Section 8 Troubleshooting Guide
TRACER 6000 Series Split System Manual
120
Copyright © 2005 ADTRAN, Inc.
612806320L1-1B
1.
OVERVIEW
This troubleshooting guide recommends corrective actions for various conditions of the TRACER system.
The status LEDs (located on the front panel of the unit) provide information to help determine the necessary
troubleshooting action. This guide suggests steps 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 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 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
it with a 2 A, 250 V (2-inch) slow-blo fuse.
4.
Verify that the coaxial feedline cable is connected to the
TO IDU
port on the ODU and the
TO ODU
port
on the IDU.
5.
Verify the integrity of the coaxial feedline cable between the IDU and ODU.
6.
Verify the integrity of the lightning arrestors (both RF and IF).
TST LED
The
TST
LED will flash once (amber) during power-up to indicate a self-test is in progress. If the
TST
LED
is flashing or remains
ON
after 10 seconds, the TRACER unit has failed the self-test. This is an internal
failure, and Technical Support should be contacted.
RF DWN LED
If the
RF DWN
LED is
ON
(solid red), there is a problem with the RF receive path from the remote
TRACER.
Recommended Actions:
1.
Verify that one end of the link is configured as frequency plan A and the other end as frequency plan B.
2.
Verify that both ends of the link are configured for the same band plan (1, 2, 3).
3.
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 9.
4.
Check the IF coaxial cable connection between the IDU and the ODU.
If a problem is found with the coaxial feedline cable between the IDU and ODU or
the lightning arrestors, IMMEDIATELY remove power from the IDU to avoid further
damage.
