Lindy PRO-300 user manual Skew Compensation Adjustment, To use skew adjustment

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English Manual

If the image controls cannot provide a crisp image

If, after adjusting the image controls, the screen image remains fuzzy or has

coloured shadows you may need to use the Skew adjustment feature.

Please see the next section for details.

5.8 The Skew Compensation Adjustment

The twisted pair cabling supported by the Extender C5 set (category 5, or higher) consists of four pairs of cables. Three of these pairs are used by the modules to convey red, green and blue video signals to the remote video monitor. Due to the slight difference in twist rate between these three pairs, the red, green and blue video signals may not arrive at the monitor together. This is visible as separate colour shadows on high contrast screen images. This effect is particularly apparent when using higher screen resolutions and some types of category 6 and STP cables and in such instances, if possible, we recommend you use CAT5e UTP cable.

However, the Extender C5 provides internal skew adjustment that can help to rectify the situation. The skew adjustment works by delaying or advancing the timing of any of the red, green or blue colour signals so that they are all delivered to the monitor at precisely the same time. For best results a test pattern is provided and this should be displayed when using skew adjustment.

To use skew adjustment

1Insert the supplied Installation CD-ROM into the CD player of the computer.

2Within Windows, use the My Computer option (usually available as a desktop icon or within the Start menu) to view the contents of the CD-ROM. Double-click the Skew entry to display the standard test pattern. If necessary maximise the application window so that the image fills the screen.

The screen will show a series of fine red, green and blue crosses which should all be in line, vertically and horizontally. Skew affects the horizontal placement of the colours and using this pattern it is much easier to discover which, if any, colours are being adversely affected by the twisted pair cable run.

3Simultaneously, press the hotkeys (by default, <CTRL> and

<SHIFT> along with <RETURN>) to enter configuration mode.

The three keyboard indicators (‘Num Lock’, ‘Caps Lock’ and ‘Scroll

Lock’) will now begin to flash in sequence.

LINDY KVM Extender C5 PRO-300 Installation and Use

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Contents KVM Extender C5 PRO-300 Warranty information Safety InformationAbout this manual TrademarksContents Special Configuration Introduction Supplied items Installation Local Switch Configuration switch settingsSoftware can be changed. See . Flash upgrade procedure Password overrideRemote Switches 2 Remote SwitchGeneral remark Mounting a module desk or rackDesk mount Rack mountKVM+A multi-cable connection ConnectionsOptional power connection Serial cable connectionTwisted pair connection Keyboard, video and mouse connections Twisted pair, power and serial connectionsAudio connections Operation Power and activity indicatorsGeneral Use Locking and unlocking the systemSpecial configuration To exit from the configuration mode Password settingTo set a password Which restore setting do I use? To override the Remote passwordHot plugging and mouse restoration Recognising an IntelliMouse style mouseMicrosoft and Logitech specific mouse settings To restore mouse operation when hot pluggingTo change mouse signalling protocols Recognising an IntelliMouse driverTo display a suitable high contrast image Video compensation, Image controls sharpness and brightnessTo use the image controls SharpnessTo use skew adjustment Skew Compensation AdjustmentReport Extender C5 firmware version F 1 Return Miscellaneous settingsFlash upgrade procedure Get the upgrade files from Lindy Technical SupportCreate a startup disk Reconfigure the Local connections and begin Reconfigure the Remote connections and beginCopy the downloaded files to the disk Return all connections to their usual states Troubleshooting No video image is received at the Remote moduleOn-screen mouse pointer does not respond to mouse movements Lindy C5 Series Power distribution module Part No Extender C5 AccessoriesSound from the microphone cannot be heard or is very quiet Lindy C5 Series Rack mount chassis Part NoEuropean EMC directive 89/336/EEC FCC Compliance Statement United StatesCanadian Department of Communications RFI statement
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