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User Guide DMP 44 LC Audio Products: Mixers and Processors Four -Line Input and Four -Line Output Digital Matrix Pr ocessor 68-1938-01 Rev . B 05 12.
This symbol is intended to alert the user of important operating and mainte- nance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product’ s enclosure that may present a risk of electric shock.
FCC Class A Notice 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. Operation is subject to the following two conditions: 1. This device may not cause harmful interference.
Conventions Used in this Guide In this user guide, the following are used: NOTE: A note draws attention to important information. TIP: A tip provides a suggestion to make working with the application easier . CAUTION: A caution indicates a potential hazard to equipment or data.
v DMP 44 LC • Contents Introduction .....................................................1 About This Guide ................................................ 1 About the DMP 44 LC Digital Matrix Processor .... 1 Features .............................
DMP 44 LC • Contents vi.
Intr oduction This section describes this guide and the DMP 44 LC, including: • About This Guide • About the DMP 44 LC Digital Matrix Processor • Features • DMP 44 LC Application Diagram About.
• Outputs — Four balanced or unbalanced line on 3.5 mm, 6-pole captive screw connectors. • 4x4 line level audio matrix mixer — The DMP 44 LC is a compact matrix processor with DSP . It featur es four line level inputs that can be processed, mixed, and routed to four line level outputs.
• 16 DSP Configurator presets — Using the DSP Configurator softwar e, parameters for DSP processing, signal levels, or audio r outing can be saved as presets. These settings can be saved for the entire system, or any selected gr oup of inputs, outputs, mixing points, and DSP blocks.
DMP 44 LC Application Diagram DMP 44LC Tx Rx 1 2 3 RS-232 DIGI IN 3 4 1 O U T P U T S 2 3 4 1 I N P U T S 2 POWER 12V 0.3A MAX RESET 100-240V 0.5A, 50-60Hz VOL/MUTE STANDBY CLASS 2 WIRING 1 2 LISTED 17TT AUDIO/VIDEO APPARATUS XPA 1002 C US LEVEL 1 1 2 1 2 LIMITER/ PROTECT SIGNAL 2 INPUTS OUTPUT REMOTE 0 0 10V 50 mA 1 3 2 4 5 6 7 8 0.
Installation This section describes the installation of the DMP 44 LC, including: • Mounting the DMP 44 LC • Rear Panel Features and Cabling Mounting the DMP 44 LC The 1U high, quarter rack width, 3.
SECTION A–A AA Po wer Suppl y Output Cord 2-P ole Captive Screw Connector Ridges Smooth Tie Wrap 3/16” (5 mm) Max. Figure 2. Power Supply Wiring WARNING: The two power cord wir es must be kept separate while the power supply is plugged in. Remove power before wiring.
b Power/Reset LED — The green LED indicator duplicates the fr ont panel LED operation (see the “ Reset Actuator and LED ” section for additional information). c Line 1-4 input connectors — 6-pole 3.5 mm double-stacked captive screw connectors accept balanced or unbalanced mono line level signals.
The digital input port is used to monitor TTL level digital signals. V oltages greater than 2 V indicate a logic “high” signal while voltages less than .8 V indicate a logic “low .” NOTE: These ports are configur ed via DSP Configurator (see the “ Digital input ports ” section for additional information).
Operation This section describes the operation of the DMP 44 LC, including: • DMP 44 LC Operation • Front Panel Operation • Rear Panel Operation • DSP Processing/Signal Flow • Processor Blocks • Mix Matrix • Line Output Channels DMP 44 LC Operation The DMP 44 LC does not have physical controls.
Fr ont Panel Operation DMP 44 LC DIGIT AL MA TRIX PROCESSOR CONFIG 1 2 Figure 6. DMP 44 LC Front Panel a Power/Reset LED — Green power indicator lights when the DMP 44 LC is operational. b Configuration connector — The USB 2.0 port uses a mini type-B connector to connect to a host computer for control.
Firmware Updates The firmware of the DMP 44 LC can be updated thr ough USB or RS-232 connection. The user can obtain new firmware fr om the Extron website.
Digital Input Ports The three-pin Digital Input port is used to monitor or drive TTL level digital signals. The port consists of three input pins with the fourth pin being used as a gr ound providing three inputs total.
