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Summary of Contents for Extron electronics MLS 304MA
- Page 1 MLS 304MA, MLS 304SA, MLS 406, MLS 406MA, MLS 406SA MediaLink Switchers ™ 68-775-01 Rev. C 06 06...
- Page 2 Precautions Safety Instructions • English Warning Power sources • This equipment should be operated only from the power source indicated on the product. This This symbol is intended to alert the user of important operating and maintenance equipment is intended to be used with a main power system with a grounded (neutral) conductor. The (servicing) instructions in the literature provided with the equipment.
- Page 3 Quick Start — MLS 304MA, MLS 406, MLS 406MA Installation Step 6 Adjust the audio (sensitivity) level for each input. Step 1 See Making adjustments on page 3-6. Remove power from the switcher and the input, Step 7 output, and control devices.
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Page 4: Audio Configuration
Quick Start — MLS 304MA, MLS 406, MLS 406MA, cont’d Step 8 4a. Enter setup mode: press and hold an in- put button for 3 seconds. The input’s LED Connect all the devices’ power cords, and power blinks. on the system. -
Page 5: Table Of Contents
Table of Contents Chapter 1 • Introducton ......................1-1 About ths Manual ........................1-2 About the MLS 304 Seres and the MLS 406 Seres ..........1-2 Features ............................1-2 All models ..........................1-2 MA models ..........................1-2 SA models ...........................1-2 Chapter 2 •... - Page 6 Audo Reference Levels ......................A-7 Audo Block Dagrams ..................... A-8 MLS 304MA audio block diagram ..................A-8 MLS 304SA audio block diagram ..................A-9 MLS 406, MLS 406MA audio block diagram ..............A-10 MLS 406SA audio block diagram ................... A-11 All trademarks mentioned in this manual are the properties of their respective owners.
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Page 7: About ThS Manual
MLS 304 Series and MLS 406 Series Chapter One Introduction About this Manual About the MLS 304 Series and MLS 406 Series Features... -
Page 8: All Models
(e.g. MLS 406MA). About the MLS 304 Series and the MLS 406 Series 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. -
Page 9: Ul/Safety RequRements
MLS 304 Series and MLS 406 Series Chapter Two Installation UL/Safety Requirements Mounting the Switcher Rear Panels and Cabling Application Diagrams... -
Page 10: Important Safety Instructions
Installation UL/Safety Requirements The Underwriters Laboratories (UL) requirements listed below pertain to the safe installation and operation of a MediaLink Switcher. Important Safety Instructions Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. -
Page 11: MountNg The SwTcher
Rack Mount MLS 304MA.eps Although it is not required, for the models with audio amplification (MLS 304MA, MLS 304SA, MLS 406MA, MLS 406SA) Extron recommends allowing one rack unit of space (1.75"/4.5 cm) above and below the switcher for air circulation to prevent overheating. -
Page 12: Rear Panels And CablNg
The front panel power LED ( ) lights while the MLS is receiving power. A/V input connections B Video inputs — MLS 304MA Rear Panel MLS 304MA MLS 304SA: connect a composite video source device to each of OUTPUTS INPUTS AUX/MIX AUDIO INPUTS these female RCA (tip-ring) connectors for video inputs 1 and 2. - Page 13 Computer video (and audio) inputs — MLS 304MA and MLS 304SA inputs 3 and 4; and MLS 406, MLS 406MA, and MLS 406SA inputs 4, 5, and 6, all on 15-pin HD connectors; are individually buffered and provide ID bit termination.
- Page 14 Installation, cont’d Tip (L) For these inputs (excluding input 4 on the Ring (R) MLS 406/MLS 406MA/MLS 406SA), connect the corresponding unbalanced stereo audio signal to the 3.5 mm mini stereo (tip-ring-sleeve) jack. Wire the stereo connectors as shown at right. Sleeve ( ) 3.5 mm Stereo Plug After the audio inputs and outputs are...
