User's Manual

TRACER 2xT1 User’s Manual
61280003L2-1B
Section 4 Troubleshooting
44
Preliminary
YEL/AIS Alarm
This alarm indicator will flash when a T1 Yellow alarm occurs. The indicator will remain on (solid) to
indicator an AIS alarm when the DS1/DSX-1 is receiving a blue code (a string of 2316 1’s with no more
than 1 zero).
Recommended Action
Possible Cause (see list below)
• The DS1/DSX-1 equipment is sending a “blue code” (all 1’s)
to the T1 input. .......................................................................................... 1,2
• The far-end equipment is in a red condition and
transmitting a yellow alarm. .....................................................................3-5
Recommended Actions:
1. Reset the upstream equipment and verify normal operation.
2. Verify the presence of a DS1/DSX-1 signal at the T1 monitor jack using a T1 test set.
3. Check the far-end equipment for alarms or a red condition.
4. Check the T1 connections at the far-end equipment.
5. Reset the far-end equipment.
RF Link Alarm or Code Sync Alarm
The RF Link Alarm will activate when the link is down or not operational. The Code Sync Alarm will
activate when data synchronization has not been achieved between the RF link.
Recommended Action
Possible Cause (see list below)
• The RF link is down. ..............................................................................1-10
• The RX power is below the -91 dbm threshold............................... 1-4,7-10
• The far-end transmitter is off, or is transmitting low power. .......... 1-4,7-10
• The RF path is not aligned. .................................................................. 1,3,10
• Water is in the antenna feedhorn or connectors. ...................................... 1,4
• Both units are set to the same frequency. ............................................... 5,10
• Both units are not set to the same PN code. ................................................ 6
• The connection between the BBP and the RFC is faulty. .................. 1,7-10
• The connection between the RFC and the antenna is faulty. ............. 1,7-10
• The BBP or RFC is faulty.......................................................................... 10
I M P O R T A N T
If problems persist after you have followed the Recommended Actions, contact ADTRAN Technical
Support at [phone].