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ATN NVM14 User Manual

Page 40

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5-6

4. Fixed-Pattern Noise.
This is usually a cosmetic blemish characterized by a faint hex-

agonal (honeycomb) pattern throughout the viewing area that

most often occurs at high light levels or when viewing very bright

lights (See Figure 5-4). This pattern can be seen in every image

intensifier if the light level is high enough.

This condition is

acceptable as long as the pattern does not interfere with

viewing the image and interfere with the ability to perform

the mission.

Figure 5-4

Fixed Pattern Noise