User guide

Chapter 6: Using the Video Viewer Window 251
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 DSView user. The command is not
available to non-primary DSView users who are sharing the session.
The DSR switch DVC algorithm enables DSView 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 DSR switches supported by the DSView software.
Video Viewer windows can be viewed using the best color available (slower updates), the best
compression (fastest updates), a combination of best color and best compression or in greyscale.
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, DSView 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 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 DSR switch during the session
are used.
• If sharing is enabled for the non-primary DSView user, video settings are read from the
DSR switch.
See Connecting to an existing KVM session on page 243 for more information on session sharing.