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2.1 SYSTEM DESCRIPTION
The ATN NVM-14 is a hand-held, head-mounted, helmet-
mounted, or weapon-mounted night vision system that enables
walking, driving, weapon firing, short-range surveillance, map
reading, vehicle maintenance, and administering first aid in both
moonlight and starlight. Each unit allows for vertical adjustment
(by using head straps), fore-and-aft adjustment, objective lens
focus, and eyepiece focus. The device is also equipped with an
infrared light-emitting source.
NVM-14 Night Vision monocular utilizes the principle of intensi-
fication of the residual light which is reflected from the surround-
ing objects. The optical system of the monocular consists of: an
objective lens, an image intensifier tube and an eyepiece.
Even under unsteady brightness conditions, Automatic Bright-
ness Adjustment System always keeps the IIT brightness level
constant.
The Automatic Protective System controls the existing illumina-
tion level through the photo receiver. If the illumination level sur-
passes 100-300 lx for the following 10 seconds, the monocular
will shut off automatically
Built-in IR Illuminator makes it possible to observe the objects
when the monocular works in the conditions of low light or total
darkness.
The eyepiece incorporates several LED indicators:
- RED – serves as an IR Illuminator Indicator and an Battery Low
Indicator at a time. IR is on when the indicator light becomes
stable. If the indicator light starts flickering, it means there might
be about 20% of battery charge left.
- GREEN – serves as an Excessive Brightness Indicator. If the
bright light remains unchanged for over 10 seconds after the
indicator turns on, the monocular will automatically shut-off. If
you move the unit away from the bright/excessive light the unit
will turn back on again.