Extron • RGB 202
xi
Series
• User’s ManualPage 3-3
Picture Centering Controls
These two knobs are used to make four
separate adjustments. The RGB 202xi has
memories for each of its two inputs. Turning a
knob not only moves the image but it also
stores that information in the memory for the
selected input. When switching between
inputs, or when power is OFF, each memory keeps the
centering information that was last set. This means that
centering for each of the two inputs need only be set
once for an application.
These two controls have no mechanical limits. Each
centering knob can be turned forever – in either direction.
Any time a Centering Control is turned, with the interface
power on, centering information is being stored. The
limits on how far the picture will move on the screen is
determined by software, and not by any mechanical limits
of the knob. There is no “reset”, you simply readjust.
Many projectors store picture centering information in
their memories based on frequency. When switching
between input sources that have the same frequency, the
image may not be perfectly centered. However, on the
RGB 202xi, centering adjustments are stored for each
input, regardless of frequency, thus assuring accurate
centering when switching between the two inputs.
Vertical ( ) – The Vertical Centering adjustment (also called
“Vertical Shift”) is used to move the image up and down
on the screen. Most data monitors and projectors don’t
have this adjustment and those that do may give
inconsistent results when switching between inputs. This
is a useful feature in an interface because Having a
Centering Control on the interface provides an easy way
to eliminate this problem.
_ To use the centering controls on the display device,
instead of those on the interface, set DIP switch #1 on the
rear of the RGB 202
xi
to the ON position.
Horizontal ( ) – The Horizontal Centering adjustment (also
called “Horizontal Shift”) is used to move the image from
side to side on the screen. As with Vertical Picture
Centering, this control can also be defeated (turned off)
by setting DIP switch #1 on the rear of the RGB 202xi to
the ON position.
Operation • Controls and Indicators
Extron • RGB 202
xi
Series • User’s Manual
4
Chapter FourRGB 202 Model DifferencesRGB 202 VTG
(Video Test Generator)
RGB 202 VS2
(VideoShift™)
RGB 202 VS SL2
(VideoShift™ and ShiftLock™)
RGB 202
xi
, RGB 202 VTG,
RGB 202 VS2 and RGB 202 VS SL2
User’s Manual