CompuLan Center dba/Digital IDView Technologies
12000 Ford Road, Suite 110
, Dallas TX 75234
83
Possible reasons are as followed:
1
When using the BNC output, the option between the N mode and PAL mode is wrong and
the image becomes black and white.
2
The DVR does not matched the monitor impedance.
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 can not 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 no 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 can not control the PTZ.
Possible reasons are as followed:
