VI
Appendix G: Troubleshooting
1. General
Q: Network indicator is not lit.
1.
Check the network cable connection
2.
Verify the network is working, you can ping an existing device on the network.
3.
Power off DVR, wait at least 20 seconds, power on DVR and verify again.
Q: Bad video quality.
1.
Raise the video quality setting.
2.
Check video quality from cameras.
3.
Adjust VGA color to be at least 65536 color.
4.
Try adjusting 75 Ohm terminating resister.
Q: No video
1.
Check video cable, connector, power of camera. Use a TV set to verify the functionality of cameras.
2.
Check the corresponding Q&A of each running mode of DVR for this problem.
Q: Cannot control PTZ camera
1.
Check cable connection and power of the camera.
2.
COM2 parameters are not correct, or not accommodate with the PTZ device.
3.
ID of the PTZ camera is not set correctly.
4.
Switch the power of both DVR and PTZ camera.
5.
DVR do not support this type of PTZ camera.
2. Network
Mode
Q: Cannot access DVR from browser.
1. Verify network cable is well connected to hub and the network is good.
2. Make sure you are using IP in the same subnet of DVRN.
3. Clear the ARP list.
4. If you are running MS Proxy Client on your PC, and the IP assigned to DVR is not a valid local IP on
the network. Try to allocate a valid local IP to DVR or disable MS Proxy Client from the Control
Panel.
5. If you can ping the IP of DVR, disconnect DVR from network and ping this IP again. If there is a
response, then you have a duplicated IP address on the network.
6. Clear your browser’s cache and make browser to check if there is newer version of web page at every
visit.
7. If you still cannot access DVR, try disable proxy in your browser.
Q: You can access DVR in intranet, but failed to access it in internet.
1. Verify your intranet is connected to internet.
2. Verify if a valid public IP is assigned to DVR or a valid public IP is mapped to a valid local IP
assigned to DVR.
Q: No Video.
1. Reload
this
page.
2. Check the General Q&A about this problem.
3. Clear your browser’s cache and make browser to check if there is newer version of web page at every
visit.
