Extron MLS 100 A Handleiding

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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.

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

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

AUX/MIX

MONO

AUDIO INPUTS MLC/RS-232

POWER

12V .5 MAX

PRE AMP

1 2 3 4

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

Professional line level audio equipment

+4 dBu 0 dBu -10 dBV

(-8 dBu)

-20 dBV

(-18 dBu)

Equipment

Product specificaties

Merk:	Extron
Categorie:	Niet gecategoriseerd
Model:	MLS 100 A
Kleur van het product:	Black, White
Gewicht:	300 g
Breedte:	110 mm
Diepte:	76 mm
Hoogte:	42 mm
LED-indicatoren:	Ja
AC-adapterfrequentie:	50/60 Hz
AC-adapter ingangsspanning:	100 - 240 V
Materiaal:	Metaal
Digitale horizontale frequentie:	15 - 150 kHz
Digitale verticale frequentie:	30 - 150 Hz
Temperatuur bij opslag:	-40 - 70 °C
Luchtvochtigheid bij opslag:	10 - 90 procent
Rack-montage:	Ja
Bandbreedte:	250 MHz
Aansluiting video:	VGA
Bedrijfstemperatuur (T-T):	0 - 50 °C
Relatieve vochtigheid in bedrijf (V-V):	10 - 90 procent
Code geharmoniseerd systeem (HS):	85176990
Synchronisatie ingangsimpedantie:	75 Ohm
Reflectieverlies:	-38 dB
Sync-uitgangsimpedantie:	75 Ohm