Extron Electronics MLS 103 SV - Manual (Page 10)

MediaLink ™ VersaTools © Switchers • Installation MediaLink ™ VersaTools © Switchers • Installation
Installation, cont’d
2-9
Setting Up Optimal Audio Gain
Audio input levels and desired output levels vary depending on
the types of equipment involved. Before setting the MLS’s per-
input gain or attenuation, determine the levels of the input and
output equipment. Use the table below as a general guide.
Typical Audio Levels
for Various Equipment Types
Input/Output Levels
X X Professional line level audio equipment
X X
+4 dBu 0 dBu -10 dBV
(-8 dBu)
-20 dBV
(-18 dBu)
Equipment Categories
Consumer audio equipment (VCRs, DVDs,
laptop computers, portable audio devices)
Gain and attenuation are adjustable (from -18 dB to +24 dB) for
each input (1 through 4) via RS-232 control only (using
Once the system has been cabled and set up via the control
software and the front panel Aux/Mix adjustment, the MLC or
a host computer communicating through the MLC can be used
to remotely control the switcher. Refer to chapter 4 of the
MediaLink Controllers User’s Manual and to the MediaLink
Control Program help file for details on configuring an
MLC-MLS system.
An Extron IR Link infrared repeater cannot be used with
the MLS 100 Series Switchers. There is no connection
for that device’s control signals.
The MLC to which the MLS 100 Series switcher is
connected must have MLC firmware version 1.04 or
higher
. The control/setup software must be version
2.0 or higher . Use one of the following methods to find
out the version levels of the MLC’s firmware and the
control software.
• Connect the MLC’s RS-232 port to a computer or
RS-232 controller, and send an SIS command of Q (see
chapter 4) to the MLC. The MLC responds with its
firmware version.
• Connect the MLC’s RS-232 port to a computer, start
the MediaLink control software
(see chapter four), and click on
Help to display the software
version, the MLC’s firmware
version, and the MLS’s
firmware version as shown in
the example at right.
If your MLS’s firmware is an earlier version, contact
Extron to obtain updated firmware.
MLC/RS-232
POWER
A B
MLS 100 Series
Switcher
MLC/RS-232
Power Port
A B C D E A B C IR Display/Source Control Extron Switcher Control Relays IR / RCM RS-232 D E A B C A B D 1A 1B 2A 2B 3A 3B 1 2 3 4 5 6 Tally Out MLS/Power 33-644-01 A 07 01 Pr
inted in the USA
MLC 206 Bottom Panel
MLS 103 V
Rear Panel
3 1 2 OUTPUT INPUTS
MLS 103 V
L R
A B
L R L R L R 1 2 3 L R 4 AUX/MIX MONO AUDIO INPUTS PREAMP CONTROL/ POWER
12V .5A MAX
Ground ( )
+12 VDC input
+12 VDC
Ground ( )
Transmit (Tx)
B Receive (Rx)
A Transmit (Tx)
Receive (Rx) B
A
Connecting an MLC 206
to a MediaLink VersaTools Switcher
and an external power supply
NOTE You must connect a
ground wire between
the MLC and MLS.
MLC 206's
MLS/Power
Port NOTE If you use cable that has a
drain wire, tie the drain wire
to ground at both ends.
A B
MLS / Power
Ground all devices
External
Power Supply
(12 VDC, 1A max.)
External
Power Supply
250 ft
(76.2 m)
max.
2-8
Power Supply
Output Cord
A A
SECTION A–A
Control and power connections
11 MLC/RS-232 Power port (all models) — An Extron MediaLink
Controller (MLC 206), a computer, or an RS-232 controller
provides remote control of input switching and volume, and
also provides a way to set the switcher’s audio input levels. To
control and/or set up the MLS, connect a cable between this
5-pole, 3.5 mm captive screw connector and an optional
MLC 206, computer, or a RS-232 controller. Also connect an
external 12 VDC power supply here to provide power to the
MLS and to the optional MLC.
Extron Comm-Link cable is recommended for this connection.
If using Comm-Link cable, the switcher and controller can be up
to 250 feet (76.2 m) apart. Wire the captive screw connector for
connection to an MLC 206 or control system as shown below.
• For a stand-alone MLS switcher, connect a cable from the host
computer or a control system to this connector to set up and
remotely control the switcher,
connect a 12 VDC power
supply, and tie all the drain
wires to the same ground.
• For an MLS switcher slaved
to an MLC controller
, connect a cable from the MLC’s MLS/
Power port and from a 12 VDC power supply, and tie all the
drain wires to the same ground.