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2. OVERVIEW
The day / night binocular BDN 7x50 is an observational
optical-electronic device, intended for examining objects and
orientation in both day and nighttime or under twilight conditions. The
unit utilizes 2 (two) image intensifiers, which amplify available
moonlight, starlight or synthetic light. The binocular was designed to
be easy in use and provide many years of operation.
Some of the typical activities where the BDN 7x50 Day / Night
Binocular can be useful:
♦ law enforcement
♦ wildlife observation
♦ security
♦ search and rescue
♦ hunting
Features
♦ Daytime channel provides clear observation through high quality
glass optics;
♦ Nighttime channel comprises two image intensifiers, one for each
eye, thus providing stereo vision;
♦ Built-in infrared illuminator allows observations in total darkness
(i.e. basement, cave or dark room);
♦ Independently adjustable eyepieces;
♦ Inter-pupilary distance adjustment;
♦ Lightweight and comfortable;
♦ Soft rubberized foldable eyepieces make the viewing more
comfortable for glass wearers;
♦ Water-resistant;
♦ Works with standard AA batteries.
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Adjust the focus and interpupillary distance as was described in
paragraph 6.2. In case of insufficient lighting when observing an
object, which is located not far from you, turn on the infrared
illuminator by pressing and holding the ‘IR On’ button (11). As
soon as the ‘I/R On’ button is released the infrared illuminator
turns off.
Note: The illuminator lights on only if the unit has been
already switched on by the button (7).
Note: If you look directly at front of the binocular when I/R
illuminator is on it appears as a red dot at a size of a lit cigarette.
The illuminator can be also detected using night vision device.
Therefore, if you need to remain undetected, use the illuminator
with caution.
Note: The unit automatically turns off after few minutes. This
feature can be used to economically utilize the batteries power by
periodically switching on and off the device during operation.
If brightness of the screen decreases, replace the batteries. Put
protective lens caps back on the lenses after operation. If you don’t
intend to use the device during long time remove the batteries
from the battery compartments to avoid any damage of the device
in case of occasional leakage of electrolyte from the batteries.
7. TROUBLESHOOTING
The binocular does not work.
Check if the batteries are installed properly.
Check the charge of the battery. Replace if they are weak.
The image does not appear in focus.
Bring the inspected object to the center of the image. Turning the
eyepieces (8) adjust the focus trying to achieve the clearest image
on the screen. Repeat the steps of focusing if necessary
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