H.264 Super Digital Video Recorder User Manual
69
display time.
5
The recording is not on.
7
、
The local playback video is not clear.
Possible reasons are as followed:
1
The recoding 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 can not 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.
7
When multiple decoders are connected, the far port of the PTZ decoder line A (B) must
connect a 120
Ω
resistance to reduce the reflection otherwise the PTZ control is not
stable.
