Extron-electronics MLA VC10 Plus User Guide User Manual

68-1828-01 Rev. C06 12MLA VC10 PlusUser GuideAudioVolume Control Module

Rear Panel ConnectionsRS-232RELAYV-DCRTx Rx GG GVCNO NCCPOWER0.3A MAX12VCONTROLOUTPUTREMOTEfg jihFigure 3. MLA VC10 Plus Rear Panelf Power — Connec

Installation and CablingThis section describes z Installation Overview z Connections for Volume Control z Connections to a Power Supply z RS-232 Conn

6. Connect a power supply (see page 11). ATTENTION: Read the attention points on page 11 before connecting the power supply.If the MLA VC10 Plus is

3. Connect the ground pin (G) from the MLA VC10 Plus to the ground terminal ( on the MPA; G on the XPA).4. Connect the signal (wiper) pin (C) from

Volume Control by Variable DC VoltageWhen volume is being controlled by variable voltage, serial SIS commands sent from the controller to the MLA VC10

Measuring the Biamp Precedence CMA 60 control voltageSeveral Biamp ampliers have three screw terminals labeled “remote level.” The terminals, shown i

3. Ensure you know the maximum control voltage for your amplier. In this example, the maximum voltage output range for the amplier is 10 VDC.For mo

Connections to a Power SupplyNOTE: During configuration, the host PC provides power through the USB cable. This is sufficient to power the unit durin

Sharing a Power Supply with an Extron ControllerThe MLA VC10 Plus can share a power supply with any Extron MLC or IP Link control processor.NOTES: •

RS-232 ConnectionsConnections to an Extron Control ProcessorControl processors issue SIS commands to the MLA VC10 Plus. For a list of SIS commands, se

This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipmen

Connecting the MLA VC10 Plus to an IP Link control processorFigure 8 also shows how to connect the MLA VC10 Plus to COM port 1 of the IPL T SFI244. Co

RelayMute ControlNOTE: By default, the Auto Mute feature of the MLA VC10 Plus automatically triggers the relay when the volume level reaches 0%. If y

Software ControlSoftware is not normally required to operate the MLA VC10 Plus. However, to congure the unit or update the firmware, this section prov

Activating the USB Port for the First TimeNOTE: When DataViewer is installed on your computer, the Extron USB Driver is installed at the same time. T

Conguring the Extron ControllerExtron controllers may need be congured to work with the MLA VC10 Plus. The appropriate software ships with the contr

5. If the version available for download is more recent than the version on your volume control module, click Download and follow the on-screen instr

OperationThis section of the guide describes z Operation z TroubleshootingOperationThe Extron MLA VC10 Plus Volume Control Module converts RS-232 comm

Maximum voltage range limitSome ampliers use a maximum voltage that is lower than 10 VDC. Using a voltage that exceeds the requirements of the ampli

Linear or Logarithmic Taper ModeThe MLA VC10 Plus is set to linear taper by default. Each increment or decrement will change the voltage or resistance

The MLA VC10 Plus does not respond to SIS commands z Check the Power and Activity LED (a in figure 2) — it flashes green when SIS commands are received.

FCC Class A NoticeThis equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rule

z The ground line may be noisy. Use a different, “clean” grounding source. The chassis of the MediaLink controller (if used), the power supply, the M

Specications Control/remote — MLA volume controllerSerial control port ... 1 RS-232, 3.5 mm captive screw connector, 3 pole

Product weight ... 0.2 lbs (0.1 kg)Shipping weight ... 1 lb (0.5 kg)Vibration ...

Parts and AccessoriesIncluded PartsDescription Part NumberMLA VC10 Plus 60-1090-01(1) 2-pole, orange, 3.5 mm captive screw connector(1) 2-pole, blue,

Reference MaterialControl Resistance and Voltage for Common AmplifiersThe table below shows the control resistance and control voltage requirements fo

Manufacturer Model Control Resistance Control Voltage WiringCrown 180A 5 kilohm 10 VDC B280A 5 kilohm 10 VDC B1160A 5 kilohm 10 VDC B66A 5 kilohm 10 V

Manufacturer Model Control Resistance Control Voltage WiringSymetrix 322 DSP Engine 10 or 50 kilohm 10 VDC B371 SPL Computer 10 or 100 kilohm 10 VDC B

SIS CommandsThis section provides information about the Extron Simple Instruction Set (SIS) commands that are used to congure the MLA VC10 Plus: z In

Symbols Used in this GuideWhen programming in the eld, certain characters are most conveniently represented by their hexadecimal rather than their AS

to uniquely identify the unit within the system. For example, it could be the room number. The default name is MLA-VC10-PLUS.NOTES: • Only letters (A

Conventions Used in this GuideNoticationsATTENTION: Attention indicates a situation that may damage or destroy the product or associated equipment.

Command ASCII Command(host to unit)Response(unit to host)Additional DescriptionAudio MuteMute on1ZAmt1]Mute audio output volume to 0; toggle relay on

Command ASCII Command(host to unit)Response(unit to host)Additional DescriptionVoltage and Potentiometer AdjustmentSet the maximum voltage output leve

Command ASCII Command(host to unit)Response(unit to host)Additional DescriptionResetReset configurable settings to factory defaultsEZXXX} Zpx] VolX!]R

MountingThis section outlines the various mounting options available for the MLA VC10 Plus: z Tabletop Placement z Rack Mounting z Under-desk Mounting

Rack Mounting ProcedureThe unit can be mounted on any of these optional Extron rack systems: z RSF 123 — 3.5 inch deep, 1U universal rack shelf kit (p

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ContentsIntroduction... 1MLA VC10 Plus Description... 1MLA VC10

MLA VC10 Plus • Contents vi

IntroductionThis user guide contains information about the Extron MLA VC10 Plus volume control module with instructions for experienced installers on

Inverse mode — In normal mode, 0 is mute and 10 VDC or 10 kilohm is the maximum volume. In inverse mode, this reverses the output to 0 (maximum volume

Panels and ConnectionsThis section describes the features and connectors for the MLA VC10 Plus: z Front Panel Connections and Features z Rear Panel Co