Clare Controls ClareVision Plus, User Manual

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Appendix A
ClareVision Plus Network Video Recorder User Manual 187
The CAMERA frequently goes online and offline and the status of it
display
s as “Disconnected”.
Possible reasons:
•
The camera and the NVR versions are not compatible
•
Unstable power supply
•
Unstable network between camera and NVR
•
Limited flow by the switch connected with camera and NVR
Solution:
1. Verify the camera and the NVR versions are compatible.
Enter the CAMERA Management interface (Menu > Camera > Camera > IP
Camera), and view the firmware version of connected CAMERA.
Enter the System Info interface (Menu > Maintenance > System Info > Device
Info), and view the firmware version of NVR.
2. Verify power supply of CAMERA is stable.
Verify the power indicator is normal.
When the camera is offline, try the ping command on the PC to check if the
PC connects with the camera.
3. Verify that the network between camera and NVR is stable.
When the CAMERA is offline, connect PC and NVR with the RS-232 cable.
Open the Super Terminal, use the ping command, and keep sending large
data packages to the connected CAMERA. Check if there is a packet loss.
Note: Press Ctrl Plus C to exit the ping command.
Example: Input ping 172.6.22.131
–l 1472 –f.
4. Verify that the switch is not flow control.
Check the brand, model of the switch connecting camera and NVR, and
contact the switch manufacturer to check if it has the function of flow control.
If so, turn it down.
5. Check steps 1 to 4 for resolution.
If it is solved, finish the process.
If not, contact the engineer to do the further process.