Audio Connections - Extron electronics SW6 User Manual

Installation and Operartion, cont'd
L 1 R L 2 R L 3 R L
4
Figure 2-4 — SW6 VGA A rear panel (right half)
d
Audio Input connectors — Connect balanced
or unbalanced stereo or mono audio inputs to
these 3.5 mm, 5-pole captive screw connectors.
Connectors are included with each switcher, but
you must supply the audio cable. See "Audio connections" on
the next page to wire the connectors.
e
Audio Output connector — Connect a balanced
or unbalanced stereo or mono audio device to
this 3.5 mm, 5-pole captive screw connector.
Connectors are included with each switcher, but
you must supply the audio cable. See "Audio connections" on
the next page to wire the connectors.
f
Remote connector —
computer, touch panel control, or RS-232 capable PDA to the
switcher via this 9-pin D connector for serial RS-232 control
(figure 2-5).
REMOTE
Figure 2-5 — Remote connector
See chapter 3, "Remote Control", for definitions of the SIS
commands (serial commands to control the switcher via this
connector) and for details on how to install and use the
control software.
To select an input using contact closure control, momentarily
tie an input's selection pin to ground.
N Contact closure input selection cannot be performed when
the auto switch mode is on.
SW6 VGA Audio • Installation and Operation
2-6
4 R L 5 R L 6 R L 1 R
5 6
Connect a host device, such as a
Contact
RS-232 Closure Function
PIN
— In #1 Input #1
1
2 TX — Transmit data
RX — Receive data
3
— In #2 Input #2
4
Gnd Gnd Ground
5
— In #3 Input #3
6
7 — In #4 Input #4
— In #5 Input #5
8
— In #6 Input #6
9

Audio connections

See figure 2-6 to wire a connector for the appropriate input or
output type and impedance level. High impedance is generally
over 800 ohms.
Tip
Sleeve
Tip
Sleeve
Unbalanced Stereo Input
(high impedance)
Tip
Do not tin the wires!
NO GROUND HERE.
Sleeve(s)
Tip
NO GROUND HERE.
Unbalanced Stereo Output
Figure 2-6 — Captive screw connector wiring for
audio
The length of the exposed (stripped) portion of the
C
copper wires is important. The ideal length is 3/16"
(5 mm). Longer bare wires can short together.
Shorter bare wires are not as secure in the captive
screw connectors and could be pulled out.
The input audio connectors can easily be
C
inadvertently plugged partially into one receptacle
and partially into an adjacent receptacle. Ensure
that the connector is plugged fully and only into the
desired input or output.
Tip (+)
Sleeve ( )
RCA Connector
Figure 2-7 — Typical audio connectors
SW6 VGA Audio • Installation and Operation
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Stereo Input
(high impedance)
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Stereo Output
Tip (+)
Ring (-)
Sleeve ( )
3.5 mm Stereo Plug Connector
(balanced)
2-7