Raritan Computer DKX416 - Manual (Page 127)

Chapter 2: Installation
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These settings can be refreshed using the Color Calibration
command, described in the next section, by manually forcing IP-
Reach or Dominion to autodetect the video settings (on the Video
menu, choose Auto-sense Video Settings), or by changing the
settings in this page. After you change a value, click Apply to test the
setting.
2. Noise Filter: IP-Reach or Dominion can filter out electrical
interference of video output from graphics cards. This feature
optimizes picture quality and reduced used bandwidth.
Note: The default Noise Filter is 4; Raritan recommends that you
lower this value to 0 (zero).