TM 1-1520-238-10
4-38
Table 4-12.
ORT and Hand Controls/Display Functions – continued
Control/
Display
Function
Position
Left Side of ORT
LVL
Adjusts the FLIR level.
GAIN
Adjusts the FLIR gain.
RNG FOC
Adjusts the narrow FOV focus in DTV or FLIR. Minimum distance that may be focused
in narrow field of view is 500 meters.
GS
Activates the gray scale for the CPG. On some TADS systems, one or more video
displays may be in gray scale after power up on completion of FD/LS.
VID SEL
Selects the video source to be displayed to the CPG.
TADS
Displays the video from the CPG selected sight.
PNVS
Displays the video from the pilot selected sight.
IRIS
Displays the video from the IRIS missile; growth position, currently will mode the ORT
displays for 525 line video format.
NT
Actuates the heads down display red night filter.
V/RET
This function has been deleted. The switch is inactive.
Right Side of ORT
ACM
This switch is utilized to maintain optimum gain and level settings as a result of
varying thermal scene content or when switching FLIR polarities.
SYM BRT
Adjusts the symbology brightness. Range is: bright white through black.
DSPL BRT
Adjusts heads up or heads down display brightness. When an IHADSS mode is
selected on the SIGHT SEL switch, this control adjusts HDU brightness.
DSPL CONT
Adjusts heads up or heads down display contrast. When an IHADSS mode is selected
on the SIGHT SEL switch, this control adjusts HDU contrast.
AND BRT
Adjusts alphanumeric display brightness.
FLTR SEL
Permits selection of various optical filters when sensor select is DVO. This switch will
change the various DVO filters. In the optically improved (OI) TADS, filter selection
can also be made when sensor select is FLIR. The FLIR filters are used as
countermeasures protection.
When
sensor
select is
DVO
CLEAR/
CLEAR
Selects a clear filter for DVO.
