Extron MLS 100 A Bedienungsanleitung

Extron niet gecategoriseerd MLS 100 A

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MLS 100 A • User Guide
About this Manual
This manual contains information about the Extron MLS 100 A Switcher
and on how to install, set up, and operate it.
About the MLS 100 A Switcher
The Extron MLS 100 A Switcher is a compact, quarter rack width switcher.
The MLS 100 A features four selectable audio inputs, and one Aux/Mix
input that is always active and can be mixed with any and all of the four
selectable audio inputs.
Front panel buttons, an RS-232-based control system, or an Extron
MediaLink™ Controller (MLC) can be used for input selection.
Features
• Furniture, rack, and projector mountability — MLS 100 A Switcher can be mounted under a desk or other furniture, or
mounted on a projector lift with optional brackets. Alternatively, they can be rack mounted on an optional rack shelf.
• Stereo audio input and output — Unbalanced stereo audio inputs can be output as balanced or unbalanced stereo audio,
and the audio output level can be adjusted.
• Mono auxiliary/mix audio input — The Aux/Mix port on each switcher lets you mix a mono, line level audio input signal with
that of one of the four selectable stereo audio inputs.
UL/Safety Requirements
The Underwriters Laboratories (UL) requirements listed below pertain to the safe installation and operation of the switcher.
1. This unit is not to be connected to a centralized DC power source or used beyond its rated voltage range.
NOTE: The Extron P/S 100 and other Extron power supplies may be used with the MLS.
2. Do not use the switcher near water.
CAUTION: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
ATTENTION : Afin de réduire les risques d’incendie ou de choc électrique, protégez cet appareil de la pluie ou de
l’humidité.
3. Clean the switcher only with a dry cloth.
4. Do not install the switcher near any heat source, such as a radiator, heat register, stove, or another apparatus (including
ampliers) that produces heat.
5. Unplug the switcher during lightning storms or when it will be unused for long periods.
6. This unit must be installed in accordance with the National Electrical Code.
Mounting the Switchers
The one rack unit high, quarter rack width switchers can be set on a table, mounted on a rack shelf, mounted under a desk or
tabletop, or mounted on a projector bracket. Go to www.extron.com to see optional mounting accessories.
2
MLS 100 A • User Guide (Continued)
Rear Panel Features and Cabling
Turn off and disconnect power from all the equipment before you connect cables to the
MLS.
Audio Connections
1 — Each of these 3-pole, 3.5 mm captive screw connectors accepts one unbalanced stereo or mono audioAudio Inputs
input. Wire each captive screw connector as shown in figure 1, depending on the input type.
Connect two RCA-style (tip-ring) connectors to the other end of each audio input cable as shown in gure 2.
L R
Audio Input Wiring
(unbalanced, stereo)
L R
Audio Input Wiring
(unbalanced, mono)
Left (+)
Right (+)
Gnd (Sle )eve,
Left (+)
Gnd (Sle
eve, )
Tip (+)
Slee (Gnd)ve
Figure 1. Figure 2. Captive Screw Connector RCA-style Connectors
2 —The Aux/Mix Mono audio channel is always active: its signalAux/Mix Mono audio input
is output no matter which, if any, other audio input (input 1, 2, 3, or 4) is selected. For
example, you could connect the output of a wireless microphone receiver to this port so the
presenter comments can always be heard and are independent of the A/V source used for
the presentation.
The mix output level can be adjusted between ‑43dB and +24dB.
Aux/Mix Input Wiring
(balanced/unbalanced, mono)
AUX
/
MIX
MONO
Tip ( )+
Ring ( )–
Gnd (Sle )eve,
NOTE: The Aux/Mix level must be adjusted physically via the front panel control. It cannot be
adjusted via software.
Connect a 3.5 mm, 3-pole captive screw connector to one end of an audio cable as shown at right.
3 — Connect self-powered speakers or another stereo audio device toAudio output (Preamp)
the MLS via this 5-pole, 3.5 mm captive screw connector. Depending on how the connector is
wired, the audio output can be balanced or unbalanced stereo audio. Wire the connector as
shown in figure 3.
Unbalanced Output
Tip
See Caution
Slee (s)ve
Tip
See Caution
Balanced Output
Tip
Ring
Slee (s)ve
Tip
Ring
L R
OUT
OUT
L R
Figure 3. Wiring the Connector
ATTENTION: For unbalanced audio, connect the sleeves to the ground contact. DO NOT connect the sleeves to the
negative (–) contacts.
ATTENTION : Pour l’audio asymétrique, connectez les manchons au contact au sol. Ne PAS connecter les manchons
aux contacts négatifs (–).
After all the equipment has been cabled and powered on, use the MediaLink Control Program or an controller to RS-232
set the per-input gain/attenuation to match the correct audio output level for the kind of output (balanced or unbalanced)
you need. See and for details on
Setting Up Optimal Audio Gain on page3 Switcher (MLS) Config on page13
determining and setting the gain/attenuation to produce the desired output levels.
NOTES:
•If you wire an audio output for balanced output, the MLS outputs a unity signal (input level = output level). Wiring an
audio output for unbalanced output causes the audio signal to be attenuated by 6dB.
•Overall volume control ranges from 0% (90 dB attenuation) to 100% (0dB attenuation). Adjustment increments are
1dB for steps from 1% to 40% volume. Adjustments are in 0.5 dB increments from 41% to 100% of full volume.
MLS 100 A
L R
A B
L RL RL R
123L R
4
AUX/MIX
MONO
AUDIO INPUTS MLC/RS-232
POWER
12V .5 MAX
PRE AMP
1 2 3 4
3
Control and Power Connections
4 — An Extron MediaLink Controller (MLC 206), a computer, or an RS-232 controller provides MLC/RS-232 Power port
remote control of input switching and volume, and also provides a way to set the switcher 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 , connect a cable from the host computer or a control stand-alone MLS switcher
Power Supply
Output Cord
A A
SECTION A–A
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 , connect a cable from the MLS switcher slaved to an MLC controller
MLC/MLS/Power port and from a 12VDC power supply, and tie all the drain wires to
the same ground.
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. See the MediaLink Control
Program help le for details on conguring an MLC-MLS system.
NOTES:
• An Extron IR Link infrared repeater cannot be used with the MLS 100 A Switchers. There is no connection for that
device control signals.
• The MLC to which the MLS 100 A 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
firmware and the control software.
• Connect the MLC RS-232 port to a computer or RS-232 controller, and send an
SIS command of Q to the MLC. The MLC responds with its firmware version.
• Connect the MLC RS-232 port to a computer, start the MediaLink control software,
and click on Help to display the software version, the MLC firmware version, and
the MLS firmware version as shown in the example on the right.
If your MLS rmware is an earlier version, contact Extron to obtain updated rmware.
Setting Up Optimal Audio Gain
Audio input levels and desired output levels vary depending on the types of equipment involved. Before setting the MLS 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
XX
Professional line level audio equipment
XX
+4 dBu 0 dBu -10 dBV
(-8 dBu)
-20 dBV
(-18 dBu)
Equipment
Categories
Consumer audio equipment (VCRs, DVDs,
laptop computers, portable audio devices)
Table 1. Typical Audio Levels
Gain and attenuation are adjustable (from -18dB to +24dB) for each input (1 through 4) via RS-232 control only (using
HyperTerminal, a third party controller, or the MediaLink Control/Conguration Software). The gain and attenuation for the Aux/Mix
input are adjustable only via the switcher front panel.

Produktspezifikationen

Marke: Extron
Kategorie: niet gecategoriseerd
Modell: MLS 100 A

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