6. OPERATION INSTRUCTIONS
WARNING!
NEVER TURN ON THE NIGHT VISION CHANNEL IN DAYLIGHT AREAS WITHOUT THE LENS COVERS ON! NEVER DIRECT THE LENSES IN THE DIRECTION OF BRIGHT LIGHT!
6.1.
6.2.Daytime operations. Move the switch (5) to the Day position (letter “D” is visible). Open the lens covers (1). Aim the device to any distant object and try to achieve the sharpest image by eyepieces rotating. Each eye adjusts independently. Adjust the interpupillary distance by folding and unfolding the device around the central hinge until two images merge into one. If you wear glasses fold the eyepiece rubber guards (9) to obtain closer focus distance.
6.3.Night channel testing. Check the functioning of the device by switching it on (press and hold button 7) and looking through the eyepieces (8). (Make sure the lens caps are on in a daytime). If the batteries are installed and function properly, you will see
Note: The unit will remain on for up to several minutes after releasing the power button. This is normal.
6.4.Nighttime operations. Take off the lens covers (1) from the lenses (2). Turn the device on by pressing and holding the ‘On’ button
(7). Aim the device to an object placed within
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Warning! After transportation or keeping the device at temperature lower than
Precautions
BDN 7x50 is a sophisticated precision optical instrument equipped with electronics. Therefore, it should be handled with due care.
♦Keep your device away from direct sunlight, impacts, dust, moisture, and sudden changes of temperatures.
♦Cleaning of optical surfaces is possible only with professional camera lens cleaning supplies.
♦Do not touch optical surface with fingers. Doing so may damage the
♦To clean the exterior of the device, use only a soft clean cloth.
♦Do not take the covers off the lenses if not necessary.
♦Keep away from heating appliances and central heating.
♦Make sure to switch off the unit during periods of non- operation and when storing the device for long period.
♦Do not apply superfluous efforts at work with lens assembly, agile elements and thread connections.
Due to considerable optical magnification of the eyepieces some small structures inside the tube coating may be seen in the field of view in the form of dark and/or white points, which does not affect the serviceability of the device
At night, the resolving power (resolution) may change in the direction from the center towards the perimeter of the field of view. This is an inherent feature of the image intensifier tube type utilized in the device. We would recommend placing the scene of observation in the center of the field of view.
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