RGB 400 Series Installation and Operation
RGB 400 Series Installation and Operation
Installation and Operation, cont’d
Attaching adapter plates (RGB 408)
The RGB 408 can have up to 4 optional adapter plates. The
adapter plates allow for a variety of types of pass-through
audio and/or video connectors to be added to the
interface’s front panel faceplate.
Blank plates (two single-height and one double-height
plate) are included with the RGB 408 to cover unused
spaces. Other adapter plates must be ordered separately.
They also must be attached to the faceplate and cabled
before the interface is installed in the wall or furniture. The
screws needed for installing the adapter plates are built into
the plates, so no additional screws will be needed.
1
.
Remove the blank plates from the interface by
unscrewing the nuts that fasten the plates to the
faceplate.
2
.
Insert the adapter plate screws through the holes in
the faceplate. Attach the adapter plates to the
faceplate with the provided captive washers and
#4-40 nuts. See the illustration “Installing optional
adapter plates” on the next page.
3
.
Attach the output cables to the connectors on the back
side of the adapter plates. Several adapter plates
require conductors to be soldered to the connectors.
Attach foil and braided shields to ground connections.
Each red (J8), green (J9) and blue (J10) jumper can be set to
one of three positions to provide unity gain (0.7 volts p-p),
0.8 volts p-p, or 0.9 volts p-p output. Select the setting that
yields the best image display. Use the diagram on the
product label (shown below) as a guide to setting the
output gain/peaking for each color.
J10
J9
J8
.8V
.9V
.7V
.7V
.8V
.9V
.7V
.8V
.9V
RGB 400 Series gain/peaking jumpers
0.7V — Use this for short cable runs (under 125 feet).
0.8V — Use this for long cable runs for all frequencies.
0.9V — Use this setting for long cable runs and high
frequency video signals.
2-15
Setting DIP switches and jumpers
DIP switches and jumpers must be set and tested before the
interface is secured into the wall box, wall or furniture.
DIP switches
DIP switch module SW1 contains two DIP switches (SW1-1
and SW1-2). The module is located on the circuit board on
the back of the interface, as shown on pages 2-6,
2-7, 2-9, 2-11 and 2-13. In these illustrations, the
On position is to the left.
Different video projectors may have slightly different sync
requirements. Use the DIP switches on the interface to
make the interface’s output compatible with the projector.
DIP switch 1 (SW1-1)
controls serration pulse output.
ON = No serration pulses will be output in the
composite sync signal.
OFF = Serration pulses will be output.
DIP switch 2 (SW1-2)
controls sync processing.
ON = Digital Display Sync Processing (DDSP) will be
used. This may be required in order to obtain a
stable picture on some digital display devices.
When DDSP is on, horizontal shift (centering) is
disabled.
OFF = DDSP will not be used.
Jumpers
Video signals passing through long cable runs (over 125
feet) or through poor quality cables can decrease in
strength, creating signal loss. The longer the cable, the
higher the video level and the greater the peaking that will
be needed to compensate for the loss.
The gain/peaking adjustment jumpers are located on the
circuit board on the back of the interface, as shown in the
rear features sections of this manual. To configure the
jumpers, use pliers to pull the jumper shunt off the pins,
then place the jumper on the appropriate pins.
Make sure the interface is disconnected from
the power source before configuring jumpers.
Changing jumper settings
SW1
ON
12
2-14