Adtran TRC4205 Manual Do Utilizador

Section 6, Troubleshooting Guide

TRACER 4205 System Manual

56

© 2002 ADTRAN, Inc.

612804205L1-1A

9. Examine the 

 LED on the front panel of each TRACER 4205. If this LED is illuminated, 

then the TRACER 4205 is receiving a relatively weak signal, however if the 

 LED is 

not illuminated, the received signal is being suitably processed by the TRACER system. If you are 
receiving a weak signal (

 is 

), please verify that the weak signal is not being caused by 

a faulty cable, an insufficiently tightened cable, or some other installation-related problem. Also, 
make sure an unreasonably large attenuation value has not been selected if you are using an 
attenuator on a work bench setup. 

Use the tables in Section 2, Microwave Path Engineering Basics, of this manual to select the 
proper free-space attenuation value (in dB) based on the estimated length of the microwave path. 
Remember to subtract out both antenna gains (local and remote) from the attenuator setting.

10. Command a link loopback in one TRACER 4205 unit and run pattern from the connected DS3 

equipment. This will verify data path between the DS3 equipment and the TRACER 4205 unit. 

1. If possible, attach any or all of the intended DS3 hardware to the TRACER 4205 units using the 

same work bench setup. This step offers the perfect opportunity to configure your DS3 hardware 
for proper functioning with the TRACER hardware.

2. Resolve any remaining DS3 equipment-to-TRACER 4205 configuration issues before field 

installation, if possible. This will significantly reduce the probability of unsuccessful field 
installation.