Extron electronic MTPX Plus Series manual Changing the skew, 12 - Skew selection drop box

Changing the skew

Users can individually set the red, green, and blue skew setting for each input and/or output from the Picture Settings page. The skew settings correct skew delay (misconvergence) problems commonly encountered when using Category (CAT) 5, 5e, or 6 twisted pair (TP) cables for RGB or component video

transmission.

Change an input’s or output’s skew setting as follows:

NFor best results, set all three skew values to 0 ns (see steps 2a and 2b below) before adjusting for misconvergence.

1.	Use UTP cable test equipment or examine the displayed video image with
	a critical eye to determine which video signal, red, green, or blue, is most
	shifted to the left.

NA crosshatch test pattern is ideal for evaluating pair skew.

2.	Monitor the displayed image. Increase the left-shifted video signal’s skew
	setting 2 ns at a time as follows:

NThe skew compensation function cannot shift a video plane farther left than the 0 ns setting.

a. Click drop box for the desired input or output and the desired video plane. A drop-down scroll box appears (figure 6-12).

NThe red video plane is selected in figure 6-12.

Figure 6-12 — Skew selection drop box

b. Click and drag the slider or click on the scroll up button or the scroll down button until the desired value is visible.

NA 2-nanosecond adjustment is very fine. Up to 10 nanoseconds of delay may be necessary before you detect a change in the display.

NAs an alternative to step 2, or to watch a display as you make adjustments, click on the up button or down button.

3. If either of the other video signals is misconverged, repeat steps 2a and 2b.

MTPX Plus Twisted Pair Matrix Switchers • HTML Operation 6-15