Pasolink Training Manual

DIGITAL MICROWAVE RADIO SYSTEM

PASOLINK

Training Course

ROI-S04604

GENERAL

1. GENERALThis section provides information on the NEC PASOLINK 7-38 GHz 2/4/ 8/16 x 2 MB and/or 2 x 10/100Base-T(X) LAN signals transmission digital microwave radio system. Included herein are system configuration, system performance, RF channel assignment, and alarm and control.

1-1

ROI-S04604

SYSTEM CONFIGURATION

2. SYSTEM CONFIGURATIONThis system consists of TRP-[ ]G-[ ] Transmitter-Receiver (Outdoor Unit (ODU)) (see Fig. 2-1) and MDP-[ ]MB-[ ] Modulator-Demodulator (Indoor Unit (IDU)) (see Fig. 2-2 and Fig. 2-3 ). The [ ]GHz (2/4/8/16 x 2 MB) MB digital radio system is used to communicate from 2 to 16 data streams at 2.048 Mbps and/or up to 2 channels 10BASE-T/100BASE-TX LAN signals between two stations. The system block diagrams of 2/4/8/16 x 2 MB systems are shown in Fig. 2-4 and Fig. 2-5.

RX LEV MON

IFL

FG

FOR 7-38 GHz BAND ODU

Fig. 2-1 Outline of ODU

2-1


ROI-S04604

EOW IF IN/OUT

CALL

PASOLINKRESET PWRODU IDU MAINT

SC LAN

NMS LAN

FUSE (7.5A) +

TRAFFIC IN/OUT (CH1 to CH4)

ALM/AUX ALM

OW/DSC/ASC

NMS/RA

LA PORT

SELV

(a) 4 2MB Fix Rate Composition

EOW IF IN/OUT 100M PORT1 PORT2 100M SC LAN NMS LAN

CALL


FUSE (7.5A) +


ALM/AUX ALM

OW/DSC/ASC

NMS/RA

LA PORT

SELV

(b) 4 2MB Fix Rate with LAN Interface Composition

TRAFFIC IN/OUT (CH9 to CH16) IF IN/OUT

EOW

CALL


WS/SC LAN NMS LAN

FUSE (7.5A) +


ALM/AUX ALM

OW/DSC/ASC

NMS/RA

LA PORT

SELV

(c) 2/4/8/16 2MB Free Rate Composition

TRAFFIC IN/OUT (CH9 to CH16) IF IN/OUT 100M PORT1 PORT2 100M WS/SC LAN NMS LAN

EOW

CALL


FUSE (7.5A) +


ALM/AUX ALM

OW/DSC/ASC

NMS/RA

LA PORT

SELV

(d) 2/4/8/16 2MB Free Rate with LAN Interface CompositionFig. 2-2 Front View of the IDUs in 1+0 System

2-2

ROI-S04604


PASOLINKIF IN/OUT! WARNING-43V OUTPUT TURN OFF POWER BEFORE DISCONNECTING IF CABLE

FUSE (7.5A)

RESET PWR ODU IDU MAINT +

LA PORT EOW CALL RESET OPR SEL No.1

SELV

PASOLINKOPR ALM RX 1 2 TX RX TX

SC LAN

NMS LAN

TRAFFIC IN/OUT (CH1 to CH8) ALM AUX ALM OW/DSC/ASC NMS/RA LA PORT

No.2

PASOLINKIF IN/OUTARNING ! W-43V OUTPUT TURN OFF POWER BEFORE DISCONNECTING IF CABLE

FUSE (7.5A)


LA PORT

SELV

(a) 4 2MB Fix Rate CompositionPASOLINKIF IN/OUTARNING ! W-43V OUTPUT TURN OFF POWER BEFORE DISCONNECTING IF CABLE

FUSE (7.5A)


LA PORT 100M 100M EOW CALL RESET OPR SEL No.1

SELV


PORT1 PORT2

SC LAN

NMS LAN


No.2


FUSE (7.5A)


(b) 4 2MB Fix Rate with LAN Interface CompositionPASOLINKIF IN/OUTARNING ! W-43V OUTPUT TURN OFF POWER BEFORE DISCONNECTING IF CABLE

LA PORT

SELV

FUSE (7.5A)


LA PORT TRAFFIC IN/OUT (CH9 to CH16) EOW CALL RESET OPR SEL No.1

SELV


SC LAN

NMS LAN


No.2

PASOLINKIF IN/OUTARNING ! W-43V OUTPUT TURN OFF POWER BEFORE DISCONNECTING IF CABLE

FUSE (7.5A)


LA PORT

SELV

(c) 2/4/8/16 2MB Free Rate CompositionPASOLINKIF IN/OUTARNING ! W-43V OUTPUT TURN OFF POWER BEFORE DISCONNECTING IF CABLE

FUSE (7.5A)


LA PORT TRAFFIC IN/OUT (CH9 to CH16) 100M 100M EOW CALL RESET OPR SEL No.1

SELV


PORT1 PORT2

SC LAN

NMS LAN


No.2


FUSE (7.5A)


LA PORT

SELV

(d) 2/4/8/16 2MB Free Rate with LAN Interface CompositionFig. 2-3 Front View of the IDUs in 1+1 System

2-3

ROI-S04604

SYSTEM PERFORMANCE

3. SYSTEM PERFORMANCEThe system performance is listed in Table 3-1.Table 3-1 Performance CharacteristicsITEM Frequency Range [ GHz] Frequency Plan ITU-R Channel Separation RF TX/RX Spacing [MHz] 154 161 7 GHz 7.1257.725 F.385-6 8 GHz 7.9008.500 F.386-6 Annex 4 13 GHz 12.7513.25 F.497-6 15 GHz 14.515.35 F.636-3 18 GHz 17.719.7 F.595-7 23 GHz 21.223.6 F.637-3 26 GHz 24.526.5 F.748-4 38 GHz 37.039.5 F.749-2 GUARANTEED

3.5 MHz (4MB) / 7 MHz (8 MB) / 14 MHz (17 MB; 13.75 MHz also for 18 GHz) / 28 MHz (34 MB; 27.5 MHz also for 18 GHz) 126 266 266 315 420 490 728 +23 340 1008 1010 1560 +23 1008 1200 1232 1008 1260

Output Power at Antenna Port [dBm] Threshold Level (dBm measured at antenna port) BER=10-3 4 MB 8 MB 17 MB 34 MB

+27

+25

+23

+20

+15

1.5 dB (ATT=0)

-93.5 -90.5 -87.5 -84.5

-93.5 -90.5 -87.5 -84.5

-93.5 -90.5 -87.5 -84.5

-92.5 -89.5 -86.5 -83.5

-91.5 -88.5 -85.5 -82.5

-91.0 -88.0 -85.0 -82.0

-90.5 -87.5 -84.5 -81.5

+2.5 dB +2.5 dB +2.5 dB +2.5 dB

BER=10-6 4 MB 8 MB 17 MB 34 MB System gain (dBm measured at ant. port) BER=10-3 4 MB 8 MB 17 MB 34 MB

-90.0 -87.0 -84.0 -81.0

-90.0 -87.0 -84.0 -81.0

-90.0 -87.0 -84.0 -81.0

-89.0 -86.0 -83.0 -80.0

-88.0 -85.0 -82.0 -79.0

-87.5 -84.5 -81.5 -78.5

-87.0 -84.0 -81.0 -78.0

+2.5 dB +2.5 dB +2.5 dB +2.5 dB

120.5 117.5 114.5 111.5

118.5 115.5 112.5 109.5

116.5 113.5 110.5 107.5

115.5 112.5 109.5 106.5

114.5 111.5 108.5 105.5

111.0 108.0 105.0 102.0

105.5 102.5 99.5 96.5

-4.0 dB -4.0 dB -4.0 dB -4.0 dB

BER=10-6 4 MB 8 MB 17 MB 34 MB

117.0 114.0 111.0 108.0

115.0 112.0 109.0 106.0

113.0 110.0 107.0 104.0

112.0 109.0 106.0 103.0

111.0 108.0 105.0 102.0

107.5 104.5 101.5 98.5

102.0 99.0 96.0 93.0

-4.0 dB -4.0 dB -4.0 dB -4.0 dB

3-1

SYSTEM PERFORMANCE

ROI-S04604

Table 3-1 Performance Characteristics (Contd)ITEM Frequency Agility (MHz without changing filters) Data signal interface Bit rate: Level: Code format: Impedance: Electro magnetic compatibility (EMC) ODU/IDU: Power requirement*: Power consumption 4 MB system: 8 MB system: 17 MB system: 34 MB system: Approx. 50 watts (without optional module) Approx. 60 watts (equipped with optional module) Approx. 50 watts (without optional module) Approx. 60 watts (equipped with optional module) Approx. 52 watts (without optional module) Approx. 62 watts (equipped with optional module) Approx. 55 watts (without optional module) Approx. 66 watts (equipped with optional module) ETS300385 Class B +20 to +60 / -20 to -60 V DC 2.048 Mbps 50 ppm (2 2 MB/4 2 MB/8 2 MB/16 2 MB system) Meets specification of ITU-T G.703 High density bipolar-3 (HDB-3) 75 ohms, unbalanced 120 ohms, balanced 7 GHz 63 8 GHz 42 13 GHz 56 15 GHz 56-100 18 GHz 252 23 GHz 26 GHz 280 38 GHz GUARANTEED

Note: * The range of DC power input depends on system requirement.

3-2 2 pages

GENERAL

ROI-S02775

1.2 Equipment PerformanceThe performance characteristics of the IDU are listed in Table 1-1.Table 1-1 Performance Characteristics of IDU

Data signal interface (between IDU and DTE) Bit rate: 2.048 Mbps 50 ppm (2 MBx 2/2 MB x 4/2 MB x 8/2 MB x 16 system) 8.448 Mbps 30 ppm (8 MBx 1 system) 34.368 Mbps 20 ppm (34 MBx 1 system) Meets specifications of ITU-T G.703 High density bipolar-3 (HDB-3) 75 ohms, unbalanced or 120 ohms, balanced 4-phase shift keying (4 PSK) system Quasi-coherent detection

Level: Code format: Impedance: Modulation method: Demodulation method: IF signal interface (between IDU and ODU) Signal frequency TX: RX: Signal level IF output: IF input: Impedance: Insertion loss: Orderwire frequency Output: Input: Power supply: Control/Monitor signal frequency:

850 MHz 70 MHz

5 dBm, nominal 15 to 0 dBm (at , RX IN), varies with cable length (maximum cable length (8D-FB): l=300 m) 50 ohms, unbalanced 15 dB at 70 MHz (l=300 m) 45 dB at 850 MHz (l=300 m)

468 kHz, amplitude modulation (AM) 450 kHz, AM 43 V DC (through) at IF IN/OUT 10 MHz, amplitude shift keying (ASK) (at IF IN/OUT)

1-6

ROI-S02775

GENERAL

Table 1-1 Performance Characteristics of IDU (Contd)

Analog service channel (ASC) signal interface Frequency: Impedance: 0.3 to 3.4 kHz 600 ohms

Digital service channel (DSC) signal interface Bit rate: Level: Wayside (WS) signal interface Bit rate: Level: Dimensions 2 MBx 2/2 MB x 4/2 MB x 8/ 2 MB x 16 (for 120 ohms interface)/ 8 MB x 1/34 MB x 1 fixed bit rate system/2 MB x 2/4/8 bit rate free system/2 MB x 2/4/8/16 bit rate free system for 120 ohms interface: 2 x 16 fixed bit rate (for 75 ohms nterface) system/2 MB x 2/4/8/ 16 bit rate free system for 75 ohms interface: Weight 2 MBx 2/2 4/2 8/ 2 x 16 (for 120 ohms interface)/ 8 x 1/34 x 1 system: 2 x 16 (for 75 ohms interface) system: Environmental temperature range Operation: Storage: 0C to +50C 30C to +70C 2.048 Mbps Meet specifications of ITU-T G.703 64 kbps (G703/V.11) 9.6 kbps (asynchronous) RS-232, RS-422 or RS-485 (9.6k) Meet specifications of ITU-T G.703/V.11 (64k)

482 wide 44 high 240 deep (mm)

482 wide 66 high 240 deep (mm)

Approx. 4 kg (including all options)

Approx. 5 kg (including all options)

