Section II. PHYSICAL DESCRIPTION

Section Il. PHYSICAL DESCRIPTION

2-3.

G e n e r a l . The test set consists of the thermal system test controller (TSTC), the

accessory case, the thermal sight coIIimator, the head/gunner/TRU holding fixture, and the

commander's display holding fixture.

Thermal System Test Controller (figure 2-2). The TSTC is contained in a portable

case assembly ( I ). The case assembly (I) consists of a case (2) and case cover (3) which are

joined by eight latches (4). When the cover (3) is in position and the latches (4) are closed, the

case assembly ( I ) is sealed. Four handles (5) on the case (2) permit easy handling. There is also

a fan assembly (6) built into the TSTC case (2). This fan (6) is used to cool the test set. For

TSTC national stock number refer to the components of end item list in volume 1, appendix B.

When the eight latches (4) on the case assembly are unsealed, the case cover (3) may be

removed, exposing the TSTC front panel (7). All TSTC controls, switches, indicators, and test

cable connectors are mounted on the front panel (7). In the center of the front panel (7) there

is a hinged flap (8) which is used to cover either the TIS or the TTS controls. If the operator is

working on the TIS controls, he covers the TTS controls. If the operator is working on the TTS

controls, he covers the TIS controls.

Figure 2-2. Thermal System Test Controller

Volume I

2-5

Para. 2-3