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7. Replace the lens cap or the sacrificial window onto the end of the
objective lens and over the LIF.
CAUTION
BE CAREFUL NOT TO TOUCH THE GLASS SURFACES. IF YOU
GET FINGERPRINTS OR CONTAMINATION ON THE GLASS
SURFACES, USE LENS PAPER TO CLEAN THE LIF. IF MOIS-
TURE IS NEEDED, USE YOUR BREATH TO MIST THE SURFACE
OF THE GLASS.
DO NOT OVER-TIGHTEN THE LIF INTO THE OBJECTIVE LENS.
NOTE
The lens cap, compass assembly, or the sacrificial window will fit
onto the end of the objective lens with the LIF in place.
H. Installation of the IR Spot/Flood Lens.
1. Press the IR spot/flood lens over the IR source until it is tight
against the goggle. Refer to Figure 2-6.
Figure 2-6. Installation of the IR Spot/Flood Lens
I. Installation and Adjustment of the Head Mount Assembly.
Perform the following procedures for donning the head mount.
NOTE
Do not don the head mount while the PVS-7 is attached to it.
2-16
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