i n Para 10.

SPECIFICATION TESTING

General

21. S p e c i f i c a t i o n t e s t i n g may be c a r r i e d ou t e i t h e r on a sealed equipment, o r on an equipment f i t t e d t o the t e s t j i g . The fo l l ow ing t e s t s d e t a i l t he procedure t o be fo l lowed f o r a sealed equipment. The t e s t i n g sequence i s sequent ia l , and should be c a r r i e d ou t i n t he order shown.

SPECIFICATION TESTS

Test 1 - Leakage cu r ren t

22. a. Connect t he equipment as shown i n F i g 1.

b. Set p.s.u. output vo l tage t o 32 i 0.2 W B.c.

c. Set FREQUENCY RANGE swi tch on e.u.t. t o '0" .

d. Measure t h e supply cur ren t .

L im i t : Not g rea ter than 1 mA.


.ELECTRICAL AND MECHANICAL ENGINEERING REGULATIONS

TELECOMMUNICATIONS F 584 Part 1

Section 3

F ig 1 - Leakage current t e s t

Test 2 - Standing d.c. l eve ls

23. a. Connect the equipment as shown i n F ig 2.

PSU

32f 0.2Vdc

b. Ensure t ha t the shor t ing l i n k i s connected between s.p.u. 'I' sockets.

FLUKE MULTMETER

SET TO - - - - (DC) mAlA

RANGE

0 c . Set FREQUENCY RANGE switch on e.u.t. t o ' 0 ' .

d. Measure voltage a t RF INPUT socket (lSK11, which sha l l be 0 V. (Note 1).

J

e. Set FREQUENCY RANGE switch on e.u. t. t o I T ' , 30-40, 40-55 and 55-76 pos i t i ons i n turn .

EUT

f. Voltage a t RF INPUT socket for each switch pos i t i on sha l l be:

L imi t : 32 + 0.2 V.

CABLE ASSY 5990-99-622-5447

Note I . . . l SK l i s the BNC socket a t the opposite end t o range switch.

Issue 5, Dec 92 D Page 7


ELECTRICAL AND MECHANICAL< ENGINEERING REGULATIONS

F ig 2 - Standing d.c. l e v e l s

PsU

32% 0.2 vdc

Test 3 - Power t r a n s f e r

t e s t

ELIT:

l SK 1 i

I

SPU

24. a. Connect equipment as shown i n F i g 3. (Note 2).

t FLUKE

MULTI -METER SET TO - -i-- (OC)

RANGE

L-

b. Set v. h. f .d.u. frequency t o 35 MHz ( i nd i ca ted on counter) and HIGHILOW swi tch t o LOW.

c. Depress LOAD EXT swi tch on v.h.f.d.u. and note vol tmeter i n d i c a t i o n as i n d i c a t i o n ' A i .

Note 2... Using SEL D I M CONTROL set URY t o dBV. (Antenna s imu la tor must be set

t o 50Q).

. I

COUNTER VHF DU ANT SIM URY MULTI-METER

FREQ MON I I P --

I IP CHANNEL A

N TYPE CABLE ASSY 5995-99-633-6309 TO BNC

URY PR3BE 24 (100V Son)

CABLE ASSY 5995-99- 622-5166

ADAPTOR ATTACHED TO THE URY PROBE

12938

Page 8

F i g 3 - S e t t i n g up procedure for Test 3

Issue 5, Dec 92

ECEGTRICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 584 Par t 1

Sect ion 3

Note.. . These Pages 9 and 10 supersede Pages 9 and 10 Issue 5 dated May 87.

d. Connect equipment as shown i n F i g 4.

e. Set supply vo l tage t o 2 0 + 0 . 2 V d.c.

f. Set e.u.t. t o 0 ( o f f ) p o s i t i o n o n range switch.

g. On v. h. f. d. u., depress LOAD EXT swi tch (and moul d l and note vol tmeter i n d i c a t i o n which s h a l l be:

L imi ts : I n d i c a t i o n 'A ' + 1 dB

COUNTER u MONITOR d - 4 CABLE ASSY 1 5995-99-622-5168 1

MULTI-ME

IIP CHAW

599 5- 99-633 -6309 NTYPE 24(100V,50n)

ADAPTOR

CONNECTED FOR TESTS 5.6.7 & 8 ONLY

F i g 4 - Test procedure

Test 4 - Low power i n p u t

25. a. Connect equipment as shown i n Fig. 4.

