Test Set Subassembly MX3736/ ARM45, Controls, Indicators, and Connectors

TM 11-6625-409-12

Control, indicator, or connector

Function

EXT POWER-SHIP POWER switch ..................... Arranges AN/ARM-45(1*) for operation on either externally supplied dc power or

on dc power supplied from aircraft circuits under test.

27.5 VOLTS DC switch 115-ampere circuit

Provides for overload protection of external 27.5-volt dc power source and ON-

breaker).

OFF control of AN/AR.M-45 {*).

115 VOLTS 400 CPS switch (2-ampere

Provides for overload protection of external 115-volt. 40 0-cps ac power source and

circuit breaker).

ON-OFF control of AN/ARM-45 1l'.

DUMMY LOAD-ANT OR EXT. LOAD

Permits switching transmitter rf output from internal dummy load to external

switch,

dummy load. wattmeter. or vhf antenna.

614U-5-614U-6 switch .......................................... Arranges AN/ARM-45 (*) for testing either Radio Set Control 614U-5 or Radio

Set Control 614U-6.

RF INPUT-RCVR ANT OR SIG. GEN.

Provides for connecting Receiver 51X-2B under test to a signal generator or vhf

connector.

antenna.

RF OUTPUT-RCVR ANT THROUGH

Provides for connecting AN/ARM-45 (*1 to a vhf antenna and permits strapping

XMTR connector.

of transmitter and receiver under test to provide normal equipment operation.

1000 CYCLES jacks ............................................. Pin jacks that provide for the connection of an external 1.000-cps modulation

signal.

MILLIAMMETER 0-1 jacks.................................... Pin jacks that provide for connection to AN/ARM-45 (*) meter when required for

use as milliammeter 10- to 1-ma range).

MIKE jack.............................................................. Provides for connection of a microphone to key transmitter under test.

PHONE jack ......................................................... Provides for connection of a headset to monitor sidetone and output of transmitter

or receiver under test.

RF-HI, RF-MED and RF-LOW con-

Provide a means for sampling the rf output of Transmitter 17L-7A under test at

nectors.

three relative output levels: also provide for connection of an oscilloscope for

observation of the modulation envelope.

EXT LOAD OR ANT connector (J-109)

Provides for connecting an external dummy load. wattmeter, or vhf antenna to

the AN/ARM-45 (*)

LOC NAV receptacle (J-108) ................................ Provides for connecting VOR and LOC information from Receiver 51X-2B under

test to test cable receptacles J-101 through J-107 for special testing of OMNI

range system.

Test cable receptacles J-101 through J-

Provide for connecting the AN/ARM-45 (*) to components of AN/ARC-73 or

107.

AN/ARC-73A under test; receptacle J-107 provides for connecting AN/ARM-45

(*) to primary ac or dc power source.

Test lamps A through H and J through

Lamp code lighting sequence provides visual indicat ion when testing the remote

control units and associated wiring in the aircraft.

MIC KEY. STANDBY, and XMIT test

Provide visual indication of transmitter condition (transmit or standby) for

lamps.

Transmitter 17L-7A under test.

Meter (milliameter) ................................................ Used in conjunction with METER SELECTOR switch to measure the 27.5-volt

dc primary voltage, 115-volt, 400 cps ac primary voltage, relative rf power to

internal dummy load, and 1,000-cps audio signal from modulation source: also

used in conjunctio n with MILLIAMMETER 0-1 jacks as basic milliammeter.

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