User manual MINOX NV400

[. . . ] The small opening in the center of the cap is adequately dimensioned for daylight use. When you look through the eyepiece you will see a bright, green, fluorescing image. When you look through the eyepiece you will still see the green image for a few minutes, before it disappears. This is normal and not a General Notes This top quality optical-electronic product is fitted with a Generation 2+ residual light amplifier. [. . . ] This is normal and not a fault, because the Night-Vision scope always switches off gradually. Important note: For longer battery service life we recommend you not to leave the Night-Vision scope switched on continuously. It is better to switch it off every now and again. Save keeping To protect the lens always fit the lens cap before putting the Night-Vision scope away in the every-ready case. Important information To avoid irreparable damage to your Night-Vision scope, please always observe the following instructions: - If you wish to use the device in daylight, never remove the lens cap. The small opening in the center of the cap is adequately dimensioned for using the device in daylight. - Always insert the batteries as specified and observe correct poling. - Remove the batteries from the battery compartment if the device is not being used for a prolonged period. - Always cover the lens with the lens cap when not in use. - Do not expose the device to direct sunlight. - Do not keep the device under extremely low or high temperatures. - Do not keep the device in damp, dusty or dirty areas. - Keep the device safe from any external influence. - Never subject the device to knocks or impact. Troubleshooting The Night-Vision scope does not switch on Check that the batteries are correctly installed. Turn the eyepiece adjustment until you get a sharp image. Then turn the lens focusing ring to improve the sharpness further. Flashes During the first two minutes after switching on the scope, flashes may occur. If this flashing continues the surrounding area may be too bright. This can occur even with mounted lens cap. In darker surroundings the flash occurrence will become less or cease completely. The device fogs up If the device is used at low temperatures and is then suddenly exposed to a warmer ambient temperature, condensation may develop on the cold surface of the device. It can take up to 5 hours before the scope has acclimatized to the ambient temperature. Advice on care Protect the Night-Vision scope against falling, damp, dirt and extreme temperatures. [. . . ] This is not a quality fault but a typical feature of nightvision equipment of this type. Light power of image tube lessens The light power of the image tube decreases in the course of its service life. When the Night-Vision scope is used correctly the service life is approximately 10, 000 hours. The service life is reduced if the Night-Vision scope is exposed to strong light sources such as street lamps or headlights/spotlights. The image tube is defective The image tube is subject to natural wear. [. . . ]