NVS 6
MANUAL
For balancing out the overturning momentum produced by the unit in the operating position, use is made of counterweight (9) secured on the rear portion of the helmet.
The helmet should be tailored for employment of the night-vision goggles. For this purpose, the standard casing should be replaced and the strip of the sticking fastener should be bonded to the helmet rear surface for attachment of the counterweight (the necessary appliances are included in the set of spare parts).
Note: other helmets may require different mounting mechanisms
5.3.5Caps (12) are intended to safeguard the image intensifier tubes against exposure to light and protect the optical components of the lenses from mechanical damage.
The caps are provided with holes for checking the night-vision goggles for serviceability at an illumination intensity of more than 1 lx (in conditions of day light and dusk), as well as with retainers (two spring- loaded projections located on the cap sides) used for reliable locking of the cap in the mount of lens (1).
Small projections in the sides of the cap are provided, with holes for joining the caps, in pairs by means of a fishing line. This will minimize their inadvertent loss in service.
5.3.6The moisture-resistance of the unit is ensured with the use of annular rubber seals and dehydrator cartridges (13). These are intended to absorb moisture in case it gets into the interior space of the monocular pair. The dehydrator cartridge is filled with silica gel that is bluish in color when it is not saturated. As the silica gel gets saturated, it turns rose-pale or off-white. The external condition of the silica gel is monitored through sight glass (14).
5.4The NVS 6 standard set comprises the night-vision goggles, the voltage converter and the single set of spare parts. (Optional)
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