Sea Tel 9711-92, Инструкция по установке и эксплуатации

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9711-92 Ku-Band TXRX Maintenance
18-11
Serial Loopback Connector
Build a Loop Back Test Adapter by Shorting Pin 1
to Pin 8 and Shorting Pin 2 to Pin 3 on a female
DB9(S) connector.
Spectrum Analyzer Capable of handling 100kHz up to 3Ghz & up to 48VDC
SMA “T” splitter or N type “T” splitter Or equivalent cabling
400MHz FSK Modem Fault Reference Table
ADE Modem RSSI BDE Modem RSSI Failure
P= <65, R= <65 P= <65, R= <65 None
P= >65, R= >65 P= >65, R= >65 Receive IF Path
No Response No Response BDE/ADE No Response
No Response P= <65, R= <65 ADE No Response 1
No Response P= >65, R= >65 ADE No Response 2
P= <65, R= <65 P= >65, R= <65 BDE Receive Or ADE Transmit (PED M&C)
P= <65, R= >65 P= <65, R= <65 BDE Transmit Or ADE Receive (PED M&C)
P= <65, R= <65 P= <65, R= >65 BDE Receive Or ADE Transmit (RF M&C)
P= <65, R= >65 P= <65, R= <65 BDE Transmit Or ADE Receive (RF M&C)
18.7.3.1.1. NONE:
No failure communication failures between ADE and BDE modems.
18.7.3.1.2. Receive IF Path:
The Following possibly points of failures assumes LED illumination on both modems.
•
Modem Configuration
Verify BDE modem and ADE modem are properly configured (jumper block settings).
•
Coax Cable failure
Verify continuity on the below coaxes, repair or replace as required.
o
BDE Modem to connector bracket (Base Rack Panel Assembly)
o
(CFE) BDE to ADE Rx IF (Base Rack Panel to radome Connector bracket)
o
Rx N to SMA Adapter (Located on connector bracket at radome base)
o
SMA to SMA (From connector bracket to bottom the bottom side of the
rotary joint)
o
SMA to SMA (From top side rotary joint to PCU/ADE Modem
•
Rotary Joint (Receive channel)
Verify continuity on the receive channel for its entire 360 degree range of motion.
Replace rotary joint if any sector of it has failed.
18.7.3.1.3. BDE/ADE No Response:
The Following possibly points of failures assumes LED illumination on both modems.