Edge Glow - ATN Night Shadow 3 Operator's Manual

B. EDGE GLOW
Edge glow is a bright area (sometimes sparkling) in the outer
portion of the viewing area (see Figure 5-2). To check for edge
glow, block out all light by cupping a hand over the lens. If the
image tube is displaying edge glow the bright area will still show
up. Return the ATN NVM-14 to the maintainer.
Figure 5-2
Mode Selector SwitchEdge Glow
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