b. Transmitter Function.
The transmitter function primarily consists
of the flashlamp and the laser rod in the laser cavity of the transmitter.
When triggered by the microprocessor of the control logic card, the
flashlamp flashes to initiate laser action.
c. Energy Control Function.
The energy control function senses the
laser output level to provide feedback to adjust the laser energy as
necessary. It also triggers and provides the power for the Q/switch. The
Q/switch is the part of the optics that releases the laser beam from the
LD/R.
The energy control card monitors the temperature within the
transmitter and causes a visual alarm if an overtemperature condition
exists.
The receiver function detects the reflected
laser pulse to determine the range to the target.
Depending on the mode
selected, it determines the range of the first or last reflected pulse
received. The digital RNG data goes to the microprocessor, which combines
this data with the AZ and EL data.
e. Display Function.
This function monitors all display data, and
presents the appropriate information in the eyepiece display. The display
assembly controls the output to the RNG, AZ, and EL four-digit indicators,
and the LASER FAIL, FIRE COMMAND, and BATTERY FAIL lights.
f. Control Logic and Microprocessor Function.
The control logic
function interfaces the microprocessor with the various controls and
circuits in the G/VLLD. The microprocessor outputs the timing and control
signals required for firing the laser, activating the receiver, and
monitoring the AZ, EL, and RNG data.
The resolver-to-digital converter
(RDC) monitors the resolver outputs from the resolvers located in the TU,
and converts the six analog signals to digital data for use in the
microprocessor.
PART B - INSPECTION AND GENERAL MAINTENANCE OF THE G/VLLD
This part of the lesson describes the procedures for inspecting the G/VLLD
set, and for performing general maintenance at the direct support
maintenance level. Maintenance personnel inspect the equipment upon receipt
and perform necessary maintenance to ensure that the G/VLLD is in a
serviceable condition.
1.
Upon receipt, conduct an inspection of the G/VLLD set to ensure it is
complete, in operating condition, and all Modification
17
OD1722
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