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Daily Maintenance and Glossary
5.
Cannot search local recordings
Possible reasons:
•
HDD ribbon is damaged
•
HDD is damaged
•
Upgraded program is not compatible
•
The recorded file has been overwritten
•
The Record function has been disabled
6.
Video is distorted when searching local recordings
Possible reasons:
•
Video quality setup is too low
•
Program read error, bit data is too small. If there is a mosaic pattern in the full screen—
Restart the DVR to solve this problem
•
HDD data ribbon error
•
HDD malfunction
•
DVR hardware malfunction
7.
Time display is not correct
Possible reasons:
•
Setup is not correct
•
Battery contact is not correct or voltage is too low
•
Crystal is damaged
8.
DVR cannot control Pan/Tilt/Zoom (PTZ)
Possible reasons:
•
Front panel PTZ error
•
PTZ decoder setup, connection or installation is not correct.
•
Cable connection is not correct.
•
Distance from DVR to PTZ is too long
•
PTZ setup is not correct.
•
PTZ decoder and DVR protocol is not compatible.
•
PTZ decoder and DVR address is not compatible
9.
There is a mosaic pattern on the screen—no video when viewing live video or playback file
Possible reasons:
•
Poor network quality
•
Client end resources are limited
•
There is a multicast group setup on the DVR. This mode can result in a mosaic screen.
Usually this mode is not recommended.
•
There is a Privacy Mask or channel protection setup
•
Current user does not have proper rights to monitor
•
DVR local video output quality is of poor quality
DVR7800S-U Series Hybrid DVR User Guide
252
Содержание DVR7800S-U Series
Страница 1: ...DVR7800S U Series Hybrid Digital Video Recorder User Guide...
Страница 17: ...2 Getting Started 1 4 1 Network Connections Figure 1 6 DVR7800S U Series Hybrid DVR User Guide 7...
Страница 52: ...Hybrid Standalone DVR User Guide 3 Local Menu Operations DVR7800S U Series Hybrid DVR User Guide 42...