1-7

ROI-S04605

GENERAL

1.2 Equipment PerformanceThe performance characteristics of the ODU are listed in Table 1-2 and radio frequency assignment is provided in para. 5.1.Table 1-2 Performance CharacteristicsITEM Frequency Range [ GHz] Frequency Plan ITUR Channel Separation 7 GHz 7.1257.725 F.385-6 8 GHz 7.9008.500 F.386-6 Annex4 13 GHz 12.7513.25 F.497-6 15 GHz 14.515.35 F.636-3 18 GHz 17.719.7 F.595-7 23 GHz 21.223.6 F.637-3 26 GHz 24.526.5 F.748-4 38 GHz 37.039.5 F.749-2GUARANTEED

3.5 MHz (4 MB) / 7 MHz (8 MB) / 14 MHz (17 MB; 13.75 MHz also for 18 GHz) / 28 MHz (34 MB; 27.5 MHz also for 18 GHz) 154 161 126 266 266 315 420 490 728 +23 340 1008 1010 1560 +23 1008 1200 1232 1008 1260

RF TX/RX Spacing [MHz]

Output Power at Antenna Port (dBm) Power Control Frequency Stability Receiver Noise Figure Maximum Input Level IF signal interface (between IDU and ODU) Signal frequency TX: RX: Signal level Input: 4.5 dB

+27

+25

+23

+20

+15

1.5 dB (ATT=0)

0 to 30 dB, in 1 dB steps, variable 5 ppm 4.5 dB 4.5 dB 4.5 dB 5.5 dB 6.5 dB 7.0 dB 7.5 dB

1.0 dB 10 ppm +1.5 dB

-15 dBm (No ERROR)

850 MHz 70 MHz

-52 to -3 dBm for 7-38 GHz, varies with cable length (maximum cable length: L=300 m/8D-FB) 0 dBm, nominal

Output: Orderwire frequency Output: Input: DC component

468 kHz, AM 450 kHz, AM -43 V DC

1-3

GENERAL

ROI-S04605

Table 1-2 Performance Characteristics (Contd)ITEM Control/Monitor signal frequency Impedance Type of RF IN/OUT Portion *1 Dimensions: Weight: Environmental temperature range Operation Storage -33C to +50C -40C to +70C Approx. 4.5 kg N-Female 7 GHz 8 GHz 13 GHz 15 GHz 18 GHz 23 GHz 26 GHz 38 GHzGUARANTEED

10 MHz, ASK (at IF IN/OUT)

50 ohms, unbalanced PBR - 140 PBR - 220 PBR -260 PBR - 320

236 wide 236 high 113 deep (mm) Approx. 4 kg

Notes: *1 For direct mounting type ODU, the RF IN/OUT port used is NEC special flange, not PBR flange.

1-4 4 pages

ROI-S04604

RADIO FREQUENCY ASSIGNMENT

4. RADIO FREQUENCY ASSIGNMENTRadio frequencies for Pasolink [ ] GHz 4/8/17/34 MB digital radio system are as follows: 7 GHz band: 8 GHz band: 7.125 to 7.725 GHz 7.900 to 8.500 GHz

13 GHz band: 12.75 to 13.25 GHz 15 GHz band: 14.5 to 15.35 GHz 18 GHz band: 17.7 to 19.7 GHz 23 GHz band: 21.2 to 23.6 GHz 26 GHz band: 24.5 to 26.5 GHz 38 GHz band: 37.0 to 39.5 GHz For details, refer to Appendix "Frequency Allocation Table" in TRP equipment (ODU) description (Section II).

4-1

ALARM AND CONTROLThe simplified alarm and control functions are described in accordance with the alarm indication and reporting, and network management. Alarm Indication and Reporting Alarm indication and reporting function are provided with the IDU. Alarm signals initiated by detection circuits on the ODU are sent to the IDU. Therefore the alarm indicator for the ODU is located on the front panel of the IDU. The alarm indication for the IDU is also indicated by the corresponding alarm indicator on the IDU. When the equipment is operating normally, the alarm indicators on the IDU stay unlit. When an abnormal condition occurs, the related alarm indicator is lit and a remote alarm report is made

2-28 28 pages

FUNCTIONAL OPERATION

Table 2-3 Alarm Indication and ReportingDETECTING CIRCUIT ALARM CONDITION AIS signal is sent AIS (all logic 1) is received Input data stream is lost Transmitter clock is lost Receiver clock is lost Output data stream is lost Setting error of traffic channel assignment for usage TX 1/2 CLK is lost RX1/2 CLK is lost FE link down, selectable Wayside input data stream is lost Wayside AIS is received Wayside output data stream is lost Wayside AIS is transmitted Wayside channel usage error, selectable Output data stream or master clock signal is lost at the DPU (TX) circuit VCO synchronization is lost at the MOD circuit Carrier synchronization is lost IF input signal is lost Frame synchronization is lost at the DPU (RX) BER is worse than preset value (1 x 103) DPU BER is worse than preset value (1 x 106) BER is worse than preset value (1 x 103, 1 x 104, 1 x 105 or 1 x 106, selectable) CPU communication error between IDU and ODU Transmitter RF power decreases 3 dB from normal Receiver input level decreases from squelch level at ODU ODU APC loop of local oscillator for transmitter or first local oscillator for receiver unlocks at ODU APC loop of second local oscillator for receiver unlocks at ODU IF signal from the IDU is lost at ODU When the equipment is set to the Maintenance condition by PC. When the equipment is set to the following condition by PC. FE loopback control condition NE loopback control condition MOD CW condition MUTE (TX output power) condition BER ALM >> AIS (off) OPR SEL No.1-No.2 switch is set to No.1 or No.2 position. ALARM INITIATED AIS SEND AIS RCVD INPUT LOSS TX CLK LOSS RX CLK LOSS OUTPUT LOSS CHANNEL USAGE ERROR TX IN CLK LOSS1/2 RX IN CLK LOSS1/2 FE LINK DOWN WS INPUT LOSS WS AIS RCVD WS OUTPUT LOSS WS AIS SEND WS CHANNEL USAGE TX DPU ALM MOD ALM DEM ALM DEM ALM F SYNC ALM HIGH BER ALM LOW BER ALM BER ALM OPR ALM TX PWR ALM RX LEV ALM APC 1 ALM APC 2 ALM IF INPUT ALM MAINT ALM LED INDICATION ON IDU TX ALM ( ) TX ALM ( ) RX ALM ( ) RX ALM ( ) TX ALM ( ) TX ALM 1/2 RX ALM1/2 LINK TX ALM ( ) TX ALM ( ) RX ALM ( ) RX ALM ( ) TX ALM ( ) TX ALM ( ) TX ALM ( ) RX ALM ( ) RX ALM ( ) RX ALM ( ) RX ALM ( ) RX ALM ( ) RX ALM ( ) TX ALM ( ) RX ALM ( ) TX ALM ( ) RX ALM ( ) TX ALM ( ) RX ALM ( ) TX ALM ( ) RX ALM ( ) TX ALM ( ) MAINT IDU*2 REMOTE ALARM REPORT *1 TX ALM ( ) TX ALM ( ) RX ALM ( ) RX ALM ( ) TX ALM ( ) TX ALM 1/2 RX ALM 1/2 LAN INTFC ALM TX ALM ( ) TX ALM ( ) RX ALM ( ) RX ALM ( ) TX ALM ( ) TX ALM ( ) RX ALM ( ) RX ALM ( ) RX ALM ( ) RX ALM, ( ) BER ALM RX ALM ( ), BER ALM RX ALM ( ), BER ALM TX ALM( ) RX ALM ( ) TX ALM ( ) RX ALM ( ) TX ALM ( ) RX ALM ( ) TX ALM ( ) RX ALM ( ) TX ALM ( ) MAINT ALM

INTFC

IDU

SW BOARD LAN INTFC

WS INTFC

IDU*3

WS INTFC DPU MOD DEM

IDU

ODU

MAINT ( )

ROI-S04488

SW BOARD

MAINT ALM

MAINT ( )

MAINT ALM

IDU Description and Operation and Operation ODU Description Operation Idu Description and1- General The IDU has the following two types for each 1+0 and 1+1 systems. Fixed bit rate type (for 4 2MB and optional 2 10/100 BASET(X)) Free bit rate type (for 2/4/8/16 2MB and optional 2 10/100 BASE-T(X)) 2- Equipment Composition A- 1+0 IDU

B- 1+1 IDU

3. FUNCTIONAL OPERATIONThis section describes functional operation of the transmit line equalization, transmit digital processing, modulation, demodulation, receive digital processing, receive line equalization, analog service channel signal transmission, 9.6k digital service channel transmission, alarm signal transmission, wayside signal transmission, 64k digital service channel transmission, LAN signal transmission, and alarm and control in that order for the IDU. The IDU provides four signal transmission systems; 2 x 2 MB, 4 x 2 MB, 8 x 2 MB and 16 x 2 MB in 1+0 and 1+1 configuration as shown in Fig 21 and Fig 2-2 Functional Block Diagram.

ROI-S04488


INPUT LOSS 1-2 AIS RCVD 1-2 FE LB CTRL 1-4 CH1 IN TRANS PLS MON AIS DET LOOPBACK CKT LOOPBACK CKT AIS CTRL MEM

INTFC (CH1 - CH4)

FE LB ANS 1-4

a

CH2 IN 2 x 2 MB SYSTEM CH1 OUT

TRANS

B-U CONV U-B CONV

MEM P-S CONV MEM MUX

b

TRANS

CH2 OUT

TRANS OUTPUT LOSS 1-2 PLS MON

AIS CTRL

MEM TX CLK LOSS CLK MON TX FPLS TX CLK TIM GEN w x z i

4 x 2 MB SYSTEM

INPUT LOSS 3-4 AIS RCVD 3-4 PLS MON AIS DET LOOPBACK CKT LOOPBACK CKT AIS CTRL

CH3 IN

TRANS

MEM

CH4 IN

TRANS

B-U CONV U-B CONV

MEM S-P CONV MEM DEMUX RX CLK RX FPLS

j

CH3 OUT

TRANS

u v

CH4 OUT

TRANS PLS MON

AIS CTRL

MEM CLK MON RX CLK LOSS AIS CTRL F SYNC ALM

y s t From/To FIG. 2-1 (2/3)

1/8 OUTPUT LOSS 1-2 OUTPUT LOSS 3-4 AIS RCVD 1-2 INPUT LOSS 1-2 AIS RCVD 3-4 INPUT LOSS 3-4 FE LB CTRL 1-4 FE LB ANS 1-4 NE LB ANS 1-4 FE LB CTRL 1-4 NE LB CTRL 1-4

16M CLK

P-S CONV

SERIAL ALM

q

8 x 2 MB SYSTEM

S-P CONV

SERIAL DATA

r

CH5 IN CH6 IN CH5 OUT CH6 OUT CH7 IN CH8 IN CH7 OUT CH8 OUT CH9 IN CH10 IN CH9 OUT CH10 OUT CH11 IN CH12 IN CH11 OUT CH12 OUT 16 x 2 MB SYSTEM CH13 IN CH14 IN CH13 OUT CH14 OUT CH15 IN CH16 IN CH15 OUT CH16 OUT

(CH5 - CH8)

c d k l

(SAME AS ABOVE)

(CH9 - CH12)

e f m n

(SAME AS ABOVE) (CH13 - CH16) g h o p

Fig. 2-1 Functional Block Diagram of IDU (1/3)

2-3/4

ROI-S04488


DPU a b c d e f g h PLS MON TIM GEN PLS MON VCO DEM EOW DEM 43 V DC VCO 450 kHz CPU CLK INTERFACE EOW MOD MOD P-S CONV MUX PARITY CHECK SCRB DIF ENC DIG FIL D-A CONV D-A CONV 4PH MOD MOD IF IN/OUT DATA UP DATA DOWN

A B

w x z

TX FPLS TX CLK

PCM CODEC EOW H EOW OUT EOW IN

MST CLK MON

C D E

TERMINALWS

WS/SC LAN INTFC* B-U CONV U-B CONV MUX ALM 1-4

TX DPU ALM MOD ALM

IN/OUT(RJ45) From/To FIG. 2-1 (1/3) q SERIAL ALM

L BER ALM H BER ALM s y F SYNC ALM AIS CTRL F SYNC ALM BER ALM P-S CONV F

From/To FIG. 2-1 (3/3)

MOD CW AIS CTRL OFF r SERIAL DATA BER THRESHOLD FRAME ID LAN INTFC* 10BASE-T/ 100BASE-TX PORT1 PORT2 Ethernet SW SPEED CONV F SYNC ALM H S-P CONV G

v t u

RX FPLS 16M CLK RX CLK i j k l m n o p OW/DSC/ASC IN OUT BER DET TIM GEN DEMUX DSCRB DIF DEC A-D CONV A-D CONV 4 PH DEM BER ALM I

DEM

S-P CONV

F SYNC

Note: * Optional.