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Page 15: Control Connection
Control connection RS-232/MLC/IR control port —You can control the MLS switcher via an RS-232 connection directly from a host computer, a control system, or a MediaLink Controller (MLC). Alternatively, you can use IR remote control via an Extron IR Link connected to this port. Tx Rx IR Connect a cable between this port and an optional Extron MLC MediaLink Controller or an optional... - Page 16 B Receive (Rx) Transmit (Tx) Transmit (Tx) Receive (Rx) MediaLink Controller 250 feet (76.2 m) maximum (MLC) MLS/Power port NOTE If you use cable that has a drain wire, tie the drain wire Installation, cont’d MLS / Power to ground at both ends. MediaLink Switcher to an MLC RS-232 MLC/IR...
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Page 17: Video Output, Local Monitor, And Audio Output Connections
MLS 406, MLS 406MA, and MLS 406SA Rear Panel Video output, local monitor, and audio output connections MLS 304MA Rear Panel OUTPUTS INPUTS AUX/MIX AUDIO INPUTS Tx Rx IR AMPLIFIED OUTPUT 20 WATTS MONO AUDIO ADJUST XFMR -42dB 100V A B C... - Page 18 If the Loudness feature is turned on, the gains for bass and treble frequencies are affected for all outputs whenever volume is adjusted. Amplified output (MLS 304MA, MLS 406MA only) — Cable speakers to this 5-position screw terminal for a mono amplified audio output. This provides a mono output signal even if the input is a stereo signal. For stereo output, use the non-amplified Lineout and Preamp outputs instead.
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Page 19: Wiring For 4 Ohm Or 8 Ohm Speakers (Ma Models)
The MA models’ amplifier power-up delays are approximately • 10 seconds for 70 V or 100 V output, 8 seconds to hear the relay click • 8 seconds for 4 ohm or 8 ohm output Wiring for 4 ohm or 8 ohm speakers (MA models) The maximum power output when an MLS 304MA or MLS 406MA is wired for 4 ohm or 8 ohm speakers is 20 watts per channel. -
Page 20: Wiring For A 70 Volt Or 100 Volt Distributed Speaker System (Ma Models)
Installation, cont’d Wiring for a 70 volt or 100 volt distributed speaker system (MA models) The speaker taps should not exceed the amplifier’s maximum power output. The maximum power output when the MLS is wired for 70 volt or 100 volt systems is 16 watts. Flip the toggle switch up to select a distributed 70 V or 100 V system connection. Use the appropriate wiring for the load as shown in the following illustrations. -
Page 21: Wiring For 4 Ohm Or 8 Ohm Speakers (Sa Models)
Amplified output (MLS 304SA, MLS 406SA only) — Cable speakers to this 5-position screw terminal for either stereo or dual mono amplified audio output. The switcher’s default setting is stereo output. Dual mono (the same signal output on both channels) can be selected via software. Do not short the terminals to ground or the amplifier will be damaged. -
Page 22: Speaker Arrangement Examples
Installation, cont’d Do not short the terminals to ground or the amplifier will be damaged. Do not connect anything to the middle position of the 5-position screw terminal; it is not connected to ground. Do not bridge mono outputs. Bridging could damage the amplifier. Speaker arrangement examples Ceiling and program speakers can be arranged several different ways. The following factors affect the choice of speaker placement: • Dimensions of the room • Room acoustics • Desired evenness of sound coverage •... -
Page 23: Application Diagrams
U TS N IT U TS IN P V ID -6 0H 0- 24 Extron Laptop M AX MLS 304MA 1. 0A w/ Audio MediaLink Switcher Mono Amplified Output Projector Control VI DE O JE O FF PT OP M UT... - Page 24 Installation, cont’d p to D IS W ER Projector Control t r o Extron System Control MLC 206 MediaLink Controller IF IE R IG Projector -2 32 IN P D IO L IN X /M -4 2d D IO IN P L IN D IO 4/8 ohm Stereo...
