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There is audio signal in the surveillance window but no audio
signal when playback
Possible reasons:
•
The audio option is not selected.
•
The corresponding channel is not connected with the video.
When the image appears as a blue screen, the playback will be
intermittent.
The time display is wrong.
Possible reasons:
•
The setting is wrong.
•
Internal batteries are not properly connected or the voltage is too
low.
DVR can not control the PTZ.
Possible reasons:
•
The PTZ camera is not connected correctly.
•
The baud rate, address, and protocol settings of the front-end PTZ
and device PTZ are inconsistent.
Motion detection is not working.
Possible reasons:
•
Time is not set correctly.
•
The motion detection area is not set correctly.
•
The sensitivity is too low.
Summary of Contents for UDVR45-4
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