ASC/DSC/ALM INTFC A-D CONV/LEV CONV

70 MHz

DSC/64K/ ASC/EOW

IN OUT

B-U CONV U-B CONV 64K/SC LAN INTFC*

INTERFACE TERMINAL

Fig. 2-1 Functional Block Diagram of IDU (2/3)

2-5/6

ROI-S04488


TX PWR ALM RX LEV ALM APC 1 ALM APC 2 ALM IF INPUT ALM ODU

S-P CONV

INPUT LOSS 1-16S-P CONV

TX CLK LOSS RX CLK LOSS OUTPUT LOSS 1-16 DEM ALM H BER ALM IDU

TX DPU ALM D BER ALM I F SYNC ALM H MOD ALM E INTERFACE TERMINAL

NO DPU SERIAL From/To FIG. 2-1 (2/3) F DPU SERIAL G S-P CONV FE LB CTRL 1-16 MOD CW NE LB CTRL 1-16 AIS CTRL 1-16 DATA UP A DATA DOWN B CPU CPU ALM CPU RESET CPU CLK NO INTERFACE TERMINAL PM CARD* RL1 COM NC TX ALM MAINT RL4 COM NC MAINT

C

INTERFACE TERMINAL LA PORT

CPU NMS/RA

PHOTOCOUPLERs

HOUSEKEEPING INPUT NO RL2 HOUSEKEEPING OUTPUT COM NC RX ALM

RELAYs

NO RL3 COM NC BER ALM

Notes: 1. *Optional. 2. Four relay contacts are outputed from interface terminal (ALM/ALM AUX). Plural alarms can be applied to a single relay. The figure shows the default settings. Refer to paragraph 3.4 for changing the settings. 3. Refer to the table 3.1 Interface Terminals and Jacks for the details of pin assignment for the alarm signals.Fig. 2-1 Functional Block Diagram of IDU in 1+0 System (3/3)

2-7/8

ROI-S04488


INPUT LOSS 1-2 AIS RCVD 1-2 FE LB CTRL 1-4 CH1 IN PLS MON AIS DET LOOPBACK CKT LOOPBACK CKT AIS CTRL MEM

INTFC SECTION (CH1 - CH4)

FE LB ANS 1-4

a

2 2 MB SYSTEM

CH2 IN

B-U CONV U-B CONV

MEM P-S CONV MEM MUX

b

CH1 OUT

CH2 OUT OUTPUT LOSS 1-2 4 2 MB SYSTEM PLS MON

AIS CTRL

MEM TX CLK LOSS CLK MON TX FPLS TX CLK w x

INPUT LOSS 3-4 AIS RCVD 3-4 PLS MON AIS DET LOOPBACK CKT LOOPBACK CKT AIS CTRL

CH3 IN

MEM

i

CH4 IN

B-U CONV U-B CONV

MEM S-P CONV MEM DEMUX RX CLK RX FPLS

j

CH3 OUT

u v

CH4 OUT PLS MON

AIS CTRL

MEM CLK MON RX CLK LOSS AIS CTRL F SYNC ALM

y s t FROM/TO FIG. 2-2 (2/4)

1/8 OUTPUT LOSS 1-2 OUTPUT LOSS 3-4 AIS RCVD 1-2 INPUT LOSS 1-2 AIS RCVD 3-4 INPUT LOSS 3-4 FE LB CTRL 1-4 FE LB ANS 1-4 NE LB ANS 1-4 FE LB CTRL 1-4 NE LB CTRL 1-4

12M CLK

P-S CONV

SERIAL ALM

q

8 2 MB SYSTEM

S-P CONV

SERIAL DATA

r

CH5 IN CH6 IN CH5 OUT CH6 OUT CH7 IN CH8 IN CH7 OUT CH8 OUT CH9 IN CH10 IN CH9 OUT CH10 OUT CH11 IN CH12 IN CH11 OUT CH12 OUT CH13 IN CH14 IN CH13 OUT CH14 OUT CH15 IN CH16 IN CH15 OUT CH16 OUT

INTFC SECTION (CH5 - CH8)(SAME AS ABOVE)

c d k l


e f m n

16 2 MB SYSTEM


g h o p

Fig. 2-2 Functional Block Diagram of IDU in 1+1 System (1/4)

2-9/10

ROI-S04488


From/To FIG. 2-2 (4/4) TX CLK LOSS2 1

SW UNIT No. 1 MD UNIT DPU MDPP-S CONV MUX PARITY CHECK PLS MON TX FPLS TX CLK PLS MON TIM GEN PCM CODEC MST CLK MON SCRB DIF ENC DIG FIL D-A CONV D-A CONV 850 MHz VCO 4 PH MOD MOD DEM EOW DEM 43 V DC EOW MOD 450 kHz

a b c d e From/To FIG. 2-2 (1/4) f g h w

H

MPXIF IN/OUT DATA UP A DATA DOWN B

H

H

H

H

H

CLK MON

H

H MUX ALM 1-4 SERIAL ALM L BER ALM H BER ALM F SYNC ALM BER ALM MOD CW AIS CTRL OFF H

CPU CLK C TX DPU ALM D MOD ALM E g From/To FIG. 2-2 (1/4) s ySERIAL ALM

RX SW

x

P-S CONV

SYS ALM

From/To FIG. 2-2 (3/4) F

F SYNC ALM AIS CTRL

EOW IN/OUT LAN INTFC * 10 BASE-T 100 BASE-TX PORT1 PORT2ETHERNET SW SPEED CONV SW H

BER THRESHOLD RX SW FRAME ID

S-P CONV

SYS CTRL

G

DEM ALM F SYNC ALM BER ALMBER DET TIM GEN DEMUX DSCRB DIF DEC A-D CONV 70 MHz F SYNC A-D CONV 4 PH DEM

H I J

RX FPLS 12M CLK RX CLK

i j k l m From/To FIG. 2-2 (1/4) n o pRX SW/ HL SW S-P CONV

DEM

No. 2 MD UNITv t u WS/SC LAN WS/SC LAN INTFC * IN OUT (RJ45)B-U CONV/DPU U-B CONV/DPU SW H CLK MON

IF IN/OUT DATA UP DATA DOWN CPU CLK TX DPU ALM MOD ALM SYS ALM SYS CTRL

K L M N O P Q From/To FIG. 2-2 (3/4)

DEM ALM F SYNC ALM BER ALMH

R S T

OW/DSC/ASC ASC/DSC/ALM INTFC * IN A-D CONV/ DSC/64K/ ASC/EOW OUT IN OUTLEV CONV

(SAME AS ABOVE)H

64K/SC LAN INTFC *B-U CONV/DPU U-B CONV/DPU

RX SW

From FIG. 2-2 (4/4)

6

RX SW CONT

To RX SW

4

3

RX CLK LOSS From/To FIG. 2-2 (4/4)

Note: * Optional.Fig. 2-2 Functional Block Diagram of IDU in 1+1 System (2/4)

2-11/12

ROI-S04488



5

TX SW CTRL FE LB CTRL R 1-4 FE LB ANS R 1-4 INPUT LOSS 1-4 AIS RCVD 1-4 NE LB ANS 1-4 TX IN CLK LOSS RX IN CLK LOSS OUTPUT LOSS 1-4 AIS SEND 1-4 DEM ALM L BER ALM H BER ALM

ALM CTRL (No. 1 CH)TX PWR ALM ODU SERIAL RX LEV ALM S-P CONV APC 1 ALM APC 2 ALM IF INPUT ALM ODU

F

INTFC SERIAL

S/P

P/S CONV

DPU SERIAL

From/To FIG. 2-2 (2/4) BER ALM F SYNC ALM

INPUT LOSS 1-16 AIS RCVD 1-4 TX IN CLK LOSS DPU SERIAL S-P CONV RX IN CLK LOSS OUTPUT LOSS 1-16 DEM ALM L BER ALM CPU CPU ALM H BER ALM

J I a TX 1 ALM A B C D From/To FIG. 2-2 (2/4) H E G b RX 1 ALM

DATA UP DATA DOWN CPU CLK TX DPU ALM

IDU

DEM ALM MOD ALM DPU SERIAL S-P CONV FE LB CTRL SERIAL DATA P/S CONV NE LB CTRL S/P CONV RESET P/S CONV FE LB CTRL 1-16 MOD CW NE LB CTRL 1-16 AIS CTRL 1-16

MAINT

To FIG. 2-2 (1/4)

r

To FIG. 2-2 (4/4)

c

MAIN BOARD 1 SERIALINTERFACE TERMINAL

LA PORTPHOTOCOUPLERs HOUSEKEEPING INPUT

NMS/RA CPU From FIG. 2-2 (4/4) 5 P T S K L M N R O Q r TX SW CTRLRELAYs

From/To FIG. 2-2 (2/4) d TX 2 ALM

INTFC SERIAL BER ALM F SYNC ALM DATA UP DATA DOWN CPU CLK TX DPU ALM DEM ALM MOD ALM DPU SERIAL SERIAL DATA MAIN BOARD 2 SERIAL

HOUSEKEEPING OUTPUT

PM CARD* ALM CTRL (No. 2 CH) (SAME AS ABOVE)

ODU

From/To FIG. 2-2 (2/4) RX 2 ALM From/To FIG. 2-2 (1/4) f

IDU

e

MAINT


2-13/14

ROI-S04488



1

TX CLK LOSS 1 MOD 1 ALM TX DPU 1 ALM TX PWR 1 ALM APC 11 ALM APC 12 ALM IF INPUT 1 ALM OPR 1 ALM TX SW CTRL LOGIC MOD 2 ALM TX DPU 2 ALM TX PWR 2 ALM APC 21 ALM APC 22 ALM IF INPUT 2 ALM OPR 2 ALM OPR SEL No. 1 I AUTO I No. 2

ALM CTRL (COMMON)

a

TX 1 ALM

S/P

TX ALM 1

To FIG. 2-2 (3/4) From FIG. 2-2 (2/4)

5 2

TX SW CTRL TX CLK LOSS 2

TX OPR 1

TX OPR 2

d

TX 2 ALM S/P

TX ALM 2 OPR REL No. 1 No. 2 AUX ALM TERMINAL RX ALM 1 RX SW CTRL LOGIC

From FIG. 2-2 (2/4)

3

RX CLK LOSS 1 APC 11 ALM APC 12 ALM RX LEV 1 ALM OPR 1 ALM F ASYNC 1 ALM DEM 1 ALM BER 1 ALM

REMOTE CTRL IN

b

RX 1 ALM

S/P


6 4

RX SW CTRL RX CLK LOSS 2 APC 21 ALM APC 22 ALM RX LEV 2 ALM OPR 2 ALM F ASYNC 2 ALM DEM 2 ALM BER 2 ALM

RX OPR 1

RX OPR 2

e From/To FIG. 2-2 (3/4)

RX 2 ALM

S/P

RX ALM 2

TX PWR 1 ALM APC 11 ALM APC 12 ALM IF INPUT 1 ALM INPUT LOSS 1-4 MUX ALM 1 c MAIN BOARD 1 SERIAL S/P RX LEV 1 ALM OUTPUT LOSS 1-4 H BER 1 ALM FE LB CTRL 1-4 MOD 1 CW NE LB CTRL 1-4 AIS CTRL S 1-4 TX PWR 2 ALM APC 21 ALM APC 22 ALM IF INPUT 1 ALM INPUT LOSS 1-4 MUX ALM 2 f MAIN BOARD 2 SERIAL S/P RX LEV 1 ALM OUTPUT LOSS 1-4 H BER 1 ALM

ALM TERMINAL NO COM NC NO COM NC NO COM NC NO COM NC

RL 1 RL 2

TX ALM 1

TX ALM 2

RL 3 RL 4

RX ALM 1

RX ALM 2

RL 5 RL 6

NO COM NC NO COM NC No.2 COM No.1 No.2 COM No.1

BER ALM

MAINT ALM

RL 7

TX SW OPR

Notes : 1.

