- Extron Electronics Mountable Interfaces User's Manual

RGB 400 Series Installation and Operation
RGB 400 Series Installation and Operation
Installation and Operation, cont’d
Mounting the interface to the wall box
Once the system has been cabled and tested, the interface
can be installed in the wall or furniture.
1. Remove power from the interface and input and
output devices by disconnecting the power cords from
the power supply.
2. Detach the input cables from the front panel.
3. For the RGB 408 only, install the EMI strips.
To maintain proper grounding connections between
the interface faceplate and the wall box, adequate
contact between the faceplate and wall box must be
ensured. Installing the supplied EMI (electromagnetic
interference) strips will ensure the proper contact and
maintain the ground. To install the strips, do the
following:
a. Peel off the protective, papery coating from the
back of an EMI strip.
b. Apply the EMI strip to the center of the upper lip
of the 4-gang wall box, pressing firmly to ensure
contact. See the illustration below.
c. Repeat steps 1 and 2 to install the other EMI con-
ductive strip onto the lower lip of the wall box.
EMI Strips
4-gang Wall Box
EMI Strip
Remove Adhesive
Backing
RGB 408
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Installing EMI strips on the wall box
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the situation, either the pass-through connector or any
cable that was part of the installation but not used for
this test may be the source of the problem. If this test
does not produce an image or sound, the problem
may lie with an input device or an output device.
3. Check the cabling and the audio connector wiring,
and make adjustments as needed.
4. Verify that the High Z/75 Ohm video input
termination toggle switch on the front panel has been
set correctly.
5. For digital display devices (including LCD, DLP and
plasma devices), try turning DDSP on or off using the
rear panel SW1-2 DIP switch.
6. Call Extron’s customer support hotline if needed.
If the image does not display correctly
1. If the output image looks too green, the computer may
be sending video with sync on green (SOG), and the
display device may not be configured to handle SOG
signals. The RGB 400 Series interfaces do not strip
sync from the video input signals.
2. If the picture bends or flags at the top of the screen, set
the serration pulse DIP switch (SW1-1) to Off.
3. For a display device that experiences intermittent
glitches, try turning DDSP on or off using the rear
panel SW1-2 DIP switch.
4. If the picture “hangs off” the edges of the screen,
adjust the H. Shift horizontal centering control.
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 gain/peaking jumper (J10,
J9, J8) settings. If the image is too bright, decrease the
gain/peaking level.
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 image still does not display correctly, call
Extron’s customer support hotline.
If no image or sound results from pass-through
connections
1. Make sure each input device is connected to the
correct pass-through connector, which in turn is
connected to the appropriate output device.
2. Ensure that each connector is properly wired and
grounded, and that each device is powered on.
3. If there still is no image or sound, try cabling the input
device directly to the output device. If that resolves
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