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Page 25: Chapter 3 • OperatOn And Setup
MLS 304 Series and MLS 406 Series Chapter Three Operation and Setup Front Panel Features and Operation Setting Up and Optimizing the Audio Video Signal Routing Remote Control Troubleshooting... - Page 26 Operation and Setup Front Panel Features and Operation MLS 304 Series Front Panel VOLUME INPUT SELECT INPUT SELECT VOLUME MLS 406 Series Front Panel The MLS 304MA and MLS 304SA have identical front panel features. The MLS 406, MLS 406MA, and the MLS 406SA have identical front panel features. Power indicator LED — When lit this LED indicates that the switcher is powered on. Input selection buttons and indicator LEDs — Press one of these buttons to select the desired audio and video input. The corresponding LED lights and remains lit while an audio-video input is selected. During audio breakaway (selectable only via RS-232 control, and described in Special Features on page 4-9), audio is switched separately from video. The selected video input’s LED lights steadily, and the audio input’s LED blinks.
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Page 27: Front Panel Security Lockout (Executive Modes)
• In setup mode these LEDs function as input level indicators. Rotate the Volume knob and observe the LEDs to set up the proper audio input levels. MLS 304MA, MLS 304SA, MLS 406MA, MLS 406SA Clip: if blinking/lit, the level is set too high. Normal: a blinking LED indicates that the level is set properly for max. power output. Signal : when lit this LED indicates that a signal of at least -20 dBV (-18 dBu) is detected at the input. -
Page 28: Enabling/Disabling Executive Mode 1; Disabling Executive Mode 2
Operation and Setup, cont’d Enabling/disabling executive mode 1; disabling executive mode Press and hold input selection buttons 1 and 4 simultaneously for 3 seconds as shown below. When all of the input selection LEDs light, the switcher has enabled or disabled executive mode, and you can release the buttons. INPUT SELECT INPUT SELECT Press and hold buttons 1 and 4 All input selection buttons light for 1 second to indicate simultaneously for 3 seconds. that executive mode 1 has been enabled or disabled, or that executive mode 2 has been disabled. -
Page 29: Configuring Lineout And Preamp Output Levels
Configuring Lineout and Preamp output levels Before adjusting any input levels, you must select an output level from the following options. You do not need to change the output level if the Lineout and Preamp outputs will not be used. • -10 dBV, unbalanced (consumer) (default): typically used when the switcher’s output is connected to consumer products such as VCRs, stereo receiver- amplifiers, or self-powered speakers with unbalanced inputs • +4 dBu, balanced (professional): typically used when the switcher’s output is connected to professional products such as mixers, power amplifiers, and some assistive listening devices with balanced inputs. Check the manufacturers’ specifications for details on input/output devices you will connect to the Preamp and Lineout outputs. Adjusting audio input levels Adjusting the input level (sensitivity) for each input via the front panel or the supplied control software will ensure that the switcher can deliver maximum power out of the amplifier, output the proper signal on the Lineout and Preamp outputs, and prevent noticeable jumps in audio levels during input switching. The input level (sensitivity) can be adjusted (-42 dB to +24 dB) for all of the inputs, including the Aux/Mix input. The default input level (sensitivity) for each input is set for -10 dBV, unbalanced, consumer-type signals. The Auxiliary/Mix input level can be adjusted via the rear panel only. It cannot be adjusted via the control software. Common output levels for audio source devices range from -20 dBV, unbalanced, to +4 dBu, balanced. If the input level sensitivity settings are not closely matched to the source devices’ levels, the signal may be overdriven and distorted. • Consumer portable devices such as personal CD players and laptops typically have fixed and/or variable unbalanced outputs. If connecting a variable level output to the switcher, you must make adjustments with the source’s volume... -
Page 30: Making Adjustments
Volume knob to adjust the input level. For the MA and SA models, in setup mode a blinking or lit Mid/normal LED indicates that the power amplifier can deliver maximum power output. MLS 304MA, MLS 304SA, MLS 406MA, MLS 406SA Clipping level • Max LED blinks or lights: the audio input level is too high; audio will be distorted. Lower the input gain so that this LED does not turn on. -
Page 31: Monitor Output Modes