Eight relay contacts are outputed from interface terminal (ALM TERMINAL). Plural alarms can be applied to a single relay. The figure shows the default settings. Refer to paragraph 3.4 for changing the settings.

FE LB CTRL 1-4 MOD 1 CW NE LB CTRL 1-4 AIS CTRL S 1-4

RL 8 MAINT

RX SW OPR

2. Refer to the table 3.2 for Interface Terminals and Jacks for the details of pin assignment for the alarm signals.


2-15/16

ROI-S04488


2.1

Transmit Line EqualizationThis section describes the bipolar-to-unipolar multiplexing and parallel-to-serial conversion. code conversion,

2.1.1

Bipolar-to-Unipolar Code ConversionThe signals applied to the TRAFFIC IN terminal are (*) 2.048 Mbps data streams in a bipolar pulse format of the high density bipolar-3 (HDB-3) code. Each bipolar-coded data stream is converted into an NRZ unipolar data stream. Note: *2 MB 2 system: two 2 MB 4 system: four 2 MB 8 system: eight 2 MB 16 system: sixteen

2.1.2

MultiplexingTo obtain time slots for multiplexing, the 2.048 Mbps N data streams are written in to a buffer memory and read out with radio section clock having a time gap. The data streams having a time gap are sent to a multiplexer (MUX) circuit, here, alarm information, AIS RCVD, loopback control/ answer, alarm/control signals and stuff information bits, etc. are inserted into the location of the time gap.

2.1.3

Parallel-to-Serial ConversionThe signal streams which are formatted in radio frame, are fed to the DPU circuit.

2.2

Transmit Digital ProcessingThis section describes the multiplexing, scrambling and parity check.

2.2.1

MultiplexingThe data streams having a time gap are sent to the MUX in which frame pattern, multiframe pattern, analog service channel (ASC), digital service channel (DSC), WS, LAN data signals and parity check bits are inserted into the respective locations of the time gap. The multiplexed data streams are fed to the SCRB circuit.

2-17


ROI-S04488

2.2.2

ScramblingTo smooth the RF spectrum and to restore the clock at the receiving end, the multiplexed data streams are scrambled with the 12th (for 4 x 2 MB) or 14th (for 2 x 2 MB, 8 x 2 MB and 16 x 2 MB,) pseudo random pattern generated by the timing generator (TIM GEN) so that the transmission mark ratio is 1/2. Then the scrambled data stream is sent to the differential encoder (DIFF ENCOD).

2.2.3

Parity CheckFor detecting the bit error at the receiving end, the parity check bits are calculated and multiplexed into the radio frame signal streams.

2.3

ModulationThis section describes the differential encoding, 4-phase shift keying modulation and orderwire signal modulation.

2.3.1

Differential EncodingIn the 4-phase shift keying modulation system, the demodulator phase may not coincide with the modulation signal of the opposite transmitting end which give raise to phase ambiguity. To avoid this, an absolute reference phase is needed between the transmitting and receiving ends. As shown in Table 2-1, the two independent data streams fed from the SCRB circuit are represented as an arrangement of Gray-coded binary digits. The two-bit Gray-coded data streams are then converted into pulse streams in natural binary code for facilitating differential encoding.Table 2-1 Binary Combinations DECIMAL GRAY CODE NATURAL BINARY CODE

0 1 2 3

0 0 1 1

0 1 1 0

0 0 1 1

0 1 0 1

2-18

ROI-S04488


Table 2-2 shows typical operation of the differential encoding circuit. Phases in the natural-binary-coded pulse streams are accumulated in quaternary notation at every time slot. The data streams thus encoded are reconverted into pulse streams in gray code and then sent to a driver.Table 2-2 Typical Operation of Differential Encoding CircuitTIME SLOT NATURALBINARYCODED DATA Data 1 Data 2 Quaternary + ENCODED DATA Quaternary Data 1 Data 2 0 0 0 1 0 1 0* 1 0 1 1 + 0 0 0 2 1 1 3 + 2 1 0 0 0 0 3 1 0 2 4 1 0 2 5 0 0 0 6 1 0 2 7 0 1 1 8 1 1 3 9 0 0 0 + 2 1 0 2 1 0 1 0 1 10 1 1 3 + 2 ... 1 ... 0 ... 11 ... 0 ... 1 ... 1 ...

0 0 0 2 1 0 3 1 1

Note: * Operating process given above assumes that the initial time slot is 0.

2.3.2

4-Phase Shift Keying ModulationTo permit 4-phase shift keying modulation, the encoded data streams are converted into two separate two-level baseband signals for the P and Q channels by the digital-to-analog converter (D-A CONV) on the MOD section according to the logical status (see Fig. 2-3). To limit the associated transmitter output power spectrum, the voltage spectrum of the two-level baseband signal is shaped by each low-pass filter. The filtered signals are applied to a 4-phase modulator (4PH MOD). To obtain an 850 MHz IF carriers for 4PH MOD, an 850 MHz carrier is generated by the 850 MHz voltage controlled oscillator (VCO), and is split into two for the P and Q channels. The 850 MHz carrier for the Q channel is phase-shifted by /2 from the P channel. The MOD modulates each of the 850 MHz carriers with a related twolevel baseband signal, and combines the modulated 850 MHz signals on the P and Q channels to arrange a four-phase assignment as shown in Fig. 2-2. The obtained 850 MHz IF signal is filtered by a LPF for eliminating the out-of-band components, amplified up to the required level by an automatic gain control (AGC) amplifier and sent to the ODU. Then, it is combined with 450 kHz amplitude-modulated engineering orderwire (EOW) signal and 10 MHz amplitude shift keying (ASK)-modulated control signal.

2-19


ROI-S04488

3/2 STATUS 1(0) 2(/2) 3() 4(3/2) P CHANNEL -L -L +L +L Q CHANNEL -L +L +L -L 0 -L

P +L

+L

Q

-L

/2

Fig. 2-3 PSK Modulation

2.3.3

Orderwire Signal ModulationTo facilitate an EOW between the IDU and ODU, the EOW signal is amplitude-modulated with the 450 kHz carrier by the orderwire modulator (EOW MOD) on the MOD section. The modulated EOW signal is filtered to eliminate higher out-of-band noise, amplified up to the required level and combined with the 850 MHz IF signal through a band-pass filter (BPF). This eliminates lower out-of-band noise, receiving IF signal (70 MHz), and an arrester (ARSR) protecting the equipment from harmful voltages caused by lightning.

2.4

DemodulationThis section describes the EOW and alarm signal demodulation, main signal demodulation and differential decoding.

2.4.1

EOW and Alarm Signal DemodulationThe received (RX) signal from the ODU contains a 70 MHz IF signal, 468 kHz amplitude-modulated EOW signal and 10 MHz ASK-modulated alarm (ALM) signal. The RX signal is branched into two separate signals; One is sent to the DEM section through the BPF which eliminates the transmitting IF, EOW and ALM signals, and the other goes through a BPF which eliminates the 70 MHz IF signal. The orderwire demodulator (EOW DEM) demodulates the 468 kHz amplitude-modulated EOW signal. The demodulated 10 MHz ASK alarm signal is sent to the CPU for further processing.

2-20

ROI-S04488


2.4.2

Main Signal DemodulationThe incoming 70 MHz IF signal is amplified up to the required level by an AGC amplifier and split into two separate signals for the P and Q channels and then fed to the mixer. In addition to the 70 MHz IF signals, two carriers having a phase difference of /2 produced by the carrier recovery circuit, which consists of a carrier synchronizer, a 70 MHz oscillator, and a carrier splitter (/2), are applied to the decision circuit. In the decision circuit, each 70 MHz IF signal is coherent-detected with the related carrier to represent the original baseband signal corresponding to the phase assignment (see Fig. 2-4)./2

CARR 1

INPUT PHASE 0 /2

DETECTED OUTPUT P CHANNEL -1 -1 +1 +1 Q CHANNEL -1 +1 +1 -1

0

CARR 2 3/2

3/2

Note: 1 is replaced by logic 0 and +1 by logic 1.

Fig. 2-4 Demodulation

The clock oscillator circuit generates a 38.383 MHz clock for the analogto-digital converter (A-D CONV) circuits. In the A-D CONV, two 38.383 Mbps data streams are regenerated with 38.383 MHz clock. Then the two re-generated 38.383 data streams enter the differential decoding (DIFF DECOD) circuit.

2.4.3

Differential DecodingThe process of differential decoding is the reverse of the differential encoding at the transmitting end. In the natural binary-coded pulse streams, the phase of the time slot leading one bit before an incoming time slot is subtracted in quaternary notation from that of the incoming time slot. The decoded 38.383 Mbps data streams are sent to the frame synchronizer and descramblers on the DPU section of the MAIN BOARD for receive digital processing.

2-21


ROI-S04488

2.5

Receive Digital ProcessingThis section describes the frame synchronization, descrambling and demultiplexing.

2.5.1

Frame SynchronizationFS bits which are multiplexed at the transmitting end are detected and comparing to establish the frame synchronizer.

2.5.2

DescramblingTo recover original data streams from received data streams, descrambling is performed by using the same frame pattern as the transmitting end.

2.5.3

DemultiplexingThe two descrambled data streams enter the demultiplexer (DEMUX). The DEMUX circuit extracts the frame pattern, multiframe pattern, ASC and DSC signal bits, etc. from overhead bits with a clock produced at the TIM GEN.

2.6

Receive Line EqualizationThis section describes the demultiplexing and unipolar-to-bipolar code conversion.

2.6.1

DemultiplexingFrom received data streams, the alarm information, AIS RCVD, loopback control/answer and stuff information bits, etc. are extracted by the Demultiplexer (DEMUX) circuit. Then, 2.048 Mbps x N unipolar data/ CLK signals are fed to the next U/B CONV circuit.

2.6.2

Unipolar-to-Bipolar Code ConversionTo provide the associated DTE with the original data stream in bipolar pulse format, the unipolar-coded 2.048 Mbps data streams are converted into 2.048 Mbps data streams in the specified bipolar pulse format (HDB3) by the U-B CONV circuit on the INTFC section.

2-22

ROI-S04488


2.7

Analog Service Channel Signal Transmission (Optional)An analog service channel (ASC) transmission is performed in the ASC INTFC section, which provides the pulse code modulation codec (PCM CODEC) and PCM decodec (PCM DECOD) circuits. The ASC transmission is described in accordance with transmission side and receive side, respectively.

2.7.1

ASC Transmit SideAn analog signal applied to the ASC IN terminal is passed on to PCM CODEC circuit. An analog signal is converted into a 80 kbps (approx.) digital signal at the PCM CODEC circuit by 10 kHz (approx.) timing pulse and 80 kHz (approx.) clock signal received from the MAIN BOARD. The converted digital signal is fed to the MAIN BOARD.

2.7.2

ASC Receive SideThe 80 kbps (approx.) digital signal received from the MAIN BOARD is applied to the PCM DECOD circuit. This 80 kbps (approx.) bps digital signal is converted into an analog signal by the 10 kHz (approx.) timing pulse and 80 kHz (approx.) clock signal, and then the analog signal is fed to the ASC OUT terminal.

2.8

9.6 K Digital Service Channel TransmissionThe 9.6 K digital service channel (DSC) transmission is explained in the following section: TRANSMISSION CHANNEL DSC 1 and DSC 2 MAIN BOARD

2-23


ROI-S04488

2.8.1

DSC Transmit SideThe DSC signal received from DSC IN terminal is applied to level converter circuit. Here, the DSC signal is converted into 9.6 K transistortransistor logic (TTL) level in the level converter and fed to the digital processing unit (DPU) circuit on the MAIN BOARD. In the DPU circuit, 9.6 K (TTL) signal is converted into 40 kbps (approx.) with 40 kHz (approx.) clock produced at the MAIN BOARD, and fed to the opposite station.

2.8.2

DSC Receive SideThe 40 kbps (approx.) extracted from DPU circuit on the MAIN BOARD is converted into 9.6 K (TTL) signal with 9.6 kHz clock. The 9.6 K (TTL) signal is converted into 9.6 K DSC signal in the level converter, and fed to the DSC OUT terminal.

2.9

Alarm Signal TransmissionWith optional ALM INTFC card, two channels cluster alarm transmission provides for external/internal alarm signal extension.

