Black Box ACS235A - Manual (Page 91)

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SERVSWITCH™ BRAND FIBER KVM EXTENDERS
6.2 Making Video Adjustments with the Remote Module’s User Controls
If the image from your computer that’s displayed on the remote monitor is badly
distorted, this might be the result of a video-signaling problem. Refer to Chapter 3
(especially Section 3.2.1) or Chapter 4 for ways in which you can modify the way
the ServSwitch Brand Fiber KVM Extenders handle the sync and color signals.
If the image is not distorted but the colors are off, we first suggest that you try
tweaking the contrast and brightness dials on the rear panel of the ServSwitch
Brand Fiber KVM Extender’s Remote Module. Once you get the image as close as
you can to how it should look, try adjusting the image with the monitor’s controls.
If this doesn’t work, you might try disabling the Extenders’ automatic gain
control (see Sections 3.2.2 and 3.3.2 for the ACS235A PC model or Sections 4.1.2
and 4.2.1 for the ACS236A Sun model), then using a tiny screwdriver to turn any of
the three gain-control screwdials with which you can manually control the gain of
the red, green, and blue color signals. These are also on the rear panel of the
Remote Module: Each screwdial is just above and to the left of the fiberoptic
connector carrying the color signal it controls, so the red screwdial is next to the
red connector, green next to green, and blue next to blue. Be careful if you do
this; when you make manual adjustments like these, it’s very easy to throw the color
of your monitor display entirely out of whack.