TM 1-1520-238-MTF
2-35
PROCEDURE
TROUBLESHOOTING
REFERENCE
AFTER STARTING APU (CONT)
(3) ACM switch – Engage. Note
any adverse effects on image
quality; reoptimize imagery as
required.
(4) IAT/IAT OFS check – Slew
turret to a target of relatively
high contrast differential:
(a) IAT polarity switch – Select
appropriate polarity for
image lockon.
(b) IAT MAN switch – Engage.
Verify proper lockon of
selected image.
(c) IAT OFS switch – Actuate.
Verify turret responds to
thumbforce controller
commands and allows
movement about 20
percent of the available
field of view.
(d) IAT OFS switch –
Reactuate. Observe TADS
crosshairs move smoothly
towards IAT target, then
jump suddenly onto the
selected target.
(e) FLIR PLRT select switch –
Verify tracking capability in
both WHT and BLK
positions.