2.10 Wayside Signal Transmission (Optional)The wayside (WS) signal transmission is performed in the WS INTFC section.

2.10.1 WS Transmit SideThe 2.048 Mbps bipolar signal applied through the WS IN terminal is fed to the bilopar-unipolar converter (B-U CONV) circuit, where it is converted into a NRZ unipolar signal. NRZ unipolar signal is codeconverted by the HDB-3 decoder. The code-converted 2.048 Mbps WS data signal is fed to the MAIN BOARD together with the clock.

2.10.2 WS Receive SideThe process of RX side is the reverse of the process of the TX side. The 2.048 Mbps WS data signal and clock are applied to the HDB-3 encoder. In the HDB-3 encoder, 2.048 Mbps WS signal is code-converted and fed to unipolar-bipolar converter (U-B CONV). The 2.048 Mbps unipolar data signal is converted into the 2.048 Mbps bipolar data stream and fed to the WS OUT terminal.

2-24

ROI-S04488


2.11 64 K Digital Service Channel TransmissionTwo types of transmission are provided for the service channel: codirectional transmission conforming to ITU-T G.703 and transmission conforming to V.11. Each transmission scheme corresponds to the type of 64K INTFC section.

2.11.1 Service Channel Transmission of G.703 Codirectional(a) TX Side A 64 kbps bipolar signal is applied to the 64K INTFC section, then converted to a unipolar signal by the B-U CONV circuit. The unipolar signal is then code-converted with a decoder. The codeconverted signal is stuff-synchronized with 80 kHz (approx.) clock, then converted into a radio transmission format. After conversion, a 80 kbps (approx.) data signal is fed to the MAIN BOARD. (b) RX Side The process of RX side is the reverse of the process of the TX side. A 80 kbps (approx.) data signal and the 80 kHz (approx.) clock signal from the MAIN BOARD are entered in the synchronizer circuit for the frame synchronization. The frame synchronized data signal is de-stuffed and converted into 64 kbps data signal. The resulting 64 kbps data signal is code-converted into G.703 signal with an encoder circuit, then converted again with the unipolarbipolar converter (U-B CONV) circuit into a 64 kbps bipolar data signal which is transmitted to the output terminal.

2.11.2 Service Channel Transmission of V.11(a) TX Side The 64 kbps (approx.) unipolar data signal and the 64 kHz (approx.) clock signal are entered into 64K INTFC section. The 64 kbps unipolar data signal undergoes stuff-synchronization with the 80 kHz (approx.) clock signal, then is converted into a format for the radio transmission and fed to the MAIN BOARD as a 80 kbps (approx.) data signal. (b) RX Side The process of RX side is the reverse of the process of the TX side. The 80 kbps (approx.) unipolar data signal from the MAIN BOARD and the 80 kHz (approx.) clock signal are entered into 64K INTFC section. The data signal then is frame synchronized with the frame synchronizer circuit, then de-stuffed converted into a 64 kbps unipolar data signal with a 64 kHz clock signal, and is fed to the output terminal.

2-25


ROI-S04488

2.12 LAN Signal TransmissionThe data signal for LAN (10BASE-T or 100BASE-TX) transmission is performed in the LAN INTFC module. Radio section throughput is selectable for each port. When 2 Mbps throughput is selected, ITU-T G.704 framing mode setting is available.

2.12.1 Transmit SideThe data signal applied through the LAN PORT1 and/or PORT2 terminals is fed to the LAN signal Switch Circuit which selects 10BASE-T or 100 BASE-TX. The data signal is converted to HDLC like frame for radio transmission and multiplexed with specified frame in the main data signal.

2.12.2 Receive SideThe data signal for LAN network is extracted from the main data signal. This data signal is performed HDLC like frame detection and fed to the LAN signal switch. The data signal from the LAN signal switch is output through the LAN PORT1 and/or PORT2 terminals. Note: The switching of data between PORT1 and PORT2 is not available.

2.13 Alarm and Control FunctionsAlarm and control functions of the IDU are described herein. Fault detection circuits are provided in the IDU, sending signals to give alarm indications and remote alarm reports (see Fig. 2-1, Fig. 2-2 and Table 23). The alarm signals initiated by detection circuits in the ODU are also sent to the IDU. Therefore, the total alarm indications for the IDU and ODU are provided by the IDU and ODU indicators on the IDU. When the equipment is operating normally, these indicators on the IDU stay unlit. When an abnormal condition occurs in the IDU (except power supply failure), the IDU indicator lights and a remote alarm report is made. The same applies for the ODU indicator. To monitor/control the alarm and status of IDU/ODU, PM CARD module communicates with pasolink network management system (PNMS) or pasolink network management terminal (PNMT) via RS-232C (19.2 kbps).

2-26

ROI-S04488

OPERATION

Table 3-1 Interface Terminals and Jacks in 1+0 system (1/8) Terminal Description

IDU TRAFFIC IN/OUT (CH 1 to CH 8) (D-sub Connector, 37 Pins) Pins 1 (+) and 2 () Pins 3 (+) and 4 () Pins 6 (+) and 7 () Pins 8 (+) and 9 () Pins 11 (+) and 12 () Pins 13 (+) and 14 () Pins 16 (+) and 17 () Pins 18 (+) and 19 () Pins 20 (+) and 21 () Pins 22 (+) and 23 () Pins 25 (+) and 26 () Pins 27 (+) and 28 () Pins 29 (+) and 30 () Pins 31 (+) and 32 () Pins 34 (+) and 35 () Pins 36 (+) and 37 () Pins 5,10,15,24 and 33 TRAFFIC IN/OUT (CH 9 to CH 16) (D-sub Connector, 37 Pins) Pins 1 (+) and 2 () Pins 3 (+) and 4 () Pins 6 (+) and 7 () Pins 8 (+) and 9 () 2.048 Mbps HDB-3 coded data input/output from/to DTE (CH 1 to CH 8) CH8 data input CH7 data input CH6 data input CH5 data input CH4 data input CH3 data input CH2 data input CH1 data input CH8 data output CH7 data output CH6 data output CH5 data output CH4 data output CH3 data output CH2 data output CH1 data output Ground 2.048 Mbps HDB-3 coded data input/output from/to DTE (CH 9 to CH 16) (for 16 x 2 MB system only) CH16 data input CH15 data input CH14 data input CH13 data input

3-3

OPERATION

ROI-S04488


Pins 11 (+) and 12 () Pins 13 (+) and 14 () Pins 16 (+) and 17 () Pins 18 (+) and 19 () Pins 20 (+) and 21 () Pins 22 (+) and 23 () Pins 25 (+) and 26 () Pins 27 (+) and 28 () Pins 29 (+) and 30 () Pins 31 (+) and 32 () Pins 34 (+) and 35 () Pins 36 (+) and 37 () Pins 5,10,15,24 and 33 10/100BASE-T IN/OUT (Modular Connector RJ-45 8pins) (PORT1/PORT2) Pin 1 Pin 2 Pin 3 Pin 6 IF IN/OUT (N-P Connector)

CH12 data input CH11 data input CH10 data input CH9 data input CH16 data output CH15 data output CH14 data output CH13 data output CH12 data output CH11 data output CH 10 data output CH 9 data output Ground LAN signal input/output (optional) (MDI-X/MDI auto-sensing) MDI MDI-X RD + RD TD + TD TD + TD RD + RD

TX IF signal output to ODU and RX IF signal input from ODU Caution: Do not connect other cables to this jack, because the 43 V DC power is superimposed on this jack. Danger: Do not touch the jack core before turning off power switch.

3-4

ROI-S04488

OPERATION


OW/DSC/ASC (D-sub Connector, 25 Pins) Pins 1 (+) and 2 ()/ Pins 1 and 2*2

Engineering orderwire (EOW), digital service channel (DSC), analog service channel (ASC) and ALARM signal input/ output ASC1 input (VF) (optional) or Alarm1*2 input (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 1 input (photocoupler) Normal signal in : Open Alarm signal in : Closed ASC2 input (VF) (optional) or Alarm2*2 input (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 2 input (photocoupler) Normal signal in : Open Alarm signal in : Closed EOW input (VF) 64 kHz clock input*1 DSC1 input (RS-232C, 64K (G.703)*1 or 64K (V.11)*1 ) DSC2 input (RS-232C, RS-422 or RS-485) ASC1 output (VF) (optional) or Alarm1*2 output (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 1 output (relay contact) Normal signal out : Open Alarm signal out : Closed ASC2 output (VF) (optional) or Alarm2*2 output (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 2 output (relay contact) Normal signal out : Open Alarm signal out : Closed EOW output (VF) 64 kHz clock output*1 DSC1 output (RS-232C, 64K (G.703)*1 or 64K (V.11)*1) DSC2 output (RS-232C, RS-422 or RS-485)

Pins 3 (+) and 4 ()/ Pins 3 and 4*2

Pins 5 (+) and 6 () Pins 7 (+) and 8 () Pins 9 (+) and 10 () Pins 11 (+) and 12 () Pins 14 (+) and 15 ()/ Pins 14 and 15*2

Pins 16 (+) and 17 ()/ Pins 16 and 17*2

Pins 18 (+) and 19 () Pins 20 (+) and 21 () Pins 22 (+) and 23 () Pins 24 (+) and 25 ()

3-5

OPERATION

ROI-S04488


Pin 13

Ground Notes:1. *1 Optional 2. Both ASC and DSC 64K cannot be used simultaneously. Alarm and transmission network surveillance auxiliary alarm input/output Transmitter alarm output*3 Between Pins 1 and 2 Open Closed Between Pins 4 and 5 Open Closed Between Pins 1 and 3 Closed Open Between Pins 4 and 6 Closed Open

ALM/AUX ALM (D-sub Connector, 37 Pins) Pins 1 (COM), 2 (NO) and 3 (NC)

Normal state Alarm state Pins 4 (COM), 5 (NO) and 6 (NC)

: :

Receiver alarm output*3

Normal state Alarm state Pins 20 (COM), 21 (NO) and 22 (NC)

: :

BER alarm output when BER worse than 10-6/10-5/10-4/10-3 (selectable)*3 Between Between Pins 20 and 21 Pins 20 and 22 Normal state : Open Closed Alarm state : Closed Open Maintenance alarm output*3 Between Pins 23 and 24 Normal state : Open Alarm state : Closed Between Pins 23 and 25 Closed Open

Pins 23 (COM), 24 (NO) and 25 (NC)

Note:*3 The BER threshold values and alarm items are set in factory (default). To change the setting of alarm items by the PC, refer to Section 3.4.1 Alarm Table of this Manual. (Housekeeping alarm input through optional PM CARD.) Pin 7 Pin 8 (G) Pin 9 Input 11 Input 12 Input 21

3-6

ROI-S04488

OPERATION


Pin 10 (G) Pin 11 Pin 12 (G) Pin 13 Pin 14 (G) Pin 15 Pin 16 (G) Pin 17 Pin 18 (G) Pin 26 Pin 27 Pin 28 Pin 29 Pin 30 Pin 31 Pin 32 Pin 33 Pin 19 Pins 34 and 35

Input 22 Input 31 Input 32 Input 41 Input 42 Input 51 Input 52 Input 61 Input 62 (Housekeeping control output through optional PM CARD.) Output 11 Output 12 Output 21 Output 22 Output 31 Output 32 Output 41 Output 42 Ground Not Used Note: Input[ ] indicates the input of housekeeping alarm. The figure means that same order of tens makes the same pair e.g. 11/12 forms a pair. IDU side interface uses that of photo-coupler, the photo-coupler turns ON if pair elements contact with each other. Output[ ] indicates the output of housekeeping alarm. Figure means the same as in the Input. IDU side output uses the relay contact interface. Input terminal of buzzer signal Note: In back-to-back station, the buzzer information transmits to the next station.