b. Set URY t o V range.

c. Set supply vo l tage t o 20 + 0.2 V d.c.

d. Set frequency range swi tch on e.u. t. t o 30-40.

e. On v.h.f .d.u., s e t frequency t o 30 + 0.025 MHz ( i nd i ca ted on counter), se t HIGHILOW swi tch t o LOW, ad jus t SET LEVEL and depress LOAD EXT switch.

f. URY Mul t imeter i n d i c a t i o n s h a l l be:

L im i t : Not l ess than 265 mV

Issue 6, Dec 92 (14W) ' Page 9

TELECOMMUNICATIONS F 584 Par t 1

ELECTRICAL AND MECHANICAL . ENGINEERING REGULATIONS

Sect ion 3

g. Repeat Sub para c. t o e. a t frequency s e t t i n g s g iven i n Table 2.

Table 2 - Frequency s e t t i n g s

E.U.T. V.H.F.D.U. frequency range frequency (MHz 1

Test 5 - Current d r a i n

26. a. Connect equipment as shown i n F ig 4.

b. Set supply vo l tage t o 32 + 0.2 V d.cc. ____I

c. Connect Mul t imeter t o '1' sockets s.p.u. s e t t o ma/a (use lead 5995-99-662-5447 observing c o r r e c t p o l a r i t y ) .

d. Set e.u.t. frequency range swi tch t o 30-40.

e. Set v.h.f.d.u. HIGH/LOW swi tch t o HIGH, frequency t o 30 + 0.025 MHz. Ad jus t SET LEVEL and depress LOAD EXT switch.

f. Mu1 t i m e t e r i n d i c a t i o n s h a l l be:

L im i t : Less than 2.2 A.

g. Repeat Sub paras d. t o f. a t frequency s e t t i n g s given i n Table 2.

Test 6 - Current d r a i n i n t o mismatch loads of 3 : l and 1:3 r a t i o s

27. a. Connect equipment as shown i n Fig. 4, replace Cable Assembly 5995-99-622-5168, connected between e.u. t. 1SKS5 and Antenna Simulator w i t h Cable Assembly 5990-99-620-8030.

b. Set supply vo l tage t o 3 2 + 0.2 V d.c.

c. Connect mu l t imeter t o '1' sockets on s.p.u. (as para 26c).

d. Set frequency range o f e.u. t. t o 30-40.

e. Set Antenna Simulator t o 150 Q.

f. Set v.h.f.d.u., HIGH/LOW swi tch t o HIGH, frequency t o 30 + 0.025 MHz, ad jus t SET LEVEL and depress LOAD EXT switch.

Page 10 I ssue 6, Dec 92

FLECTRICAL' AND MECHANICAL ENGINEERING RhGULATIONS

T4CECf)MMVNBCATIQNS 544 P a r t 1

Sect ion 3

Note.. . These pages 11 and 12 supersede Pages 11 and 12 Issue 4 dated Sept 82 .

g. Mu1 t ime te r i n d i c a t i o n s h a l l be:

L im i t : . Not g rea ter than 2.4 A,

h. Set Antenna Simulator t o 16.5 Q. I

j. Mu1 t i m e t e r i n d i c a t i o n s h a l l be:

L im i t : Not g rea ter than 2.4 A.

k. Remove '1' connect ion on SPU and replace w i t h sho r t i ng l i n k .

Test 7 - Low vo l tage t r i p

28. a. Connect equipment as shown i n F i g 4.

b. Set supply vo l tage t o 2 4 + 0 . 2 V d.c.

c. Set e.u.t. frequency range swi tch t o 40-55.

d. Connect mu l t imeter t o I V 8 socket on s.p.u. Set Fluke t o 7 T u s i n g lead 5995-99-622-5447 observ ing c o r r e c t po l a r i t y .

e. Set v.h.f.d.u., HIGHILOW swi tch t o LOW, frequency t o 45+0.025MHz, ad jus t SET LEVEL and depress LOAD EXT switch.

f. URY vol tmeter i n d i c a t i o n s h a l l be n o t l ess than 290 mV.

g. Reduce supply vo l tage u n t i 1 e.u. t. t r i p s , URY vo l tmeter i n d i c a t i o n 0 v. h. Supply vo l tage i n d i c a t i o n on mu1 t ime te r s h a l l be:

L im i t : Between 11 V and 16 V d.c.

