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Check if it is cut, or cross‐wired, or shortened for the video cable to connect the
camera ,and the DVR.
Check if there is a high voltage wire around the video cable connecting the
camera to the DVR system. It can cause the noise problem to decrease video
quality.
Check if it is correct for the video cable to connect camera to the DVR system.
When a normal power‐supplying cable is used instead of the video cable,
screen noise can be generated.
9. Sometimes system itself restarts.
System itself can restart due to watchdog function when any problem occurs to
the DVR.
10. The connected sensor is not working.
Check if the type of sensor in event setup menu is the same as the connected
sensor.
Check if system is set to use the sensor in record schedule window from the
recording setting menu.
Check if power cable of the sensor is properly connected.
Check if signal cable of the sensor is properly connected.
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