Pin 36

3-7

OPERATION

ROI-S04488


Pin 37

Output terminal of buzzer signal Note: In back-to-back station, the buzzer information transmits to the next station. Network management system (NMS) data input/output or remote access (RA) data input/output Note: When the PM CARD is not mounted on the equipment, this connector is used for Remote Access. PM CARD RA RA TXD RA GND RA RXD RA RTS RA CTS

NMS/RA (D-sub Connector, 15 Pins)

Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 LA PORT (D-sub Connector, 15 pin) Pin 1 Pin 3 Pin 4 Pin 5 Pin 11 Pin 12

Party alarm management system (PAMS) TXD EMS TXD/TXD+ EMS RXD/TXD EMS TXDR EMS TRS/RXD+ EMS CTS/RXD Ground PAMS RXD NMS TXD/TXD+ NMS RXD/TXD NMS TXDR NMS RTS/RXD+ NMS CTS/RXD

Control/monitoring signal input/output from/to personal computer TXD RXD RTS CTS LOCAL CTS LOCAL RTS

3-8

ROI-S04488

OPERATION


Pin 13 Pin 15 Pins 2, 8 and 14 NMS LAN (RJ45 8 pins) Pin 1 Pin 2 Pin 3 Pin 6 WS /SC LAN (RJ45 8 pins)

LOCAL RXD LOCAL TXD Ground Network management station (PNMS) data input/output LAN PNMS TX+ LAN PNMS TX LAN PNMS RX+ LAN PNMS RX Way side signal input/output For 120 ohms balanced interface

Pin 1 (+) and Pin 2 () Pin 4 (+) and Pin 5 () Pin 8

WS OUT WS IN Frame Ground (G) For 75 ohms unbalanced interface

Pin 1 and Pin 8 (G) Pin 4 and Pin 8 (G)

WS OUT WS IN Note: Available if WS INTFC is equipped. Disable when SC LAN INTFC is equipped.

WS /SC LAN (RJ45 8 pins) Pin 1 Pin 2 Pin 3 Pin 6

DSC data for LAN LAN DSC TX+ LAN DSC TX LAN DSC RX+ LAN DSC RX Note: Available when SC LAN INTFC is equipped. Disabled when ALM INTFC, ASC INTFC or DSC INTFC 64K is used.

3-9

OPERATION

ROI-S04488


SEL V (LINE IN) (Molex M5557-4R Connector, 4 Pins) Pin 1 Pin 2

20 V to 60 V/+20 V to +60 V DC power input Note: The range of DC power input depends on system requirement. 0 V*4 (or +48 V*5) 48 V*4 (or 0 V*5) Note: *4 20 V to 60 V DC power input. *5 +20 V to +60 V DC power input. Frame ground

FG

3-10

ROI-S04488

OPERATION

Table 3-2 Interface Terminals and Jacks of 1+1 System (1/9) Terminal Description

TRAFFIC IN/OUT (CH 1 to CH 8) (D-sub Connector, 37 Pins) Pins 1 (+) and 2 () Pins 3 (+) and 4 () Pins 6 (+) and 7 () Pins 8 (+) and 9 () Pins 11 (+) and 12 () Pins 13 (+) and 14 () Pins 16 (+) and 17 () Pins 18 (+) and 19 () Pins 20 (+) and 21 () Pins 22 (+) and 23 () Pins 25 (+) and 26 () Pins 27 (+) and 28 () Pins 29 (+) and 30 () Pins 31 (+) and 32 () Pins 34 (+) and 35 () Pins 36 (+) and 37 () Pins 5,10,15,24 and 33 TRAFFIC IN/OUT (CH 9 to CH 16) (D-sub Connector, 37 Pins) Pins 1 (+) and 2 () Pins 3 (+) and 4 () Pins 6 (+) and 7 () Pins 8 (+) and 9 () Pins 11 (+) and 12 ()

2.048 Mbps HDB3 coded data input/output from/to DTE (CH 1 to CH 8) CH8 data input CH7 data input CH6 data input CH5 data input CH4 data input CH3 data input CH2 data input CH1 data input CH8 data output CH7 data output CH6 data output CH5 data output CH4 data output CH3 data output CH2 data output CH1 data output Ground 2.048 Mbps HDB3 coded data input/output from/to DTE (CH 9 to CH 16) (for 16 x 2 MB system only) CH16 data input CH15 data input CH14 data input CH13 data input CH12 data input

3-11

OPERATION

ROI-S04488


Pins 13 (+) and 14 () Pins 16 (+) and 17 () Pins 18 (+) and 19 () Pins 20 (+) and 21 () Pins 22 (+) and 23 () Pins 25 (+) and 26 () Pins 27 (+) and 28 () Pins 29 (+) and 30 () Pins 31 (+) and 32 () Pins 34 (+) and 35 () Pins 36 (+) and 37 () Pins 5,10,15,24 and 33 10/100BASE-T IN/OUT (Modular Connector RJ-45 8pins) (PORT1/PORT2) Pin 1 Pin 2 Pin 3 Pin 6 IF IN/OUT (N-P Connector)

CH11 data input CH10 data input CH9 data input CH16 data output CH15 data output CH14 data output CH13 data output CH12 data output CH11 data output CH 10 data output CH 9 data output Ground LAN signal input/output (optional) (MDI-X/MDI auto-sensing) MDI MDI-X RD + RD TD + TD TD + TD RD + RD

TX IF signal output to ODU and RX IF signal input from ODU Caution: Do not connect other cables to this jack, because the 43 V DC power is superimposed on this jack. Danger: Do not touch the jack core before turning off power switch.

3-12

ROI-S04488

OPERATION


OW/DSC/ASC (D-sub Connector, 25 Pins) Pins 1 (+) and 2 ()/ Pins 1 and 2*2

Engineering orderwire (EOW), digital service channel (DSC), analog service channel (ASC) and ALARM signal input/output ASC1 input (VF) (optional) or Alarm1*2 input (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 1 input (photocoupler) Normal signal in : Open Alarm signal in : Closed ASC2 input (VF) (optional) or Alarm2*2 input (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 2 input (photocoupler) Normal signal in : Open Alarm signal in : Closed EOW input (VF) 64 kHz clock input*1 DSC1 input (RS-232C, 64K (G.703)*1 or 64K (V.11)*1) DSC2 input (RS-232C, RS-422 or RS-485) ASC1 output (VF) (optional) or Alarm1*2 output (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 1 output (relay contact) Normal signal out : Open Alarm signal out : Closed ASC2 output (VF) (optional) or Alarm2*2 output (optional) Notes: 1. *2 Applies to the ALM INTFC module. 2. Cluster Alarm 2 output (relay contact) Normal signal out : Open Alarm signal out : Closed EOW output (VF) 64 kHz clock output*1 DSC1 output (RS-232C, 64K (G.703)*1 or 64K (V.11)*1) DSC2 output (RS-232C, RS-422 or RS-485) Ground Notes:1. *1 Optional 2. Both ASC and DSC 64K cannot be used simultaneously.

Pins 3 (+) and 4 ()/ Pins 3 and 4*2

Pins 5 (+) and 6 () Pins 7 (+) and 8 () Pins 9 (+) and 10 () Pins 11 (+) and 12 () Pins 14 (+) and 15 ()/ Pins 14 and 15*2

Pins 16 (+) and 17 ()/ Pins 16 and 17*2

Pins 18 (+) and 19 () Pins 20 (+) and 21 () Pins 22 (+) and 23 () Pins 24 (+) and 25 () Pin 13

3-13

OPERATION

ROI-S04488


ALM (D-sub Connector, 37 Pins) Pins 1 (COM), 2 (NO) and 3 (NC)

Alarm and answer signal input/output No. 1 transmitter alarm output*3 Between Pins 1 and 2 Normal state : Open Alarm state : Closed No. 2 transmitter alarm output*3 Between Pins 4 and 5 Normal state : Open Alarm state : Closed No. 1 receiver alarm output*3 Between Pins 7 and 8 Normal state : Open Alarm state : Closed No. 2 receiver alarm output*3 Between Pins 10 and 11 Normal state : Open Alarm state : Closed

Between Pins 1 and 3 Closed Open Between Pins 4 and 6 Closed Open Between Pins 7 and 9 Closed Open Between Pins 10 and 12 Closed Open




Pins 14

Buzzer signal output Note: The terminal is used as an input terminal of buzzer signal for the back-to-back station. Buzzer signal input Note: The terminal is used as an input terminal of buzzer signal for the back-to-back station. BER alarm output when BER worse than 10-6/10-5/10-4/10-3 (selectable)*3 Between Between Pins 20 and 21 Pins 20 and 22 Normal state : Open Closed Alarm state : Closed Open

Pins 15


3-14

ROI-S04488

OPERATION



Maintenance alarm output*3 Between Pins 23 and 24 Normal state : Open Alarm state : Closed

Between Pins 23 and 25 Closed Open

Pins 26 (COM), 27 (No. 2) and 28 (No. 1)

Switching answer signal output for transmitter Between Between Pins 26 and 27 Pins 26 and 28 No. 1 CH selection : Open Closed No. 2 CH selection : Closed Open Switching answer signal output for receiver Between Between Pins 29 and 30 Pins 29 and 31 No. 1 CH selection : Open Closed No. 2 CH selection : Closed Open 3 Note:* The BER threshold values and alarm items are set in factory (default). To change the setting of alarm items by the PC, refer to Section 3.4.1 "Alarm Table" of this Manual. Transmission network surveillance auxiliary Note: When an optional PM CARD module is mounted, following input/output terminals (Pins 1 to 21) are used as housekeeping alarm/control interface. Input 11 Input 12 Input 21 Input 22 Input 31 Input 32 Input 41 Input 42 Input 51 Input 52 Input 61

Pins 29 (COM), 30 (No. 2) and 31 (No. 1)

AUX ALM (D-sub Connector, 25 Pins)

Pin 1 Pin 2 (G) Pin 3 Pin 4 (G) Pin 5 Pin 6 (G) Pin 7 Pin 8 (G) Pin 9 Pin 10 (G) Pin 11

3-15

OPERATION

ROI-S04488


Pin 12 (G) Pin 13 Pin 14 Pin 15 Pin 16 Pin 17 Pin 18 Pin 19 Pin 20 Pin 21

Input 62 Ground Output 11 Output 12 Output 21 Output 22 Output 31 Output 32 Output 41 Output 42 Note: Input[ ] indicates the input of housekeeping alarm. The figure means that same order of tens makes the same pair e.g. 11/12 forms a pair. IDU side interface uses that of photo-coupler, the photo-coupler turns ON if pair elements contact with each other. Output[ ] indicates the output of housekeeping alarm. Figure means the same as in the Input. IDU side output uses the relay interface.

Pins 22 and 23 Pins 22 and 24 Pins 22 and 25 NMS/RA (D-sub Connector, 15 Pins)

Remote switching control signal input for release Remote switching control signal input for No. 1 channel No. 1 channel selection : closed Remote switching control signal input for No. 2 channel No. 2 channel selection : closed Network management system (NMS) data input/output or remote access (RA) data input/output Note: When the PM CARD is not mounted on the equipment, this connector is used for Remote Access. PM CARD RA RA TXD RA GND RA RXD

Pin 1 Pin 2 Pin 3

Party alarm management system (PAMS) TXD EMS TXD/TXD+ EMS RXD/TXD

3-16

ROI-S04488

OPERATION


Pin 4 Pin 5 Pin 6 Pin 7 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 LA PORT (No. 1) (D-sub Connector, 15 pin) Pin 1 Pin 3 Pin 4 Pin 5 Pin 11 Pin 12 Pin 13 Pin 15 Pins 2, 8 and 14 LA PORT (No. 2) (D-sub Connector, 15 pin) Pin 1 Pin 3 Pin 4 Pin 5 Pin 11

EMS TXDR EMS TRS/RXD+ EMS CTS/RXD Ground PAMS RXD NMS TXD/TXD+ NMS RXD/TXD NMS TXDR NMS RTS/RXD+ NMS CTS/RXD

RA RTS RA CTS

Control/monitoring signal input/output from/to the personal computer for No. 1 channel TXD RXD RTS CTS LOCAL CTS LOCAL RTS LOCAL RXD LOCAL TXD Ground Control/monitoring signal input/output from/to the personal computer for No. 2 channel TXD RXD RTS CTS LOCAL CTS

3-17

OPERATION

ROI-S04488


Pin 12 Pin 13 Pin 15 Pins 2, 8 and 14 LA PORT (COMMON) (D-sub Connector, 15 pin) Pin 1 Pin 3 Pin 4 Pin 5 Pin 11 Pin 12 Pin 13 Pin 15 Pins 2, 8 and 14 NMS LAN (RJ45 8 pins) Pin 1 Pin 2 Pin 3 Pin 6 SC LAN (RJ45 8 pins) Pin 1 Pin 2 Pin 3 Pin 6

LOCAL RTS LOCAL RXD LOCAL TXD Ground Control/monitoring signal input/output from/to personal computer for both No. 1 and No. 2 channels TXD RXD RTS CTS LOCAL CTS LOCAL RTS LOCAL RXD LOCAL TXD Ground Pasolink network management station (PNMS) data input/ output LAN PNMS TX+ LAN PNMS TX LAN PNMS RX+ LAN PNMS RX DSC data for LAN LAN DSC TX+ LAN DSC TX LAN DSC RX+ LAN DSC RX

3-18

ROI-S04488

OPERATION


WS /SC LAN (RJ45 8 pins)

Way side signal input/output For 120 ohms balanced interface

Pin 1 (+) and Pin 2 () Pin 4 (+) and Pin 5 () Pin 8

WS OUT WS IN Frame Ground (G) For 75 ohms unbalanced interface

Pin 1 and Pin 8 (G) Pin 4 and Pin 8 (G)

WS OUT WS IN Note: Available if WS INTFC is equipped. Disable when SC LAN INTFC is equipped.

