ADTRAN TRACER 2xE1, Руководство пользователя

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TRACER 2 x E1 User’s Manual
61280004L2-1C
Section 4 Troubleshooting
32
Recommended Actions:
1. Check the RX power using the VT100 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. Change the frequency of one radio through the VT100 user interface or front panel button.
6. Set both units to the same P/N code.
7. Check all connections between the BBP, the RFC, and the antenna.
8. Check the fuse on the IF board. This fuse is accessed by removing the top of the baseband
processor, and is located on the left side of the chassis when facing the front panel. If this
fuse is open, verify that the coax connections are correctly installed and check the BBP to
RFC coaxial cable for a short.
9. Check the IF and RF cables for shorts.
10. Check the connections inside the mastmount or rackmount RFC.
11. Replace the RFC.
CV/CRC Light on E1A or E1B is Lit – when CRC is enabled
The CV indicator will activate when the incoming E1 stream presents Code Violations or a CRC4 error.
Recommended Action
Possible Cause (see list below)
• The incoming E1 contains CVs or CRC errors ........................................... 1
• The line codes between E1 equipment and the TRACER
are incompatible ...........................................................................................
2
• The incoming E1 lines have CRC4 error checking turned off .................... 3
Recommended Actions:
1. Check the incoming E1 signal for CVs and CRCs using an E1 test set.
2. Correct the line code on the TRACER or E1 equipment.
3. Turn off CRC4 detection on TRACER.
I M P O R T A N T
If problems persist after you have followed the Recommended Actions, contact ADTRAN
Technical Support at (011) 256-963-8716.