Extron electronic MLS 304MA ユーザーズマニュアル

This manual covers the installation, setup, programming, and use of the Extron 

MLS 304MA, MLS 304SA, MLS 406, MLS 406MA, and MLS 406SA MediaLink

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switchers.  The three models share many features, and instructions apply to 

all three unless otherwise stated.  Throughout the manual these switchers are 

interchangeably referred to as MLS, MediaLink switcher, and switcher.  Procedures 

or explanations that are model-specific mention the model name (e.g. MLS 406MA).

The Extron MLS 304MA, MLS 304SA, MLS 406, MLS 406MA, and MLS 406SA 

are four- and six-input, active switchers.  They accept RGB computer video (all 

models), S-video (MLS 406 Series), composite video inputs (all models), stereo 

audio inputs, and a line level mono audio auxilliary/mixer input.
Each switcher has a local monitor loop-through/output in addition to the RGB 

and video projector/plasma display output and balanced or unbalanced lineout 

and preamp audio outputs.  If desired, the monitor output can be used as a second 

RGB display output instead of for a local monitor.  Additionally, the MA models 

offer amplified mono audio output for 4 ohm, 8 ohm, or distributed 70 V or 100 V 

speaker systems.  The SA models offer amplified stereo audio output for 4 ohm or 

8 ohm speaker systems.
These switchers can all be set up and controlled via the front panel buttons or via 

an RS-232 connection from a computer, a control system, or an Extron MediaLink 

Controller.  Some setup options are available only via the included Windows-based 

MediaLink Control Program.  With the addition of an optional Extron IR Link 

infrared signal repeater, an Extron MediaLink IR remote control can be used for 

input selection and volume adjustment.

•  High RGB video bandwidth (280 MHz at -3 dB)
•  Triple-Action Switching

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 (RGB delay switching)

•  Video format versatility: the switchers accept RGB computer video, S-video 

(MLS 406, MLS 406MA, MLS 406SA), and composite video

•  Monitor Output for local monitor loop-through or for an additional RGB output
•  Aux/Mix audio input for mixing mono line level audio with the switchable 

audio input

•  Adjustable audio bass, treble, and volume
•  Individually adjustable audio input levels
•  Balanced or unbalanced preamp audio output
•  Loudness control
•  Ability to lock the front panel to prevent unauthorized access (executive mode)
•  Control and configuration via RS-232
•  Ventilated 1U, rack mountable, metal enclosure

•  Integrated 20 watt mono audio amplifier for 4 ohm or 8 ohm, or 16 watts for 70 V 

or 100 V distributed output

•  Integrated 24 watt audio amplifier for stereo or dual mono 4 ohm output or  

16 watts for stereo or dual mono 8 ohm output