Video Signal Routing The input’s signal format (RGB, S-video, or composite video) determines where the signal is output. Composite video signals are always output on the Video BNC connector. S-video signals (MLS 406 Series only) are always output on the Y and C (luma and chroma) BNC output connectors. RGB/computer-video input signals are sent to the RGB output BNC connectors, but only if the input is configured as an RGB input. See pages 2-4 through 2-6 for information on cabling. See pages 4-4 through 4-11 for information on video configuration. Monitor Output modes Which signal, if any, is output via the Monitor Output connector depends on the selected input’s signal type and on the Monitor Output mode. Monitor Output modes are selectable only via RS-232 control (see chapter 4, Serial Communication). • Mode changes affect only how the Monitor Output is determined. • Changing the mode does not affect the other outputs in any way. Standard mode (mode 3) • If the selected input is S-video or composite video, there is no Monitor Output. • If the selected input is RGB, that input’s signal routed to the Monitor Output. DA (distribution amplifier) mode (mode ) • If any configurable input (3 or 4 on the MLS 304MA and MLS 304SA; 4, 5, or 6 on the MLS 406, MLS 406MA, and MLS 406SA) is S-video or composite video, there is no Monitor Output. • If all the configurable inputs are set for RGB, the input 4 signal on the MLS 304MA/MLS 304SA or the input 6 signal on the MLS 406/MLS 406MA/ MLS 406SA becomes the Monitor Output, no matter which input is selected. -
Page 32: Remote Control
Operation and Setup, cont’d Monitor Output Modes MLS 304MA, MLS 304SA Mode Selected input Input special conditions Monitor Output Standard Any composite video input n.a. None Any RGB input n.a. Selected input Any input 3 and 4 = RGB Input 4... -
Page 33: If The Image Does Not Appear Or There Is No Sound
Troubleshooting Power on the input and output devices and the switcher. The image should appear on the screen, and sound should be audible. If the image does not appear or there is no sound Ensure that all devices are plugged in and receiving power. The switcher’s power LED ( ) lights if the it is receiving power and an active sync signal. Check the cabling, connector wiring, and grounding, and make adjustments as needed. To test the system setup and output, substitute a video or audio/video test generator for one of the input devices. Use the control software or a control system to verify that the audio and/or video is not muted or set to input 0. If no signal is being output from the Monitor Out port, check which Monitor Out mode has been selected. You may need to change the setting to another mode to obtain the desired output. See pages 3-7, 3-8, and 4-10. Call the Extron S Sales and Technical Support Hotline if needed. If the switcher does not respond to controls Executive mode 1 or 2 may be active. To disable either executive mode, press and hold input buttons 1 and 4 for 3 seconds, then release them when the input LEDs blink. Executive modes can also be disabled via RS-232 control. Via RS-232 verify that the configurable inputs (inputs 3 and 4 on the MLS 304MA or MLS 304SA; inputs 4, 5, and 6 for the MLS 406/MLS 406MA/ MLS 406SA) have been set up for the correct input type (RGB or composite video). -
Page 34: If You Are Unable To Configure The Mls Via The Windows -Based Software
Operation and Setup, cont’d If you are unable to configure the MLS via the Windows -based ® software Check the MediaLink Control Software to determine its version number. The software version number appears in the top bar of the program’s window: These MLS 304 Series and MLS 406 Series switchers can be set up using software version 2.1 or higher. Earlier versions are not designed to work with these models. Verify that the connector at the RS-232/MLC/IR port is correctly wired and that the PC’s correct COM port is selected when you start the software. 3-10 MLS 304 Series, MLS 406 Series • Operation and Setup... -
Page 35: Rs-232 Programmer's GuDe
MLS 304 Series and MLS 406 Series Chapter Four Serial Communication RS-232 Programmer’s Guide Control Software for Windows... -
Page 36: Host-To-Mls Communications
Serial Communication The MediaLink switcher can be remotely set up and controlled via a host computer or other device (such as a control system) attached to the rear panel RS-232/MLC/IR port. Alternatively, the switcher can be controlled by an optional MediaLink Controller (MLC) (connected to the same port) or by an RS-232 device acting through the MLC. -
Page 37: Using The Command/Response Tables
= Executive mode (front panel lockout) status (0 dB through +24 dB in 1 dB steps) 0 = unlocked (default) (default = 0 dB for MLS 304MA, MLS 406, 1 = front panel except volume adjustment is MLS 406MA; default = +6 dB for MLS 304SA,... -
Page 38: Command/Response Table For Sis Commands
Select a video input. X! & Vid X! ] Select input X! video only. Video configuration (MLS 304MA inputs 3 and 4; or MLS 406/406MA inputs 4, 5, and 6) Set the video signal type. X@*X#\ Typ X# = ____] Set the input signal type for input X!. - Page 39 Command/response table for SIS commands (continued) Command ASCII Command Response Additional description (host to switcher) (switcher to host) Increment the volume. Vol X1) ] Increase audio output. Decrement the volume. Vol X1) ] Decrease audio output. View the volume level. Vol X1) ] Show the output volume.
