Extron Electronics RGB 201 - Manual (Page 30)

RGB 201 Rxi Universal Interface • Installation and Operation
Installation and Operation, cont’d
N The centering controls have no mechanical limits to
rotation. When the minimum or maximum limit of
the control is reached, LCD indicates the horizontal or
vertical shift limit has been reached and the picture stops
moving on the screen.
Centering memory
Turning the centering knobs not only moves the images, but it
also stores the horizontal and vertical centering setting in the
interface’s memory. The interface recalls the centering settings
each time it detects a change in the input frequency. Centering
adjustments only need to be set once for an application because
the settings are saved even when the power is off.
LCD display
e
LCD display — The LCD displays the horizontal and vertical
scanning rates of the input signal and indicates the horizontal
and vertical centering status and limits.
LCD screen backlight
The LCD backlights for 15 seconds at power-up, and it remains
backlit as long as an input signal is present. To force the
backlight to remain off at all times except at power-up, set DIP
switch 6 (No Backlight) on the rear panel to On (up).
Scan rate indication
When the interface is powered on, the LCD lights for 15 seconds
while it determines whether an input sync signal is present. If
DIP switch 6 is set to On (up), the LCD lights for three seconds
only.
• If the interface does not detect an input sync signal,
the LCD goes dark and displays NO SIGNAL until the
interface receives an active sync signal.
• If the interface detects an input sync signal, the LCD
displays the horizontal and vertical scan rates (sync
frequencies) in the following format:
Hxxx.xxk
Vxxx.xHz
The first line shows the horizontal rate in kilohertz, and
the second line shows the vertical rate in Hertz.
Centering indications
While the vertical (
{
) or horizontal (
[
) centering (shift)
controls are being adjusted, the LCD displays H-SHIFT or
V-SHIFT. That message remains on the LCD (in place of the
scan rates) until the centering control has been inactive for
3 seconds.
2-18