Download pdf - Pasolink Maintenance

PASOLINK/PASOLINK+

Maintenance Quick Reference

Rev. 02 : 2003.September

NEC Corporation

PASOLINK Maintenance Quick Reference

NEC Corporation

Table of Content

1 INTRODUCTION ...........................................................................................................1

1.1 Purpose ....................................................................................................................................1

1.2 Reference Manuals..................................................................................................................1

2 MAINTENANCE SERVICE OVERVIEW .......................................................................2 2.1.1 Service Summary ..............................................................................................................2 2.1.2 Precautions........................................................................................................................2 2.1.3 Test Equipment .................................................................................................................2

3 PREVENTIVE MAINTENANCE ....................................................................................3

3.1 Frequency of Preventive Maintenance..................................................................................3

3.2 Preventive Maintenance Procedures .....................................................................................4 3.2.1 Radio Equipment ..............................................................................................................4 3.2.2 Aerial Equipment ..............................................................................................................6 3.2.3 Interface Cables and Connectors.......................................................................................7

3.3 Preventive Maintenance Flowchart.......................................................................................8

4 CORRECTIVE MAINTENANCE....................................................................................9

4.1 Corrective Maintenance Procedures .....................................................................................9 4.1.1 Radio Equipment ..............................................................................................................9 4.1.2 Aerial Equipment ............................................................................................................13 4.1.3 Interface Cables and Connectors.....................................................................................14

4.2 Corrective Maintenance Flowchart.....................................................................................15

4.3 List of Alarms ........................................................................................................................16

APPENDIX A PREVENTIVE MAINTENANCE CHECKLIST.............................................34

APPENDIX B SITE INVENTORY DATA RECORD SHEET...............................................39

PASOLINK Maintenance Quick Reference 1

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1 Introduction

1.1 Purpose This document is designed as a quick reference guide for maintenance service of the PASOLINK/PASOLINK+ system.

1.2 Reference Manuals The following list of manuals is recommended to be referenced during maintenance of the PASOLINK equipment.

No. Title Manual No. 1 PASOLINK Installation Manual (1+0

System) ROI-S03508

2 PASOLINK Instruction Manual ROI-S04614 3 PASOLINK+ Instruction Manual

(1+0/1+1 System) ROI-S04755

4 Pasolink Network Management

Terminal Operation Manual ROI- S04060

5 Pasolink Network Management System

Operation Manual, WindowsNT Version

ROI-S04067


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2 Maintenance Overview

2.1.1 Summary There are two types of Maintenance defined in the PASOLINK/ PASOLINK+ system, namely, preventive (periodic) maintenance and corrective maintenance. The customer is recommended to perform preventive maintenance according to the instruction in Chapter 3 “Preventive Maintenance” of this manual. Upon discovery of fault in the system, the customer should follow the corrective maintenance procedures detailed in Chapter 4 “Corrective Maintenance” of this document.

2.1.2 Precautions Danger: Around –43V DC power (Depends on IF cable length) is superimposed on the center conductor of the coaxial cable between the IDU and ODU. Connecting a measurement set may damage that set. Touching the coaxial cable core may cause electrical shock. Caution: To protect the internal circuits against electrostatic discharge, engineers are requested to wear the wristband and connect it to the frame ground for Electrostatic Protection (ESP) before detaching the top cover. (a) Before beginning maintenance, notify the opposite station that

maintenance is about to begin. (b) After equipment starts-up, allow the equipment to warm up for at

least 30 minutes. (c) During maintenance, set the IDU to maintenance mode using a

PNMT according to the user manual. (d) After completing the maintenance operation, restore all connections

to normal.

2.1.3 Test Equipment The test equipment and special accessories described in Table A are required for system maintenance. If recommended test equipment and accessories are not available, equivalents may be used.

Table-A Test Equipment and Accessories Required

Test Equipment/Accessory Remarks Q’ty Req’d Headset - 1 each Personal Computer (PC) with RS-232C cable for IDU

PNMT software installed 1 set

Touch-up paint For antenna 1 set

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Precautions

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Before beginning maintenance, notify the opposite station that maintenance is about to begin. (b) After equipment starts-up, allow the equipment to warm up for at least 30 minutes. (c) During maintenance, set the IDU to maintenance mode using a PNMT according to the user manual. (d) After completing the maintenance operation, restore all connections

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(a) Before beginning maintenance, notify the opposite station that maintenance is about to begin. (b) After equipment starts-up, allow the equipment to warm up for at least 30 minutes. (c) During maintenance, set the IDU to maintenance mode using a PNMT according to the user manual. (d) After completing the maintenance operation, restore

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Test Equipment

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Test Equipment/Accessory Remarks Q’ty Req’d Headset - 1 each Personal Computer (PC) with RS-232C cable for IDU PNMT software installed 1 set Touch-up paint For antenna 1 set


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Torque wrench, spanner, screwdrivers, tape, vinyl tape

For fixing point 1 set

Self bounding tape, vinyl tape For waterproof treatment 1 set

3 Preventive Maintenance This section describes the maintenance work that should be performed on a periodical basis in order to maintain the system at its highest quality. It should be performed by fully qualified personnel to ensure proper performance of the system and safety at the operation site.

3.1 Frequency of Preventive Maintenance To ensure continuously satisfactory operation of the system, perform the preventive maintenance on a timely basis recommended as follows. 1st: Three (3) months after the start of operation. 2nd: Twelve (12) months after the start of operation. 3rd and after: Every one (1) year. The customer is recommended to make use of Preventive Maintenance Checklist from Appendix A of this document for recording purpose.

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3 Preventive Maintenance

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Frequency of Preventive Maintenance

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1st: Three (3) months after the start of operation. 2nd: Twelve (12) months after the start of operation. 3rd and after: Every one (1) year.


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3.2 Preventive Maintenance Procedures

3.2.1 Radio Equipment

1. Visual inspection. Visually inspect ODU and IDU for surface damage or abnormal appearance and check looseness of bolts and nuts. Visually inspect ODU and IDU for surface damage or abnormal appearance and check looseness of bolts and nuts.