WS /SC LAN (RJ45 8 pins) Pin 1 Pin 2 Pin 3 Pin 6

DSC data for LAN LAN DSC TX+ LAN DSC TX LAN DSC RX+ LAN DSC RX Note: Available when SC LAN INTFC is equipped. Disabled when ALM INTFC, ASC INTFC or DSC INTFC 64K is used.

SELV (LINE IN) (Molex M5557-4R Connector, 4 Pins) Pin 1 Pin 2

-20 V to -60 V DC or +20 V to +60 V DC power input Note: The range of DC power input depends on system requirement. 0 V*4 (or +48 V*5) 48 V*4 (or 0 V*5) Note: *4 20 V to 60 V DC power input. 5 * +20 V to +60 V DC power input. Frame ground

FG

3-19

OPERATION

ROI-S04488

3.2 Controls, Indicators and Test JacksThe controls and indicators and test jacks on the IDU (see Fig. 3-3) are described as follows. IDU indicator Lights when: Input data stream of CH ( ) from DTE is lost, AIS (all 1) signal of CH ( ) is received from DTE (selectable), TX/RX clock synchronization is lost at the DPU section, If a 2 MB is fed to a CH which is selected as "Not Used" (selectable), If a 2 MB is fed to the WS CH after setting to "Not Used" (selectable), AIS signal of CH ( ) is sent (depending on system requirement) (selectable), Bipolar output pulse of CH ( ) is lost at the INTFC section, Carrier synchronization is lost at the DEM section, High bit error rate (High BER) is worse than preset value (1x10-3) at the DPU section, BER is worse than preset value at the DPU section (1x10-3, 1x10-4, 1x10-5 or 1x10-6, selectable), Frame synchronization is lost at the DPU section, VCO synchronization is lost at the MOD section, Output data stream or master clock signal is lost at the DPU(TX) section, ODU indicator Lights when: Transmit RF power decreases 3 dB from normal at the ODU, Receiver input level decreases by a preset value from squelch level at the ODU, APC loop of local oscillator unlocks at the ODU or, IF signal from the IDU is lost at the ODU,

3-20

ROI-S04488

OPERATION

MAINT indicator Lights when the following conditions are controlled by the PC: Maintenance condition, Loopback condition, BER AIS condition, MOD CW condition, MUTE (TX output power) condition, PWR switch: Turns input DC power on or off. PWR indicator: Lights when equipment is in normal operation. RESET switch: RESET switch initiates the CPU operation. CALL switch: Transmits calling signal on engineering orderwire (EOW). Then, buzzer in opposite station rings. EOW jack: Gives access to EOW signal immediately when headset is connected. 100M indicator: Lights when 100 Mbps is selected in data speed of LAN interface. Goes out when 10 Mbps is selected in data speed of LAN interface. LINK/ACT indicator: Lights when the IDU and associated equipment are linked. COLX/DUPLEX indicator: Lights when : The input/output LAN signal is in Full Duplex mode, When the LAN signal in Half Duplex mode, a collision condition occurs.

3-21

OPERATION

ROI-S04488

TX ALM 1 indicator (Only for 1+1 system): Lights when: Transmitter RF output power decreases 3 dB from normal at the No. 1 channel ODU, APC loop of the local oscillator unlocks or IF signal from the IDU is lost at the No. 1 channel ODU, Output data stream or master clock signal is lost at the No. 1 channel DPU (TX), VCO synchronization is lost at the No. 1 channel MOD, If a 2 MB is fed to a CH which is selected as "Not Used" (selectable) at the No. 1 channel IDU, If a 2 MB is fed to the WS CH after setting to "Not Used" (selectable) at the No. 1 channel IDU, Communication between CPU of No. 1 channel ODU and CPU on the IDU is lost. TX ALM 2 indicator (Only for 1+1 system) Lights when: Transmitter RF output power decreases 3 dB from normal at the No. 2 channel ODU, APC loop of the local oscillator unlocks or IF signal from the IDU is lost at the No. 2 channel ODU, Output data stream or master clock signal is lost at the No. 2 channel DPU (TX), VCO synchronization is lost at the No. 2 channel MOD, If a 2 MB is fed to a CH which is selected as "Not Used" (selectable) at the No. 2 channel IDU, If a 2 MB is fed to the WS CH after setting to "Not Used" (selectable) at the No. 2 channel IDU, Communication between CPU of No. 2 channel ODU and CPU on the IDU is lost.

3-22

ROI-S04488

OPERATION

RX ALM 1 indicator (Only for 1+1 system) Lights when: Receiver input level decreases lower than a preset value from squelch level at the No. 1 channel ODU, APC loop of the local oscillator unlocks at the No. 1 channel ODU, IF signal is lost at the No. 1 channel DEM, High BER is worse than preset value (1 103) at the DPU, BER is worse than preset value at the No. 1 channel DPU (1 103, 1 104, 1 105 or 1 106 selectable), Frame synchronization is lost at the No. 1 channel DPU, Communication between CPU of No. 1 channel ODU and CPU of the IDU is lost. RX ALM 2 indicator (Only for 1+1 system) Lights when: Receiver input level decreases lower than a preset value from squelch level at the No. 2 channel ODU, APC loop of the local oscillator unlocks at the No. 2 channel ODU, IF signal is lost at the No. 2 channel DEM, High BER is worse than preset value (1 103) at the No. 2 channel DPU, BER is worse than preset value at the No. 2 channel DPU (1 103, 1 104, 1 105 or 1 106 selectable), Frame synchronization is lost at the No. 2 channel DPU, Communication between CPU of No. 2 channel ODU and CPU of the IDU is lost. TX OPR 1 indicator (Only for 1+1 system): Lights when the modulator and transmitter of No. 1 channel are selected.

3-23

OPERATION

ROI-S04488

TX OPR 2 indicator (Only for 1+1 system): Lights when the modulator and transmitter of No. 2 channel are selected. RX OPR 1 indicator (Only for 1+1 system): Lights when the demodulator and receiver of No. 1 channel are selected. RX OPR 2 indicator (Only for 1+1 system): Lights when the demodulator and receiver of No. 2 channel are selected. OPR SEL No. 1-AUTO-No. 2 switch (Only for 1+1 system) Enables channel switching depending on the setting position in Maintenance conditions as follows: No. 1 : Manually select No. 1 channel AUTO : Automatic switchover control No. 2 : Manually select No. 2 channel Caution: Before the start of maintenance, including operation of the OPR SEL SW on the front panel of the equipment, select the equipment to maintenance mode using the LCT. After all operation for maintenance have been completed, perform MAINT OFF setting.EOW

CALL


NMS LAN

FUSE (7.5A) +

IDU for 1+0

NMS/RA

LA PORT

SELV

PASOLINKRESET PWR ODU IDU MAINT FUSE (7.5A) LA PORT EOW CALL RESET OPR SEL No.1 +

No. 1 CH MD UNIT

SELV


MS LAN

SW UNIT

DSC/ASC NMS/RA LA PORT

IDU for 1+1No. 2 CH MD UNIT

No.2

PASOLINKRESET PWR ODU IDU MAINT FUSE (7.5A) LA PORT +

SELV

Fig. 3-3 Controls, Indicators and Test Jacks of the IDU

3-24

Odu Description and Operation GENERAL1.1 Equipment Composition

ROI-S04605

The ODU is provided with modules which are connected directly or by coaxial cable as shown in Table 1-1.Table 1-1 Component Module ArrangementAPPLICATION LOCATION NO. * MODULE 7 GHz H0738( ) H0722() 8 GHz H0739( ) H0723() 13 GHz H0330( ) H0360( ) 15 GHz H0331( ) H0361( ) 18 GHz H0332( ) H0362( ) 23 GHz H0333( ) H0363( ) H0321( ) H0390() 26 GHz H0334( ) H0364 ) 38 GHz H0335( ) H0365( )

1 2 3

RF CKT IF CKT PS

H0721()

H0323( )

Note: * Location numbers are keyed to those in Fig. 1-2.

2 (IF CKT) 1 (RF CKT)

1

ARX LEV MON

IFL

FG

3

View A

Note: Location numbers are keyed to those in Table 1-1.Fig. 1-2 Component Module Arrangement

1-2

ROI-S04605


2. FUNCTIONAL OPERATIONThis chapter describes the functional operation of the ODU which comprises of transmitter section, receiver section, and alarm and control section. A functional block diagram is shown in Fig. 2-1.

2.1 Transmitter SectionThis section describes Engineering Orderwire (EOW) signal demodulation and IF-to-RF conversion. The 850 MHz IF signal which comprises an EOW signal, monitor (MON) signal, alarm and control signals and DC component from the IDU is separated through the MPX circuit. The EOW signal is processed at the CPU and fed to the RX LEV MON jack. The DC component is applied to the PS module to produce regulated DC voltages which are used in the ODU. The 850 MHz IF signal enters the mixer (MIX) through the AGC AMP which compensate for any input IF signal level variations. The MIX mixes the incoming 850 MHz IF signal with a [ ] GHz band local signal generated by the synthesized RF local oscillator to produce the specified transmit RF signal. The transmit RF signal enters a BPF which eliminates undesired components generated in the IF-to-RF conversion. The filtered RF signal goes to the RF amplifier where it is amplified to the required level by an automatic level control (ALC) circuit. The amplified RF signal is then fed to the antenna through the Duplexer. The automatic transmitter power control (ATPC) function automatically varies the TX output power according to path conditions. Fading exerts heavy influences on propagation, causing the receive signal level at the opposite station to vary. The ATPC function operates by controlling the transmitter output power of the local station according to the variation of the received signal level at the opposite station. The received signal level variation at the opposite station is informed to the local station using the ATPC bits in the overhead. A constant transmit output power is maintained using the ALC function which is provided in the RF CKT module. The ALC circuit detect the transmit output power using a diode to obtain a DC voltage proportional to the transmit power. The gain of the RF amplifier is controlled inversely with this detected DC voltage to maintain the transmit output power within the specified limits.

2-1

2-2RF CKT IF:70 MHz MAIN IF AMP MIX MIX LO AMP RF AMP RX IF LEV CTRL AGC MPX RX IF LEV MON RX IF F DATA SYNTH IF ALM PD 1/2 SYNTH RF ALM ALM TRX RF IN/OUT

IF


(TO/FROM IDU)

CPUTX F DATA 1/2 20 MHz T PWR MON T PWR CTRL TX IF LEV MON TX IF LEV CTRL AGC AMP IF:850 MHz VCO PD VCO

RX LEV MON (EOW)

MIX

RF AMP

-40 V -40 VPS

+7 V -7 V

IF CKT

ROI-S04605

Fig. 2-1 Functional Block Diagram of the ODU

ROI-S04605


2.2 Receiver SectionThis part describes RF-to-IF conversion, IF-to-IF conversion and EOW signal modulation. An RF signal received from the antenna are filtered by the BPF and enters the first MIX. The first MIX mixes the applied RF signal with an local signal which is generated by a synthesized RF local oscillator to produce a first IF signal. Then, the IF signal is fed to the second MIX through the BPF which eliminates undesired components. The second MIX mixes the 1st IF signal with a local signal generated by a synthesized IF local oscillator to produce a 70 MHz IF signal. The 70 MHz IF signal passes a 70 MHz BPF which eliminates undesired components. The filtered 70 MHz IF signal goes to the main IF amplifier (MAIN IF AMP). The IF signal amplified by the MAIN IF AMP with automatic gain control (AGC) passes through the MPX circuit. The MPX circuit combines alarm, monitoring and response signals which are processed at the CPU in the ODU and the EOW signal with the IF signal. These signals are fed to the IDU from the MPX circuit.

