User guide

254 DSView Installer/User Guide
Block Noise Threshold and Pixel Noise Threshold
The Block Noise Threshold and Pixel Noise Threshold values set the minimum color levels in
terms of changed video blocks and pixels per thousand that are allowed. See Adjusting the View on
page 249 for information on changing the color depth of a Video Viewer window. The thresholds
are described below:
• The Block Noise Threshold sets the minimum color change that will occur in a single video
block. Increasing the value will reduce the network bandwidth. Decreasing the value will make
the size of these artifacts smaller.
• The Pixel Noise Threshold sets the minimum color change in a single pixel. Decreasing the
value will reduce the number of low-contrast artifacts, but will increase network bandwidth.
Automatic Video Adjustment
NOTE: You may also select Tools - Automatic Video Adjust from the Video Viewer window menu or click the
Automatic Video Adjust toolbar icon to automatically adjust the video.
In most cases, you will not need to alter the Video Settings from the default. The system will
automatically adjust and use the optimal video parameters. The DSView software performs best
when the video parameters are set such that no (
Ø) video packets are transmitted for a static screen.
You may easily adjust your video parameters by clicking on the Auto Adjust Video button in the
Manual Video Adjust dialog box, which instructs the DSR switch to optimize the video to
ideal settings.
NOTE: A green screen with yellow lettering may appear during auto-adjustment.
Refresh Image
NOTE: You may also select View - Refresh from the Video Viewer window menu to refresh the image.
Clicking the Refresh Image button in the Manual Video Adjust dialog box will completely
regenerate the digitized video image.
Video Test Pattern
Clicking the Video Test Pattern button in the Manual Video Adjust dialog box will toggle a display
of a video test pattern. Click the Video Test Pattern button again to toggle back to a normal
video image.
Adjusting Mouse Options
The Video Viewer window mouse options affect cursor type, cursor mode, scaling, alignment and
resetting. Mouse settings are device-specific; that is, they may be set differently for each device.
NOTE: If the device does not support the ability to disconnect and reconnect the mouse (almost all newer PCs
do), then the mouse will become disabled and the device will have to be rebooted.