Extron Electronics RGB 320 - Manual (Page 14)

Installing RGB 320 Switching Interface Components • Chapter 2
RGB 320 Switching Interface System • User’s Manual • Extron 2-3
Tip
Sleeve
Ring (-)
Tip (+)
Sleeve
Ring (-)
L R 2
Input
L R A L R B
Output
L R 2
Input
Left
Right
Gnd
Tip
Sleeve(s)
Tip
Unbalanced Output (high impedance)
See warning.
See warning.
Outputs
other half of connector
Left
Right
Gnd
Ring
Tip
Ring
Tip
Balanced Output (high impedance)
Sleeve(s)
other half of connector
Left
Right
Gnd
Ring
Tip
Ring
Tip
Balanced Output (600 ohms)
Sleeve(s)
other half of connector
Balanced Input (high impedance)
Left
Right
Gnd
Ring
Tip
Sleeve(s)
Ring
Tip
other half of connector
Left
Right
Gnd
Tip
Tip
Sleeve
Sleeve
Unbalanced Input (high impedance)
other half of connector
Left
Right
Gnd
Ring
Tip
Sleeve(s)
Ring
Tip
600 ohm
Balanced Input (600 ohms)
600 ohm
other half of connector
L R 2
Input
Audio Input Connections
The 10-pole receptacles are located on the rear panel below the BNC connectors.
Inputs are on the left side, and outputs are on the right. Each input receptacle has
five poles on its left labeled for left (L) and right (R) stereo, and the input number
is also labeled. Polarity (+/-) and ground are marked below. The right five poles
are labeled COM and PWR for use with an RGB 322/324/326/340 input buffer.
Cable connectors are supplied with the RGB 320, one for each input and output.
The wires are secured using the captive screws inside the
connectors. (See Figure 2-3.) Each connector is then
plugged into the appropriate input channel position on
the rear panel.
If you are not using RGB 322/324/326/
340 input buffers, the right five poles are not used.
Figure 2-3. Audio/Comm/Power Input Connectors with Captive Screws
When making connections for the RGB 320 from existing audio cables, see
Figures 2-5a and 2.5b. The round audio connectors are shown with the top one
(tip and sleeve only) for unbalanced audio and the bottom one (tip, ring and
sleeve) for balanced audio. The “ring”, “tip” and “sleeve” markings are also used
on the captive screw audio connector diagrams in Figure 2-5a and 2-5b. These
examples can be used together as a guide for making audio cables.
Figure 2-4. Examples of Round Audio Cable Connectors
Three methods of wiring the connectors for audio input are listed and shown here.
Only the first method is used with RGB 324/326/340 input buffers.
Balanced High Impedance (High Z) Stereo Tip, Ring (Left & Right stereo)
See Figure 2-8 for wiring RGB 324/326/340 buffers.
Figure 2-5a. Wiring the Input Audio Connectors Using RGB 324/326/340 Buffer
If you are not using RGB 324/326/340 for audio
inputs, any of the three methods can be used.
Balanced 600 ohm input Impedance Stereo Tip,
Ring (Left & Right)
Unbalanced High Impedance (High Z) Stereo Tip,
Ring, Ground (Left & Right)
Figure 2-5b. Wiring the Input Audio Connectors Not Using RGB 324/326/340 Buffer
Audio Output Connections
There are two audio outputs in one 10-pole connector. The left half is output A,
and the right half is output B. They can be wired in one of three ways.
Figure 2-6a. Three Methods of Wiring Audio Output
_________ If using the Unbalanced Output example in Figure 2-6a
(left-most example), connect the sleeve(s) to Ground
(Gnd). Connecting the sleeve(s) to a negative (-)
terminal will damage audio output circuits.
Figure 2-6b. Both Halves of the Output Connector Are Configured the Same