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SWP123 Presentation Switcher • Installation
2-3
Rear Panel Connectors
Figure 2-2 — Rear panel of the SWP123
1
Microphone input — 3-pin female XLR connector for an external
microphone
2
+24V Phantom Power On/Off — This switch turns the phantom power
(24V) to the microphone input connector (3-pin female XLR) on or off.
3
Talk Over Threshold Adjust potentiometer — This pot adjusts the talk-
over sensitivity at the microphone input.
The range of the pot is 3/4 of a turn, so care should be taken not to force or
over turn this pot.
4
Audio (VGA) input group — Eight female RCA connectors (four right and
four left) for audio input (numbered 1 to 4)
5
Audio (VGA) output — One 5-pole captive screw connector for stereo
output from the VGA group input
6
Audio (S-video) input group — Eight female RCA connectors (four right
and four left) for audio input (numbered 1 to 4)
7
Audio (S-video) output — One 5-pole captive screw connector for stereo
output from the S-video group input
8
Audio (Composite) input group — Eight female RCA connectors (four right
and four left) for audio input (numbered 1 to 4)
9
Audio (Composite) audio output — One 5-pole captive screw connector for
stereo output from the Composite Video group inputs
10
Master Audio output — One 5-pole captive screw connector for the Master
Audio stereo output
11
AC power — Standard AC power connector for a power source of
100 – 240 VAC, operating at 50/60 Hz
12
AC Fuse holder — Remove this holder to change out the AC fuses (1.6 A,
250 V, Time Delay).
To avoid electric shock, unplug power before attempting to change the
fuse.
13
Serial Format Select DIP switch — Allows the switcher to
be configured to accept RS-232 (all switches left) or RS-422/
RS-485 (all switches right) communication standard.
MIC INPUT
RX+
RX-
TX+
TX-
GND
RS422/485
LISTED
1T23
I.T.E.
C
RS232
+
-
+
R
L
-
+
-
+
R
L
-
L
R
L
R
L
R
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [S-VIDEO]
INPUT 4
OUTPUT
+
-
+
R
L
-
L
R
L
R
L
R
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [COMPOSITE]
COMPOSITE VIDEO
MADE IN U.S.A.
INPUT 4
INPUT 1
INPUT 2
INPUT 3
INPUT 4
OUTPUT
OUTPUT
S-VIDEO
INPUT 1 INPUT 2 INPUT 3 INPUT 4
OUTPUT
+
-
+
R
L
-
L
R
L
R
L
R
100-240V 0.4A 50/60Hz
MASTER
AUDI O
OUTPUT
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [VGA]
INPUT 4
INPUT 4 OUTPUT INPUT 3
VGA
INPUT 2INPUT 1
OUTPUT
SERIAL
PORT
SERIAL
FORMAT
SELECT
MADE IN
USA
FUSE: 1.6A 250V
TIME DELAY
+24V
PHANTOM
POWER
OFF
ON
+
TAL K O VER
THRESHOLD
ADJUST
SWP123-2
11
1
4
18
20
19
17
15
16
2
3
5
6
7
10
14
13
12
8
9
RS-232
RS-422/485