Det-Tronics PW9200x Pathwatch IR Gas Detection System - Manual (Page 26)

fins from the bottom of the heat sink (as viewed
when the cover is open, but attached to housing
by its hinges).
If the output voltage is less than the specified
minimum, turn the preamplifier gain potentiometer
clockwise. If the output voltage is greater than
0.5 vdc, turn the preamplifier gain potentiometer
counterclockwise.
13. Once optimum alignment has been obtained,
carefully adjust the locking knob assembly on the
back of all three mounts so that the swivel foot on
the end of the shaft just makes contact with the
back of the front plate. DO NOT overtighten the
locking knob assembly.
14. View the mirror through the receiver alignment
scope to verify that the cross hairs are centered
on the mirror. If the cross hairs are not centered,
and optimum alignment is verified, adjust the
cross hairs to center on the mirror using the
adjustment knobs provided on the scope.
Replace the protective end caps on the alignment
scope.
15. Repeat Step 14 for the transmitter alignment
scope.
NOTE
Optimum alignment must be accurately main-
tained to ensure proper operation of the instru-
ment. Careful adjustment of the alignment scope
cross hairs will enable verification of alignment
accuracy.
16. Recheck that the output has not been affected by
Steps 13 through 15.
17. Remove the receiver window assembly and return
the MODE selector switch on the front panel to
the “operate” position. Replace the window
assembly.
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