Extron electronic SW RGBHV Series

Installation, cont’d

SW RGBHV Series Switchers • Installation2-8

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

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.

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

See caution

Sleeve

Tip

See caution

Balanced Output

Tip

Ring

Sleeve (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.