3. Select the event or “trigger” to configure the input. 4. Select the action that results when the trigger occurs. 5. Select the group to act upon when the trigger event occurs.
DSP Pr ocessing and Signal Flow The diagram below shows the signal flow and DSP processing per signal chain. Signal chains and the matrix are described in the following sections.
Mix Matrix The line input process r outes incoming signals through a mix matrix to the line outputs. The mix matrix contains 16 mix-points, one for each input to each output bus with each mix-point containing a single fader with a range of -24 dB to +12 dB, plus a mute control.
Line Input Channels There ar e four (4) mono line input channels. Channel controls and processing blocks described in the following sections are identical for each of the four inputs. Line (Input) Gain Line inputs provide gain settings to accommodate consumer and pr o line level sources.
Filter Block Each line input channel filter block allows a total of five filters. The first filter is inserted from a pr ocessor list that appears when the block is double-clicked or via a context window/processor list when the block is right-clicked.
Figure 9. Filter Dialog Box, Filters Added Within the dialog box, a filter is focused when a filter type is inserted, or is focused by clicking the filter number to the left of the filter selection drop-down list. Note how filter 3 in the figure below is highlighted in yellow , indicating it is the filter in focus.
Parametric (Equalizer) Up to three parametric filters can be placed in the filter box at one time. Each may be set to a differ ent frequency creating a 3 band parametric equalizer .
The parametric filter allows frequency selection accurate to 0.1 Hz and either 6 or 12 dB of slope. Notice at the specified frequency (100 Hz) the signal is 3 dB down, typical operation for high pass filters. The 3 dB down point will remain constant r egardless of the slope setting.
Bass and T reble Shelving Bass and treble shelving may be added to the filter , as shown below . Adding this filter automatically inserts both bass and treble contr ols in the dialog box. If only a bass or only a treble filter is r equired, either bypass the unneeded control or set it to unused in the selection box.
2. Specify bass and treble filters if necessary . Configuring Groups 1. From the View menu, select Group Controls . 2. T o add a new group, select Add a Group .
3. Select a group to configur e. NOTE: T o configure Bass and T reble groups, see “ Configuring Bass and T reble Groups .” 4. Select a control type for the gr oup.
5. Define the group members. Configuring Bass and T reble Groups 1. From the main DSP Configurator scr een, select the Filters block, as shown below . DMP 44 LC • Operation 24.
2. From the dr op down menu select Bass & Treble Filters . 3. Double-clicking the Filters processor opens the configuration scr een. Configure the bass and treble parameters. NOTE: The Bypass button is red when the filter is bypassed or not active.
5. Select the Bass or T reble control gr oup. 6. Select the group members. 7. Repeat steps 5 and 6 for the unselected control gr oup (Bass or T reble) .
Dynamics Processor A dynamics processor alters the dynamic range, the dif ference between the loudest to the quietest portions of an audio signal. Each input channel offers one dynamics pr ocessor block that, when inserted, provides a compr essor .
Compression can also be used to pr otect a system or a signal chain from overload similar to a limiter . Threshold — The input signal level above which compr ession begins (subject to attack time) and below which compression stops (subject to hold and r elease time).
Limiter The limiter restricts the input signal level by compr essing its dynamic range above a specified threshold. The limiter is most commonly used to pr event clipping, protecting a system against component or speaker damage. While the limiter is closely related to the compressor , it applies a much higher compression ratio of ∞ :1.
Ducking is configured in a window which opens when an active ducking pr ocessor block is double-clicked (see the following diagram). Ducking can be globally set up from a single configuration window , which opens when any of the active ducking processor blocks are double-clicked.
Ducking Configuration Dialog a Current sour ce indicator Shows the selected input. Ducker settings affect the input channel shown her e. When a ducker dialog is opened for a channel, the current sour ce defaults to that channel. The current sour ce can also be selected via the priority readout/source selector (see the following figure).
f By (dB) Individual attenuation settings for each duck target in dB. The default is 20.0 dB. If additional attenuation of the targets is requir ed, increase this value.
Mix Matrix The DSP architectur e contains a mix matrix that connects the line inputs to the line outputs. The DSP Configurator GUI provides contr ol of the mix matrix, used to set mix levels from the post pr ocessing inputs, to each line output bus. Each of the four line inputs is connected to a mix-point for each of the four line outputs.