2.3 Alarm and Control SectionAlarm and control functions of the ODU are described here. Fault detection circuits are provided in the ODU. The detected alarm signals are gathered into the CPU which processes the alarm signals to be sent to the IDU. Here, the TX PWR ALM signal is produced by the T PWR MON signal issued from the RF AMP circuit and the IF INPUT ALM signal is produced by the TX IF LEV MON signal issued from the IF amplifier with AGC AMP circuit. The RX LEV ALM is also produced by the RX IF LEV MON signal issued from the MAIN IF AMP circuit. The initiated alarm signals are sent to the IDU combined with the IF signal through the MPX circuit. Fault in the ODU can be monitored with alarm indicators on the IDU. The received RF signal level can be monitored at the RX LEV MON jack of the ODU by connecting the OW/RX LEV Monitor (optional) or digital voltmeter. In addition, the following operating condition of the ODU are monitored at the IDU by connecting the personal computer. Transmitter output power Received signal level DC voltage

2-3


ROI-S04605

The setting of the radio frequency and TX output power are performed from the IDU using personal computer. The TX output power can be controlled by a control command signal (T PWR CTRL) from the IDU. To communicate with the opposite station or with the IDU using orderwire, an optional OW/RX LEV monitor unit is necessary, the HEAD SET jack is provided on the OW/RX LEV Monitor. Therefore, connect the OW/RX LEV Monitor to the RX LEV MON jack on the ODU.Table 2-1 Alarm Indication and Reporting INITIATING MODULE ALARM INITIATED

ALARM CONDITION

IF input signal from IDU lost Transmit RF power decreases 3 dB from nominal APC loop of TX local oscillator or first local oscillator for RX unlocks RF CKT APC loop of second local oscillator for RX unlocks Receiver input level decreases by preset value from squelch level Communication between IDU and ODU is lost

IF INPUT ALM (*) TX PWR ALM (*) APC 1 ALM (*) APC 2 ALM (*) RX LEV ALM (*) OPERATION ALM (*)

Note: (*) 1 or 2 for channel No. in 1+1 system.

2-4 4 pages

ROI-S04605

OPERATION

3. OPERATIONThis chapter provides instructions for operating the ODU. Included are information on the interface terminals, interface jacks, controls, indicators, test jacks, equipment start-up, and equipment shut-down.

3.1 Interface Terminals and JacksThe equipment has interface terminals and jacks to connect with the associated equipment. These interface terminals and jacks are located as shown in Fig. 3-1 and are used as described in Table 3-1.

RF IN/OUT

(FG)RX LEV MON IFL FG

IF IN/OUT (FRONT VIEW) (REAR VIEW)

7-38 GHz Band ODU

13-38 GHz Band ODU

RF IN/OUT

(REAR VIEW)

7/8 GHz Band ODUFig. 3-1 Interface Terminal and Jack Locations

3-1

OPERATION

ROI-S04605

Table 3-1 Interface Terminals and Jacks TERMINAL DESCRIPTION

IF IN/OUT (N-P Connector)

TX IF signal input and RX IF signal output Danger: Do not disconnect the coaxial cable before turning off the power switch on the IDU.

RF IN/OUT (7/8 GHz : N-Female) (13/15 GHz : PBR-140) (18/23 GHz : PBR-220) (26 GHz : PBR-260) (38 GHz : PBR-320)

RF signal input/output from/to antenna

3-2

ROI-S04605

OPERATION

3.2 Controls, Indicators and Test JacksThe controls, indicators and test jacks of the ODU are shown in Fig. 3-2. These functions are described as follows.

RX LEV MON

IFL

FG

RX REV MON

Fig. 3-2 Controls, Indicators and Test Jacks for 7-38 GHz Band ODU

RX LEV MON jack: Gives access to monitor receive level voltage. Facilitate the transmission of EOW signal between IDU and ODU when the EOW/RX LEV Monitor and headset is connected. The X0818A EOW/RX LEV Monitor (optional) is used for operation and maintenance as shown in Fig. 3-3. The operation range of the OW/RX LEV Monitor is 0 C to +45 C and its functions are described as follows: METER: Indicates a DC voltage proportional to the receiving RF level. OW indicator: Lights when OW ON-OFF switch is set to ON. If the OW indicator is not lit even after setting the OW switch to ON, replace the battery (6F22(UB)/9V).

3-3

OPERATION

ROI-S04605

OW ON-OFF switch: Enables transmission of OW signal between IDU and ODU. The OW switch should be set to ON position to enable OW communication. VOL control: Enables to adjust receive OW voice level. RX LEV/OW IN jack: Provide a DC voltage for RX LEV monitoring and OW signal from / to the ODU. HEADSET jack: Permits communication between IDU and ODU when orderwire headset is connected.

1 0

2

3

4 5

METER

V

OW SWITCHPASOLINKANTENNA POINTING MONITOR OW ON OFF

OW INDICATOR

OW

VOL CONTROLVOL

BATTERY (6F22(UB)/9V)

RX LEV/OW IN JACKRX LEV/OW IN HEADSET

HEADSET JACK

Fig. 3-3 Controls, Indicators and Test Jacks of OW/RX LEV Monitor

3-4

Pasolink Digital microwave radio system Installation guide

NEC

PASOLINK installation procedure

Preparation workPreparation work is that work done before going to install any site. That work include the following steps:

Packing list check

During the packing list check, we shall determine which case include which items (materials)

Equipment and Materials Sorting

Sorting means assignment of equipment and materials to each site.

Equipment and materials delivery to site

The delivery to site should be by safe way, by care persons, and up to shelter or top of the building.

Notes: 1- The preparation work can be done for site by site or for all sites depending on company schedule And resources. 2- The next page include a detailed list of the equipment and materials to be sorted for each site.

January 2002

NEC


Equipment and Materials listThis list depending on the following conditions: 1- All sites will use one antenna configuration; 2- The equipment and materials for one site one direction only. Equipment list: 1- Antenna Check the frequency plan and the link calculation for the antenna diameter 2- Hybrid. 3- Two ODUs Check if the ODUs low or high frequency according to the frequency plan.

3- Brackets For the antenna and the hybrid

4- IF cable Prepare the required length of the IF cable

5- Connectors of the IF cable. Prepare four pieces of that connector 6- RD unit.(or suitable interface panel) 7- One IDU. 8- 2M cables and connectors Depending on, how many cables? how long? What is the required input impedance ? according to the system capacity and the impedance is 75 or 120 9- The power and grounding cables. 10- The installation materials Polts, nuts, tiewrap, terminals, tap, rupper tap.etc.

January 2002

NEC


Before going to site check listBefore going to any site, please be sure you completely prepared the following items: 1- The installation tools. 2- The test equipment ,materials ,and tools.( for test work only) 3- Site installation drawings. 4- All labels/stickers (hard and soft copy) 5- Frequency plan and system configuration documents. 6- Test procedure and test data sheets .( for test work only) 7- Confirm access to site/station. 8- Check the condition of the vehicle to be used. 9- Make sure you and your staff are in good conditions (physically) 10- Confirm the site/station entrance conditions. 11- Arrive to site/station safely.

Notes: 1- The installation tools (per team) include: Description Tap rule 50 M. Square 150mm x 100 mm. Scriber Level A-type 450 mm. Tester . Wrench set A-type 6-24 mm Adjustable wrench 150 mm Adjustable wrench 250 mm Socket wrench kit Screw driver (-) 150 Screw driver (+) NO.3 (150) Straight shank drill set (3.0 13.0 mm) Concrete drill set (4.8 18.0 mm) Drill bag Electric drill 6.5 mm (230 V) Hammer drill 19 mm (230 V) Point drill 6.4 mm (with holder) Point drill 6.4 mm Center punch 125 mm Hack saw frame Quantity 1 1 1 1 1 2 2 2 1 1 1 5 5 2 1 1 1 1 1 2

January 2002

NEC


Hack saw Description

20 Quantity 1 1 1 1 1 1 2 2 2 4 2 1 2 2 2 5 3 1

Hammer (450 g) Set file 5 EA/set(smooth) Flat file 250 mm (second cut) Flat file 250 mm (smooth) Crimping tool 1.25 8 sq. 5N18 Hydraulic crimping tool 14-150 sq. Soldering iron 60 W Holder for soldering iron Tip for soldering iron 60 W Hand tool kit Step ladder Power cable reel Tool box Box end wrench Adjustable wrench 375 mm Safety helmet Safety belt Oil can

2-The test equipment an tools include: Description Digital multimeter Lap top computer ( with the appropriate software) RS232 Cable. BER Test set (for 2M channels). 2M test chords. 2M insertion termination tool. Jumpering cable(wires) for the 2M channels loopback. Hand tools kit. Step ladder. Two adjustable wrench (150 mm,250 mm) Soldering iron 60 W. Crimping tool 1.25 8 sq. 5N18 Hydraulic crimping tool. Wrench set (6-24 mm). Box end wrench. Canvas bag. Power outlets extension. Power cable reel. Two safety belt. Black bag or equivalent for tools Quantity 1 1 2 2 4 1 N/A 1 1 2 1 1 1 1 1 1 1 1 2 1

January 2002

NEC


Installation Flow Chart The standard installation is summarized in this section. Included herein is information on typical installation work flow and installation guide for IDU installation, ODU installation, antenna (ANT) installation, waveguide connection and cable connections. The installation flow diagram is shown below.

Unpacking of IDU

Unpacking of ODU

Unpacking of Accessories

IDU Mounting

ODU Mounting

Cable Termination

Waveguide Connection

Frame Grounding

Cable Connections

Waterproof Protection

January 2002

NEC


Packing list for IDU,ODU,and ANT.:

ANTENNA DIRECT MOUNTING TYPE

1

TX High/ Low Sub- band A B C D CH____TX ___MHz RATE MB

3

2 5

4

6

NAME PLATE

MDP-( )MB-( )SERIAL No.__________ DATE________ , _______ WEIGHT 4kg(WITH OPTION) NEC Corporation (G2680) MADE IN JAPAN

WARNING -43V OUTPUT TURN OFF POWER BEFORE DISCONNECTING IF CABLE

January 2002

NEC


IDU Mounting: The installation procedure for the IDU is shown below. (a) Accessories Required Screwdriver (b) Procedure for Mounting and Dismounting (1) Mounting Mounting method of IDU is shown in Fig. 2-11. (2) Dismounting For dismounting IDU (if necessary), use the following procedure.Step Procedure

1 Hold the IDU so that it does not drop, and remove two screws each from both sides, 2 Take out the IDU from the 19-inch rack.STEP1: Align the IDU to the mount position on the 19-inch rack.

SCREW Flat washer

Screw

Flat washer

Step2. Fix each side of the IDU to the rack with the two screws(M5)

Step3. To mount the IDU in a 19-inch rack,allow space more than 200mm to the rear section and space for one unit to the top and bottom

More than one rack*

More than 200mm WALL

More than one rack unit*

Note: *when the environment temperature is mor then 40 c

January 2002

NEC


Mounting of IDU.

Mounting of ODU and ANT.: There are two diffwerent cases as follows: 1- The ODU is direct mounted to the antenna. 2- The ODU is mounted with a separate bracket.

According to which case you have ,you will follow the assempling procedure included with each antenna And you will know how to fix that ODU.

Note: In case two you have to install an additional RF cable between the ODU and the Antenna.

The tools required: Wrench, Monkey wrench or Torque wrench , and suitable screwdriver. ODU Demounting (if necessary): 1- Remove the four fixed bolts from the ODU. 2- Then demount the ODU.

January 2002

NEC


Frame Grounding: In mounting the IDU and odu, perform frame groungding. Location of frame grounding in each of IDU and ODU is shown below:

January 2002

NEC


Cable Termination: In the following, list of tools and material and the method for cable termination are described. The following cables are described for reference. BNC connector D-sub connector N-P connector Molex M5557-4R connector Note: Use ISO standardized screw (mm unit) for D-SUB connector. The necessary tools and materials are summarized as follow.Tools and Material List

1 Soldering Iron 2 Knife 3 Measure 4 Wire Stripper 5 Adjustable Wrench 6 Hand Crimping Tool (CL250-0012-2/CL250-0013-5)For D-Sub connector (57026-5000/57027-5000)For Molex connector 7 Solder

January 2002

NEC


Terminating Coaxial (Baseband Signal) Cable with BNC Connector:

January 2002

NEC


Terminating Coaxial (IF Signal) Cables with N-P Connector:

January 2002

NEC


January 2002

NEC


Terminating Power Supply Cables with Molex Connector:

January 2002

NEC


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