QNAP Security VioStor NVR (Version: 3.5.1) - Manual (Page 238)

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4. I cannot login the administration page of the NVR.
Please check if you have the administrator authority. Only administrators are allowed
to login the NVR.
5. The live video is not clear or smooth sometimes.
a. The image quality may be restricted and interfered by the network traffic.
b. When there are multiple connections to the IP camera or the NVR, the image
quality will be reduced. It is recommended to allow only three simultaneous
connections to the monitoring page at maximum. For higher recording
performance, do not open too many IE browsers to view the live video.
c. The same IP camera may be shared by multiple NVR servers for recording at the
same time.
6. The alarm recording does not function.
a. Please login the NVR and go to ‘Camera Settings’ > ‘Alarm Settings’. Make sure
the alarm recording is enabled for the IP camera.
b. When using Panasonic BB-HCM311 cameras, the camera firmware must be
upgraded to v1.3 for the alarm recording to work properly.
c. If the NVR is installed behind a router while the IP camera is not, the alarm
recording will not work.
d. When the alarm recording is enabled, make sure the number of days that the
alarm recordings will be retained have been specified in ‘Camera Settings’ >
‘Advanced Settings’. Otherwise, the recordings may be overwritten.
7. The estimated storage space for recording displayed on the ‘Recording
Settings’ page is different from the actual value.
This estimated value is a reference value only. The actual disk space may vary
according to the image contents, the network environment, and the performance of
the IP cameras.
8. The monitoring screen shows horizontal lines when the resolution of
Panasonic BB-HCM381 camera is set as 640x480.
This is due to the interlaced scanning design of the camera. Please login the
configuration page of the IP camera and go to ‘Setup’ > ‘Camera’ > ‘Vertical
Resolution’. Configure the resolution setting as 240.