2. Meter reading a-1) Connect the PNM Terminal (PC) to the LA PORT of the IDU

using RS-232C cable. (In case on PASOLINK) a-2) Connect the PNM Terminal (PC) to the PNMT PORT of the IDU

using RS-232C cable. (In case on PASOLINK) b) Set the PNMT to show ODU monitoring data according to the

procedure in the PNMT user manual. c) When the system is in normal working condition, result shall be

the values shown in Table B below.

Table. B Meter Reading from IDU (PASOLINK V3)

Check Item Allowable Range ODU primary power supply voltage

3:5 to 4.5V DC (35 to 45V DC) (Depending on cable length between ODU and IDU)

Transmitter Power

0 to 4.6 V DC Relative to the recorded value in the site inventory data record (see Appendix B)

Receiving Level 0.2 to 4.5V DC (depending on received signal level)

Table. C Meter Reading from IDU (PASOLINK V4)

Check Item Allowable Range Transmitter Power

+0 to 4.6 V DC Relative to the recorded value in the site inventory data record (see Appendix B)

Receiving Level 0.8 to 4.4V DC (depending on received signal level)

Table. D Meter Reading from IDU (PASOLINK+)

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Radio Equipment

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1. Visual inspection.

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2. Meter reading


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3. Check configurations a) Check the condition setting of the IDU according to the

procedure in the PNMT user's manual. b) Confirm if the condition setting is appropriate according to the

site inventory data. c) The latest configuration file shall be uploaded and stored. Also,

the Equipment Configuration Parameter shall be recorded and filed as site inventory data record.

Note: A copy of Site Inventory Data Record sheet is provided in Appendix B.

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Check configurations

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3. Check


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3.2.2 Aerial Equipment

1. At first perform visual inspection. Visually inspect antenna and associated mounting structures and Hybrid Combiner (if applicable) for surface damage or abnormal appearance.

2. Check for loose bolt connections. Make sure that all bolts and nuts

are tightened to the specified torque. 3. Rust prevention

a) Repainting should be carried out every two years to maintain high corrosion resistance and appearance of the antenna. However the period may change if rusting or exfoliation occurs earlier.

b) For antenna, clean first by removing oil and dirt completely with solvent and then washing with water. Then apply top coat with ally alkyd enamel diffusive paint (belcoat No.5500) or equivalent.

c) For hot dip galvanized parts of the steel structure, first completely remove rust, dirt, etc. on the position causing exfoliation of plating. Then apply Amercoat No.160 with a brush or sprayer (Thickness: more than 70 microns) manufactured by Amercoat (AMERCOAT EUROPE). Note that “more than 70 microns” is roughly amount to one (1) or two (2) times of paint brushing, or two (2) or three (3) times of paint spraying.

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Equipment

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1. At first perform visual inspection.

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2. Check for loose bolt connections.

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3. Rust prevention


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3.2.3 Interface Cables and Connectors

1. At first perform visual inspection. Visually inspect the following items for surface damage or abnormal appearance.

i) The connectors of jumper cable between ODU and IDU ii) Jumper cables iii) Frame ground of ODU iv) Grounding of feeder v) IF cable connector vi) Power supply cable and connector vii) Traffic IN/OUT cable and connectors viii) Alarm cable and connectors ix) Service Channel cables and connector x) NMS cable and connector

2. Check for loose bolt connections. Make sure that the jumper coaxial

cables between ODU and IDU are firmly fixed, and all bolts and nuts are tightened.

3. Check waterproof treatment. Check if waterproof treatment is in

good condition on connection point of the jumper coaxial cable at ODU, splicing points of coaxial cable, and connection points of grounding cables.

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1. At first perform visual inspection.

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2. Check for loose bolt connections.

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3. Check waterproof treatment.


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3.3 Preventive Maintenance Flowchart The preventive maintenance procedures are outlined here in a form of flowchart for quick reference.

START

Radio Equipment Aerial Equipment Interface Cable &

Connector

Rx Signal level

Visual inspect ion?

Check loose connect ion

Rust prevent ion

Go to Correct ive

Maint enance Procedures

END

Check waterproof

Visual inspect ion?

Check meter reading

ODU P S V

Tx Power

Check configurat ion

Visual inspect ion?

Check loose connect ion

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3.3 Preventive Maintenance Flowchart

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START ive Maintenance Procedures

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NEC Corporation START Radio Equipment Rx Signal level Go to Correct ive Maintenance Procedures Visual inspect ion? Check meter reading ODU PS V Tx Power Check configurat ion

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START Radio Equipment Aerial ive Maintenance Procedures

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START Radio Equipment Aerial Equipment ive Maintenance Procedures

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START Radio Equipment Aerial Equipment Visual inspect ion? ive Maintenance Procedures

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START Radio Equipment Aerial Equipment Interface Cable & Connector Visual inspect ion? Check loose connect ion Rust prevent ion ive Maintenance Procedures END Check wat Visual inspect ion? Check loose connect ion

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START Radio Equipment Aerial Equipment Interface Cable & Connector Visual inspect ion? Check loose connect ion Rust prevent ion ive Maintenance Procedures END Check wat erproof Visual inspect ion? Check loose connect ion


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4 Corrective Maintenance Corrective maintenance covers fault isolation, replacement and alignment. The fault isolation procedure describes isolating equipment-level faults. Therefore, if an ODU or IDU is faulty, it should be replaced with a spare and aligned. During corrective maintenance, carefully observe the precautions given in Section 2.1.2 of this document until alignment is completed.

4.1 Corrective Maintenance Procedures


1. Confirmation of alarm and / or malfunction

a) Confirmation of alarms, which are identified through: • Red alarm LED indication on the IDU or • Notification from external equipment

During alarm conditions, red alarm LEDs on the IDU are lit except when there is a power supply failure. Faults can be isolated using the LED indications. Table C-l provides information for isolating faults at a station.

Table C-l Fault Isolation by LED Indication on IDU

LED Indication Fault Location IDU IDU ODU ODU

b) Confirmation of malfunction using PNMS or PNMT.

2. Identify faulty equipment by observing PNMS and/or alarm indication on IDU, identify the station and equipment where alarm and/or malfunction occurred.

3. Prepare necessary test equipment and accessories, PC and

connection cable and Spare Equipment for replacement.