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Page 40: Upload Firmware
Ver X1! ] Show the switcher’s firmware version. Request the part number. N60-5X0-0X ] Show the MLS’s part # – MLS 304MA: 60-550-01 MLS 304SA: 60-550-02 MLS 406: 60-560-01 MLS 406MA: 60-560-02 MLS 406SA: 60-560-03. Request general info. (see below) Show the MLS’s status. -
Page 41: Command/Response Table For Special Function Sis Commands
Command/response table for special function SIS commands The syntax for setting a special function is __ * #, where __ is the function number and is the value. To view a function’s setting, use __#, where __ is the function number. In the following table the values of variable are different for each command/function. -
Page 42: Control Software For WNdows
Serial Communication, cont’d Control Software for Windows The included Extron MediaLink Control Program for Windows offers another way to control the switcher via RS-232 connection in addition to the Simple Instruction Set commands. The control program’s graphical interface includes the same functions as those on the switcher’s front panel and some additional features that are available only through the Windows-based software. -
Page 43: User Mode Screen
User Mode Screen The User Mode screen, shown below, includes the most frequently used controls: it emulates the front panel for basic functions (input selection, volume control). See Front Panel Features and Operations on page 3-2 for details on basic functions. Special features Audio/video breakaway switching —... -
Page 44: Switcher (Mls) Config Screen
Configuration section choices vary depending on the MLS model. Sample Switcher (MLS) Config screen for an MLS 406 Series switcher Sample of the top half of the Switcher (MLS) Config screen for an MLS 304MA or MLS 304SA 4-10 MLS 304 Series, MLS 406Series • Serial Communication... - Page 45 Lineout and Preamp outputs. • Set the video format: • Composite video or RGB for inputs 3 and 4 on an MLS 304MA or MLS 304SA • Composite video/S-video or RGB for inputs 4 through 6 on an MLS 406, MLS 406MA, or MLS 406SA •...
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Page 46: File Menu Options
This procedure must be performed using a PC on which the MediaLink Control Software (version 2.1 or higher for MLS 304MA, MLS 406, or MLS 406MA; version 2.4 or higher for MLS 304SA and MLS 406SA) has been installed. The PC’s RS-232 port must be directly cabled to the MLS’s RS-232/MLC/IR port. - Page 47 From the File pulldown menu in the upper-left corner, select Update Firmware. The MediaLink Control Software closes, and a separate utility program opens and displays a window indicating the current firmware version. Click Upload Firmware file. You are prompted to select the firmware file that you downloaded in step 1.
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Page 48: Using The Help Program
Serial Communication, cont’d When the firmware uploading is complete, a dialog box appears and asks you • to exit the firmware update utility program if the new firmware loaded correctly (if the correct firmware version is displayed in the program window, as shown in the example below) •... -
Page 49: Part Numbers And AccessorEs
MLS 304 Series and MLS 406 Series A ppendix A Reference Material Specifications Part Numbers and Accessories Frequency Response Graph for the Loudness Feature Audio Reference Levels Audio Block Diagrams... -
Page 50: Specifications
Reference Material Specifications Video Gain ..........Unity Bandwidth ........280 MHz (-3 dB) Differential phase error ....1.0º at 3.58 MHz and 4.43 MHz Differential gain error ....1.0% at 3.58 MHz and 4.43 MHz Crosstalk ........-68 dB @ 10 MHz, -39 dB @ 100MHz Switching speed ...... - Page 51 Nominal level ........ 1 Vp-p for Y of S-video, and for composite video 0.7 Vp-p for RGB 0.3 Vp-p for C of S-video (MLS 406 Series) Minimum/maximum levels RGB ........Analog: 0.3 V to 1.5 Vp-p (follows input) Composite video ....Analog: 0.4 V to 2.0 Vp-p (follows input) Impedance ........
