Test Procedures; Inoperative Distribution Line Amplifier; Input Power Verification; Table 4-2 Test Equipment - Andrew 2400 Operation And Maintenance Manual

385700-4006-006

4.3 TEST PROCEDURES

Refer to Table 4-2 Test Equipment, for a list of test equipment to perform the following test
procedures. If necessary, substitute an equivalent to the equipment listed.
The following test procedures help the user verify that a DLA is faulty. Return faulty amplifiers to
Andrew Corporation for maintenance and repair. Refer to paragraph 2.1.1 for equipment return
information.
Equipment
Spectrum Analyzer
Power Meter
Power Sensor
Power Sensor
Digital Volt Meter
RF Signal Generator
10 dB Power Attenuator
Variable Attenuator
Coaxial Cables

4.3.1 Inoperative Distribution Line Amplifier

4.3.1.1

Input Power Verification

Disconnect the power connector to the DLA. Using a DVM verify the levels of the AC input
voltage. See Figure 2-3 DLA Input VAC Pin-outs for additional information. If the input power
level is present, reconnect the power connector to the DLA.
If the input power is available to the DLA, open the amplifier and verify that the LED on the power
supply is illuminated. See Figure 1-3 DLA Internal View. If the LED is illuminated, then verify the
coaxial and Alarm/control signal connections.
If the power supply LED is not illuminated, unscrew the two fuses at the DLA connector plate.
Document use is restricted to that described on cover
Qty
1
1
1
1
1
1
As required Inmet 6N10W-10
As required HP 8495B
As required

Table 4-2 Test Equipment

WARNING
DANGER! High voltage shock hazard.
MAINTENANCE AND TROUBLESHOOTING
Part Number
HP8561B
HP437B
HP8481A
HP8481D
Fluke Model 77
HP 8664A
4-4