Maintenance
9711-44 Ku-Band TXRX
19-12
19.7.3.1.3.
BDE/ADE No Response:
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).
•
ACU to BDE modem interface cable failure
Verify harness continuity. Repair or replace as required
•
ACU Antenna Port Failure
o
Install an RS232 Loopback connector** on Antenna Port of the ACU. Enter
an “n0999” Remote Command and verify that it echoes back on the bottom
line of the display.
1.
If loop back works, BDE Modem failure or ACU to BDE Interface
cable failure.
2.
If loop back does not work, ACU failure.
19.7.3.1.4.
ADE No Response 1: (assumes LED illumination on both
modems)
•
Modem Configuration
Verify BDE modem and ADE modem are properly configured (jumper block settings).
o
Install Spectrum Analyzer in line with the Rx IF coax path.
1.
If 465.0MHz Transmit Beacon is present, the fault is the BDE
modem.
2.
If 465.0MHz Transmit Beacon is NOT present fault is with the
ADE modem.
19.7.3.1.5.
ADE No Response 2:
•
ADE Modem Configuration
Verify the ADE modem is properly configured (jumper block settings).
•
Coax Cable failure
Verify continuity on the items listed below, repair or replace as required.
o
Base Modem to connector bracket (Base Rack Panel Assembly)
o
(CFE) BDE to ADE Rx (LMR-400)
o
Rx N to SMA Adapter (Connector bracket at Radome base)
o
SMA to SMA connector bracket to bottom side rotary joint
o
SMA to SMA 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.
19.7.3.1.6.
BDE Receive Or ADE Transmit (PED M&C):
•
BDE Modem Rx Port Failure (Not receiving at 465.0MHz) or
•
ADE Modem Tx Port Failure (Not transmitting at 465.0MHz)
o
Install Spectrum Analyzer in line with the Rx IF coax path.
1.
If 465.0MHz Transmit Beacon is present, the fault is the BDE
modem.
2.
If 465.0MHz Transmit Beacon is NOT present fault is with the
ADE modem.
Summary of Contents for 9711-44 KU-BAND TX/RX
Page 3: ......
Page 12: ...Table of Contents xii This Page Intentionally Left Blank ...
Page 24: ...Site Survey 9711 44 Ku Band TXRX 2 8 This Page Intentionally Left Blank ...
Page 64: ...Installation 144 Radome 9711 44 Ku Band TXRX 3 40 This Page Intentionally Left Blank ...
Page 112: ...Basic Setup of the ACU 9711 44 Ku Band TXRX 5 4 This Page Intentionally Left Blank ...
Page 114: ...Setup Ships Gyro Compass 9711 44 Ku Band TXRX 6 2 This Page Intentionally Left Blank ...
Page 116: ...Setup Band Select 9711 44 Ku Band TXRX 7 2 This Page Intentionally Left Blank ...
Page 122: ...Setup Home Flag Offset 9711 44 Ku Band TXRX 9 4 This Page Intentionally Left Blank ...
Page 130: ...Setup Searching 9711 44 Ku Band TXRX 11 6 This Page Intentionally Left Blank ...
Page 150: ...Antenna Specific Operation 9711 44 Ku Band TXRX 16 4 This Page Intentionally Left Blank ...
Page 154: ...Functional Testing 9711 44 Ku Band TXRX 17 4 This Page Intentionally Left Blank ...
Page 158: ...Installation Troubleshooting 9711 44 Ku Band TXRX 18 4 This Page Intentionally Left Blank ...
Page 180: ...Maintenance 9711 44 Ku Band TXRX 19 22 This Page Intentionally Left Blank ...
Page 198: ...Drawings 9711 44 Ku Band TXRX 23 2 This Page Intentionally Left Blank ...
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