ADT DVR7800S-U Series User Manual page 265

22. Real-time video color is distorted
Possible reasons:
•
When using BNC output, the NTSC and PAL setup is not correct. The real-time video
displays in monochrome
•
DVR and monitor resistance is not compatible
•
Video transmission is too long or is excessively degraded
•
DVR color or brightness setup is not correct
23. Motion detection function does not work
Possible reasons:
•
Period setup is not correct
•
Motion detection zone setup is not correct
•
Sensitivity is too low
•
For some versions, there is a hardware limitation
24. Remote control does not work
Possible reasons:
•
Remote control address is not correct
•
Distance is too far or control angle is too small
•
Remote control battery power is low
•
Remote control is damaged or DVR front panel is damaged
25. Cannot connect to the IP Camera
Possible reasons:
•
The IPC has not booted up
•
IPC network connection is not online
•
The IPC's IP is in the blacklist
•
The device has to too many connected cameras
•
The IPC port value and time zone are not the same as for the DVR
•
Current network environment is not stable
26. After I set the DVR resolution to 1080P the monitor does not display
Possible solution—Restore DVR resolution to the default setup:
•
Shut down the device and then reboot. When you reboot, press the Fn button at the
same time and then release after 5 seconds.
27. My admin account has been changed and I cannot log in
Possible solution:
•
Use telnet and then input the following command：
cd /mnt/mtd/Config/
rm -rf group
rm -rf password
•
Reboot the device to restore the default password
DVR7800S-U Series Hybrid DVR User Guide
Appendix A Troubleshooting,
Daily Maintenance and Glossary
255