Vivotek VS3102 Installation Guide download pdf (Page 80)

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Q. How does the Video Server detect the supported PTZ cameras automatically?

A. If there is no camera detected; the Video Server will monitor the CTS of the camera control cable

continuously. As long as the CTS are detected, the Video Server will try to handshake with supported

cameras until a supported camera is found. There is no more camera detection once a PTZ camera is

recognized.

Q. How many users are allowed to watch the Video Server at the same time?

A. Basically there is no limitation of users. However the video quality also depends on the network

bandwidth. To achieve the best effect, the Video Server will allow several users to be connected. It is

recommended to build another web server to host a large quantity of users by retrieving images from the

Video Server periodically.

Q. How fast is the video rate of the Video Server?

A. The MPEG4 codec 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 objects in view results in larger image file.

5. The level of your PC or notebook which 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 of a normal environment per second.

Q. How can I keep the Video Server as private as possible?

A. The Video Server is designed for surveillance purposes and has many flexible interfaces. The user

authentication and special confirmation in installation can keep the Video Server from unauthorized

access. You may also change the HTTP port to non-public number. You can check the system log to

examine any abnormal activities and trace the origins.

Q. I have a PTZ camera that is not on the supported list. How can I control it?

A. The Video Server provides a custom camera command interface to control the cameras that are not

supported. The details are described in the manual. Be sure the COM port settings are applied to the

camera specification. The camera control cable included is shown in the package content. Prepare your

own cable if necessary. The general PTZ command is composed of one start command and one stop

command. When editing both commands in the edit box of the configuration page, use comma(s) to

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Vivotek VS3102 Installation Guide Page 80