CHAPTER 3 OPERATING INSTRUCTIONS - TM-11-5895-833-120021

TM 11-5895-833-12/NAVELEX 0967-LP-550-1010/TO 31R5-2TSC54-91

CHAPTER 3

OPERATING INSTRUCTIONS

Section I. CONTROLS AND INDICATORS

3-1.Introduction

This section contains a functional description of

all

controls, indicators, and connectors used during normal

3-2. Major Component Controls, Indicators

operation of the AN/TSC-54 frequency conversion

and Connectors

subsystem. The functional des criptions are keyed to

The controls, indicators, and connectors for the major

supporting illustrations by equipment placarding.

components comprising the frequency conversion

Table 3-1. Converters, Frequency, Electronic

subsystem are listed in tables 3-1 through 3-7, and

CVJ084/MSC-46(V) and CV-3084A/MSC-46(V) Controls

shown in figures 3-1 through 3-7.

and Indicators.

Control, indicator or

connector (fig.3-1)

Function

RF OUTPUT LEVEL ADJ control

Adjustments up-converter output signal level. Connects

RF OUTPUT ON LINE-OFF LINE waveguide switch:

-up-converter output to signal combiner input.

ON LINE

Disconnects up-converter output from signal combiner

OFF LINE

input and provides proper termination for up-converter

output and signal combiner input.

Provides zero adjustment of RF POWER meter. Adjusts

POWER METER ZERO ADJ screwdriver adjustment

level of signal applied to rf power monitor associated with

POWER MONITOR ATTENUATOR

RF POWER meter, for calibration purposes. Indicates

power level of signal to rf power monitor. Monitors level

RF POWER meter

selected by status selector switch. Provides fine tuning

STATUS meter

of rf oscillator frequency. Selects signal to be monitored

TRANSMIT FREQ FINE TUNE DECR-INCR control

by STATUS meter. Illuminated (red) to indicate low or

Seven-position status selector rotary switch

high rf signal levels Lights red to indicate when rf phase-

FAULT INDICATORS

locked oscillator is out-of-lock. Flashes red to indicate

RF LEVEL indicator lamp

unacceptable levels and quantities of phase noise bursts

RF LO indicator lamp

are being generated.

Illuminated (red) when if. phase-locked oscillator is out of

phase lock.

Selects up-converter transmit frequency.

IF LO indicator lamp

Provides access to RF POWER meter.

TRANSMIT FREQUENCY SELECTOR MHz thumb-

Sets full-scale sensitivity of RF POWER meter at 0 DBM,

wheel switches

-10 DBM, or -20 DBM.

RF POWER METER INPUT connector

Provides 7.9- to 8.4-GHz test output.

POWER METER RANGE rotary switch

Provides access to rf power monitor unit.

Provides sample of (7.2- to 7.7-GHz) local oscillator

RF TEST OUTPUT connector

signal for test purposes. Provides sample of 630 MHz

RF POWER MONITOR connector

LO signal for test purposes. Used to deactivate RF

RF LO SAMPLE connector

AUDIBLE ALARM Provides attenuation of 0 to 21 db in

1-db steps to compensate for 70-MHz rf input levels

IF LO SAMPLE connector

between -10 and +10 dBm. Illuminates (white) to

AUDIBLE ALARM DEFEAT momentary pushbutton

indicate presence of 24-volt dc power.

Controls

switch

application of ac power to up-converter. Sounds to

IF LEVEL ATTENUATOR

indicate high or low rf output level. Selects operation for

POWER ON indicator lamp

frequency modulation (FM) or digital (DGTL) mode

POWER ON-OFF circuit breaker

RF AUDIBLE ALARM

MODE SELECTOR switch

Change 1

3-1