ADTRAN TRACER 5045 - Manual (Page 52)

Section 6 Troubleshooting Guide TRACER 5045 System Manual
52 © 2004 ADTRAN, Inc. 612805045L1-1B
1. OVERVIEW
This troubleshooting guide provides recommended actions for various conditions of the TRACER 5045
system. The status LEDs (located on the front panel of the unit) provide information to help determine the
necessary troubleshooting action. This guide contains recommended actions for resolving possible
problems indicated by the status LEDs.
2. LED INDICATORS
PWR LED
If the PWR LED is not ON and solid green, the TRACER 5045 is not receiving adequate DC power.
Recommended Actions:
1. Verify that the power source is delivering between 21 and 60 VDC.
2. Check the polarity of the power connection (referenced to ground) of both the TRACER 5045 unit and
the power source.
3. Check the internal fuse. The fuse is accessed from the rear panel of the unit. If this fuse is open,
replace with a 2 A, 250 V (2-inch) slow-blo fuse.
TST LED
The TST LED will blink once (amber) during power-up to indicate a self-test is in progress. If the TST
LED is blinking or remains ON after 10 seconds, the TRACER 5045 unit has failed the self-test. This is an
internal failure, and ADTRAN technical support should be contacted.
RF DOWN LED
If the RF DOWN LED is ON (solid red), there is a problem with the RF receive path from the remote
TRACER 5045.
Recommended Actions:
1. Verify that one end of the link is configured as Plan A and the other end as Plan B.
2. Measure the RSSI voltage and consult the RSSI calibration sheet included with the unit. If the voltage
level corresponds to a received signal power level that agrees with the calculated receive signal level,
proceed with Step 7.
3. Check the RF coaxial cable connection.
4. Verify that the antenna polarization is the same at both ends of the RF signal transmit and receive
path.
5. Verify the RF signal path is clear.
6. Check the integrity of the lightning arrestors.
7. Check for possible interference at both ends of the link. If necessary, change polarization and/or
bandplans at both ends.