• OK/Cancel — Click OK to accept changes and close the window . Cancel ignores changes and closes the window . The title above the fader reflects the output channel name for the mix-point. Mix-point GUI behavior: No mix information — A solid gray ball indicates thst the mix-point is muted (contains no mix information).
Double-click — Double-click to open the mix-point dialog box. The focus circle turns light green in color to indicate the open dialog box, as show in the following figur e. If the mix-point is muted, the mix-point ball will be gray . If unmuted, the ball will be teal.
In order to understand how the mix-points work, the following figur es provide examples of mixes. In the first example figure below , input audio from mic input 1 is pr ocessed and arrives at the mix-point. Double-clicking on the mix-point opens the dialog box.
In the example figure below , inputs 1 to 4 have been routed to outputs 1 thr ough 4 by unmuting the mix-point for mic/line input 1 on each output (1 through 4) bus. Again, the mix-points are teal to indicate the r outing. Figure 21. All Inputs to All Outputs Line Output Channels There ar e four mono line output channels.
Dynamics The output channel dynamics block provides a limiter function (see the diagram below) that restricts the input signal level by compr essing its dynamic range above a specified threshold. The limiter is most commonly used to pr event clipping, protecting a system against component or speaker damage.
SIS Pr ogramming and Contr ol This section describes SIS programming and contr ol of the DMP 44 LC, including: • Connection Options • Command/Response T able for Basic SIS Commands • Special Cha.
USB Port (front panel) The DMP 44 LC has a front panel USB port that can be connected to a host device such as a computer running the HyperT erminal utility , DSP Configurator , or the DataViewer utility . The port makes serial control of the DMP possible.
Error Responses When the DMP 44 LC is unable to execute the command, it returns an error r esponse to the host. The error r esponse codes and their descriptions are as follows: Code Description E10 In.
X% = Internal temperature Degrees Celsius X^ = Dirty status 0 = RAM has been saved to Flash (OK to power off/r eset) 1 = RAM needs to be saved to Flash X& = Unit name A text string of up to 24 characters drawn from the alphabet (A–Z) digits (0–9), minus sign/hyphen (-).
Command ASCII Command (Host to T uner) Response (T uner to Host) Additional Description Setup Commands Set verbose mode E X# CV } Vrb X# ] Set verbose/response mode.
Command ASCII Command (Host to T uner) Response (T uner to Host) Additional Description Partial preset commands Recall preset X1) . Rpr X1) ] Recall preset.
Digital Input Commands Command ASCII Command (Host to T uner) Response (T uner to Host) Additional Description Configure digital input E X! * X@ * X# * X$ GPIT } GPIT X! * X@ * X# * X$ ] See table be.
Command/Response T ables for DSP SIS Commands Many digital signal processor (DSP) functions (gain, mute, and gr oup masters) can be controlled using SIS commands. These commands follow the same general rules as basic SIS commands, but the variables ( X/ ) tend to be more complex.
Command/Response T ables for Audio SIS Commands DSP control commands ar e an extension to SIS commands. They differ only in their data string and the requir ement to send each command with an “Au” suffix.
Special Characters The HTML language reserves certain characters for specific functions. The device will not accept these characters as part of preset names, the device name, passwor ds, or locally created file names.
Command ASCII Command (Host to T uner) Response (T uner to Host) Additional Description Audio group master commands NOTE: • See Gr oup Masters , for more information about audio group masters. • A group must have assigned members for these commands to have an ef fect.
T able 1. Level Control and Mix-point Selection T ables a Input Gain Control X6) b Pre-mixer Gain X6) Input 1 30000 Input 1 30100 Input 2 30001 Input 2 30101 Input 3 30002 Input 3 30102 Input 4 30003 .
Softwar e Contr ol This section describes the control softwar e for the DMP 44 LC, including: • Software Contr ol • DSP Configurator Program Softwar e Contr ol The DMP 44 LC can be controlled using the DSP Configurator softwar e, SIS commands through HyperT erminal or DataViewer .
Figure 24. DVD Software Menu 3. Scroll to the DSP Configurator pr ogram and click the Install text to its right, as shown in the red boxes below . Figure 25.
Install the USB Driver T o install the USB driver , follow these instructions. Figure 26. USB Installer Splash Scr een 1. After the DSP Configurator program installation is complete, click Next to pr oceed.