Test 8 - Negative vo l tage t r i p

29. a. Connect equipment as shown i n F ig 4.

b. Set supply vo l tage t o 24 + 0.2 V d.c.

c. Set e.u. t. frequency range swi tch t o 40-55.

d. Connect mut l imeter t o I V t socket on s.p.u.

e. Set v.h.f.d.u., HIGHILOW swi tch t o LOW, frequency t o 45 + 0.025 MHz, ad jus t SET LEVEL and depress LOAD EXT switch.

f. URY Voltmeter i n d i c a t i o n s h a l l be n o t l ess than 290 mV.

g. On v.h.f.d.u. depress D.C TRIP LOW swi tch and note the URY Voltmeter i n d i c a t i o n does n o t change, e.u. t. has n o t t r ipped.

h. On v.h.f.d.u., depress D.C. TRIP HIGH swi tch and note the URY Voltmeter i nd i ca tes 0 V, e.u.t. has t r ipped.


ELECTRICAL AND M E C H A ~ I C ~ ~ TELECOMMUNICATIONS F 584 Part 1 ENGINEERING REGULATf ONS Section 3

FAULT FINDING

General

30. I n i t i a l f a u l t ind icat ions w i 11 be obtained from resu l t s o f spec i f ica t ion tests. Table 3 l i s t s the spec i f i ca t ion t es t s and probable f a u l t areas.

Table 3 - Faul t diagnosis - -

Spec i f ica t ion t e s t No. Ind ica t ion Suspect

(1) (2) (3)

1 Outside 1 i m i t s

2 No d.c. vo l t s

3 No output

Outside 1 irni t s

4 No output a t a1 1 frequencies

Correct output on one o r two bands only

Low output (but not less than 4 4W) a t a l l frequencies

5 If Test 4 sat is fac tory , but Test 5 outside 1 irni t s

6 I f Tests 4 and 5 sa t i s fac to ry but Test 6 outside 1 i r n i t s

7 Outside

8 Outside

9 Outside

10 Outside

i r n i t s

irni t s

irni t s

irni t s

(41, TR3, C54

LK1, SlCB,R4, RLA 1, 1PL1, 2SK1

1PL1, 2SK1, RLA1, C9, RLB2, 2SK2

RLA1, C9, RLA2

Check e.u.t. has not t r ipped TR3, TR2 and associated c i r c u i t r y

Band switching c i r c u i t s

TR2, (3) and associated c i r c u i t s , o r a1 i gnment

(4)

(3)

R.F. tuned c i r c u

C57, R13, C44

i t s

11 Outside 1 imi t s R.F. tuned c i r c u i t s


~'EC'TRICAL AND MECHANICAL TELECOMMUNICATIONS ENGINEERING REGULATIONS F 584 Par t 1

Sect ion 3

Note.. . These pages 13-15 supersede pages 13-15 Issue 4 dated Sept 82

ALIGNMENT

General

31. and ou t

A1 ignrnent o f t he amp l i f i e r i s c a r r i e d ou t w i t h equipment ou t of i t s case mounted on the AM 352 FRTK t e s t j i g . Alignment procedures must be c a r r i e d i n the order s p e c i f i e d and adjustments i n the order given.

S e t t i n g up

32. Layout o f e.u.t. and d i s c r e t e t e s t equipment

F i g 5 - A1 ignment s e t t i n g up procedure

a

COUNTER

Power out6ut al ignment


- URY MULTCMETER

b. Connect Mul t imeter t o ' V 1 sockets o f s.p.u.

c. Set supply vo l tage t o 20 + 0 . 2 V d.c.

VHF DU

FREQ MON *

d. Set frequency range swi tch o f e.u.t. t o 30-40.

