Dakota Computer Solutions
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1579 Lexington Road
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Green Oaks, IL 60048
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Tel: 847-816-1337
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Fax: 847-816-4558
9
Video
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The picture is not sharp & is very smeary
a) Video compensation incorrectly set - See installation section.
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Each character has separated into overlapping red, green & blue pixels. (Like looking
through 3D glasses).
a) Check that the UTP / STP wiring used throughout is EIA 568 standard.
b) Check patch panels for poor or incorrect connections
c) Check the compensation jumper settings for proper distance.
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The monitor sometimes loses sync causing it to go blank for a second or two
a) This occurs if your electrical power system is very noisy (particularly ground).
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Video only required, but no picture appears
a) The Local Unit must be connected to the PC’s keyboard port.
b) Consult technical support if you cannot do this and require a secondary power supply for the
Local Unit.
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A constant vertical wobble appears down the screen (interference).
a) The interconnection cable could be located too close to a source of very strong electrical
interference, re-route cabling if possible
b) If interference is from strong signals from a nearby broadcast transmitter a beat pattern will
appear. Change the vertical refresh rate of video card slightly, such as from 65Hz to 70Hz.
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Video Picture is black and white not color
a) Your system requires a monitor ID code to boot into the correct video mode. Please contact
technical support on details to correct this.
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Windows or Windows NT will only boot into a low-resolution graphics mode.
a) The problem could be Monitor ID. See above.
b) If your graphics card supports VESA DDC (Display Data Channel) configure the graphics
driver by explicitly telling it which make and model of monitor you have rather than using
DDC.
c) Disable the option "Automatically detect plug and play monitors". This command is found in
Control Panel/Display Properties/Settings (tab)/Advanced (button)/Monitor(tab).
