Pa Input Signal Alarm; Pa Output Signal Alarm - Andrew 2400 Operation And Maintenance Manual

385700-4006-006
external test measurement cable losses are accounted for, the amplifier should be replaced.
Contact Andrew for additional information.
2.5.3.1.2

PA Input Signal Alarm

Attach a voltmeter to J4-3 on the Alarm I/O relay board (PA output alarm test point). TP1 or
TP2 can be used as the ground connection. After removing the signal from the J4 (FWD
IN/RVS OUT) port of the Distribution Line Amplifier Assembly verify that J4-3 is < 0.7 VDC. If
J4-3 is > 1.0 VDC, perform the steps outlined in section 2.5 for the PA input alarm adjustment.
If after completing the amplifier setup procedure the input alarm is not < 0.7 VDC with no input
to J4, the amplifier should be replaced. Contact Andrew for additional information.
2.5.3.1.3

PA Output Signal Alarm

Attach a voltmeter to J4-1 on the Alarm I/O relay board (PA output alarm test point). TP1 or
TP2 can be used as the ground connection. After removing the signal from the J4 (FWD
IN/RVS OUT) port of the Distribution Line Amplifier Assembly verify that J4-1 is < 0.7 VDC. If
J4-1 is > 1.0 VDC perform the steps outlined in section 2.5 for the PA output alarm
adjustment. If after completing the amplifier setup procedure the input alarm is not < 0.7 VDC
with the expected input to J4, the amplifier should be replaced. Contact Andrew for additional
information.
Document use is restricted to that described on cover
INSTALLATION
2-15