Armasight NAMPVS700133DB1 PVS7 GEN 3 Bravo Night vision goggles - Manual (Page 31)

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E. Use of the 3X or 5X Magnifier Lens Assembly. When the sacrificial window is removed, the 3X or
5X magnifier lens assembly can be threaded directly into the 1X objective lens.
NOTE:
The neck cord can be used to tether the magnifier to the operator, in order to prevent losing
the lens if it is dropped. To use the neck cord, tie the end without the clip tightly around the
magnifier and attach the clip to a buttonhole, belt loop or other convenient point.
F. Infrared (IR) Operations
WARNING:
Light from the IR illuminator is invisible to the naked eye in extreme darkness. However, it can
be detected by other night vision devices.
1. Pull the RESET/OFF-ON-IR/PULL switch knob (Figure 2-1) out and rotate clockwise to the IR position.
With the PVS-7 held to the eyes, observe that a red light appears in the left eyepiece. This indicates
that the IR illuminator is operating. When spring loaded momentary IR position is used, the illumina-
tor should only flash on.
2. To Operate with the IR Spot/Flood Lens: Pull the RESET/OFF-ON-IR/PULL switch knob out and rotate
clock-wise to the IR position. With the PVS-7 held to the eyes, turn the IR spot/flood until you have
achieved the optimum illumination of the desired distance. Turn the RESET/OFF-ON-IR/PULL switch
counterclockwise to the ON position. Observe that the red indicator disappears.
3.3.4 PREPARATION FOR STORAGE
A. Shut down.
Perform the following procedures to shut down the PVS-7.
1. Turn the RESET/ OFF-ON-IR/ PULL switch OFF.
2. Remove the PVS-7 from the head mount or helmet mount (if applicable) by depressing the latch lever
(Figure 3-1) and removing the PVS-7 from the head mount socket.
B. Packaging After Use.
1. Unscrew the battery cap and remove the battery(ies).
2. Inspect the battery compartment for corrosion or moisture. Clean and dry if necessary.
3. Replace the battery cap.
4. Remove the demist shields, sacrificial window or compass assembly if installed. Replace the lens
cap.
FIGURE 3-12. PVS-7 WITH MAGNIFIER LENS ASSEMBLY INSTALLED