Figure 5-1. Radio Receiver-Transmitter RT-980/GRC-171, Test Point Location

TO 31R2-2GRC171-2

TM 11-5820-815-14

NAVELEX 0967-LP-544-5010

Table 5-2. Test Points (Sheet 4 of 4)

REFERENCE

MODULE TO WHICH

DESIGNATION

TEST POINT

FUNCTION

TEST POINT APPLIES

A10A1DS1

POWER

Lamp is lit when power switch

Chassis A10

(lamp)

is closed and dc-dc converter

is operating.

A10A1DS2

READY

Lamp is lit when frequency

D/a servo amplifier A1, frequency

(lamp)

synthesizer (pll) is locked

synthesizer A2, and rf filter A7

and servo loop is balanced.

A10A1J4

MIC DYNAMIC

Handset audio input/output.

Audio A4

Provides vocal/aural input

or output as required.

A10A2J8

Provides access to receiver

Receiver rf A3

(rear

output (10.7 MHz) or point of

panel)

injection of test signal.

A10A1J3

HEADSET

Provides vocal/aural output

Audio A4

as required.

A10A1J5

MIC CARBON

Provides vocal input

Audio A4

as required.

TP3-9894-017

Figure 5-1. Radio Receiver-Transmitter RT-980/GRC-171, Test Point Location

5-6