Table 2-1. Control Panel, Operating Controls, Indicators, and Connectors (continued).

TM 55-4920-325-14&P

Table 2-1. Control Panel, Operating Controls, hdicators, and Connectors (continued).

Figure 2-1

Name of Control

Index

Indicator, or

Function

Number

Connector

Provides fine adjustment of

COMP 25-250 MMF

control (C402)

tank unit compensator

probe capacitance which is

simulated by test set when

testing aircraft indicator.

Locks COMP 25-250 MMF

COMP 25-250 MMF

control setting.

control lock

Indicates capacitance of

STANDARD CAPACITOR

MMF nameplate

standard capacitor includ-

ed in test set.

Establishes test set mode of

FUNCTION SELECTOR

operation. When FUNC-

switch (S401)

TION SELECTOR switch is

set to CAP IND-ZERO CAL

permits zero adjustment of

CAPACITOR INDICATOR.

When FUNCTION SELECTOR

switch is set to CAP lND-

HIGH CAL, permits adjust-

ment of CAPACITOR

INDICATOR in high range,

When FUNCTION SELECTOR

switch is set to TANK UNIT

TEST-COMP, test set

measures either resist-

ance or capacitance of air-

craft tank unit compensator

probe, depending on setting

of CAP-RES CHECK

switch.

Locks PROBE 25-250 MMF

PROBE 25-250 MMF

control setting.

control lock

Provides fine adjustment of

PROBE 25-250 MMF

tank unit main probe capac-

control (C401)

itance to be simulated by

test set when testing air-

craft indicator.

Provides adjustment of tank

PROBE MMF range

unit main probe capacitance

selector switch

(in 200 pF steps, from 0 to

(200 pF step)

800 pF) to be simulated by

(S403)

test set when testing air-

craft indicator.

2-7