Lindy MC5-IP Remote user skew adjustment, To use skew adjustment, Using the supplied skew pattern

Convergence test pattern showing the RGB crosses. In this case, the green signal can be seen out of line with the other two colours.

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Remote user skew adjustment

The category 5, 5e and 6 cabling supported by the MC5 consists of four pairs of wires per cable. Three of these pairs are used 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 precisely the same time. This is visible as

separate colour shadows on high contrast screen images and is particularly apparent when using higher screen resolutions and some types of category 5e cables.

To alleviate this situation, the User Station	8	8	Data signal
C5 Pro module provides internal skew	7	7
adjustment that can help to rectify the	6	6	Red
situation. The skew adjustment works	3	3	video signal
by delaying or advancing the timing	5	5	Green
of any of the red, green or blue colour	4	4	video signal
	2	2	Blue
signals so that they are all delivered to
	1	1	video signal

the monitor at precisely the same time.

For best results, the “skew” program supplied on the disk is the most accurate way of setting skew as the red, green and blue lines are rendered exactly on the screen as single pixel wide lines. The skew.bmp test pattern can also be used but it is less accurate. Alternatively, you can create your own skew pattern using a standard image creation package, as detailed opposite.

To use skew adjustment

1Display a skew pattern on the appropriate computer. You can either use the supplied skew pattern or create your own:

Using the supplied skew pattern

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

iiWithin 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 cable link.

Creating a skew test pattern

iRun any image creation/editing application, such as the Paint program supplied with Windows.

iiUsing the image application create three stacked horizontal rectangles (one red, one green and one blue) that fill the width of the screen.

iiiDraw a vertical black line down across the coloured bars and then repeat this vertical line at intervals along the width of the coloured bars. These lines create breaks across the colours and give you more opportunities to view the horizontal position of each colour relative to the others.

2On the remote user keyboard (connected to a User Station C5 Pro),

simultaneously, press the hotkeys (by default, and ) along with to enter configuration mode.

The three keyboard indicators (‘Num Lock’, ‘Caps Lock’ and ‘Scroll Lock’) will now begin to flash in sequence.

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