TM 11-625-1696-12
3-12. CONTROL ALARM Section Controls, Indicator, and Connectors
Control, indicator, fuse, or connector
Function
Switch S25 .................................................................
In ON position, connects power and variable alarm signal to AUT.
Alarm indicator ...........................................................
Lights when AUT is in alarm condition.
SET INPUT control ......................................................
Adjusts level of alarm signal to AUT.
Connectors J32 and J35 ..............................................
Metering points for alarm signal to AUT.
Connector J33 .............................................................
Connects transmitter test facility to AUT.
Switch S26 .................................................................
Connects dc power to AUT, and metering voltages to meter M1
through S20, position S26.
Sw pos
Function
OFF ................................
Removes dc power from AUT.
ON ..................................
Connects + 26 volts dc to AUT.
20 V ................................
Connects +20 volts dc to AUT.
Indicator A ...................................................................
Lights when AUT is set to times-2 multiplication path.
Indicator B ...................................................................
Lights when AUT is set to times-3 multiplication path.
Switch S27 ..................................................................
Postion A sets AUT to times-2 multiplication path.
Connector J34 .............................................................
Connects transmitter test facility to AUT.
3-14. AMPLIFIER-MONITOR Section Controls and Connectors
Control, indicator, fuse, or connector
Function
Switch S28 (10-position rotary switch)..........................
Connects power to AUT; operates attenuators in AUT; connects
meter M1 to metering voltages from AUT; connects J36 to AUT;
loads video input to AUT with 51 ohms.
Sw pos
Function
OW .................................
Connects J36 to order wire input of AUT.
0 DB ...............................
Bypasses attenuation in signal path in AUT.
3.5 DB.............................
Inserts 3.6 dB attenuation in signal path in
.......................................
AUT.
6DB ...............................
Inserts 6 dB attenuation in signal path in
.......................................
AUT.
12 DB..............................
Inserts 12 dB attenuation in signal path in
.......................................
AUT.
FDM................................
Connects meter M1 to fdm metering
voltage from AUT.
12 CHAN.........................
Connects meter M1 to 12-channel pcm
metering voltage from AUT.
24 CHAN.........................
Connects meter M1 to 24-channel pcm
metering voltage from AUT.
FREQ RESP ...................
Connects compensating network
between J36 and AUT.
OFF ................................
Disconnects power and J36 from AUT.
Switch S29 METERING ...............................................
OUTPUT position connects J40 to output of AUT. INPUT position
connects J40 to J36.
Connector J36 VID IN ..................................................
Provides connection to input of AUT.
Connector J40 METER ................................................
Provides meter connection through 29.
Connector J37 .............................................................
Connects transmitter test facility to AUT.
3-7
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