Extron Electronics SW RGBHV Series User Guide - Manual (Page 19)

Installation, cont’d
SW RGBHV Series Switchers • Installation 2-8
2 Balanced or unbalanced audio input connections (SW2 RGBHV A,
SW4 RGBHV A, and SW6 RGBHV A only)
— Each input has a 3.5 mm,
5-pole captive screw connector for balanced or unbalanced stereo audio input.
Connectors are included with each SW RGBHV Series switcher, but you must
supply the audio cable. See figure 2-8 to wire a connector for the appropriate
input type and impedance level. High impedance is generally over 10k ohms.
Unbalanced Input
Tip
Sleeve
Tip
Sleeve
Balanced Input
Tip
Ring
Sleeve (s)
Tip
Ring
(high impedance) (high impedance)
Figure 2-8 — Captive screw connector wiring for audio inputs
Figure 2-8 shows three methods of wiring the captive screw audio connectors
for input, and figure 2-9 shows two methods of wiring the connectors for
output. A mono audio connector consists of the tip and sleeve. A stereo audio
connector consists of the tip, ring and sleeve. If you are wiring a captive screw
connector from an existing unbalanced audio cable, the white insulated wire is
typically the left channel (tip) and the red insulated wire is typically the right
channel (sleeve). There is no reliable standard for existing balanced audio
cables.
CAUTION The captive screw connector can easily be inadvertently plugged partially
into one receptacle and partially into an adjacent receptacle. This
misconnection could damage the audio output circuits. Ensure that the
captive screw connector is plugged into the desired input.
The audio level for each input can be individually set, via the front panel or
under RS-232 control, to ensure that the level on the output does not vary
from input to input. See chapter 3, “Operation”, and chapter 4, “Remote
Control”, for details.
Output
3 RGB and component video outputs — Connect an RGBHV, RGBS, RGsB,
RsGsBs, or component video display or other device to these BNC
connectors. Connect the cables as shown in figure 2-7.
4 Balanced or unbalanced audio output connectors (SW2 RGBHV A,
SW4 RGBHV A, and SW6 RGBHV A only)
— These 3.5 mm, 5-pole captive
screw connectors output the selected unamplified, line level audio. Connect
audio devices, such as an audio amplifier or powered speakers, to these
connectors. See figure 2-9 to properly wire an output connector.
Unbalanced Output
Tip
S ee c a ution
S leeve
Tip
S ee c a ution
Balanced Output
Tip
Ring
S leeve ( s )
Tip
Ring
Figure 2-9 — Captive screw connector wiring for audio output
CAUTION Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative
(-) terminal will damage the audio output circuits.
By default, the audio output follows the video switch. Audio breakaway,
which can be commanded under RS-232 control via the SIS or Windows-based
control program, allows you to select from any one of the audio input sources.
See chapter 4, “Remote Control”, for details.