LevelOne WCS-2030 User's Manual & Installation And Servicing Instructions page 64

Q Why does the image not refresh regularly?
A Some anti-virus programs filter the received web content. It takes time to perform
data examination and affect the streaming application such as the Network Camera.
However it only affects the HTP mode of the Network Camera. If the network allows
only HTTP mode, disable the web filtering function of the anti-virus program
temporarily. During the period, users should be aware of the risk of malicious network
activity.
Q I have opened motion detection windows but it cannot work.
A If the motion detection windows are setup and names are given, check to see if the
function is checked at the first line. While it is enabled, adjust the sensitivity and
percentage to monitor the level indicator for best results.
Q I cannot hear any sound while watching.
A If there is "V_ONLY" shown above the image, click on connection type to uncheck
"Disable audio". If there is "V" shown instead of "AV", the sound card in your PC may
not properly installed. If "AV" is shown, check the audio source of the Network Camera.
Q How many users are allowed to watch the Network Camera at the same time?
A Too many users requesting the real-time multimedia content will jam the network.
For best results, the Network Camera is designed to accommodate maximum ten (10)
users to watch and listen to the Network Camera at the same time. For a larger number
of users, it is recommended to build another web server to host the retrieving contents
from the Network Camera.
Q How fast is the video rate of the Network Camera?
A The MPEG4 codec engine can process 30 frames per second internally. However the
total performance is subject to many coefficients as follows:
1. Network throughput,
2. Bandwidth share,
3. Number of users,
4. The complicated/detailed objects and movement in view,
5. The level of your PC or notebook computer that is responsible for displaying images.
In general, the transfer rate in a general local network environment can achieve over
200 kilobytes per second and approximately 10 to 20 pictures per second from a
regular environment.
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