Operating instructions

6-15
MTPX Plus Twisted Pair Matrix Switchers • HTML Operation
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:
N
For 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.
N
A 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:
N
The 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(gure6-12).
N
 Theredvideoplaneisselectedingure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.
N
 A2-nanosecondadjustmentisveryne.Upto10nanosecondsofdelaymaybe
necessary before you detect a change in the display.
N
As 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.