ATN NVM14 User Manual

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C. FLASHING, FLICKERING, OR INTERMITTENT

OpERATION

The image may appear to flicker or flash. If there is more than

one flicker, check for loose battery adapter or weak battery.

Return the ATN NVM-14 to the maintainer.

D. COSMETIC BLEMISHES

These are usually the result of manufacturing imperfections that

do not affect image intensifier reliability and are not normally

a cause for rejecting ATN NVM-14. However, some types of

blemishes can get worse over time and interfere with the ability

to perform the mission. If you believe a blemish is a cause for

rejection, record the specific nature of the problem on the main-

tenance forms and identify the position of the blemish by using

the clock method and approximate distance from the center (e.g.,

5:00 toward the outside, 2:30 near the center, or 1:00 midway).
The following are cosmetic blemishes:

1. Bright Spots.
A bright spot is a small, non-uniform, bright area that may flicker

or appear constant (Figure 5-3).
Not all bright spots make the ATN NVM-14 rejectable. Cup

your hand over the lens to block out all light. If the bright spot

remains, return the ATN NVM-14 to the maintainer. Bright spots

usually go away when the light is blocked out. Make sure any

bright spot is not simply a bright area in the scene you are view-

ing.

Bright spots are acceptable if they do not interfere with

the ability to view the outside scene and the ability to per-

form the mission.