Poor Color
Picture
Quality
Dim Image
Snowy Image (cont’d.)
Horizontal Scan Lines, Rolling Up or Down
Negative,
scrambled, or faded image
Iris closed
Noisy Power Supply
Ground Looping on video cable
Low voltage
Increase iris level on lens
Check connections. Relocate or replace power supply.
Check the coax cable shield is not touching ground, e.g. at couplings.
An electrically isolated circuit board or isolation transformer may be required.
Check voltage at input power cable.
Must be >12VDC/VAC.
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