Bosch EX49N Installation Instructions Manual page 28

Poor
Picture
Snowy
Image
Hazy Image
Horizontal
Scan Lines,
Rolling Up
or Down
Negative,
scrambled,
or faded
image
Poor Video
Signal
Noisy Power
Supply
Condensation
Inside dome
Ground
Looping on
video cable
Low voltage
Ensure the video cable is
correctly matched and
terminated with 75 ohms at
each end. Make sure the video
cables are similar types.
Check connections. Relocate or
replace the power supply.
Ensure all openings are sealed
with silicone and dome is
aligned properly. Ensure
product was not installed during
high humidity and that the
desiccant pack has not been
removed.
Check the coax cable shield is
not touching ground, e.g. at
couplings.
Check video polarity.
Check voltage at the input
power cable.
Must be >10.8V DC or AC.
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