POWER CONNECTION

TM 11-5820-918-13

2-10. ENVIRONMENTAL CASE ENCLOSURE. The TCS-4B is supplied in an environ-

mental case. This configuration is particularly suitable for shock or vibration prone

environments. The container comes complete with four carrying handles for conven-

ient local transportation. In addition, front and rear doors remove easily for access

to equipment. The external dimensions and weight of the unit are shown in figure

2-2. Front and rear covers of environmental case must be removed to provide ade-

quate ventilation when operating the TCS-4B.

POWER

CONNECTION

2-12. LINE VOLTAGE. The TCS-4B transmitter may be operated from either 115

or 230 volt (10%), 47 to 440 Hz power lines. A toggle switch mounted near the power

supply, (refer to figure 2-4) of each of the three units comprising the transmitter

permits easy conversion from either voltage. Access to the switch is obtained by

removing each unit from the case and removing the top cover of the unit. In the

5018, the top subchassis plate (see fig. 2-3) must also be removed. The switch will

be visible from the top and switch positions are marked 115 and 230. Figure 2-4 shows

the switch location on the power amplifier unit and is typical for the other units.

WARNING

A three-wire (line, neutral, and safety ground) AC line power connection

is required when operating the equipment. If a 3-wire safety grounded AC

power receptacle is not available, a separate ground wire must be installed

from the chassis ground to an earth ground. Without an adequate ground,

the equipment chassis and frame will float to a dangerously high potential.

NOTE

Before connecting AC power to unit, be sure the correct fuse is installed

as follows:

Type

230V

Unit

115V

1024

1/2 A

Normal Blow

5018

15 A

Slow Blow

4011

1/2 A

Normal Blow

Make sure toggle switch for each unit is in the correct position.