Test Set Controls, Indicators, and Connectors (Cont)

TM 11-6625-847-12

Control, indicator, or connector

Function

Pos

Action

PA/RT switch ----------------------------------------------------

PA ------------- Provides five-wire coding information, frequency

change ground, frequency information ground,

and ALC VOLTAGES test points; TUNE IN

and INFO IN are connected to PA CONTROL

connector J12.

RT ------------- Provides inputs on PA CONTROL connector

pins connected to J1, ALC VOLTAGE INFO,

and TUNE test points OUT and ALC control

voltages; ALC VOLTAGE INFO and TUNE

are connected to PA CONTROL connector

J12.

POWER indicator -----------------------------------------------

Indicates POWER switch S2 is set to ON, and +27volt dc

primary power is supplied from external source.

ALC VOLTAGE INFO control --------------------------------

Adjusts level of dc voltage at test point ALC VOLTAGE INFO

OUT and to PA/RT switch contact terminal 4, section D.

ALC VOLTAGE TUNE control -------------------------------

Adjust level of dc voltage at test point ALC VOLTAGE TUNE

OUT and to PA/RT switch contact terminal 1, section C.

DC VOLTAGE 200 control -----------------------------------

Adjusts level of +200-volt de output voltage.

DC VOLTAGE 20 control --------------------------------------

Adjusts level of +20-volt dc output voltage.

IF OSCILLATORS 1 1.75 MC output level control -----

Adjusts 1.75-me RF output level of IF oscillator module.

IF OSCILLATORS 2 1.7515 MC output level control --

Adjusts 1.7515-mc RF output level of IF oscillator module.

IF OSCILLATORS 3 1.7525 MC output level control --

Adjusts 1.7527-mc RF output level of IF oscillator module.

PULSE GENERATOR (upper) AMPLITUDE

Controls amplitude of this 85-sec pulse, and 150-sec

control.

pulse at OUTPUT connectors 1 and 2, respectively.

PULSE GENERATOR (upper) WIDTH control -------

Controls width of output pulse to 85-sec at connector

PULSE GENERATOR (lower) AMPLITUDE--------------

1, or to 150-sec at connector 2.

control.

Controls amplitude of 1-sec pulse at connector 3.

PULSE GENERATOR (lower) WIDTH control ---------

Controls width of 1-sec pulse at connector 3.

10 AMP fuse -----------------------------------------------------

Current protection for test set.

SPACE fuse ------------------------------------------------------

Receptacle for storage of spare fuse.

IF OSCILLATOR 4 TWO TONE output level control --

Adjust RF output level of mixer assembly.

POWER connector --------------------------------------------

Multipin connector for power cable W15.

DC VOLTAGE (ground) test connector -------------------

Ground test point for dc voltage measurements.

DC VOLTAGE +200 test connector -----------------------

Test point for measuring +200 volts dc.

AUDIO IN/OUT connector ------------------------------------

Multipin connector for audio cable W12.

AUDIO IN 600 (ohm) connector -----------------------------

For connecting external audio test equipment to AUDIO

IN/OUT connector.

AUDIO IN (ground) connector -------------------------------

Ground connector for external audio test equipment at AUDIO

IN/OUT connector.

AUDIO IN 50 (ohm) connector ------------------------------

For connecting external audio test equipment to AUDIO

IN/OUT connector.

AUDIO OUT 2 WATT connector ----------------------------

Connector for measuring audio input signals at AUDIO

IN/OUT connector.

AUDIO OUT (ground) connector ----------------------------

Ground connection for measuring audio input signals at

AUDIO IN/OUT connector.

AUDIO OUT 10 MW connector ----------------------------

Connector for measuring audio input signals at AUDIO/OUT

connector.

DC VOLTAGE +20 test connector -------------------------

Test point for measuring +20 volts de.

PA CON'TROL connector ------------------------------------

Multipin connector for control cable W11.

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