3
The video transmission distance is too far or the loss of the
video transmission line is too large.
4
The color and brightness setting of the DVR is wrong.
6.
I cannot find the video files in local playback mode.
Possible reasons are as followed:
1
The data line of the hard disk is damaged.
2
The hard disk is damaged.
3
Update the different program with the origin program files.
4
The video files to look up are covered.
5
The recording is not on.
7.
The local video is not clear.
Possible reasons are as followed:
1
The image quality is too bad.
2
The reading program is wrong. Reboot up the DVR.
3
The data line of the hard disk is damaged.
4
The hard disk is damaged.
5
The hardware of the DVR is damaged.
8.
There is no audio signal in the surveillance window.
Possible reasons are as followed:
1
It is not an active tone arm.
2
It is not an active sound box.
3
The audio lines are damaged.
4
The hardware of the DVR is damaged.
9.
There is audio signal in the surveillance window but mo audio
signal in the playback state.
Possible reasons are as followed:
1
Setting issues: the audio option is not chosen.
2
The according channel is not connected with the video.
10.
The time is wrong.
Possible reasons are as followed:
1
Setting is wrong.
2
The battery is in bad connection or the voltage is too low.
3
The oscillation is damaged.
11.
The DVR cannot control the PTZ.
Possible reasons are as followed:
1
There is something wrong with the frontal PTZ.
2
The setting, connection or the installation of the PTZ decoder
is not correct.
3
The connections are not correct.
4
The PTZ setting of the DVR is not correct.
5
The protocols of the PTZ decoder and the DVR are not
matched.
6
The address of the PTZ decoder and the DVR are not
matched.
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