4. Pinpoint the fault equipment as follows. a) Check individual alarm and status condition of ODU/IDU by

using the PNMT. Refer to the PNMT user's manual for detailed procedure for monitoring.

b) Pinpoint the origin of fault with help of the instruction manual of the equipment.

c) If alarm and/or malfunction is due to equipment, go to next step. If not, go to next step 5.

5. Replacement of.

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4.1 Corrective Maintenance Procedures

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NEC 1. Confirmation of alarm and / or malfunction


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a) IDU. The Manufacturer does not recommend replacement of modules within IDU. If a fault is identified with the IDU, the complete unit should be replaced with a spare. The faulty unit is to be returned to the factory for repair. The following actions shall be performed on the new IDU before connection to ODU. i) Downloading of the appropriate configuration file*.

*Note: The latest configuration file stored for the faulty IDU shall be used.

ii) Set the Equipment Configuration for the station according to the site inventory record. At least, TX/RX Frequency (CH) TX Attenuation, Bit Rate and Frame ID shall be set.

When replacing with a new unit, the start up procedure should be followed. Refer to the equipment instruction manual for details.

b) ODU. Before replacing the ODU with a spare, the spare must be set to meet the required functions. Provided here are procedures for replacing the ODU with spares after fault isolation and/or presetting. Removing i) Turn off the POWER switch on the front panel of the IDU. ii) Loosen tightening rings of the IF IN/OUT (N) on the ODU

by turning them counter-clockwise. iii) For waveguide connector type of ODU, to remove the

waveguide from the RF IN/OUT, remove the four waveguide fixing screws using a screwdriver. Note: Be careful not to damage the O-ring between the waveguide and ODU.

iv) Lessen four screws (M6) on the ODU. v) Remove the ODU from mounting bracket. vi) Replace ODU with a spare, taking care when handling the

waveguide contact surface. Remounting vii) When H polarization is required, rotate the ODU so as to

go up the plate marked with H. viii) When V polarization is required, rotate the ODU so as to go

up the plate marked with V. ix) Confirm if the O-ring is to be placed in the original position

properly. x) Put new ODU on the mounting bracket and align the bolts

of the ODU with the bolt holes of the mounting bracket. xi) Tighten the four screws (M6) on the ODU using a suitable

screwdriver. xii) Connect coaxial cable between the IF IN/OUT jacks on the

IDU and ODU.


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Note: After cable connection, the connector part shall be wrapped by self-bonding tape for waterproof.

xiii) For waveguide connect type of ODU, connect waveguide to RF IN//OUT with four screws using a suitable screwdriver.

xiv) Confirm that the ODU is firmly installed on the mounting bracket.

xv) Confirm the cable routing and the cable has been fastened properly.

xvi) Turn on the POWER switch on the front of the IDU. Note: Allow equipment to warn warm at least several minutes.

6. Alignment. After replacing ODU or IDU with spares, the ODU or

IDU must be aligned as follows. Caution: After replacing any unit with a spare, allow equipment to warm before at least several minutes before alignment. a) Verify that connector is firmly connected. b) Turn on the power switch on the IDU. c) Connect tester (digital multi-meter) to LINE IN (-) and LINE IN

(+) terminals above the power cable unit of the IDU. Confirm that the meter indication is described in Table C-2.

Table C-2 Meter Reading

Check Item Allowable +/- 20.0 to +/-60.0 V DC

(PASOLINK)

LINE V +/- 36.0 to +/- 60 VDC

(PASOLIN+)

d) Referring to para. B), confirm that the meter indication is normal.

ODU e) Referring to the procedure for condition setting of ODU and IDU

described in the equipment instruction manual, perform radio frequency and TX output power setting for the ODU.

IDU f) Referring to the procedure for condition setting of ODU and IDU

described in the equipment instruction manual, perform each item setting for the IDU.

g) Connect the PNMT to the LA PORT of the IDU using an RS-232C cable. (PASOLINK)

g-2) Connect the PNMT to the PNMT port of IDU using an RS-232C cable (PASOLINK+)

h) Confirm if the Equipment Configuration data stored in the

equipment is appropriate. i) Record the Equipment Configuration data as a station inventory

data.


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j) The faulty ODU and/or IDU shall be returned to the Supplier for repair.


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1. Confirm malfunction. Make sure the observed malfunction is due aerial equipment.

2. Antenna Orientation. If malfunction is due to drift of antenna

direction, re-orientation of antenna should be performed. a) At each station, remove the cap from the OW/RX LEV MON jack

on ODU. b) Connect cables with F-type plug for Digital Multi-meter to RX

LEV MON jack. c) Adjust azimuth and elevation angle for the antenna direction

alternately so that the voltage measuring value becomes maximum.

d) Disconnect digital multi-meter from the RX LEV MON jacks. e) Reconnect the cap removed in step a) above.

Note In case of PASOLINK+, an Antenna Alignment Mode which extend the range of RX LEVEL MON is available. The detailed procedure shall be referred as per the instruction manual of PASOLINK+.

3. Tighten all bolts and nuts to the specified torque. (refer to

installation instruction of antenna).

4. If any rust found, following action should be made. a) For antenna, clean first by removing oil and dirt completely with

solvent and then washing with water. Then apply top coat with ally alkyd enamel diffusive paint (belcoat No.5500) or equivalent.

b) For hot dip galvanized parts of the steel structure, first completely remove rust, dirt, etc., on the position causing exfoliation of plating. Then apply Amercoat No.160 with a brush or sprayer (Thickness: more than 70 microns) manufactured by Amercoat (AMERCOAT EUROPE).

Note that “more than 70 microns” is roughly amount to one (1) or two (2) times of paint brushing, or two (2) or three (3) times of paint spraying.

5. Replacement. If any surface damage of abnormal appearance is

observed on aerial equipment, it must be replaced with spare according to owner's decision.


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1. Check if there is any malfunction along the interface cables.

2. If any surface damage or abnormal appearance is found on the following items, replace it with new one according to owner's decision. Items to be inspected are: a) The connectors of jumper cable between ODU and IDU b) Jumper cables c) Frame ground of ODU d) Grounding of feeder e) IF cable connector f) Power supply cable and connector g) Traffic IN/OUT cable and connectors h) Alarm cable and connectors i) Service channel cables and connector j) NMS cable and connector

3. If any loose connection found, tighten and make sure all connections

are fixed firmly.

