IMPORTANT:
Go to www.extron.com for the complete
user guide, installation instructions, and
specifications before connecting the
product to the power source.
CTR 8 • Setup Guide
The Extron CTR 8 provides contact closure input switching for most Extron switchers with
RS-232 capability. It allows simple push-buttons to remotely switch and mute video sources.
NOTE: For full installation and operation details, see the CTR 8 User Guide, available at
www.extron.com.
Installation
ATTENTION: Turn the input and output devices off and unplug their power cords.
Verify that the CTR 8 is disconnected from the power source before proceeding.
12V
POWER IN
POWER OUT
RS-232
Tx
4
CGT+V
3
CGT+V
2
CGT+V
1
CGT+V
8
CGT+V
7
CGT+V
6
CGT+V
5
CGT+V
G
Tx Rx G
1.0A
MAX
1.0A
MAX
CONTACT IN / TALLY OUT COM
REMOTE
CTR 8
Power LED
Lights green when
the unit is receiving
power.
CTR 8
Power LED — Lights green when the unit is receiving power.
4
3
2
1
1
1
Figure 1. CTR 8 Rear Panel
a
DC power input with loop-through — Wire the external 12 VDC power supply
as shown below and connect it to the Power In connector.
SECTION A–A
Ridges
Smooth
Power Supply Output Cord
A
A
3/16”
(5 mm) Max.
The Power Out connector allows power to be looped to an Extron device that
uses +12 VDC voltage. Follow the same pin diagram above to connect a device to
the Power Out connector.
b
Contact closure inputs with tally outputs — Connect contact closure source devices
to these 4-pole female captive screw connectors. Wire each connector as shown below.
CGT+V
Contact (C)
Ground (G)
Tally output (T)
T
ally voltage (+V)
Transmit (Tx)
Receive (Rx)
Ground (G)
Tx Rx
RS-232
G
Transmit (Tx)
Ground (G)
Tx
COM
G
NOTE:
• For “Show Me” cables, the ground pin connection is optional.
• Do not connect “Show Me” cables to the +V pin.
POWER IN
POWER OUT
1.0A
MAX
1.0A
MAX
POWER IN
POWER OUT
1.0A
MAX
1.0
A
MA
X
68-2524-50
Rev. A
12 13
Front Panel
12V
POWER IN
POWER OUT
RS-232
Tx
4
CGT+V
3
CGT+V
2
CGT+V
1
CGT+V
8
CGT+V
7
CGT+V
6
CGT+V
5
CGT+V
G
Tx Rx G
1.0A
MAX
1.0A
MAX
CONTACT IN / TALLY OUT COM
REMOTE
CTR 8
Power LED
Lights green when
the unit is receiving
power.
CTR 8
Power LED — Lights green when the unit is receiving power.
4
3
2
1
1
1
c
Remote RS-232 port — Connect the serial port of a control computer to this female captive
screw connector, as shown below, to control the CTR 8 using SIS commands.
CGT+V
Contact (C)
Ground (G)
Tally output (T)
Tally voltage (+V)
Transmit (Tx)
Receive (Rx)
Ground (G)
Tx Rx
RS-232
G
Transmit (Tx)
Ground (G)
Tx
COM
G
d
COM switcher port — Connect an Extron switcher to this
female captive screw connector as shown at right. Only
connect the Tx and G pins of the CTR 8.
Application Diagram
© 2013 Extron Electronics — All rights reserved. All trademarks mentioned are the property of their respective owners. www.extron.com
Transmit (Tx)
Ground (G)
Tx
COM
G
RxTx
REMOTE
CTR 8 Switcher
G
12V
POWER IN
POWER OUT
RS-232
Tx
4
CGT+V
3
CGT+V
2
CGT+V
1
CGT+V
8
CGT+V
7
CGT+V
6
CGT+V
5
CGT+V
G
Tx Rx G
1.0A
MAX
1.0A
MAX
CONTACT IN / TALLY OUT COM
REMOTE
100-240V ~ 50/60 Hz
-- A MAX
1
2
CONFIGURABLE
HDMI
IN1606
HDMI
5
6
HDMI
A
B
3
4
INPUTS OUTPUTS AUDIO INPUTS OUTPUTS REMOTE
L1
R
L2
R
L3
R
L4
R
L5
R
+48V
+48V
12
LR
VARIABLE
Tx Rx
RS-232
G
LAN
RESET
1
2
MIC/LINE
L6
R
INPUT
LAN
POWER
12V
500mA
MAX
1234
COM 3 IR
3
SGSG
Tx Rx
4
RELAY
3
4
COM1
Tx Rx
RTS CTS
COM 2 IR
1
SGSG
Tx Rx
2
RELAY
1
2
RS-232
RS-232
Ethernet
Ethernet
HDMI Video and
Embedded Audio
Power
Supply
CTR 8
IN1606
VGA/HDMI “Show Me” Cables
TCP/IP
Network
IPL 250
12V
- - A MAX
POWER IN
POWER OUT
REMOTE
COM
Tx
4
CGT+V
3
CGT+V
2
CGT+V
1
CGT+V
8
CGT+V
7
CGT+V
6
CGT+V
5
CGT+V
G
Tx Rx G
100-240V ~ 50/60 Hz
-- A MAX
1
2
CONFIGURABLE
HDMI
IN1606
HDMI
5
6
HDMI
A
B
3
4
INPUTS OUTPUTSAUDIO INPUTS OUTPUTSREMOTE
L1
R
L2
R
L3
R
L4
R
L5
R
+48V
+48V
12
LR
VARIABLE
Tx Rx
RS-232
G
LAN
RESET
1
2
MIC/LINE
L6
R
C
1
CGT+V
VGA/HDMI “Show Me” Cables
IN 1606
CTR 8
RS-232
Power
Supply
Display
Contact
Closure
and Tally
HDMI Video and
Embedded Audio
C
1
CGT+V
Display
Contact Closure and Tally
Contact Closure
and Tally
-
1
-
2
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