Table 3-1. Controls and Indicators

TM 11-5820-918-13

Table 3-1.

Controls and Indicators

Figure

Function

Control

reference

Provides numeric display of system time in minutes

Clock Display -

MIN SEC

and seconds.

Provides numeric display of transmitted frequency

Frequency

Display - MHz

truncated at 10 kHz; also provides readout of

stored blanker frequencies when BLKR DSPL

switch activated.

Provides indication of forward or reflected power

Output Power

Meter and FWD/

to/from diplexer or antenna. With switch in FWD

REFL Switch

position, meter reads forward output power of

transmitter. Reading should be in green zone of

meter. With switch in REFL position, meter reads

reflected, or reverse, power. Reading should be

below red zone of meter.

NOTE

When operating in DIRECT mode, considerable variation in needle

position may occur due to antenna VSWR variations with frequency.

Meter readings inside and outside colored zones can be expected

durng normal operation. The transmitter will not be damaged by

any VSWR.

When pressed during transmitter sweep, initiates

TEST

both a transmitter functional test and a standby

Switch-indicator

battery voltage test. Results of test are shown by

indicators 5, 6, 7, and 8 below.

SYST

Indicates (when lighted) a malfunction in one or

Indicator (Red)

more power supplies or improper synthesizer

operation.

Indicates (when lighted) both synthesizer and

SYST

Indicator (Green)

power supplies are functional (operational during

button depression only).

Two lamps indicate standby battery condition.

BAT

Indicator (Green)

Lamps are activated by circuitry that measures

battery box terminal voltage. For the non-re-

chargeable battery supply (P/N 6025-1008), a test

BAT

is performed with AC line power either on or off,

battery switch (13) on, and TEST switch (4)

Indicator (Red)

pressed. For the rechargeable battery supply

(P/N 6025-1018) , the AC line power must be off to

conduct an accurate test. However, if the re-

chargeable battery supply is in a low charge con-

dition, turning off AC line power can cause loss of

synchronization. If operating in synchronization

3-9