User Manual

Table Of Contents

Section 6, Troubleshooting Guide TRACER 4205 System Manual

9. Examine the RF LOW 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

RF DOWN LED is

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

receiving a weak signal (

RF LOW is ON), 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.

Installing/Configuring DS3 Hardware

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.

External pattern generators are required to test data path integrity. A DS3 BERT tester is

suggested.