Specifications
16
The Adder
test pattern
generator
showing its RGB
crosses. In this case,
the green signal can be
seen out of line with the other
two colours.
To use skew adjustment
1 Display the test pattern. See To obtain and run the free Adder test
pattern generator.
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.
2 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.
4 Press the
and
keys to retard or advance the timing of the selected
colour channel respectively. On screen you will see a change in the position
of the selected colour crosses in relation to the other two.
Num
Lock
Caps
Lock
Scroll
Lock
Num
Lock
Caps
Lock
Scroll
Lock
Num
Lock
Caps
Lock
Scroll
Lock
Advance
colour
timing
Retard
colour
timing
Restore
default
skew
settings
Exit image
controls
and save
settings
5 When the selected colour crosses are correctly positioned, press to
exit that colour channel. The keyboard indicators will return to flashing in
sequence.
6 If required, repeat steps 4 to 6 to select and adjust any colour channel until
the vertical lines of the red, green and blue crosses are all aligned.
7 When all colours are correctly aligned, press to exit configuration mode
and permanently save all settings.
Note: Once you have made a skew adjustment, it may be necessary to re-
adjust the image controls to attain an optimum screen image.
3 As appropriate, press either the R, G or B keyboard keys to select
the appropriate colour channel. Corresponding keyboard
indicators will flash rapidly to show which channel is
currently selected for adjustment: Num Lock for Red,
Caps Lock for Green and Scroll Lock for Blue.