MIL-V-62475 Vehicle, Fire Support Team, M981 FistvThis specification covers a full-tracked, land combat, fire support team vehicle, with a high degree of tactical maneuverability.

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MIL-V-62475(AT)

4.6.4.22 G/VLLD. To determine conformance to 3.5.23, the G/VLLD shall be operated to verify that it functions according to the specified requirements. Except as otherwise specified herein, any testing involving the G/VLLD requires that the laser inhibit plug be installed. Production G/VLLD simulated firing with inhibit plugs installed shall provide a reference range of 9760.

4.6.4.22.1 G/VLLD remote controls. To determine conformance to 3.5.23.1, the dust cover controls shall be activated and demonstrated to be operational.

4.6.4.23 NSG.

4.6.4.23.1 NSG lamps. To determine conformance to 3.5.24.1, the NSG lamps on the TSCD

front panel shall be observed and timed.

4.6.4.24 Electrical system. To determine conformance to 3.5.25, electrical circuits supplying power to vehicle equipment shall be tested to assure continuity and integrity. Circuits tested for continuity prior to vehicle installation, and targeting station power circuitry and circuit functions shall be verified by evidence of functional performance during operational tests. The vehicle radios shall be operated to verify transmission and reception, and it shall be verified by evidence of operational performance that the FISTV electrical system is compatible with the vehicle power supply, which conforms to the requirements of MIL-STD-1275.

4.6.4.24.1 Winterization equipment. To determine conformance to 3.5.25.1, the FISTV vehicle shall sit idle for the length of time specified at -65°F (-54°C) and then it shall be verified that the engine starts after the cold soak period.

4.6.4.24.2 Emergency power. To determine conformance to 3.5.25.2, the following tests shall be done to verify emergency power. With the vehicle battery and emergency power switched ON and the equipment battery OFF, the TSCD shall be powered up and operated. With the equipment battery and emergency power switched ON and the vehicle battery OFF, the

engine shall be started.

4.6.4.24.3 Lights. To determine conformance to 3.5.25.3, all FISTV vehicle lighting, including running lights, driver's console lights, azimuth position indicator and driver level illuminator azimuth scale illumination, targeting station indicators, TSCD display, dome lights, utility lights and the gooseneck light, shall be operated during and after road testing through all stages of operation.

4.6.4.24.4 Slip ring. To determine conformance to 3.5.25.4, it shall be verified that the slip ring shall provide continuous contact throughout a bi-directional 360 . It shall also be verified that operation of the slip ring shall not cause enough noise or static to degrade required communications.