H.264 Network Digital Video Recorder User Manual
Page 52
image becomes black and white.
2 The DVR is 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 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.
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