4. If any water ingress or deterioration of waterproof treatment is found, waterproof treatment by self-bonding tape shall be replaced with new one.


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4.2 Corrective Maintenance Flowchart The corrective maintenance procedures are outlined here in a form of flowchart for quick reference.

START

Radio Equipment

Aerial Equipment Interface Cable & Connector

Alarm observed by prvent ive

maintenance

Ident ify the faulty equipment

Prepare necessary spare part s, t est equipment and

instruct ion

P inpoint the faulty equipment with help

of inst ruct ion manual

Due to equipment

Perform check to restore normal

operat ion

Replace the fault part s with spare

Malfuct ion observed

Antenna direction Any

damage

Make antenna orientat ion according to inst ruction manual

Tighten bolts and nut s to the specific torque

Any rust?

Clean and apply touch up paint

Any surface

damange?

Replace damaged part if necessary

Return faulty ODU / IDU for analysis END

Malfunct ion observed

Tighten the connectors

Any loose connect ion

Replace damaged part if necessary

Any water ingress?

Replace wat erproof treatment


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4.3 List of Alarms A list of alarms generated by PASOLINK/PASOLINK+ system is described as follow. The reasons for the alarms and the action to take to correct the faults are also included. Note that these alarms appear in the Active Alarm window of the PNMS (PASOLINK Network Management System) software when faults occur. Numbers (1) through (20) in the “Items to Check” column are in reference to PASOLINK equipment in Figure 1 through 3 at the back of the list.

Table.1 List of check items for alarm item (for PASOLINK 1 + 0)

Alarm Description Equipment where Alarm is from

Alarm Items

Items to Check Possible Cause of Failure or Action to Take

Loss of input data stream from DTE <Note 1> IDU

a) Check DTE DTE

1 INPUT -CH 01-16

b) Check data input cable and connector failure (short-circuit). (1)

Data input cable and connector failure

AIS (all "1") is received from DTE <Note 1> IDU<Note6>

a) Check DTE DTE

2 AIS RCVD-CH 01-16

b) Check data input cable and connector. (1) Data input cable and connector failure

AIS (all "1") is transmitted to DTE <Note 1> IDU<Note6>

a) Check “RX LEVEL” at item 25, if on>> Antenna system or natural fading;

b) Check “RX CLK LOSS 1-4” at item 14

c) Check “FRAME ASYNC” at item 17

3 AIS SEND-CH 01-16

d) Check “DEM” at item 22. If above item on and RX Level normal>>

Replace IDU

Loss of output data stream to DTE <Note 1> IDU

a) Check data output cable and connector failure (short-circuit). (2)

Data output cable and connector failure

4 BP OUTPUT-CH 01-16

b) Check 2M INTFC of IDU (data type, speed, etc).

IDU

Loss of Way Side traffic input <Note 2,3> IDU 5 WS INPUT

Check wayside card. (3) Wayside card failure

AIS for Way Side is received <Note 2,3> IDU<Note6> 6 WS AIS RCVD

a) Check wayside card. (3) Wayside card failure


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b) Check wayside data input cable and connector. (4)

Wayside data input cable and connector failure

c) Check DTE (data type, speed, etc) DTE

AIS for Way Side is transmitted <Note 2,3> IDU<Note6> 7 WS AIS SEND


Way Side output loss <Note 3> IDU

a) Check wayside data output cable and connector. (4)


8 WS BP OUTPUT

b) Check DTE DTE

Loss of 34M input data stream from DTE <Note 1>

IDU

a) Check data input cable and connector. (1) Data input cable and connector failure

9 34M INPUT

b) Check DTE (data type, speed, etc) DTE

Loss of 34M output data stream to DTE <Note 1> IDU

a) Check data output cable and connector. (2) Data output cable and connector failure

10 34M OUTPUT

b) Check DTE (data type, speed, etc) DTE

AIS (all "1") is transmitted to DTE <Note 1> IDU

a) Check “RX LEVEL” at item 25, if on>> Antenna system or natural fading



11 34M AIS SEND

d) Check “DEM” at item 22. If above item on,>>

Replace IDU

AIS (all "1") is received from DTE <Note 1> IDU

a) Check DTE (data type, speed, etc) DTE

12 34M AIS RCVD

b) Check data input cable and connector failure. (1)


INTFC Transmitter Clock Loss <Note 1> IDU 13 TX CLK LOSS 1-4

a) Check 2M interface card. (5) 2M interface card failure

INTFC Receiver Clock Loss <Note 1> IDU



14 RX CLK LOSS 1-4


Replace IDU


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d) Check “DEM” at item 22. If above item on and RX level normal>>

Loss of TX DATA at INTFC <Note 1> IDU

a) Check data rate setting using LCT or PNMT/S.

IDU data rate setting

15 MUX 1-4

b) Check 2M interface card. (5) 2M interface card failure

Loss of TX DATA at TX DPU IDU


IDU Data rate setting

16 TX DPU


Frame Asynchronous at RX DPU IDU


17 FRAME ASYNC

b) Check Frame ID using LCT or PNMT/S IDU setting

BER > 10E-3 IDU


18 HIGH BER

b) Check opposite site equipment Opposite site

BER > 10E-6 IDU


19 LOW BER


Degradation of BER (10E-3/-4/-5/-6 selectable)

<This alarm is used for triggering of AIS injection>

IDU


20 BER


MOD 850MHz PLL APC loop is out of lock IDU

a) Check atmosphere temperature Improve air flow

21 MOD

b) If continues MOD alarm on Replace IDU

Carrier Asynchronous IDU


22 DEM

b) Check atmosphere temperature Improve air flow

Communication failed between ALM control card of IDU and PMC

IDU 23 PMC-ALM CONT LINK

a) Check PM Card. (6) PM card failure


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CPU communication error between IDU and ODU

