4xem IPVS1A, Руководство пользователя

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authentication and special confirmation in installation can keep 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. 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 separate commands. Each comma represents 200
milliseconds. If the user has some serial control device other than the PTZ camera, the special
URL is provided to send the desired commands. For quick access, integrate the URL to another
homepage on your own web server.
Q. How fast will Video Server check the status of digital inputs?
A. Video Server will check input status in less than half a second. However, to avoid repeatedly
checking conditions too often and to allow the devices connected to digital outputs to function
properly, Video Server will delay 3 seconds by default after each condition matches. Users may
change it according to specific applications. During this period, any condition will be ignored.
Q. Why can I not access Video Server when I setup some options in the application?
A. When Video Server is triggered by events, snapshots will take more time to write them into
memory. If the events occur too often, the system will always be busy storing images. It is
recommended to use sequential mode or external recorder program to record motion pictures if
the event is frequent. If you prefer to retrieve images via FTP, the value could be smaller since
FTP responses quicker than the Web does. Once the system is too busy to configure, use the
restore factory default and reset button to save the system.
Q. I try to connect my black-and-white and color cameras with Video Server but the image is not