Chapter 3. OPERATING INSTRUCTIONS - TM-11-6625-847-120010

TM 11-6625-847-12

CHAPTER 3

OPERATING INSTRUCTIONS

Section I. OPERATING CONTROLS, INDICATORS, AND CONNECTORS

fuses for the test trays used in conjunction with the test

3-1.

Operator's

Controls,

Indicators,

and

set.

Connectors

Note. This section covers only those items

The controls, indicators, connectors, and fuses on the

used when the equipment is being operated; items

front panel of the test set are listed maintenance of the

equipment are covered in paragraph 3-2. Paragraphs

used during tions given for the appropriate category

3-3 through 3-7 list controls, indicators, connectors, and

of maintenance

3-2.

Test Set Controls, Indicators, and Connectors

Control, indicator, or connector

Function

SERV SEL switch -----------------------------------------------

Controls +27-volt de primary power to test set in first four

positions (OFF, OVEN ON, STBY, and SSB/NSK), and

mode of operation of subassemblies, modules, or units of

AN/GRC-106, when connected to the test set.

Pos

Action

OFF

+27-volt de primary power removed from all

circuits

OVEN ON

a. +27-volt dc primary power to regulator

section of dc-to-dc converter and reg

assembly A3.

b. +27-volt dc primary power for OVEN ON.

c. +27-volt de primary power to REC/XMIT

switch S4 contact terminal 9, for RCVR +27

VDC/XMTR GND.

STBY

a. All OVEN ON functions repeated.

b. +27-volt dc primary power for STBY and all

modes

c. PA/RT switch contact terminal 5, section C,

grounded, in STBY and OPER.

SSB/NSK

a. All STBY and OVEN ON functions repeated.

b. PA/RT switch contact terminal 2 and contact

terminal 5, section C, grounded, for +27 V

DC OPR.

+27-volt dc primary power for DC OPR.

3-1