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VTG • Installation and Operation
RGB 202 R
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VTG • Installation and Operation
Installation and Operation, cont’d
2-16 2-17
6. If the image appears and is stable, but it has ghosting or
blooming, check the high Z/75 ohm video input
termination. If changing the termination doesn’t solve the
problem, try using a different input cable.
7. If the picture is faint or cuts out and the signal is weak, the
video input may be double-terminated. If a local monitor
or a termination adapter is attached to the input’s monitor
breakout cable, or if a laptop breakout cable is used, make
sure that the 75 ohm video input termination DIP switches
are set to Off (for high Z termination).
8. If the picture from a new source computer does not seem
correctly centered, the input position memory presets
might require resetting. To reset the input position
memories, do the following:
a. Unplug the interface’s AC power cord.
b. Hold the input selection switch up (toward input 1)
while reconnecting the power cord to the interface
and the power source
c. Select the appropriate input, and adjust the
horizontal and vertical centering.
9. If the image still does not display correctly, call Extron’s
customer support hotline.
If the interface does not respond to controls
1. If the picture does not move on screen when the horizontal
and vertical centering controls are rotated, DDSP is in use.
Set the DDSP DIP switch to Off.
2. If the RGB 202 Rxi VTG does not switch between inputs
when a remote control is used, the front panel 202/VTG
toggle switch might be set to VTG. Use the switch to select
202 in order to use a remote control.
When the 202/VTG switch is set to VTG, signals from
input1 and input 2 are ignored; the interface’s internal
video test generator provides a test pattern in place of the
computer video input. Input selection (selection of
input 1 or input 2) cannot be performed until the
202/VTG selection switch is set to 202.
Troubleshooting
Turn on the input devices (computer, audio device) and output
device(s) (projector, monitors, speakers). The image should now
appear on the screen, and sound should be audible.
If the image does not appear or there is no sound
1. Ensure that all devices are plugged in.
2. Make sure that each device is receiving power. The
interface’s front panel LED lights if the interface is
receiving power and an active sync signal.
3. Check the cabling and the audio connector wiring and
grounding, and make adjustments as needed.
4. Verify that the 75 ohm video input termination DIP
switches have been set correctly.
5. For digital display devices (including LCD, DLP and
plasma devices), try turning DDSP on or off using the rear
panel DIP switch.
6. To test the system setup and output, substitute a video test
generator for one of the computer inputs. Use the VTG
that is built into the RGB 202 Rxi VTG, or use a stand-alone
VTG with the RGB 202 Rxi. To use a stand-alone VTG,
unplug the input/output devices’ and interface’s power
cords, replace the video source with a VTG, then reconnect
power cords to restore AC power.
7. Call Extron’s customer support hotline if needed.
If the image is not displayed correctly
1. If the output image looks too green, the sync on green
(SOG) DIP switch may be set to On, and the display device
may not be configured to handle SOG signals.
Set SOG to Off.
2. If the picture bends or flags at the top of the screen, set the
serration pulse DIP switch to Off.
3. For a display device that experiences intermittent glitches,
try turning DDSP on or off using the rear panel DIP
switch.
4. If the picture “hangs off” the edges of the screen, adjust the
centering controls (
, ).
5. If the edges of the image seem to exceed their boundaries
or if thin lines and sharp edges look thick and fuzzy, try
changing the Level/Boost or Peak Control settings. If the
image is too bright, decrease the boost or peaking level.
