User guide

Chapter 6: Using the Video Viewer 181
To enable or disable background refresh:
1. Select Tools - Session Options from the Video Viewer window menu.
-or-
Click the Session Options button.
The Session Options dialog box appears.
2. Click the General tab.
3. Select Background Refresh to enable the option.
-or-
Uncheck Background Refresh to disable the option.
4. Click OK.
Adjusting color depth
NOTE: The View - Color command may only be used by the primary user. The command is not available to non-
primary users who are sharing the session.
The DS1800 digital switch or DSR switch Dambrackas Video Compression
™
(DVC) algorithm
enables DSView management software users to adjust the number of viewable colors in a remote
session window. You may choose to display more colors for the best fidelity, or fewer colors to
reduce the volume of data transferred on the network.
The DVC algorithm upgrade is standard on all DS1800 digital switches and DSR switches
supported by the DSView software.
Video Viewer windows can be viewed using the Best Color Available (slower updates), Best
Compression (fastest updates), a combination of Best Color and Best Compression or in Grayscale.
The color depths of individual ports and channels can be specified by selecting the View - Color
command in a remote session window. These settings are saved individually per port and channel.
Additional Video Adjustment
Generally, the Video Viewer window automatic adjustment features will optimize the video for the
best possible view. However, users may fine tune the video with the help of Avocent Technical
Support by using the Tools - Manual Video Adjust command in the Video Viewer window menu or
clicking the Manual Video Adjust button. This displays the Manual Video Adjust dialog box.
Video adjustment is a per target setting and applies to each target device you access.
Modified video settings are written to the DS1800 digital switch or DSR switch. Settings are also
stored per port/channel session on a system when they are made and saved so they may be used
during a non-shared session as follows:
• If sharing is not enabled, the video settings made on the local DS1800 digital switch or DSR
switch during the session are used.