Extron electronic MLS 304SA Installation, UL/Safety Requirements, Important Safety Instructions

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PRELIMINARY

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

1.	Read these instructions.
2.	Keep these instructions.
3.	Heed all warnings.
4.	Follow all instructions.
5.	Do not use this apparatus near water.
6.	Clean only with a dry cloth.
7.	Do not block any ventilation openings. Install in accordance with the
	manufacturer’s instructions.
8.	Do not install near any heat sources such as radiators, heat registers, stoves,
	or other apparatus (including amplifiers) that produce heat.
9.	Do not defeat the safety purpose of the polarized or grounding type plug. A
	polarized plug has two blades with one wider than the other. A grounding
	type plug has two blades and a third grounding prong. The wide blade or the
	third prong are provided for your safety. If the provided plug does not fit into
	your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at
	plugs, convenience receptacles, and the point where they exit from the
	apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14.Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

2- MLS 304 Series, MLS 406 Series • Installation

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Contents MediaLink Switchers MLS 304MA, MLS 304SA, MLS 406, MLS 406MA, MLS 406SAConsignes de Sécurité Français PrecautionsSafety Instructions English Sicherheitsanleitungen DeutschInstallation Quick Start MLS 304MA, MLS 406, MLS 406MAVideo Configuration Table of Contents Table of Contents, cont’d One About this Manual FeaturesIntroduction About the MLS 304 Series and the MLS 406 SeriesTwo Important Safety Instructions InstallationUL/Safety Requirements MLS 304 Series, MLS 406 Series InstallationTabletop use Mounting the SwitcherRack mounting MLS 304 Series, MLS 406 Series Installation Power, input, and control connectionsPower connection Rear Panels and CablingInput Type Signal BNC Color Balanced Mono InputInstallation, cont’d MLS 304 Series, MLS 406 Series InstallationIR Link IR signal repeater Control connectionThat has an external power supply Video outputs Video output, local monitor, and audio output connectionsAudio outputs Unbalanced Mono Output Balanced Mono Output Wiring for 4 ohm or 8 ohm speakers MA models Ohm Total LoadSpeakers Tapped at 7.5 Watts Each Equals 15 Watts Total Wiring for 4 ohm or 8 ohm speakers SA models Stereo OutputSpeaker arrangement examples Examples of speaker layoutsMLC Application DiagramsExtron MLC ProjectorThree MLS 304 Series, MLS 406 Series Operation and Setup Operation and SetupFront Panel Features and Operation Minimum threshold at least 21%MLS 304 Series, MLS 406 Series Operation and Setup Front panel security lockout executive modesResetting the switcher Setting Up and Optimizing the AudioMLS 304 Series, MLS 406 Series Operation and Setup Configuring Lineout and Preamp output levels Adjusting audio input levelsClipping level Making adjustmentsSignal detection threshold Normal rangeDA distribution amplifier mode mode Video Signal RoutingStandard mode mode RGB follow mode modeMode Selected input Input special conditions Monitor Output Remote ControlMode If the switcher does not respond to controls TroubleshootingIf the image does not appear or there is no sound Preliminary Four RS-232 Programmer’s Guide Serial CommunicationHost-to-MLS communications Symbol definitions Using the command/response tablesMLS 304 Series, MLS 406Series Serial Communication Command/response table for SIS commands Command Ascii Command Response Additional descriptionAudio status for the active input Aux/Mix inputFirmware version, part number & information requests Command/response table for special function SIS commands Command Ascii Command Response ? valuesUsing the control program Installing the softwareControl Software for Windows User Mode Screen Special featuresSwitcher MLS Config Screen Preliminary File menu options Saving and restoring configurationsUpdating firmware Follow the on-screen instructions Key to file names Using the help programFile name Description AAppendix a Video SpecificationsReference Material Video input and loop-throughAudio SyncMLS 304 Series, MLS 406 Series Reference Material A- Audio output Lineout and Preamp Audio output mono power amp MLS 304MA, MLS 406MA onlyAudio input Included partsControl/remote switcher Audio output stereo power amp MLS 304SA, MLS 406SA onlyGeneral Included parts Replacement Part number Part Numbers and AccessoriesOptional accessories Accessory Part numberFrequency Response Graph for the Loudness Feature Audio Reference LevelsAudio Block Diagrams MLS 304MA audio block diagramMLS 304SA audio block diagram Utinpse LE CTMLS 406, MLS 406MA audio block diagram InputsMLS 406SA audio block diagram MLS 304 Series, MLS 406 Series Reference Material A-11This page was deliberately left blank FCC Class a Notice Extron’s Warranty Extron Electronics, USA

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