IDU 24 OPR ALM

a) Check IF cable and connector (17) IF cable and connector failure

Occurred when transmitter output power is decreased

<Activated when 3 to 5dB lower than preset value>

ODU

a) Check atmosphere temperature Improve ODU temperature

25 TX POWER

b) If continuous alarm on Replace ODU

Receiving level is decreased

<Activated when less than -95dBm+/-5dB>

ODU

a) Check “RX LEVEL”, if lower>> Antenna system or natural fading

26 RX LEVEL

b) Check channel number of own site and opposite site

Correct channel number

ＲＦ 1st local ＡＰＣ loop out of lock ODU


27 TX APC

b) If continues alarm on Replace ODU

ＲＦ２nd local ＡＰＣ loop out of lock ODU


28 RX APC


Occurred when TX IF input level is decreased

<Activated when less than approx. -63dBm>

ODU

a) Check IF cable and connector. (7) IF cable and connector failure

29 IF INPUT

b) Check IF cable length and loss. (7) IF cable length

Number of one second periods with one or more errored blocks

PNMS

a) Check “RX LEVEL” at item 25, if lower>> Antenna system or natural fading

b) Check fading margin Link design condition

30 ES THRESHOLD (15min)

c) Check interference Other near radio station

31 SES THRESHOLD (15min) Number of one second periods which contain 30% or more errored blocks during available time only

PNMS


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Number of one second periods which contain 30% or more errored blocks during a day

PNMS



32 SES THRESHOLD (day)


Unavailable second PNMS



33 UAS THRESHOLD (15min)


Unavailable second PNMS



34 UAS THRESHOLD (day)


Number of errored blocks as part of SES PNMS



35 BBE THRESHOLD (15min)


Number of errored blocks as part of SES PNMS



36 BBE THRESHOLD (day)


Connection loss of AUX input interface PNMS 37 INPUT-1to 6 (or NAME)

Check PM Card. (6) PM card failure

38 Loss of AUX relay output interface PNMS


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OUTPUT-1 to 4 (or NAME) Check PM Card. (6) PM card failure

Connection failed between PMC and PNMS PNMS


b) Check Link connection. (8) Link failure

39 PNMS LINK

c) Check PNMS cables. (9) PNMS cable failure

<Note 1> Unused channel/interface is masked according to the bit rate.

<Note 2> Way Side alarm inhibit function is applicable. Setting this function inhibits the issuance of alarm.

<Note 3> This item is masked in case of no WS system.

<Note 4> This item is masked except for 1 x 34 MB system.

<Note 5> The summarization of alarm outputs is fully user programmable; the table only shows the factory settings.

<Note 6> ALM LED does not light by the factory settings. It is changeable to light by the settings

Table 2 List of check items against alarm item (for PASOLINK 1 + 1)


Alarm Items

Items to Check Possible Cause of Failure or

Action to Take Loss of input data stream from DTE <Note 1>

IDU TX No.1/No.2

a) Check DTE IDU

1 INPUT -CH01-16

b) Check data input cable and

connector failure (short-circuit) (1)


AIS (all "1") is received from DTE <Note 1>

IDU <Note6>

TX No.1/No.2 <Note6>

a) Check DTE (data type, speed, etc)

DTE

2 AIS RCVD-CH01-16

b) Check data input cable and connector. (11)


AIS (all "1") is transmitted to DTE <Note 1>

IDU <Note6>

RX No.1/No.2 <Note6>

a) Check “RX LEVEL” at item 48,49, if on>>

Antenna system or natural fading

Check “RX CLK LOSS 1-4” at item 22

3 AIS SEND-CH01-16

b) Check “FRAME ASYNC” at item 31, 32

Replace IDU


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c) Check “DEM” at item 41, 42. If above item on and RX Level normal>>

Loss of output data stream to DTE <Note 1>

IDU RX No.1/No.2

a) Check data output cable and connector failure(short-circuit)(12)


4 BP OUTPUT-CH01-16

b) Check 2M INTFC setting of IDU (data type, speed, etc)

IDU

Loss of Way Side traffic input <Note 2,3>

IDU TX No.1/No.2 5 WS INPUT


AIS for Way Side is received <Note 2,3>

IDU <Note6>

TX No.1/No.2 <Note6>

a) Check wayside card. (13) Wayside card failure

b) Check wayside data input cable and connector. (14)


6 WS AIS RCVD

c) Check DTE (data type, speed, etc)

DTE

AIS for Way Side is transmitted <Note 2,3>

IDU <Note6>


7 WS AIS SEND


Way Side output loss <Note 3> IDU RX No.1/No.2

a) Check wayside data output cable and connector. (14)


8 WS BP OUTPUT

b) Check DTE DTE

Loss of input data stream from DTE <1x34MB>, <Note7>

IDU TX No.1

a) Check data input cable and connector. (11)


9 34M INPUT (No.1)

b) Check DTE (data type, speed, etc)

DTE

Loss of input data stream from DTE <1x34MB>, <Note7>

IDU TX No.2

a) Check data input cable and connector. (11)


10 34M INPUT (No.2)


DTE

AIS is received from DTE <1x34MB>, <Note7>

IDU <Note6>

TX No.1<Note6> 11 34M AIS RCVD (No.1)


DTE


NEC Corporation



AIS is received from DTE <1x34MB>, <Note7>

IDU <Note6>

TX No.2<Note6>


DTE

12 34M AIS RCVD (No.2)



AIS is transmitted to DTE <1x34MB>, <Note7>

IDU <Note6>


a) Check “RX LEVEL” at item 48,49, if lower>>



c) Check “FRAME ASYNC” at item 31, 32

13 34M AIS SEND (No.1)

d) Check “DEM” at item 41, 42. If above item on and RX Level normal>>

Replace IDU

AIS is transmitted to DTE <1x34MB>, <Note7>

IDU <Note6>


a) Check “RX LEVEL” at item 48,49, if on>>



c) Check “FRAME ASYNC” at item 31, 32

14 34M AIS SEND (No.2)


Replace IDU

Loss of output data stream to DTE <1x34MB>, <Note7>

IDU RX No.1

a) Check data output cable and connector. (12)


15 34M BP OUTPUT (No.1)


DTE

Loss of output data stream to DTE <1x34MB>, <Note7>

IDU RX No.2

a) Check data output cable and connector. (12)


