Table 3-1. Controls and Indicators (cont)

TM 11-5820-918-13

Table 3-1.

Controls and Indicators - Continued

Figure

Function

Control

reference

BLKR STORE

When actuated, causes the frequency set on

11.

Pushbutton Switch

BLANKER FREQ switches to be stored in memory

channel selected by CHANNEL Switch. This

switch is enabled only with PROG/RUN switch in

PROG position.

When actuated, enables readout on MHz frequency

12.

BLKR DSPL

display of blanker frequency from memory of

Pushbutton Switch

selected CHANNEL, providing PROG/RUN switch

is in PROG position. If PROG/RUN switch is in RUN

position, erroneous display of memory can occur.

On/Off control for battery circuit of timer auxil-

BAT ON/OFF

13.

iary power supply.

Switch

NOTE

In all Operational modes, the BAT ON/OFF switch should be left on.

When on, battery control of the timer becomes automatic in the event

of a main AC line power failure.

14.

PROG/RUN

A two-position toggle switch that controls the

frequency blanking function. In PROG position,

Switch

the blanker memory may be loaded or checked, and

frequency blanking is disabled during a sweep. In

RUN position, the memory frequency settings will

automatically blank the transmitter output as

described in 9 above.

A two-position, locking-type toggle switch that

DIPLEX/DIRECT

15.

selects the transmitter output connection. The

Switch

toggle lever is spring-loaded to lock and must be

pulled out to change switch positions. In DIPLEX

position, TCS-4B output is passed through inter-

nal diplexer, and approximately 2% of output power

reaches antenna. This mode used for diplexing

TCS-4B sweep onto a communication transmitter

signal. In DIRECT mode, TCS-4B output is con-

nected directly to the antenna bypassing diplexer,

and the communication transmitter input connection

on 4011 unit is open circuited.

A two-position toggle switch that selects trans-

UPPER FREQ

16.

mitter sweep range of either 2 to 16 or 2 to 30

16/30 Switch

MHz.

3-11