8.2. Frequently asked questions
Q.
What if I forget my password?
A.
Every access to the video server needs authentication. If you are one of the managed
users, you must ask the administrators for the password. If you are the administrators,
there is no way to recover the root password. The only way to regain access to the video
server is to utilize the default setting button on the rear panel to restore the factory settings
and reinstall it.
Q.
Why can I not watch video from the video server after it is authenticated?
A.
There are many possible scenarios:
1. If you have just installed the video server and are unable to watch video, check the video
modulation on the Configuration page.
2. If the video server is properly installed and you are accessing the video server for the
first time using Internet Explorer, adjust the security level of Internet Explorer to allow
installation of plug-ins.
3. If the problem still exists after adjusting, the current users may be more than the system
allows.
Q.
What is the plug-in for?
A.
The plug-in provided by the video server is used to display motion pictures on Internet
Explorer. If your system does not allow installation of any plug-in software, the security
level of the web browser may need to be lowered. It is recommended that you consult your
network supervisors in your office regarding adjustment of the security level.
Q.
Why is the timestamp different from the system time of my PC or notebook?
A.
The timestamp is based on the system time of the video server. It is maintained by a
real-time clock inside and automatically synchronizes with the time server if the video
server is connected to the Internet and the function is enabled. Differences of several hours
may result from the time zone setting.
Q.
Why does the image not refresh regularly?
A.
In a modem environment, it is because the bandwidth of PPP connection is far less than
Ethernet. If the difference of the timestamp is not stable, adjust the UART FIFO lower in
both receiving and transmitting from modem property in the control panel. While in
Ethernet, it may be due to time taken in storing snapshots into memory as events occur.
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 further
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 periodically retrieving images from the video server.
Doc # APN SV11A-M4
Issue Date: 09/14/2006
Revision: A
Page 62 of 6
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