AFTER STARTING APU (CONT)
(2) FLTR SEL switch Actuate to
each available filter. Verify
smooth switching of filters to
(3) AND Observe for appropriate
data display. Verify range of
adjustment of AND rheostat
(4) Optics check Select each
available FOV. Observe
crosshair relationship to Real
World Image. Slew turret using
thumbforce controller observing
for any excessive crosshair
If display image is not reasonably upright, or
if excessive crosshair rotation occurs during
slewing, attempt to correct problem by per-
forming the pechan alignment procedure.
Refer to Chapter 4, paragraph C.
h. FLIR sensor check:
(1) Sensor select switch FLIR.
(2) LVL and GAIN controls
Adjust through full range of
authority noting effectiveness.
Adjust as required for optimum