TM 11-6625-1696-12
3-24.
TUNER RADIO FREQ Section Controls, Indicators, and Connectors-Continued
Controls/indicators
Function
Connector J11 DISCRIMINATOR INPUT.
Input connection to internal limiter-discriminator.
Connector J12........................................................
Connects receiver test city to AUT, and RF modules test facility.
Connector J13 VIDEO OUT....................................
Output connection from internal video amplifier.
Connector J14 SYNTHESIZER OUTPUT................
Output connection from internal synthesizer.
Connector J15 IF OUTPUT.....................................
Output connection from internal IF. amplifier.
3-25.
SYNTHESIZER FREQUENCY MHz Section Control, and Indicator
Controls/indicators
Function
Indicator.................................................................
Lights when internal synthesizer, or synthesizer in AUT, is programmed
Switch S8...............................................................
Programs internal synthesizer and synthesizer in AUT for the output
frequencies selected.
3-26.
RADIO RCVR Section Controls and Connectors
Controls/indicators
Function
Switch 10 (4-position rotary switch).........................
Connects ac power to AUT, and meter M1 to AUT power supply through
switch S5 position S10.
Sw pos
Meter indication
-12 V ......................................Voltage of AUT - 12 volt dc supply.
+12 V .....................................Voltage of AUT + 12 volt dc supply.
+26 V ......................................Voltage of AUT + 26 volt dc supply.
OFF ........................................Disconnects ac power.
Switch S11, HIGH SIG ALM....................................
Pressed and held to test high-signal alarm indicator on AUT.
Connector J17 VIDEO.............................................
Connection from video output of AUT.
Connector J18 PCM................................................
Connection from pcm output to AUT.
Connector J19 IF IN................................................
Connection to IF. input of AUT.
Connectors J20 and J25........................................
Connect receiver test facility to AUT.
Connector J21 FDM................................................
Connection from fdm output of AUT.
Connector J22 OW.................................................
Connection from order wire output of AUT.
Connector J23 TIMING...........................................
Connection from timing output of AUT.
Connector J24 RF OUT..........................................
Connection from RF output of AUT.
3-27.
AMPLIFIER IF AMPL FREQ MULT Section Controls, and Connectors
Controls/indicators
Function
Switch S12 (3-position rotary switch)......................
Connects power to AUT at J28 and J35.
Sw pos
Function
AMPL IF..................................Connects power to AUT at J28 and at J35.
AMPL FREQ MULT .................Connects power to AUT at J36.
OFF ........................................Disconnects power from AUT.
GAIN control...........................................................
Adjusts gain of AUT at J28 and at J35.
Switch S13.............................................................
Set to MAN, connects GAIN control to J28 and J35. Set to AGC, connects
agc voltage from AUT at J28 to J28 and J35.
Connector J27 IF....................................................
IF. output connection from AUT at J28.
Connector J28 PRE IF............................................
IF. output connection from AUT at J35.
Connector J28........................................................
Connects receiver test facility to AUT.
Connector J35........................................................
Connects receiver test facility to AUT.
Connector J29 RF IN..............................................
Connection to RF input of AUT at J36.
Connector J32 RF OUT..........................................
Connection from RF output of AUT at J36.
Connectors J30( +) and J31(-)................................
RF metering voltage connections from AUT at J36.
Connector J36........................................................
Connects receiver test facility to AUT.
3-13
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