Cabling - Extron electronics SW2 VGA DA2 A User Manual

Installation and Operation, cont'd
Connect the sleeve to ground (GND). Connecting
the sleeve to a negative (-) terminal will damage the
audio output circuits.
See Warning
Sleeve (s)
See Warning
Sleeve (s)
Wiring the audio output connector
Autoswitching/Contact closure connector — Connect a contact
9
closure control device to the left three pins of this 3.5 mm,
5-pole captive screw connector.
• Pin 1 selects input 1 when connected to ground (pin 3).
• Pin 2 selects input 2 when connected to ground (pin 3).
• Pin 3 connects to the ground wire (equipment ground).
CONTACT AUTO-SW
1 2
Jumper pins 4 & 5 for
autoswitching.
Contact Closure Control
• Pins 4 and 5 if jumpered/shorted together will turn the
autoswitching mode on. When the autoswitching mode is
on, the switcher automatically switches to the input that
has an active sync signal.
If both inputs have an active sync signal present, the
highest input, input 2, will be used, and the input 2
indicator LED will light. If no active sync signal is present,
neither input indicator LED will light.
Autoswitching overrides manual input selection. If
autoswitching is on, contact closure and front panel
input selection will be disabled.
• If pins 4 and 5 are not connected, manual switching is
enabled. Selections can be made via the front panel
selection switches and the contact closure device.
If no active sync signal is present, the input 2 indicator LED
will still light.
2-8 SW2 VGA DA2 A /AF • Installation and Operation
Unbalanced Output
Tip
Tip
Balanced Output
Tip
Ring
Tip
Ring

Cabling

Attach cables to the switcher as detailed in the steps below. The
diagram in this section shows how the system looks when
cabling is finished.
1. Attach the computers' video output cables to the switcher
via the 15-pin HD female input connectors. If the
computers will provide the audio input, VGA with audio
combination cables, such as the Extron VGA HRA series
(#29-491-01 to #29-491-05), can be used.
2. Connect the cables from the stereo audio sources
(computers or other devices such as CD players or tape
decks) to the audio input jacks. The audio plug should be
wired as shown below.
Tip (L) Sleeve (Gnd)
Ring (R)
3. Connect VGA cables from the switcher's 15-pin HD female
output connectors to the display devices (projectors,
monitors).
Connect the speakers' or other audio output device's cable
4.
to the switcher's audio output captive screw connector.
5. Attach the contact closure device to the left three pins of
the 5-pole captive screw Contact/Auto-sw connector.
6. Connect power cords and turn on the devices in the
following order: display and audio output devices
(projectors, monitors, speakers), contact closure controller,
SW2 VGA DA2 A /AF switcher, and input devices
(computers, audio sources).
SW2 VGA DA2 A /AF • Installation and Operation
Tip (L)
Sleeve (Gnd)
2-9