Extron Electronics RGB 202xi User Guide Rev. E - Manual (Page 15)

Extron • RGB 202xi Series • User’s Manual
Rear Panel Connections
Page 2-2
Audio Connections
The RGB 202 xi provides
audio switching (together
with the video input) to
the audio output which is
connected to the user’s
audio equipment. The
user also supplies the
audio cables.
The Audio Interface is a
PC/computer audio (600 ý) to line-level audio (balanced)
converter. If the computer has a sound card, the input
switch on the RGB 202
xi will select the audio with the
video (audio follow).
Although the input and output audio connectors are
physically the same, they are used differently. See the
illustration and the following descriptions for the correct
wiring of audio inputs and outputs.
Audio Inputs – Connect the stereo audio sources for Input #1
and Input #2 (above). Each input connector includes
contacts for left and right stereo and a common/ground
connector. Input cables should be wired as follows:
• Stereo left to Tip (+) contact
• Stereo right to Ring (-) contact
• Both commons to Sleeve (Gnd) contact
Audio Output (Left & Right) – There is one audio output,
using separate connectors for left and right channels.
Connect the left and right output jacks to the inputs of an
external audio system. The 3-contact outputs can be
wired for balanced or unbalanced audio.
• For unbalanced audio, use Tip (+) and Sleeve (Gnd).
• For balanced audio, use Tip (+) and Ring (-).
_ Observe polarity when making connections to keep left
and right channels in phase.
Extron • RGB 202xi Series • User’s Manual
Related Parts and Accessories
Computer-to-Interface Connections
As illustrated below, there are many ways to connect a
computer to an interface, depending on the application.
This section discusses some of the possibilities.
MBC (Monitor Breakout Cables)
Extron’s MBC monitor Breakout cables feature a monitor
loop-through connector to provide viewing both on the
local monitor and large screen display. MBC cables are
available for most computer manufacturers’ display
adapter cards and are attached directly the computer’s
display monitor output.
ICWK (Internal Computer Wiring Kit)
Extron ICWKs provide interfacing signals for computers
and terminals with no external video display output.
Internal video monitor signals are routed externally to the
computer, usually to a 9-pin connector. From the 9 pin
connector, a short cable is included with the kit for signal
transfer to the Extron interface 9-pin connector input.
MBC Buffers
Extron MBC Buffers isolate the computer’s video signal
and monitor from the Extron RGB 202
xi interface, while
maintaining Video Bandwidth to the local monitor and the
interface. An example of an MBC buffer is shown on the
next page. Power is supplied to the buffers by the “MBC
Power” jacks located on the Rear Panel of the RGB 202
xi
interface. The page A-3 shows a partial listings of the
most popular buffers; call Extron for a complete list.
HI-Res ECL Buffer (26-177-01) – Buffers all ECL type
signals and is used in conjunction with an MBC cable for
the computer being interfaced.
Page A-1
COMPUTER
LOCAL MONITOR
COMPUTER OR PC
RGB 202xi TWO-INPUT
UNIVERSAL INTERFACE