Section 3. OPERATION - TM-11-5820-918-130033

TM 11-5820-918-13

SECTION 3

OPERATION

INTRODUCTION

3-2. This section provides the basic information required to operate the TCS-4B

transmitter. The operating controls and indicators are illustrated, and the function

of each control and indicator is described.

3-3. CONTROLS AND INDICATORS

3-4. The controls and indicators required to operate the transmitter are located on

the front panel of the transmit sweep generator unit. Individual power on-off switches

for control of primary power are located on the front panels of the 1024 and 4011.

Operator controls consist of pushbutton switch-indicators and toggle, thumbwheel,

or rotary switches. Controls and indicators are illustrated in figure 3-1. and function-

ally described in table 3-1.

3-5. OPERATING INSTRUCTIONS

3-6. GENERAL. The TCS-4B transmitter is normally operated in a fully automatic

mode once the transmitter is initially set up and synchronized with an associated, re-

motely located TCS-4B receiver. Four modes of operation are available: continuous,

manual, set, and programmer. Each mode has a particular purpose and provides dif-

ferent functions. A mode of operation can be selected or the mode changed while the

transmitter is operating (frequency being swept) without affecting the frequency

sweep or system time.

Mode. The continuous mode of operation is intended for use during

a. Continuous

transmitter. With the MODE switch in CONT position, the trans-

service test of the

mitter provides an

output that is swept and recycled between the low of 2 MHz and

either 16 or 30 MHz. The path programmer MINUTES switch and

the preset high of

the RESET, START,

and STOP switches have no effect on transmitter operations in

this mode. If the

sweep is stopped, placing the MODE switch in CONT position starts

the sweep.

b. Manual Mode. In manual mode, the frequency sweep is controlled by the

START, STOP, and RESET switches. This mode is used to reset the frequency sweep

at start up and to exercise manual control of transmitter frequency for maintenance

purposes. When started, the frequency sweep will advance from 2.00 MHz to the pre-

set high limit and reset to 2.00 MHz. If, during a frequency sweep, the STOP switch

is activated, the sweep stops and the transmitter radiates at the fixed freuqency.

System time is not affected by actuation of START, STOP, or RESET switches in man-

ual mode; only the frequency sweep is controlled. The RF output of the transmitter

is always on in MANUAL mode.