User's Manual

61-89A-50-A18-G1-UserMan page 17 of 20

TX RX Systems Inc. Manual 7-9352 (version 4) 01/27/04 Page 17

4) For signals coming from a fixed antenna or sta-

tion, record the level of all the desired incoming

signals for future reference.

MAINTENANCE AND REPAIR

Signal boosters manufactured by TX RX Systems,

Inc. can function reliably for 10 or more years with

little or no maintenance. However, if the amplifiers

are subjected to excessively high signal levels,

power surges or lightning strikes, failures may

occur. The following procedures may be followed

for detecting a malfunctioning unit or as part of a

periodic maintenance program.

1) The heatsink area should be cleared of dust

and debris.

2) Inspect the unit to see that the power supply

LED DC indicator is lit (remove any dust or

debris that may obscure the LED). This will ver-

ify that DC power is flowing properly. Check all

hardware for tightness.

3) Compare system performance to initial perfor-

mance levels measured when the system was

first installed. The lack of signal can be traced to

a malfunctioning amplifier by progressive signal

monitoring from the output (far end) to the input

end of the system noting the area where the

signal returns to normal level. The next amplifier

toward the output end of the system will proba-

bly be the one that failed.

Measure the gain at any convenient frequency

in the working frequency band to verify that the

gain specification is being met. If the gain val-

ues fall below that specified for the model check

the following:

A) Open the signal booster cabinet and inspect for

any loose or broken connections or cables, and

repair as necessary.

B) Measure the output of the power supply to see

that the proper operating voltage is being main-

tained.