Newcon Optik NSN: 5855-20-000-8284 NVS 7 - Manual (Page 14)

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In the daytime with lens cap on it is normal to observe a fuzzy
image. Switching on the unit device in the daytime is intended
for testing purposes only.
Switching the unit off
After you have finished using the device, turn it off by rotating
switch (1, Fig.1) to OFF position. Put protective lens cap on the
lens. Remove the battery from the battery compartment to avoid
damaging of the device in case of electrolyte leakage.
Operating at night
Take off the lens cover (6, Fig.1) from the lens (7, Fig.1).
Turn on the device using switch (1, Fig.1). If lighting is
insufficient, turn on the IR illuminator by turning switch
(1, Fig.1). The red indicator (Fig. 3) will go on. IR
illuminator is effective when observing an object located
not far from the viewer.
The IR illuminator is visible to anybody with a night
vision device.
You can raise the unit up for unobstructed vision without
taking the headgear off by using the “flip/flop” feature
(Fig. 2). To do so: press the lever (9) and raise the device
into vertical position, until you hear a click.
Reverse the operation for a working position.
Adjusting to individual vision
Turn on the device. Direct the device at an object placed within
8-15 m from the viewer. Obtain the sharpest image possible on