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Page 52: Included Parts
Reference Material, cont’d Audio input Number/signal type MLS 304 Series ....4 stereo, unbalanced 1 Aux/Mix balanced/unbalanced mono (nonswitchable) MLS 406, Series ....5 stereo, unbalanced (inputs 1-3, 5, 6) 1 stereo, balanced/unbalanced (input 4) 1 Aux/Mix balanced/unbalanced mono (nonswitchable) Connectors MLS 304 Series .... - Page 53 Maximum power output Direct (4/8 ohm) ....20 watts max. (continuous) Transformer (70/100 V) ..16 watts max. (continuous), transformer coupled Protection ........Input limiting, thermal, short circuit Audio output — stereo power amp (MLS 0SA, MLS 06SA only) Number/signal type ....(1) stereo (default) or dual mono (configured via software) Connector ........
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Page 54: Optional Accessories
Reference Material, cont’d Part Numbers and Accessories These items are included in each order for an MLS switcher: Replacement Included parts part number MLS 304MA switcher 60-550-01 MLS 304SA switcher 60-550-02 MLS 406 switcher 60-560-01 MLS 406MA switcher 60-560-02 MLS 406SA switcher... -
Page 55: Frequency Response Graph For The Loudness Feature
Frequency Response Graph for the Loudness Feature The following graph represents the frequency response of these MLS models when the loudness feature has been turned on. Frequency (Hz) Audio Reference Levels The specifications for the audio source devices may be listed in one of several units. Or you may wish to use a sine wave generator such as the Extron VTG 300 as a source for setting up audio inputs before the input devices are available. - Page 56 Reference Material, cont’d Audio Block Diagram for MLS 304MA.eps Audio Block Diagrams MLS 0MA audio block diagram CTRL CTRL LEFT Configurable output levels -10dBV unbalanced CTRL LEFT +4dBV balanced LEFT LEFT CHN LEFT AUX/MIX LINEOUT LEFT Gain/Attenuation: MONO -42dB to +24dB...
- Page 57 Audio Block Diagram for MLS 304SA.eps MLS 0SA audio block diagram CTRL CTRL LEFT Configurable output levels -10dBV unbalanced CTRL LEFT +4dBV balanced LEFT LEFT CHN LEFT AUX/MIX LINEOUT LEFT Gain/Attenuation: MONO -42dB to +24dB RIGHT RIGHT CHN RIGHT RIGHT AUX/MIX RIGHT RIGHT...
- Page 58 Reference Material, cont’d Audio Block Diagram for MLS 406_406MA.eps MLS 06, MLS 06MA audio block diagram CTRL CTRL LEFT LEFT Configurable output levels -10dBV unbalanced CTRL LEFT +4dBV balanced LEFT LEFT CHN AUX/MIX LEFT LINEOUT LEFT Gain/Attenuation: -42dB to +24dB MONO RIGHT RIGHT...
- Page 59 Audio Block Diagram for MLS 406 SA.eps MLS 06SA audio block diagram CTRL CTRL LEFT LEFT Configurable output levels -10dBV unbalanced CTRL LEFT +4dBV balanced LEFT LEFT CHN AUX/MIX LEFT LINEOUT LEFT Gain/Attenuation: -42dB to +24dB MONO RIGHT RIGHT RIGHT RIGHT CHN AUX/MIX RIGHT...
- Page 60 Reference Material, cont’d This page was deliberately left blank A-1 MLS 304 Series, MLS 406 Series • Reference Material...
- Page 61 FCC Class A Notice Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
- Page 62 Extron Electronics, USA Extron Electronics, Europe Extron Electronics, Asia Extron Electronics, Japan 1230 South Lewis Street Beeldschermweg 6C 135 Joo Seng Road, #04-01 Kyodo Building Anaheim, CA 92805 3821 AH Amersfoort PM Industrial Building 16 Ichibancho The Netherlands Singapore 368363 Chiyoda-ku, Tokyo 102-0082 Japan 714.491.1500 +31.33.453.4040...
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