Controls and Indicators.
The G/VLLD employs a variety of controls and indicators. Several major
and ancillary components have switches, indicators, plugs and jacks,
lenses, etc., to assist you in using the set.
a. Laser Designator/Rangefinder (figure 1-9). The LD/R, the major
component of the G/VLLD, includes the majority of the controls. The LD/R
houses the power switch that allows you to apply/remove power to/from the
Additionally, the power switch has a third position, AZ ADJ.
Spring loaded to the OFF position, this position allows you to equate the
reference heading. The MODE switch allows you to select the operating
mode, DES, RNG1, or RNG2.
On top of the LD/R are three code select
You set the code select switches to select the pulse
repetition frequency (PRF) when the LD/R is in the DES mode. Labeled A,
B, and C, you read the code switches from A to C, with A the most
The code determines the PRF for the laser pulse
The TRIGGER switch, of course, allows you to fire the LD/R. Depending
upon the mode selected, the trigger allows the appropriate pulse or
pulsetrain to be transmitted.
The TRIGGER switch is a spring-loaded
toggle switch. You use it in conjunction with the folding handle. The
handle, when in the down position, serves as a trigger grip. When in the
up position, the handle serves as a cover for the POWER switch.
handle release button allows you to rotate the handle to the desired
In addition to the above switches, the LD/R allows you to make certain
desirable adjustments. The display brightness knob allows you to adjust
the illumination of the readouts and indicators. By rotating the display
brightness knob fully clockwise until it clicks into place (detent), you
test the illumination of all readouts, code and status indicators, and
The reticle brightness knob allows you to separately control the
illumination of the reticle.
Also, an adjustment ring around the
eyepiece display allows you to adjust the focus of the reticle. This
eyepiece display provides you with many critical indications (see figure
The crosshairs of the display provide an aiming reference and allow for
tracking of the target. They also indicate the line of sight (LOS) of
the laser beam. The crosshairs (elevation and azimuth) are graduated in
10 MIL divisions. A third scale (burst resolution), located on the left
edge of the display, estimates the height of an artillery air burst from