Installation

Extron electronic MLS 406SA, MLS 304SA Quick Start MLS 304MA, MLS 406, MLS 406MA, Installation

Quick Start — MLS 304MA, MLS 406, MLS 406MA

Step 1

Remove power from the switcher and the input, output, and control devices.

Step 2

Install the rubber feet on the bottom corners or rack mount the switcher.

Step 3

Connect input devices to the switcher. See chapter 2 for details and wiring diagrams.

MLS 304MA

Inputs 1 and 2: composite video and audio

Inputs 3 and 4: RGB computer video or composite video and audio

MLS 406, MLS 406MA

Inputs 1, 2, 3: S-video or composite video and audio

Inputs 4, 5, 6: RGB computer video, S‑video, or composite video and audio

Aux/Mix audio input

Connect a mono audio source to mix a line- level audio signal with the selected input’s audio. This channel is always active.

See chapters 3 and 4 for details on setting up the audio and configuring video.

Step 4

Connect cables from the MLS’s RGB, S-video, and video output connectors to the inputs on the display device.

Connect a cable between the Monitor Output port and the local monitor.

NThere are three modes (selectable only via RS‑232 control) for determining which input signal, if any, is sent to the Monitor Output port. For an explanation of modes and video routing, see Video Signal Routing on page 3-7. For selecting the mode, see chapter 4, Serial Communication.

Step 5

Connect a host computer to the RS‑232/MLC/IR control port (see Control Connection on page 2-6), load and start the control software, set up the video, select a Monitor Output mode, and select a Lineout/Preamp output level.

Step 6

Adjust the audio (sensitivity) level for each input. See Making adjustments on page 3-6.

Step 7

Connect audio devices to the Lineout and

Preamp audio outputs

•Lineout outputs a fixed, line level audio signal not affected by Volume knob adjustments.

•Preamp outputs a variable, line level audio signal for use with powered speakers or an amplifier. The volume can be attenuated via the Volume knob or RS‑232.

Lineout and Preamp outputs can be set up as

•-10 dBV (-8 dBu, 0.316 Vrms, default), unbalanced, for consumer level devices such as VCRs or stereo receiver-amplifiers

•+4 dBu (+6 dBV, 1.23 Vrms), balanced, for professional level devices such as mixers and power amplifiers

depending on how the connector is wired and how the MLS is set up via RS‑232 control. Selecting mono or stereo (via RS‑232) affects both of these ports. See Audio outputs on pages 2-9 through 2-10.

Step 8

Connect a host computer, control system, MediaLink Controller (MLC) and/or an Extron IR Link to the RS‑232/MLC/IR control port. See Control Connection on pages 2-7 through 2-8.

Step 7 — MLS 304MA, MLS 406MA

Connect speakers to the amplified output

(MLS 304MA, MLS 406MA) for mono audio out- put. See pages 2-11 through 2-13 for diagrams.

Set the rear panel toggle switch to the desired amplifier output type: transformer (Xfmr) (for a 70 V or 100 V system) or Direct (4 or 8 ohms).

up = 70 V or 100 V	NOTE	Both the toggle switch
		position and the
transformer
		wiring must match the

down = 4 ohm or 8 ohm direct connection

This output provides a mono signal even if the input is a stereo signal. For stereo output, use the non-amplified Lineout and Preamp outputs instead. See chapter 2, Installation.