AN/TAS-4 night sight.
Vehicle power conditioner.
Night sight battery pack.
Coolant cartridge pack.
A modification of the equipment set AN/UAS-12 is also used with the
It is designated equipment set AN/UAS-12B.
modified night sight, AN/TAS-4B.
characteristics of the modified equipment differ somewhat from the
original versions, their function with the G/VLLD is the same. To
avoid confusion, only the equipment set AN/UAS-12 and the AN/TAS-4
night sight are discussed in this lesson.
The major component of the equipment set AN/UAS-12 is the AN/TAS-4 night
sight. The AN/TAS-4 night sight detects infrared (IR) energy entering the
front lens and converts it to a visible image viewed through the eyepiece.
The night sight mount, stored in the ancillary equipment transit assembly
case of the G/VLLD, interfaces between the night sight and the TU of the
Controls and Indicators.
The G/VLLD employs a variety of controls and indicators.
Many major and
ancillary components have switches, indicators, plugs and jacks, lenses,
etc., to assist the operator in the use of the set.
a. Laser Designator/Rangefinder. The LD/R, being the major component
of the G/VLLD, includes the majority of the controls. The LD/R houses the
power switch, the mode switch, the trigger switch, and the three code select
The power switch is a three position switch that applies and
removes the power source for the G/VLLD, as well as providing the spring
loaded position of AZ ADJ for equating reference heading. The mode switch
selects the mode of operation; DES, RNG1, or RNG2. The three code switches
set the pulse repetition frequency (PRF) when the G/VLLD is fired in the DES
Two knobs allow you to control the illumination brightness of the
The LD/R also houses the eyepiece of the G/VLLD.
The eyepiece display
provides many critical indications (see figure 1-8). The crosshairs of the
display provide an aiming reference and allows for tracking of the target.
They also indicate the line of sight (LOS) of the laser beam. Three digital
readouts at the bottom of the eyepiece display provide you with information
about the target. Reading from left to right, you find the four