Digisol DG-CD1020HC User Manual page 72

iv.
v.
vi.
vii.
viii.
12. The motion detect is not working,
Possible reasons are as follows:
i.
ii.
iii.
iv.
13. The image is not clear or there is no image in network preview state or
video file playback state.
Possible reasons are as follows:
i.
ii.
iii.
iv.
v.
vi.
14. Network connection is not stable.
Possible reasons are as follows:
i.
ii.
iii.
The PTZ setting of the DVR is not correct.
The protocols of the PTZ decoder and the DVR are not matched.
The address of the PTZ decoder and the DVR are not matched.
When multiple decoders are connected, the far port of the PTZ
decoder line A (B) must connect a 120  resistance to reduce the
reflection otherwise the PTZ control is not stable.
The distance is too far.
The time range set is not correct.
The motion detect area set is not correct.
The sensitivity is too low.
Limited by some hardware edition.
Network is not stable.
The user machine is resource limited.
Choose the play-in-team mode in the network setup of DVR.
The region shelter or channel protection is set.
The user has no surveillance preview.
The real-time image of the hard disk recording machine itself is not
clear.
Network is not stable.
IP address is conflicted.
MAC address is conflicted.
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DVR User Manual