Radio Set Simulator Connectors

C2, TM 11-6625-564-12

Function

Control or indicator

Applies ground to a terminal of squelch relay Kl. Used for

CAR RELAY (pushbutton switch)

automatic relaying of signals when aircraft is equipped

with two radio sets for this purpose.

Action

Switch position

Depressed

Grounds pin S of jack J2.

Disconnects pin S from ground.

Released

Control or indicator

Meter

M o n i t o r s and provides indications for various settinxs

of TEST SELECT switch S1.

Readout mechanism

Indicates

receiver-transmitter

operating

frequency.

Provides jack for operator to plug headset into system.

HEADSET

H-101 A/U

Lights when POWER switch is set to RESET ON.

+27.5 VDC lamp

Lights when PTT pushbutton switch is depressed.

XMIT lamp

Lights when radio set control function select switch is set

T/R+G lamp

to T/R+G.

Lights when radio set control function select switch is set

T/R lamp

to T/R.

Lights when XMIT LOAD switch is set to ON.

XMIT LOAD lamp

Lights when the radio set control SENS knob is turned

SQ. DIS lamp

fully clockwise.

d. Radio Set Simulator Connectors. (fig. 2-3).

Function

Connectors

Provides electrical connections to the radio set simulator from the

aircraft radio set control.

Provides electrical connections to the radio set simulator from the

aircraft radio set control and ADF equipment.

Provides electrical connections to the radio set simulator from the

aircraft UHF antenna.

b. To perform bench troubleshooting of the

2-4. In-Aircraft and Bench Test

radio set, perform the preliminary starting pro-

Procedures

cedures (para 27) in this manual and refer to

a. To perform in-aircraft troubleshooting of

TM 11-5820-51835 for operating and trou-

the radio set, perform the preliminary in-air-

ble shooting procedures.

c. A complete list of all the cable connec-

craft starting procedures (para 25) in this

manual and refer to TM 11-5820-51835 for

tions used in troubleshooting procedures is in-

operating and troubleshooting procedures.

dicated in the chart below.

Connection

Cable or

Connection

From

cable adapter

Cable W1

J12 on receiver-transmitter or J 2

J2 on test unit

on radio set simulator

Cable W2 a

Jll on receiver-transmitter or J1

J1 on test unit

on radio set simulator

Cable W3

J1 on receiver-transmitter or J3

J3 on test unit

on radio set simulator

J1 on radio set control

Cable W4

J6 on test unit

External +27.5-volt dc source

Cable W5

J5 on test unit

J1 on receiver-transmitter chassis

Cable W6

P1 on receiver-transmitter module