Chapter 3. OPERATING INSTRUCTIONS - TM-11-6625-924-140009

TM 11-6625-924-14

CHAPTER 3

OPERATING INSTRUCTIONS

3-1. Controls, Indicators, and Connectors

3 - 1 . Controls, Indicators, and Connectors

(fig. FO-1)

(fig. FO-1) (cont)

Item

Function

Item

Function

flag or annunciator circuit in

Synchro transmitter No. 1 con.

Controls rotation of pointer No. 1

indicator.

trol

and pointer No. 2 on indicator

Connects output of B data

B307-B308-B304 switch

under test to check their opera-

transmitter B307, A data

tion and calibration.

transmitter B308, or heading

Meter

Used during flag and annunciator

selector transmitter B304 of in-

tests of the indicator to indicate

dicator to adjacent X-Y-Z bind-

current or a null.

ing posts to allow testing of

Synchro transmitter No, 2 con-

Controls rotation of slaving con-

transmitter output (POINTER

trol

trol transmitter in indicator

NO. 1 & 2-ALL OTHER TESTS

under test to check its opera-

switch in ALL OTHER TESTS

tion and tuning.

OHMS control

position).

Indicates resistance when

POINTER ADF-VOR-RMI

Connects synchro transmitter No.

BRIDGE SEL switch is in

switch

1 output signal to ADF, VOR,

FLAG RES or ANNU RES posi-

or RMI input of pointer No. 1

tion.

PRESS-TO-READ switch

on the indicator under test

When pressed, allows meter to in-

(POINTER NO. l-NO. 2-B306

dicate.

CUR ADJ control

switch in No. 1 position). Also

Adjusts current through flag and

connects 26 VAC to pointer No.

annunciator circuits in indica-

1 (POINTER NO. 1 & 2-ALL

tor under test.

OTHER TESTS switch at

POWER indicator

Indicates power is applied to test

POINTER NO. 1 & 2 position).

panel (ON-OFF switch at ON

POINTER NO. l-NO. 2-B306

NO. 1 position Connects synchro

position).

switch

ON-OFF switch

transmitter No. 1 output signal

Applies power to test panel,

HIGH POT binding posts

to pointer No. 1 of indicator

Provides connection for ohm-

under test (through ADF-VOR-

meter during insulation break-

RMI switch). Also connects 26

down (HIGH POT) test of in-

VAC to input of synchro

dicator (HIGH POT-NORM

transmitter No. 1.

switch in HIGH POT position).

NO. 2 position Connects synchro

HIGH POT-NORM switch

HIGH POT position. Connects in-

transmitter No. 1 output signal

dicator to HIGH POT binding

to pointer No. 2 of indicator

posts for high pot test.

under test. Also connects 26

NORM position Connects indica-

VAC to input of synchro

tor to test circuits in test panel

transmitter No. 1.

during all other tests.

PIN SEL switch

B306 position. Connects synchro

Connects selected indicator con-

transmitter No. 1 output signal

nnector pin(s) to HIGH POT

to slaving control transmitter

binding posts during high pot

B306 in the indicator under test

test (HIGH POT-NORM switch

to simulate flux gate input sig-

in HIGH POT position).

POINTERS 1 & 2-ALL

nals. Also connects 1.5 VAC to

1 & 2 position. Connects 26 VAC

OTHER TESTS switch

input of synchro transmitter

to pointer No. 1 and No. 2 for

No. 1.

pointer tests of indicator.

1.5 V ADJ control

Adjust 1.5 VAC Supply of test

ALL OTHER TESTS position.

panel.

Connects 26 VAC to B data

1.5 V binding posts

Used during adjustment of 1.5

transmitter B307, A data

VAC supply of test panel.

transmitter B308, and heading

5 VDC binding posts

Provides connection-for external 5

selector transmitter B304 in in-

VDC input for checking lights

dicator during tests of those

in indicator.

transmitter.

B306

X-Y-Z (B307-B308-B304) Connect to B data transmitter

X-Y-Z binding posts

binding posts

Used to apply normal load (flux

B307, A data transmitter B308

valve) to slaving control

or heading selector transmitter

transmitter B306 in indicator

B304 (through B307-B308-B304

during testing.

switch) to allow individual test-

VTVM binding posts

Used to apply signal to slaving

ing of transmitter outputs.

control transmitter B306 dur-

BRIDGE SEL switch

Connects bridge circuit for cur- ,

ing testing.

rent or resistance readings of'

3-1