How to use night vision devices (generic version)
1. Night vision devices are precision optoelectronic instruments used to observe targets at night and in low light. In order to meet the need to work in very low illumination, most night-vision devices are equipped with infrared emitters.
2. It is forbidden to turn on night vision devices during the day without a protective cover. In the light of the house to check the working performance of the night vision device must be carried out in the night vision device with a mirror cover, in the bright light of the environment does not exceed 3 seconds. And the night vision device should not be facing a strong light source, strong light into the night vision device may be damaged or reduce the service life of the night vision device. And may hurt the user's eyes, when the bright light into the night vision device its brightness will be reduced or even disappear. This is the instrument's automatic protection function works, at this time, the night vision device should be immediately taken away from the strong light source. Users should not start the instrument again, after 1-2 minutes, the night vision instrument function will be restored. Particularly strong light sources can cause damage to the night vision device (e.g. daytime for ten seconds)
3. The night vision device allows strong flashes and flickers within 1 minute. The flare observed in the field of view, also called ghosting, is not a defect of the night vision device, but is caused by an external light source irradiating the lens. Night vision device will not appear flare when working in total darkness, night vision device observed when feeling the existence of a small number of black spots and bright spots is not its quality defects, but in line with the quality standards of the night vision device. The night vision device is prohibited to be opened during the daytime when there is no protective cover.
4. night vision device in a cold room to save or after winter transportation, before using again must be in a warm room to wait a few minutes. Otherwise the lens will fog up and affect the observation.
5. Night vision devices are generally suitable for use in the ambient temperature -30 degrees to 30 degrees, temperature 25 degrees relative humidity of 93%, local illumination 5.10 ˉ lux or below. Levels can reach -50 degrees to 70 degrees
6. Night vision device operating time.
Without turning on the infrared illuminator:
--- When the temperature is above 0 degrees --- 5-20 hours
---When the temperature is -30 degrees - 2-3.5 hours.
With infrared irradiator on:
--- At temperatures above 0 degrees - 2-5 hours
--- At temperatures below -30 degrees - 1-5 hours
The night vision device must be placed in a warm place before working below 10 degrees and turning on the battery.
7. The night vision device should be stored in a clean place, avoiding heavy pressure, mechanical damage, humidity, and solar radiation.