16 34M BP OUTPUT (No.2)


DTE

17 TX DPU (No.1) Loss of TX DPU clock to 2M(8M) INTFC

IDU TX No.1


NEC Corporation

a) Check data rate setting using LCT or PNMT/S



Loss of TX DPU clock to 2M(8M) INTFC

IDU TX No.2



18 TX DPU (No.2)


Loss of RX DPU clock to 2M(8M) INTFC

IDU RX No.1



19 RX DPU (No.1)


Loss of RX DPU clock to 2M(8M) INTFC

IDU RX No.2



20 RX DPU (No.2)


INTFC Transmitter clock loss <Note 1>

IDU TX No.1/No.2



21 TX CLK LOSS 1-4


INTFC Receiver clock loss <Note 1> IDU RX No.1/No.2


Antenna system or natural fading;

b) Check “RX CLK LOSS 1-4” at item 22.

c) Check “FRAME ASYNC” at item 31, 32.

22 RX CLK LOSS 1-4


Replace IDU

34M INTFC Transmitter clock loss <Note 4>, <Note7>

IDU TX No.1



23 TX CLK LOSS (No.1)

b) Check connector between MD and SW (behind MD unit). (18)

Connector failure between MD and SW

34M INTFC Transmitter clock loss <Note 4>, <Note7>

IDU TX No.2 24 TX CLK LOSS (No.2)




NEC Corporation



34M INTFC Receiver clock loss <Note 4>, < Note7>

IDU RX No.1



25 RX CLK LOSS (No.1)



34M INTFC Receiver clock loss <Note 4>, <Note7>

IDU RX No.2



26 RX CLK LOSS (No.2)



Loss of TX DATA from INTFC at TX DPU <Note 1>

IDU TX No.1



27 MUX 1-4(No.1)


Loss of TX DATA from INTFC at TX DPU <Note 1>

IDU TX No.2



28 MUX 1-4 (No.2)


Loss of TX DATA to MOD at TX DPU IDU TX No.1



29 TX DPU (No.1)


Loss of TX DATA to MOD at TX DPU IDU TX No.2



30 TX DPU (No 2)


Frame Asynchronous at RX DPU IDU RX No.1

a) Check “RX LEVEL” at item 48,49 if lower>>


31 FRAME ASYNC (No.1)

b) Check Frame ID using LCT or PNMT/S

IDU setting

Frame Asynchronous at RX DPU IDU RX No.2



32 FRAME ASYNC (No.2)

b) Check Frame ID using LCT or PNMT/S

IDU setting

33 HIGH BER (No.1) BER > 10E-3 IDU RX No.1


NEC Corporation




BER > 10E-3 IDU RX No.2 a) Check “RX LEVEL” at item 48,49

if lower>> Antenna system or natural fading

34 HIGH BER (No.2)


BER > 10E-6 IDU RX No.1 a) Check “RX LEVEL” at item 48,49

if lower>> Antenna system or natural fading

35 LOW BER (No.1)


BER > 10E-6 IDU RX No.2



36 LOW BER (No.2)


Degradation of BER (10E-3/-4/-5/-6 selectable) <This alarm is used for triggering of AIS injection>

IDU RX No.1



37 BER (No.1)


Degradation of BER (10E-3/-4/-5/-6 selectable) <This alarm is used for triggering of AIS injection>

IDU RX No.2

a) Check “RX LEVEL” at item 48,49 if on>>


38 BER (No.2)


MOD 850MHz PLL APC loop is out of lock

IDU TX No.1


39 MOD (No.1)

b) If continues MOD alarm on Replace MD (No.1)

MOD 850MHz PLL APC loop is out of lock

IDU TX No.2


40 MOD (No.2)

b) If continues MOD alarm on Replace MD (No.2)

Carrier asynchronous IDU RX No.1

a) Check “RX LEVEL” at item 48,49 if on>>


41 DEM (No.1)


Carrier asynchronous IDU RX No.2 42 DEM (No.2) a) Check “RX LEVEL” at item 48,49

if on>> Antenna system or natural fading


NEC Corporation


Communication fail between ALM control card of IDU and PMC

IDU SW 43 PMC-ALM CONT LINK



IDU TX/RX No.1 44 OPR ALM (No.1)

a) Check IF cable and connector. (17)

IF cable and connector failure


IDU TX/RX No.2 45 OPR ALM (No.2)



Transmitter output power decrease <Activated when 3 to 5dB lower than preset.>

ODU TX No.1

a) Check atmosphere temperature

Improve ODU temperature

46 TX POWER (No.1)

b) If continues alarm on Replace ODU Transmitter output power decrease <Activated when 3 to 5dB lower than preset.>

ODU TX No.2


47 TX POWER (No.2)

b) If continues alarm on Replace ODU Receiving level decrease <Activated when less than -95dBm+/-5dB)

ODU RX No.1


48 RX LEVEL (No.1)



Receiving level decrease <Activated when less than -95dBm+/-5dB)

ODU RX No.2


49 RX LEVEL (No.2)



RF 1st local APC loop out of lock ODU TX No.1

a) Check atmosphere temperature Improve ODU temperature 50 TX APC (No.1)

b) If continues alarm on Replace ODU RF 1st local APC loop out of lock ODU TX No.2

a) Check atmosphere temperature Improve ODU temperature 51 TX APC (No.2)

b) If continues alarm on Replace ODU RF 2nd local APC loop out of lock ODU RX No.1 52 RX APC (No.1)



NEC Corporation

b) If continues alarm on Replace ODU RF 2nd local APC loop out of lock ODU RX No.2

a) Check atmosphere temperature Improve ODU temperature 53 RX APC (No.2)

b) If continues alarm on Replace ODU TX IF input level decrease <Activated when less than approx. -63dBm>

ODU TX No.1



54 IF INPUT (No.1)

b) Check IF cable length and loss. (17)

IF cable length

TX IF input level decrease <Activated when less than approx. -63dBm>

ODU TX No.2



55 IF INPUT (No.2)

b) Check IF cable length and loss. (17)

IF cable length

CPU communication error between MD and SW

SW/MDP TX/RX No.1 56 MDP CPU (No.1)

