Extron electronics RGB 203 Rxi User Manual page 15

im Vertrieb von
Installation and Operation, cont'd
LCD display
LCD display — The LCD serves two main functions: to display
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the horizontal and vertical scanning rates of the input signal,
and to indicate the horizontal and vertical centering status and
limits. During VTG operation (RGB 203 Rxi VTG only), the
LCD displays the VTG format, resolution, and refresh rates.
LCD screen backlight
The LCD backlights for 15 seconds at power-up, and it remains
backlit as long as an input signal is present at the selected input.
To force the backlight to remain off at all times except at power-
up, set DIP switch 8 (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 8 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.
When a centering control reaches its minimum or maximum
limit, the LCD displays MIN or MAX on the line below
H-SHIFT or V-SHIFT.
Once the centering controls are no longer active, the centering
settings are saved, and the LCD displays the current scan rates.
If DIP switch 1 (DDSP) on the rear panel is set to On (up) and a
centering control is rotated, the LCD displays N/A DDSP ON,
and the image does not shift on screen.
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2-16 RGB 203 Rxi, RGB 203 Rxi VTG • Installation and Operation
CAMBOARD Electronics
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RGB 203 Rxi, RGB 203 Rxi VTG • Installation and Operation
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VTG indications
When the VTG function is active (RGB 203 Rxi VTG only), the
LCD displays the current format, resolution, and scan rate
settings.
Input selection
Input selection switch — The Input selection toggle switch
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selects among inputs 1, 2, and 3 (figure 2-11). Each time you
move the switch down, the interface switches to the next lower
input (in the order that the inputs are listed on the front panel):
input 1 —> input 2, input 2 —> input 3, input 3 —> input 1.
Moving the switch up selects the next higher input (in the order
that the inputs are listed on the front panel). The switch returns
to the center position automatically.
Down-switching
Up-switching
INPUT
1
Start 2
3
1
2
3
1
2
3
1
2
Start
3
Figure 2-11 — Switching among inputs
A remote RS-232 control system or computer or a contact
closure switch, connected via the rear panel Remote port, can
also switch among the inputs.
Executive mode (see Executive mode in this chapter)
disables the Input selection switch. If executive mode is
on and the Input selection switch is operated, the LCD
displays EXEC MODE ON.
The interface handles audio on inputs 1 and 2 only.
When you select input 3, the audio output is muted.
Input LED — The lit LED indicates the selected input.
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INPUT
1
2
3
1
2
3
1
2
3
1
2
3
2-17