TM 1-1520-238-MTF
4-3
Change 4
8. Right thumbwheel control – Recheck alignment
of crosshair and horizon.
a. If satisfactorily aligned, procedure is
complete. Select desired operating mode.
b. If not satisfactorily aligned:
(1) BRSIT ENABLE switch – UP.
(2) Adjust right thumbwheel control as
required to align horizontal crosshair
with horizon.
(3) BRSIT ENABLE switch – CENTER.
(4) Field of view select switch – N.
(5) Reverify alignment of NFOV. If
satisfactory, procedure is complete. If
unsatisfactory, repeat steps 4 thru 8
above as required. If still unsatisfactory,
see note above.
9. Repeat steps 5 thru 8 as necessary to erect the
pechan (DVO) lens.
10. Recheck manual drift null.
D. MANUAL BORESIGHT ADJUST.
NOTE
The manual boresight procedure is used
only to recapture or center the laser spot.
It is not an acceptable boresight proce-
dure for normal flight operations.
TADS internal boresight shall be per-
formed after performing TADS manual
boresight adjustment.
1. LSR select switch – ON.
2. Sensor select switch – FLIR.