Check connector behind MD. (18) Connector failure behind MD Unit

CPU communication error between MD and SW

SW/MDP TX/RX No.2 57 MDP CPU (No.2)

Check connector behind MD. (18) Connector failure behind MD Unit

Number of one second periods with one or more errored blocks

PNMS Common




58 ES THRESHOLD (15min)


Number of one second periods which contain 30% or more errored blocks during available time only

PNMS Common




59 SES THRESHOLD (15min)


Number of one second periods which contain 30% or more errored blocks during a day

PNMS Common



60 SES THRESHOLD (day)



NEC Corporation


Unavailable second PNMS Common




61 UAS THRESHOLD (15min)


Unavailable second PNMS Common




62 UAS THRESHOLD (day)


Number of errored blocks as part of SES

PNMS Common




63 BBE THRESHOLD (15min)


Number of errored blocks as part of SES

PNMS Common




64 BBE THRESHOLD (day)


Connection loss of AUX input interface

AUX SW UNIT 65 INPUT-1-6 (or NAME)

Check PM Card. (16)

Loss of AUX relay output interface AUX SW UNIT 66 OUTPUT-1-4 (or NAME)

Check PM Card. (16) PM card failure

Connection fail between PMC and PNMS

PNMS Common

1. Check PM Card. (16) PM card failure

2. Check Link connection (20) Link failure

67 PNMS LINK

3. Check PNMS cables. (19) PNMS cable failure

<Note 1> Unused channel/interface is masked according to the bit rate.

<Note 2> Way Side alarm inhibit function is applicable. Setting this function inhibits the issuance of alarm.

<Note 3> This item is masked in case of no WS system.


NEC Corporation

<Note 4> This item is masked in case of 1x34MB system.

<Note 5> The summarization of alarm outputs is fully user programmable; the table only shows the factory settings.

<Note 6> ALM LED does not light by the factory settings. It is changeable to light by the settings


NEC Corporation

Table.3 List of check items for alarm item (for PASOLINK+ 1 + 0)


Alarm Items


Input STM-1 signal is lost (From MUX) IDU

a) Check data input cable and connector failure from MUX (Short-circuit)


1 MAIN INTFC LOS (MUX)

b) Check MUX MUX

Frame synchronization of input STM-1 signal (From MUX) is lost

IDU



2 MAIN INTFC LOF (MUX)

b) Check MUX

BER is worse than preset value (10-3 to 10-5, selectable)

IDU

a) Check data input cable and connector failure from MUX (Short circuit/Loose connect)


3 E-BER (MUX)

b) Check MUX MUX


IDU



4 SD (MUX)

b) Check MUX MUX

Input STM-1 signal is lost (From Radio) IDU 5 MAIN INTFC LOS (DMR)

a) Check IDU and INTFC card IDU/INTFC failure (IDU replace)

Frame synchronization of input STM-1 signal (From Radio) is lost

IDU 6 MAIN INTFC LOF (DMR)

a) Check IDU and INTFC card IDU/INTFC failure (IDU replace)


IDU


7 E-BER (DMR)

b) Check opposite Station Opposite station


NEC Corporation

c) Check IDU and INTFC card IDU/INTFC (Replace IDU)


IDU


8 SD (DMR)


150M INTFC/OPT INTFC/10/100BASE-T INTFC module failure

150M Intfc/Opt Intfc

/10/100BASE-T Intfc

9 MAIN INTFC

a) Check IDU/INTFC card IDU/INTFC (Replace IDU)

Link of LAN (10/100 BASE-T INTFC) and associated equipment is not established

IDU

a) Check data input cable and connector failure from/to DTE


b) Check DTE DTE

10 LINK

c) Check LAN card inside IDU LAN INTFC (Replace IDU)

WS INTFC,WS/ALM INTFC, ALM INTFC or LAN CARD(DSC) module failure

IDU 11 SUB INTFC

a) Check each Sub Module Sub INTFC (Replace IDU)

Communication between modules failure IDU 12 MD CPU ALM

a) Check IDU IDU (Replace IDU)

Modulator failure IDU

a) Check Atmosphere Temperature Improve enveronment condition of IDU

13 MOD ALM

b) If continues MOD alarm on, Replace IDU

Demodulator failure and input IF signal is lost IDU


b) Check Atmosphere Temperature Improve enveronment condition of IDU

14 DEM ALM

c) Check Frame ID using LCT or PNMT/S IDU Setting

MODEM failure IDU 15 MODEM

a) Check IDU Replace IDU

DC-DC CONV failure IDU 16 PS

a) Check DC Line voltage provided to IDU DC Voltage unstable


NEC Corporation

b) Check Power cable and connector Power CBL Connector

c) If continuous PS ALM on Replace IDU

Transmit RF power increases/decreases approx 3dB from normal

ODU

a) Check Atmosphere Temperature Improve enveronment condition of ODU

19 TX PWR ALM

b) If continues TX PWR ALM alarm on, Replace ODU

TX IF input signal from the IDU is lost IDU

a) Check IF Cable and Connector IF cable and connector failure

20 TX INPUT ALM

b) Check IF Cable Loss IF cable loss

Receiver input level decreases below squelch level as shown below

32QAM : -81dBm

128QAM : -72dBm

ODU 21 RX LEVEL ALM


b) Check opposite site Opposite site

Local oscillator is unlocked ODU 22 APC ALM

a) Check Atmosphere Temperature Improve ODU temperature


Communication between the ODU and IDU is lost

ODU 23 CABLE ALM

a) Check IF cable and connector IF cable and connector failure

24 MAINT The equipment is in maintenance mode. In this mode, the following control can be performed.

ATPC manual control

Loopback

TX mute

ALS manual restart

CW

MAINT


NEC Corporation

Table.4 List of check items for alarm item (for PASOLINK+ 1 + 1)


