ADTRAN TRACER 2xT1, Руководство пользователя

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TRACER 2xT1 User’s Manual
61280003L2-1B
Section 4 Troubleshooting
45
Preliminary
Recommended Actions:
1. Check the RX power using the VT-100 user interface or RSSI voltage.
2. Check the far-end transmitter for operation and proper transmit power.
3. Check the RF path using a spectrum analyzer or RSSI voltages for proper alignment. Have
path professionally re-aligned and check system path engineering.
4. Check the antenna feedhorn and all outdoor connections for water.
5. Verify both ends have same antenna polarization.
6. Change the frequency of one radio through the VT-100 user interface or front panel button.
7. Set both units to the same PN code.
8. Check all connections between the BBP, the RFC, and the antenna.
9. Check the IF and RF cables for shorts.
10. Check connections inside the mastmount or rackmount RFC.
11. Replace the RFC.
Carrier Sync Alarm or T1 Mux Framer Alarm
The Carrier Sync alarm will activate when frequency synchronization has not been achieved between the
RF link. The T1 Mux Framer alarm will activate when synchronization between the T1 mux on each
radio has not been achieved.
Recommended Action
Possible Cause (see list below)
• The RF link is down. .............................................................................. 1-10
• The RX power is below the -91 dBm threshold (-90 dBm 5.8 GHz).. 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 (800) 726-8663.