CABLE ASSY ANT SIM 599&99-633-6309

7


R F W ,

h

PSU

I

1 SKI 1 SK2

EUT

AM 352 FRTK / TEST JIG

SPU FLUKE

MULTCMETER

TELECOMMUNICATIONS F 584 Par't 1 Sect ion 3

ELECTRICAL AND MECHANICAL *

ENGINEERING REGULATIONS

e. Set v.h.f.d.u., HIGH/LOW swi tch t o LOW, frequency t o 30 i 0.025 MHz, depress LOAD EXT swi tch and ad jus t SET LEVEL con t ro l u n t i l vo l tmeter i nd i ca tes 225 mV.

f. Adjust 2L1 on e.u.t. f o r maximum i n d i c a t i o n on vol tmeter .

g. Depress LOAD INT swi tch t o v.h.f.d.u.

h. Set frequency range swi tch o f e.u. t. t o 55-76.

j. Set v. h.f .d.u. frequency t o 76 i 0.025 MHz, depress LOAD EXT swi tch and ad jus t SET LEVEL con t ro l u n t i l vo l tmeter i nd i ca tes 225 mV.

k.

1.

m. LOAD

n.

0.

Adjust 2C37 on e.u.t. f o r maximum i n d i c a t i o n on voltmeter.

Depress LOAD INT. swi tch L.h.f.d.u.

Set v.h.f.d.u. frequency t o 66 i 0.025 MHz, ad jus t SET LEVEL, depress EXT switch.

Voltmeter i n d i c a t i o n s h a l l be:

L im i t : Not l ess than 278 mV

Depress INT swi tch on v.h.f.d.u.

Note.. . I f vol tmeter i n d i c a t i o n i s low ad jus t 2C37 fo r maximum ind i ca t i on , then repeat from Sub pdra j . However, if a peak i n d i c a t i o n cannot be obtained, remove 2 LK1 t o increase the e f fec t of 2C37. If secondary adjustment of 2C37 i s necessary, repeat procedure from Sub para d.

A.G.C. adjustment


b. Set supply vo l tage t o 32 2 0.2 V.

c. Connect mul t imeter t o '1' sockets o f s.p.u.

d. Set frequency range swi tch o f e.u.t. t o 40-55.

e. Set v. h.f.d.u., HIGHILOW swi tch t o HIGH, frequency t o 45 + 0.025 MHz, ad jus t SET LEVEL, depress LOAD EXT switch.

f. On e.u.t., ad jus t 3R8 u n t i l mu1 t ime te r i nd i ca tes 1.8 A.

g. I f unable t o ob ta in 1.8 A read jus t 3R8 a t 35 MHz.

h. On v.h.f.d.u. depress LOAD INT switch.

j. Disconnect mu1 t ime te r from '1' sockets on s.p.u. and replace sho r t i ng 1 ink .

k. On v.h.f.d.u. depress LOAD EXT switch.


ELECTRICAL AND MECHANICAL E N G I N E E R I N G REGULATIONS

TELECOMMUNICATIONS F 584 Par t 1

Sect ion 3

1 . Us ing mul t imeter , measure the vo l tage a t P in 2 o f Assembly 4 on e.u.t. w.r.t. ear th, which s h a l l be 24 + 1.7 V d.c.

m. On v.h.f.d.u. depress LOAD INT switch.

END o f Sect ion 3


- . ELECTRICAL AND MECHANICAL TET;ECOMM[TNICATIONS EETGINEZRIIFCG REGULATIONS F 584 Par t I

e ( ~ y Command of the Defence council) Section 4

I CONDITIONS OF RELEASE

1. 'Ibn information ia released by the UK Govonmcnt to the 5. Thia m f m t i o n m a y be dlwtord only withiu the Defence rrcivlent Government for Defence pumoaes only. Deplrtment of the redplenr Government. except u other&

autbotized by Wlri.tr~ of Defence (Army). 2. TMa Infomution must be accorded the nme dwne of . e n u l t Y

mtrction u that acrorded thereto by the UK Govanment. 4. TFb tnform8Uon mnr be subiect to Dnv8kt~ wned d&U.

CLANSMAN RADIO UK/PRC 351 AND UK/PRC 352

TECHNICAL HAND3OOK - FIELD #PAIRS

SECTIO?J 4 - SELECTIVE UNIT R.F. 4 WATT (S.U.R.F. 4 W)

Er ra t a

Note.. . This Page 0 is t o be f i l e d immediately i n f ron t of Page 1, Issue 3 dated J U ~ 82.

1. The following amendments must be made to the regulation.

2. Page 9, Fig 3, bottom r igh t , SURF 4 W:

Delete ea r th l i n k from I S K ~ (Bat t l e antenna).

Issue 3 , Sep 82 ( 1 4 ~ ) Page 0

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AND MECHANICAL TELECOMMUNICATIONS ENGINEERING …