Extron electronic MLS 306, MLS 506SA, MLS 506MA Pin RS-232 function Description Contact closure

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Do not connect RS-232 control devices to the MLC/IR 5-pole captive screw connector and to the 9-pin RS-232/Contact Closure port simultaneously. A conflict may occur.

Connect devices to both ports at the same time only if

•the 9-pin connector is used for contact closure and

•the MLC/IR port is used for RS-232.

9RS-232/Contact Closure port — This port can function as an RS-232 port or as a contact closure port. Do not connect RS-232 devices to both this and the MLC/IR port. See the above note.

Pin	RS-232 function	Description	Contact closure
1	–	Input 1	Input 1
2	Tx	Transmit data	–
3	Rx	Receive data	–
4	–	Input 2	Input 2
5	Gnd	Signal ground	–
6	–	Input 3	Input 3
7	–	Input 4	Input 4
8	–	Input 5	Input 5
9	–	Input 6	Input 6

5 1

96

DB9 Pin Locations

Female

•For a stand-alone MLS switcher, connect a cable from the host computer or a third party control system to this 9-pin D connector to set up and remotely control the switcher. Alternatively, connect a contact closure keypad to this connector for remote control of input selection.

•For an MLS switcher slaved to an MLC controller, connect a cable from the MLC’s MLS/Power port to the switcher’s MLC/IR connector (not to this 9-pinRS-232 port). Once the system has been cabled and set up via the Windows-based software, the MLC or a host computer communicating through the MLC can be used to remotely control the switcher. Refer to chapter four of the MLC 206 User’s Manual and the MediaLink Control Program help file for details on configuring an MLC- MLS system.

CAUTION

If the switcher is connected to an MLC 206 controller via the MLC/IR port, do not connect an RS-232 device to the MLS’s 9-pin RS-232/Contact Closure port. Conflicts between RS-232 signals received from both ports could cause system disruptions.

When an MLC 206 is connected to the MLC/IR port, a contact closure device may be attached to the 9-pin connector.

MediaLink Switchers • Installation

2-5

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Contents MLS 306, MLS 506, MLS 506MA, MLS 506SA MediaLink SwitchersSicherheitsanleitungen Deutsch PrecautionsSafety Instructions English Consignes de Sécurité FrançaisTable of Contents Table of Contents, cont’d One Introduction About the MediaLink SwitchersFeatures and Options Standard featuresTwo MLS 306 Rear Panel and Cabling Installation UL/Safety Requirements Mounting the SwitcherVideo output connections Power connectionInput connections Control connections Audio output connectionsPin RS-232 function Description Contact closure MLS 506 Rear Panel MLS 506, MLS 506MA, and MLS 506SA Rear Panels and CablingVideo input connections for MLC 506/506MA/506SA inputs RGB output connections for MLC 506/506MA/506SA Connecting a 4 ohm load to the mono amplified ouputOhm or Connecting an 8 ohm load to the mono amplified outputAudio processing connections MLS 506MA, MLS 506SA only MediaLink Switcher to an MLC Setting the -6dB Jumpers JMP1 and JMP2 -6dB Audio Jumpers MLS 506MA Rear Panel Top View MLS 506MA Front PanelExtron MLS Application DiagramsThree Operation Front Panel Features and Basic OperationMediaLink Switchers Operation Extron MLS Menu overview Menus, Configuration, and AdjustmentsMoving through menus by using front panel controls Effects submenu Menu details System resetExecutive mode Remote Control of the MLSOperation, cont’d Four Host-to-MLS communications Serial CommunicationRS-232 Programmer’s Guide Ascii to Hex conversion table Using the command/response tablesSymbol definitions Command Ascii Command Response Additional descriptionSerial Communication, cont’d Audio treble adjustment per inputAudio mute overall Audio bass adjustment per inputCommand Ascii Command Response Values Command/response table for special function SIS commandsControl Software for Windows Installing the softwareUsing the control program Special features User ModeSwitcher MLS Config Saving and restoring configurationsFile name Description Using the help programKey to file names AAppendix a Specifications Specifications, Part Numbers, and AccessoriesAudio Specifications, Part Numbers, and Accessories, cont’d Included parts Part Numbers and AccessoriesAccessories Miscellaneous accessories Part numberSpecifications, Part Numbers, and Accessories, cont’d AppendixBB Labeling Labeling Buttons on the SwitcherUsing the software to make labels MediaLink Switchers LabelingLabel Templates Labeling, cont’d FCC Class a Notice Extron’s Warranty Extron Electronics, USA

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