User`s manual
VersaTools
®
MTP 15HD RS Series • Installation
Skew Delay Compensation
CAT 5/5e/6/7 TP cable can lead to registration errors between
the red, green, and blue video signals. Pair skew can be
measured with test equipment or identied by viewing a
crosshatch test pattern with a critical eye to determine if either
the red, green, or blue video image leads (appears to the left of)
the other two video images.
Unless the TP cable is changed, the skew adjustment
should only need to be made once, during installation.
SEQ receiver skew compensation
The SEQ receiver has built-in skew compensation capabilities.
Adjust the equalization as follows:
1
. Zero the skew delay for red, green, and blue as follows:
a. Use a Tweeker or other small screwdriver to press
and hold the Select button for 3 seconds. The Red,
Green, and Blue LEDs all go out.
b. Release the Select button.
2. 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.
A crosshatch test pattern or a black background with
vertical white lines is ideal for determining skew.
3
. Adjust the leftmost video signal as follows:
The SEQ receiver cannot shift the rightmost video
image to the left.
a
. Use a Tweeker or other small screwdriver to press
and release the Select button until the LED lights for
the left-shifted color — Red, Green, or Blue.
b. Slowly rotate the Delay control clockwise while
monitoring the display. Observe that the leftmost
color shifts rightward one step at a time. Continue to
rotate the control until that color is properly
converged.
A 2-nanosecond adjustment is very fine. Up to
10 nanoseconds of delay may be necessary before you
detect a change in the display.
c
. Use a Tweeker or other small screwdriver to press the
Select button one more time to save the most recent
adjustment or allow the 10-second timeout to elapse.
4
. If the remaining colors are left shifted, repeat steps 2 and 3.
23VersaTools
®
MTP 15HD RS Series • Skew Delay Compensation