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Page Title:
Table III. TSCD Indicator Lamps |
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|  MIL-V-62475(AT)
3.5.21.2 TSCD indicators. The front panel of the TSCD shall provide illuminating
indicators. The targeting head status indicators shall prompt the operator as to the status of the
targeting head. Interrupt indicators shall be provided to inform of interrupted turret motion and
laser fire. Fault indicators shall alert the operator that either built-in-test (BIT) has detected a
fault in the TSCD, North Seeking Gyrocompass (NSG) or G/VLLD or their interfaces, or that the
vehicle or equipment battery is low. NSG and G/VLLD indicators shall display the status of
their respective equipment (see table III) (see 4.6.4.20.2).
3.5.21.3 System test. The test key shall provide a menu to initiate the system-test, examine
the current and accumulated BIT status error codes, clear any present faults and observe the NSG
mode and self-test status. The TSCD shall display BIT status by means of three alphanumeric
error codes; a TSCD error code, a G/VLLD error code and a NSG error code (see 4.6.4.20.3).
TABLE III. TSCD indicator lamps.
Indicator
Color
Meaning
HEAD ERECT
White
Targeting head is full erect.
HEAD READY
Green
Targeting head is erect and G/VLLD cradle locks are in
place.
EL ABOVE
Yellow
Head is too high for stow position.
EL BELOW
Yellow
Head is too low for stow position.
EL STOW
White
Head is at proper elevation angle or position to stow.
AZ STOW
White
Head is at proper azimuth angle or position to stow.
(179.5 Minimum, 180.5 Maximum)
HEAD STOW
White
Head is in stowed position.
LASER INTRPT
Yellow
Indicates a condition that will prevent laser fire.
CARGO HATCH
Yellow
Indicates the cargo hatch is not securely closed.
DRIVER HATCH
Yellow
Indicates the drivers hatch is not securely closed.
WPN HATCH
Yellow
Indicates the weapon (targeting station) hatch is not
securely closed.
NSG READY
Green
NSG is in directional-gyro mode.
NSG ON
Green
NSG power switch is on.
NSG ALIGN
Yellow
Steady NSG is in the initialization, or realignment
mode.
Flashing-Vehicle coordinates need to be entered into
VEH GRID memory.
GLLD ON
Green
The GLLD rotary function switch is set at RNG 2
(range 2), RNG 1 (range 1) or DES (designate).
NSG FAULT
Red
The TSCD BIT test or the NSG internal BIT has
detected an NSG fault.
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