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Installation, cont'd
Wiring the Power Connector
If using a different external power supply from the one provided
with the SW2/SW4, you may need to wire the connector for it.
To wire the power connector,
Cut the DC output cord to the length needed.
1.
2.
Strip the jacket to expose 3/16" (5 mm) of the conductors.
C
Exposing more than 3/16" (5 mm) of the copper
wires could allow the stripped wires to touch each
other, causing a short circuit. This could result in
the external DC power supply overheating and/or
burning.
Stripping the wires to expose less than the
recommended amount may cause them to slide out
of the connector too easily, even if they are tightly
pinched by the captive screws.
3.
Slide the leads into the supplied 2-pin captive screw plug
and secure them, using an Extron Tweeker or other small
screwdriver.
4.
To verify the power cord's polarity before connecting
it, plug in the power supply with no load and check the
output with a voltmeter.
5.
Use the supplied tie-wrap to strap the power cord to the
extended tail of the connector.
The figure below shows how to wire the connector.
7/8"
(22 mm)
Heat
1/8"
Shrink
(3 mm)
3/16"
(5 mm) Max.
Power connector wiring
The two power cord wires must be kept separate
W
while the power supply is plugged in. Remove
power before wiring.
C
Do not tin the stripped power supply leads before
attaching the captive screw plug to them. Tinned
wires are not as secure in the captive screw
connectors and can be easily pulled out. They may
also break after being bent several times.
2-10
SW DVI A Series • Installation
Tie Wrap
Orange Captive
Screw Connector
DVI-I Video Connectors
The DVI-I video input and output connectors have the following
pin configuration:
9
Female Connector
Pin
Signal
Pin
1
TMDS data 2– 9
2
TMDS data 2+ 10 TMDS data 1+
3
TMDS data
11
2/4 shield
4
Spare
12 Spare
5
Spare
13 Spare
6
DDC clock
14 +5 V power
7
DDC data
15 Ground (+5 V) 23
8
CEC control
16 Hot plug
N
The connectors on the switcher rear panel are DVI-I.
However, only DVI-D signals are accepted.
Audio Connectors
Audio input
The SW DVI A Series has two or four 3.5 mm TRS audio input
mini jacks for unbalanced audio.
Tip (L)+
Ring
(R)+
Sleeve ( )
3.5 mm Stereo Plug Connector
Input connector pinout for unbalanced stereo audio
(unbalanced)
SW DVI A Series • Installation
1
8
17
24
Pin
Signal
Signal
TMDS data 1–
17
TMDS data 0–
18
TMDS data 0+
TMDS data 1
19
TMDS data 0
shield
shield
20
Spare
21
Spare
22
TMDS clock
shield
TMDS clock+
24
TMDS clock–
detector
2-11
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