Extron electronic SW6 AV MX Installation, cont’d, Signal output connections, Audio models

Installation, cont’d

Audio models

3Connections for balanced and unbalanced audio inputs —

Each input has a 3.5 mm, 5-pole captive screw connector for balanced or unbalanced stereo audio input. Connectors are included with each A/V switcher, but you must supply the audio cable. See figure 2-4 to wire a connector for the appropriate input type and impedance level. High impedance is generally over 800 ohms.

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. Exercise care to ensure the captive screw connector is plugged into the desired input or output.

Signal output connections

S-video models

4S-video output connectors — Connect S-video displays to these two 4-pin mini DIN connectors.

Composite video models

4Composite video output connectors — Connect composite video displays to these two female BNC connectors.

Audio models

5Connections for audio outputs — 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. See figure 2-6 to properly wire an output connector.

Tip	Tip
See warning	Ring
Sleeve	Sleeve (s)

Tip

Sleeve

Tip

Sleeve

Unbalanced Input

(high impedance)

Tip

Ring

Sleeve (s)

Tip

Ring

Balanced Input

(high impedance)

600 ohms

Tip

Ring

Sleeve (s)

Tip

Ring

600ohms

Balanced Input

(600 ohms)

Tip	Tip
See warning	Ring
Unbalanced Output	Balanced Output

Figure 2-6 — Captive screw connector wiring for audio output

Figure 2-4 — Captive screw connector wiring for inputs

When making connections from the switcher using existing audio cables, see figure 2-5. A mono audio connector consists of the tip and sleeve. A stereo audio connector consists of the tip, ring and sleeve. The ring, tip, and sleeve wires are also shown on the captive screw audio connector diagrams, figure 2-4 and figure 2-6.

Tip	Sleeve	Tip (left)	Sleeve (Gnd)
			Ring (right)
	Tip (signal)		Tip (left)
	Sleeve (Gnd)		Sleeve (Gnd)
	Unbalanced mono		Unbalanced stereo

Figure 2-5 — Phono audio connectors

The audio level for each input can be individually set, via the front panel or RS-232, to ensure that the level on the output does not vary from input to input. See chapter 3, Operation, and chapter 4, RS-232/Remote Control, for details.

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, commanded via the RS-232 link, allows the user to select from any one of the audio input sources. See chapter 4, RS-232/Remote Control for details on the RS-232 connection

RS-232 or contact closure connection

6Remote connector — Connect a host device, such as a computer or touch control panel, an

5	1	1	5	Extron IR 20 Universal
				SYS 4/8/10/AV remote
				control, or a remote contact
9	6	6	9	closure device to the A/V
Female		Male		switcher via this 9-pin D
				connector for remote control
				using the Simple Instruction

Set™ (SIS), the Extron graphical control program for Windows, the IR 20 remote control, or a contact closure device.

2-4 Audio/Video Switchers • Installation Audio/Video Switchers • Installation 2-5