Table 3-1. Controls and Functions (cont)

TM 11-5820-917-13

Table 3-1.

Controls and Functions - Continued

Fig.

Control or

ref.

indicator

Function

Provides a numeric display of path 1 clock in minutes

16.

MIN SEC

Clock display

and seconds with MODE switch in all positions except

SET 2 and SET 3 positions. Displays path 2 time with

MODE switch in SET 2; displays path 3 time in SET 3

position.

Provides digital readout

of receiver tuned frequency

MHZ

17.

frequency display

for path being received.

Frequency readout is trun-

When CURSOR FREQ switch is

cated at 10 kHz decade.

actuated, readout is the

frequency of movable cursor.

PATH

Provides numeric display of received path, indicating

18.

display

sounder channel currently being received and pro-

cessed (display path shown on CRT may be different).

INPUT ATTEN

Selects antenna input attenuation of 0, 10, 20, or 30 dB.

19.

(dB) switch

Three thumbwheel switches to select one of three

ANTENNA

SELECT

20.

receiving antenna inputs for designated path.

switches

FREQ

21.

Selects 2-16 MHz sweep or 2-30 MHz sweep limits.

switch

ADV TIMER

When actuated, advances selected path clock in one

22.

minute increments. Active only when MODE switch

pushbutton switch

(29) is in SET position.

Three-position toggle switch to advance or retard

23.

MANUAL SYNC

ADV-RET

timing of selected paths in increments as selected by

the SLIP RATE switch. This switch is used to center

switch

the displayed path on the CRT and is enabled only

with MODE switch (29) in SET position.

MANUAL SYNC

Three-position rotary switch used in conjunction with

24.

SLIP RATE

item 23 to produce path timing changes at 1, 10 or 50

switch

milliseconds per second rates.

25.

AUTO SYNC

When actuated, starts automatic signal acquisition and

pushbutton switch- synchronization for path selected by MODE switch (SET 1,

indicator

SET 2, or SET 3). Switch indicator lamp flashes during

signal search; lamp lights steady when synchronization

is achieved.

3-5