42
Poor
Picture
Quality
Snowy
Image
(cont’d.)
Horizontal
Scan Lines,
Rolling Up
or Down
Negative,
scrambled,
or faded
image
Noisy Power
Supply
Ground Looping on
video cable
24V ac operation
Low voltage
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.
Line Lock adjustment
required.
Check voltage at
input power cable.
Must be >10.5V dc or
>12V ac.
Summary of Contents for EX27
Page 1: ...1 EX27 EX27N EX27D All Weather Cameras INSTALLATION INSTRUCTIONS MAN 27 27N 27D 01 ...
Page 9: ...9 3 EX27 EX27N MECHANICAL SPECIFICATIONS ...
Page 10: ...10 4 EX27D MECHANICAL SPECIFICATIONS ...
Page 15: ...15 FIGURE 8 1 Rear Housing Removal Cap screw ...
Page 16: ...16 FIGURE 8 2 Camera and Lens Access ...
Page 18: ...18 FIGURE 9 2 EX27 EX27D Day Night Switch Adjustment Photocell Adjustment ...
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Page 44: ...44 Notes ...
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