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|  MIL-T-45379D(AT)
3.5.9.5.2.5 Range return selector switches. With laser rangefinder power applied, operation
of the "1", "2" or LAST range return selector switch shall cause the LRF to select the first,
second or last (up to three) range return for display and for automatic insertion into the computer,
in the AUTO mode if first or LAST were selected. Upon initial application of LRF power and
after each acutation of the RESET switch, the LRF shall automatically select the LAST range
return (see 4.6.4.9.5.2.5).
3.5.9.5.2.6 Remote range reset switch. With the RANGE switch light flashing and the LRF
in the AUTO or ON mode, actuation of the remote range reset switch on the gunner's left control
handle shall cause the LRF to reset and perform a ranging operation (see 4.6.4.9.5.2.6).
3.5.9.5.2.7 Malfunction light. With LRF power applied, the LRF in AUTO or ON modes
and the RANGE switch light flashing operation of the RANGE switch or remove range reset
switch, shall not cause illumination of the malfunction (MALF) light nor cause illumination of a
2, 3, or 4 on the last digit of the range display (see 4.6.4.9.5.2.7).
3.5.9.5.2.8 GO light. With LRF power applied and the RANGE switch illuminated,
operation of the RANGE switch or remote range reset switch shall cause the GO light to
illuminate when a target range has been transferred to the computer. All switch buttons except
RESET and BATTLE RANGE are inoperative after the GO light has been illuminated
(see 4.6.4.9.5.2.8).
3.5.9.5.2.9 SELECT light. With LRF power applied and the RANGE switch light flashing,
actuation of the RANGE switch or remote range reset switch shall cause the select light to
illuminate when no range has been transferred to the computer (see 4.6.4.9.5.2.9).
3.5.9.5.2.10 FEED switch. With LRF power applied, the SELECT light illuminated, and a
range indication of greater than 200 m but less than 5000 m, actuation of the FEED switch shall
cause transfer of the indicated range to the computer. The SELECT lamp shall be extinguished
and the GO light illuminated. When range indication is outside the specified limits, the FEED
switch shall be ineffective (see 4.6.4.9.5.2.10).
3.5.9.5.2.11 LIGHT rheostat. Rotation of the LIGHT control shall vary the illumination
level of all panel lights except the RANGE and RETURN readouts. Turning the control fully
clockwise to the TEST position shall cause all RANGE and RETURNS readout digits to
indicate 8 (see 4.6.4.9.5.2.11).
3.5.9.5.2.12 Emergency power switch. With vehicle power on, but computer power off,
operation of the emergency power switch on the electronics unit shall provide LRF power and
allow normal operation of the LRF (see 4.6.4.9.5.2.12).
3.5.9.5.2.13 Battle range switch. Battle range switch shall index a fixed range of
1200 meters into the computer and shall cause (see 4.6.4.9.5.2.13):
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