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Chapter 2 • Installing the RGB 320 Switching Interface Components
Extron • User’s Manual • RGB 320 Switching Interface System
Inputs
Output(s)
Choosing Cables for Remote Inputs
With the RGB 320 as the center of a computer video interface system, the input
connectors have specific functions, and the connectors must not be misused. The
ideal installation will use the RGB 322, RGB 324, RGB 326 or RGB 340 as inputs
through an installation (or composite) cable. Most of the examples used in this
manual will make this assumption. The User’s Manual for the RGB 322,
RGB 324, RGB 326, and RGB 340 gives detailed instructions for installing those
devices. (P/N 68-338-01)
_________ Regardless of which cables are used, their connectors must be wired the same
way on both ends. Any crossing of lines could damage the electronic circuits in
the buffer unit or in the RGB 320.
Figure 2-7. Installation Cables Connected to Inputs 1, 3 and 5
RGB 322/324/326/340 Input Buffer Connections
Figure 2-8 shows the
wiring for the audio,
communications
and power
connector for the
buffer. Note that the
wire and contact
assignments must
match those on the
RGB 320 end of the
cable shown in
Figures 2-9a and
2-9b.
Figure 2-8. One Installation Cable Can Be Used for Each Input and Each Output
Composite Cables
Composite cables, such as Extron’s Installation Cable, make installation easier,
because one jacketed cable can be dedicated to one input or to one output.
_______ Installation Cable includes a combination of several types of cables that are
enclosed in one jacket. The combination can carry video, audio, power,
communications, etc. If you will be making cables, follow the guidelines in
Appendix A of the RGB 322, 324,326 and 340 User’s Guide.
2-4
No audio on
RGB 322
Single, 20-gauge wires:
Brown to C
Violet to D
Gray to E
Shielded twisted pair
Black to A
Orange to B
(with braided shield trimmed)
Shielded twisted pair
(braided shield separated)
White to L +
Black to L -
Shield to ground
Heat shrink over shield
Shield to ground
Shielded twisted pair
(braided shield separated)
Red to R +
Black to R -
Heat shrink over shield