Alarm Items


Input STM-1 signal is lost (From MUX) IDU IDU No 1/2



1 MAIN INTFC LOS (MUX)

b) Check MUX MUX

Frame synchronization of input STM-1 signal (From MUX) is lost

IDU IDU No 1/2



2 MAIN INTFC LOF (MUX)

b) Check MUX


IDU IDU No 1 /2



3 E-BER (MUX)

b) Check MUX MUX


IDU IDU No 1 /2



4 SD (MUX)

b) Check MUX MUX

Input STM-1 signal is lost (From Radio) IDU IDU No 1 /2 5 MAIN INTFC LOS (DMR)

a) Check IDU and INTFC card IDU/INTFC failure

Frame synchronization of input STM-1 signal (From Radio) is lost

IDU IDU No 1 /2 6 MAIN INTFC LOF (DMR)

a) Check IDU and INTFC card IDU/INTFC (IDU replace)


IDU IDU No 1 /2



7 E-BER (DMR)

c) Check IDU and INTFC card IDU/INTFC (Replace IDU)


NEC Corporation


IDU IDU No 1 /2


8 SD (DMR)


150M INTFC/OPT INTFC/10/100BASE-T INTFC module failure

150M Intfc/Opt Intfc

/10/100BASE-T Intfc

9 MAIN INTFC

a) Check IDU/INTFC card IDU/INTFC (Replace IDU)

Link of LAN (10/100 BASE-T INTFC) and associated equipment is not established

Link 1/ 2

a) Check data input cable and connector failure from/to DTE


b) Check DTE DTE

10 LINK

c) Check LAN card inside IDU LAN INTFC (Replace IDU)

WS INTFC,WS/ALM INTFC, ALM INTFC or LAN CARD(DSC) module failure

WS, WS/ALM, ALM INTFC or LAN Card

11 SUB INTFC

a) Check each Sub Module Sub INTFC (Replace Sub Intfc)

Communication between modules failure IDU IDU No 1/ 2 12 MD CPU ALM

a) Check IDU IDU(Replace IDU)

Modulator failure IDU IDU No 1 /2

a) Check Atmosphere Temperature Improve enveronment condition of IDU

13 MOD ALM

b) If continues MOD alarm on, IDU(Replace IDU)

Demodulator failure and input IF signal is lost IDU IDU No 1 /2


b) Check Frame ID using LCT or PNMT/S IDU Setting

14 DEM ALM

c) Check Atmosphere Temperature Improve enveronment condition of IDU

d) If continues MOD alarm on, IDU(Replace IDU)


IDU IDU No 1/2


15 High BER ALM



NEC Corporation

c) Check IDU IDU(Replace IDU)


IDU



16 Low BER ALM

c) Check IDU

MODEM failure IDU IDU No 1 /2 17 MODEM

b) Check IDU Replace IDU

DC-DC CONV failure IDU IDU No 1 /2

d) Check DC Line voltage provided to IDU DC Voltage unstable

e) Check Power cable and connector Power CBL Connector

18 PS

f) If continuous PS ALM on Replace IDU

Transmit RF power increases/decreases approx 3dB from normal

ODU ODU No 1/2

c) Check Atmosphere Temperature Improve enveronment condition of ODU

19 TX PWR ALM

d) If continues TX PWR ALM alarm on, Replace ODU

TX IF input signal from the IDU is lost ODU ODU No 1/2

c) Check IF Cable and Connector IF cable and connector failure

20 TX INPUT ALM

d) Check IF Cable Loss IF cable loss

Receiver input level decreases below squelch level as shown below

32QAM : -81dBm

128QAM : -72dBm

ODU ODU No 1 /2 21 RX LEVEL ALM

c) Check “RX LEVEL”, if lower>> Antenna system or natural fading

d) Check opposite site Opposite site

Local oscillator is unlocked ODU ODU No 1/2 22 APC ALM

c) Check Atmosphere Temperature Improve ODU temperature

d) If continues alarm on Replace ODU

Communication between the ODU and IDU is lost

IF CBL

Cable No 1 /223 CABLE ALM

b) Check IF cable and connector IF cable and connector failure


NEC Corporation

24 MAINT The equipment is in maintenance mode. In this mode, the following control can be performed.

ATPC manual control

Loopback

TX mute

ALS manual restart

CW

MAINT


NEC Corporation

Appendix A Preventive Maintenance Checklist

Preventive Maintenance Cheek List Site Name:_________________

Check Date Equipment

Location

Check Item / / / / / / / /

ODU Visual IDU Visual

ODU primary power supply Transmitter Power Receiving Level

Radio

IDU through PNMT Configuration Setting

Visual Tightened with specified torque?

Antenna Rust

Visual Tightened with specified torque?

Aerial

Bracket Rust

Firmly fixed?

Connectors of jumper between ODU and feeder Waterproof The jumper cable Firmly tied with antenna pole? Frame ground of ODU Firmly connected to the earth

bar?

Firmly connected to the earth bar?

Firmly connected to the jumper cable?

The feeder Water proof IF cable connector Firmly fixed? Traffic cable connector

Firmly fixed?

Alarm cable connector Firmly fixed? Service Channel Cable Firmly fixed? Frame ground of IDU Firmly connected to the earth

bar?

Cable Power supply cable

and connector Firmly connected?


NEC Corporation

Appendix B Site Inventory Data Record Sheet

Site Inventory Data Record Sheet Site Name:_________________

Installation Date:_________________ To: ODU1 Serial No.:

Tx Frequency:

MHz Channel No.:

Rx Frequency: MHz

Channel No.: Transmitter Power:

dBmReceiving Level:

dBmODU2 Serial No.:

Tx Frequency:

MHz Channel No.:

Rx Frequency: MHz


dBmReceiving Level:

dBm Primary DC voltage:

V

IDU Serial No.: Bit rate: Frame ID MB 2 × 2 ڤ

MB 2 × 4 ڤ MB 2 × 8 ڤ MB 2 × 16 ڤMB 8 × 1 ڤ

Default ڤ

To: ODU1 Serial No.:

Tx Frequency:

MHz Channel No.:

Rx Frequency: MHz


dBmReceiving Level:

dBmODU2 Serial No.:

Tx Frequency:

MHz Channel No.:

Rx Frequency: MHz


dBmReceiving Level:

dBm Primary DC voltage:

V

IDU Serial No.: Bit rate: Frame ID MB 2 × 2 ڤ

MB 2 × 4 ڤ MB 2 × 8 ڤ MB 2 × 16 ڤMB 8 × 1 ڤ

Default ڤ