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61280004L2-1C
Section 4 Troubleshooting
If problems persist after you have followed the Recommended Actions, contact ADTRAN
Technical Support at (011) 256-963-8716.
"Fail" Light is Lit After Pressing "Remote Test" Button
The Remote Fail light will activate after a Remote Test has failed.
Possible Cause
•
The 10-second BERT has failed over the RF link to the far-end. .................. 1
•
The RX power may be below the specified receiver sensitivity .................... 1
Recommended Actions:
1.
Verify that the "RF Low" light is off.
"RF Low" Light is On
This alarm will activate if the RX power is below approximately -80 dBm.
Possible Cause
•
The RX power is below approximately -80 dBm. ................................. 1-5,7,8
•
The far-end transmitter is off, or is transmitting low power. ................ 2-5,7,8
•
The RF path is not aligned. .......................................................................... 3,8
•
Water is in the antenna feedhorn or connectors. ......................................... 4,8
Recommended Actions:.
1.
Check the far-end transmitter for operation and proper transmit power.
2.
Check the RF path using a spectrum analyzer or RSSI voltages for proper alignment. Have
path professionally re-aligned and check system path engineering.
3.
Check the antenna feedhorn and all outdoor connections for water.
4.
Check all connections between the BBP, the RFC, and the antenna.
5.
Check the IF and RF cables for shorts.
6.
Check the connections inside the mastmount or rackmount RFC.
7.
Replace the RFC.
36
I M P O R T A N T
Recommended Action
(see list below)
Recommended Action
(see list below)
TRACER 2 x E1 User's Manual
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