Manual
2-7
MLS 304 Series, MLS 406 Series • Installation
PRELIMINARY
RS-232/MLC/IR
Tx
Rx IR
12V
A
B
C
Transmit (Tx)
Receive (Rx)
Sleeve(s)
+12 V, 0.4 A power output
Ground ( )
Control connection
f
RS-232/MLC/IR control port —You can control the MLS switcher via an
RS-232 connection directly from a host computer, a control system, or a
MediaLink Controller (MLC). Alternatively, you can use IR remote control
via an Extron IR Link connected to this port.
Connect a cable between this port and an optional
Extron MLC MediaLink Controller or an optional
IR Link IR signal repeater.
• The MLC provides remote control of input switching
and volume.
• The IR Link accepts modulated IR signals
from a remote control so the remote control
can be used for selecting the switcher’s
inputs.
Extron Comm-Link cable is recommended
for this connection. If you use Comm-Link
cable, the switcher and controller (MLC) can be up to 250 feet (76.2 m) apart.
Wire the captive screw connector for connection to an IR Link, an MLC, or a
computer or control system as shown in the following four diagrams.
RS-232
MLC/IR
MediaLink Switcher to an MLC
MediaLink
Switcher
rear panel
RS-232/MLC/IR port
NOTE
The switcher provides up to 12 VDC, 0.40 A power to an MLC 206.
Other MLC models may draw more current than the MLS can provide.
Extron recommends using a separate power supply for the MLC.
Ground ( )
+12 VDC input
NOTE If you use cable that has a
drain wire, tie the drain wire
to ground at both ends.
RS-232
MLC/IR
MediaLink Switcher to an MLC
that has an external power supply
MediaLink
Switcher
rear panel
RS-232/MLC/IR port
NOTE
If using an external power
supply (instead of the MLS) to
power the MLC, you must
connect a ground wire
between the MLC and MLS.
NOTE If you use cable that has a
drain wire, tie the drain wire
to ground at both ends.
RS-232_MLC-IR port wiring_MLS304_062404.eps
RS-232
MLC/IR
Tx Rx IR +12V
Tx Rx IR
+12 V
Tx Rx IR
+
12V
MediaLink Switcher to an IR Link
MediaLink
Switcher
rear panel
RS-232/MLC/IR port
IR Link
port
A B C
A B C
A B C
MediaLink Switcher Rear Panel
RS-232
MLC/IR
TxRx IR
+
12V
A B C
MediaLink Switcher Rear Panel
RS-232
MLC/IR
TxRx IR +12V
A B C
MediaLink Switcher Rear Panel
RS-232
MLC/IR
TxRx IR +12V
A B C
RS-232
MLC/IR
RS-232 port
of a
computer or
control system
MediaLink Switcher to a
computer or control system
MediaLink
Switcher
rear panel
RS-232/MLC/IR port
NOTE
Connect a ground wire
between the MLC and the
computer or control system.
NOTE If you use cable that has a
drain wire, tie the drain wire
to ground at both ends.
Tx Rx IR +12V
A B C
MediaLink Switcher Rear Panel
RS-232
MLC/IR
TxRx IR +12V
A B C
Host Computer Control System
or
Ground ( )
+12 VDC
Transmit (Tx)
B
Receive (Rx)
A
Ground ( )
Transmit (Tx)
B
Receive (Rx)
A
Ground ( )
Transmit (Tx)
B
Receive (Rx)
A
250 feet (76.2 m) maximum
150 feet (45.7 m) maximum
Ground ( )
+12 VDC
IR (IR Link)
C
IR Link
MLA-Remote
SIGNAL
IR
A B C D E
D
DVD
MLC
MLS/Power
port
MLC
MLS/Power
port
A B
MLS
/
Power
Transmit (Tx)
Receive (Rx)
+12 VDC
Ground ( )
B
A
A B
MLS
/
Power
Transmit (Tx)
Receive (Rx)
B
A
Transmit (Tx)
Receive (Rx)
3
2
Ground all devices
External
Power Supply
(12 VDC, 1A max.)
External
Power Supply
MediaLink
Controller
(MLC)
MediaLink
Controller
(MLC)