Niko 10-575 Mode D'emploi page 39

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6. TROUBLESHOOTING
Any repairs must be carried out by a registered electrician.
1. In case of problems, first check with a multimeter whether the following voltages are present:
• between b and a: approx. +24 VDC
• between b and P: approx. +24 VDC
• between M and P: approx. +24 VDC
• between M and V1 or V2: approx. +5 VDC.
2. If the problem with the device is not solved, go through the following list of possible problems:
Problem
The video image is black/white. The colour saturation was set too low on
The colours of the video image,
or the image in general are too
bright.
There is no contrast in the
colours of the video image.
EN
Cause
the internal unit.
The signal level of the video signal is too
low (< 1 Vpp).
The light intensity stays below the
minimum value of 10 lux causing the
camera to switch to black/white.
The colour intensity was set too high.
The brightness was set too high.
The intensity of the video signal is too
high (oversteering).
The terminal resistor at the end of the
cable has not been installed.
The intensity of the video signal is too
low.
Solution
Adjust the contrast or the saturation
in the configuration software (in
development).
You can adjust the video signal using
a video splitter, among others. Read
the video splitter manual for further
information.
The camera module of the external unit
is underexposed. Ensure that there is
sufficient light.
Lower the colour intensity in the
configuration software (in development).
Lower the brightness manually or in the
configuration software (in development).
Reduce the video signal (this only works
if the terminal resistor has been correctly
attached to the internal unit - see § 4.2.
and fig. 4).
See § 4.2. (fig. 4).
The maximum cable length between two
active video components was exceeded.
Check if the number of connected
internal video units does not exceed the
number of units per cable.
10-575
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