Extron MLS 100 A Manual

Extron Ikke kategoriseret 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.

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

Audio Inputs — Each of these 3-pole, 3.5 mm captive screw connectors accepts one unbalanced stereo or mono audio

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.

Audio Input Wiring

(unbalanced, stereo)

Aux/Mix Input Wiring

(balanced/unbalanced, mono)

AUX

MIX

MONO

Audio Input Wiring

(unbalanced, mono)

Left (+)

Right (+)

Gnd (Sleeve, )

Left (+)

Gnd (Sle

eve, )

Tip (+)

Ring (–)

Gnd (Sleeve, )

Tip (+)

Sleeve (Gnd)

Figure 1. Captive Screw Connector Figure 2. RCA-style Connectors

Aux/Mix Mono audio input —The Aux/Mix Mono audio channel is always active: its signal

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.

Audio Input Wiring

(unbalanced, stereo)

Aux/Mix Input Wiring

(balanced/unbalanced, mono)

AUX

MIX

MONO

Audio Input Wiring

(unbalanced, mono)

Left (+)

Right (+)

Gnd (Sleeve, )

Left (+)

Gnd (Sleeve, )

Tip (+)

Ring (–)

Gnd (Sleeve, )

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.

Audio output (Preamp) — Connect self-powered speakers or another stereo audio device to

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.

Audio Output Captive Screw_MLS 100.eps

Unbalanced Output

Tip

See Caution

Sleeve (s)

Tip

See Caution

Balanced Output

Tip

Ring

Sleeve (s)

Tip

Ring

OUT

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 RS-232 controller to

set the per-input gain/attenuation to match the correct audio output level for the kind of output (balanced or unbalanced)

you need. See Setting Up Optimal Audio Gain on page3 and Switcher (MLS) Conﬁg on page13 for details on

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

AUX/MIX

MONO

AUDIO INPUTS

MLC/RS-232

POWER

12V .5A MAX

MLS 100 A

PREAMP

11223

Produkt Specifikationer

Mærke:	Extron
Kategori:	Ikke kategoriseret
Model:	MLS 100 A
Bredde:	110 mm
Dybde:	76 mm
Højde:	42 mm
Vægt:	300 g
Produktfarve:	Black, White
Opbevaringstemperatur (T-T):	-40 - 70 °C
Relativ luftfugtighed ved drift (H-H):	10 - 90 %
Relativ luftfugtighed ved opbevaring (H-H):	10 - 90 %
Driftstemperatur (T-T):	0 - 50 °C
Indgangsspænding for vekselstrømsadapter:	100 - 240 V
Frekvens for vekselstrømsadapter:	50/60 Hz
Materiale:	Metal
LED-indikatorer:	Ja
Harmoniseret systemkode (HS):	85176990
Stativ-montering:	Ja
Digital vertikal frekvens:	30 - 150 Hz
Digital horisontal frekvens:	15 - 150 kHz
Video porttype:	VGA
Båndbredde:	250 MHz
Synkroniser indgangsimpedans:	75 ohm (Ω)
Sync output impedans:	75 ohm (Ω)
Returdæmpning:	-38 dB