Clare Controls ClareVision Plus - Network Traffic and Detection

Appendix A
ClareVision Plus Network Video Recorder User Manual 193
The image gets stuck when NVR is playing back by single or multi-channel.
Possible Reasons:
• Poor network between NVR and camera, and there is packet loss during the
transmission
• The frame rate is not the real-time frame rate
• The NVR supports up to 16-channel synchronize playback at the resolution of
4CIF. If you want a 16-channel synchronize playback at the resolution of
720p, frame extracting may occur.
Solution:
1. Verify the network between NVR and camera is connected.
When the image is stuck, connect the RS-232 ports on PC and the rear panel
of NVR with the RS-232 cable.
Open the Super Terminal, and execute the command of “ping 192.168.0.0 –l
1472 –f” (the IP address may change according to the real condition), and
check for packet loss.
Note: Press the Ctrl Plus C to exit the ping command.
2. Verify that the frame rate is the real-time frame rate.
Select Menu > Record > Parameters > Record, and set the frame rate to full
frame.
3. Verify that the hardware can handle playback.
Reduce the channel number of playback.
Select Menu > Record > Encoding > Record, and then set the resolution and
bitrate to a lower level.
4. Reduce the number of local playback channels.
Select Menu > Playback, and clear the check box of unnecessary channels.
5. Check if the fault is solved by the above steps.
If it is solved, finish the process.
If not, contact the engineer to do the further process.