TM 1-1520-238-MTF
4-2
4. SLAVE switch – Press.
5. Sensor select switch – TV or FLIR.
6. Field of view select switch – N.
7. Aim reticle at an easily observed object.
8. BRSIT ENABLE switch – UP. Wait 5 seconds,
then adjust left and right thumb-wheel controls
for drift null.
9. BRSIT ENABLE switch – CENTER.
C. PECHAN ALIGNMENT.
NOTE
Pechan alignment procedures can affect
manual drift null. This procedure aligns the
voltages used to erect the Pechan (DVO)
lens. It should be used in order to establish
a “Real World” relationship when viewing
through the DVO. Should alignment be un-
successful, refer to TM 9-1270-476-20.
1. Sensor select switch – DVO.
2. Field of view select switch – N.
3. TADS turret – Manual control.
4. BRSIT ENABLE switch – UP.
5. Left thumbwheel control – Adjust as required to
correct for 1/2 the necessary alignment.
6. BRSIT ENABLE switch – CENTER.
7. Field of view select switch – W.