2. The USB driver installer launches. When the installer has completed the installation of the USB drivers, the following screen appears: Figure 28. Successful USB Driver Installation 3. Click Finish . USB driver installation is complete. DSP Configurator Pr ogram Starting the Program 1.
2. Select the device to be configured and then click OK . 3. The program displays the following scr een. Using the Program In Emulate mode, audio parameters may be selected, then transferred to the DMP 44 LC by going to Live mode (while connected to a DMP 44 LC).
Emulate Mode vs. Live Mode The DSP Configurator program has two operational modes, Live and Emulate . In Live mode, the program has established a connection and is synced with the DMP 44 LC. Changes affect the device in r eal-time and changes in the current state of the device are r eflected in DSP Configurator .
Selecting Live Mode and Pushing or Pulling a Configuration T o switch from emulate mode to live mode: 4. Click the Live button, see a on the main DSP Configurator screen. The Connect to device... dialog box opens. - or - DMP 44LC 1 4a 4b 3a 3b 3c 2a 2b Figure 30.
8. Click either the: a. Pull radio button to overwrite the open file with the current device configuration, thenproceed to step 6 . -or - b. Push radio button to overwrite the open file, then proceed to step 6 .
9. Click OK . The DSP Configurator program is connected live to the device and the configuration and presets ar e pushed or pulled as selected. • If Pull is selected, the program overwrites the currently open file with the configuration from the device.
Saved presets can be r ecalled via the DSP Configurator , or a control system sending an SIS preset r ecall command. Presets may also be saved and recalled via the embedded web page. Presets saved via the web page contain input gain, output volume, and the primary mix-point settings.
Building a Preset Only elements that are highlighted (given focus) will be saved as a pr eset. <Ctrl + A> highlights all elements within DSP Configurator . T o build a preset, highlight the desired DSP Configurator elements (gain/pr ocessor blocks, mix-points) using standard Windows keyboard and mouse actions as follows: 1.
3. Select a preset number . In the Preset Name field, unused presets ar e named “unassigned.” T o create a new preset, select an unused pr eset number and type a preset name. If no name is enter ed, a default name will be assigned. T o overwrite an existing preset, select a pr eset with a name other than “unassigned.
When a preset is being pr eviewed, in either Live or Emulate mode, the Delete button is available. In Live mode, the preset is deleted fr om the hardware, which is r eflected in software (it is r emoved from the preset list). After disconnecting fr om the device and before exiting the pr ogram, the file must then be saved to retain this change.
Push Configuration - Advanced, Push Presets, All There ar e a number of advanced options available when pushing a configuration that enable the user to tailor the input, signal processing, signal mix, or output to a specific preset operation.
3. There ar e three options now available; Push Configuration , Push Presets or both. In this example, Push Configuration is not selected and all presets will be pushed. a. Select Push Presets only . This enables two additional options, All and Selected .
Push Configuration - Advanced, Push Presets, Selected The next example shows how to customize a push to include only selected presets. Connect the DMP 44 LC as described by steps 1 to 4 in the previous pr ocedure for switching from Emulate mode to Live mode (see “ T o switch from emulate mode to live mode: ”), then: 1.
Refer ence Information This section contains refer ence information for the DMP 44 LC, including: • Specifications • Part Numbers and Accessories • Mounting • Firmware Loader • DMP 44 LC Hardwar e Reset Modes Specifications Audio Gain ......
Control/r emote — audio processor Serial host control port ................... 1 bidirectional RS-232: 3.5 mm captive scr ew connector , 6 pole (uses 3 poles) (shared with digital input) Baud rate and protocol .
Part Numbers and Accessories Included Parts These items are included in each DMP 44 LC or der: Included parts Replacement part number DMP 44 LC Digital Matrix Processor 60-1095-01 3.
UL Rack Mounting Guidelines The following Underwriters Laboratories (UL) guidelines pertain to the safe installation of the DMP 44 LC in a rack. 1. Elevated operating ambient temperature — If installed in a closed or multi-unit rack assembly , the operating ambient temperature of the rack environment may be greater than r oom ambient temperature.
3. Install blank panels or other units on the rack shelf. Furniture Mounting Furniture mount the DMP 44 LC using the optional mounting kit (Extron MBU 123, part number 70-212-01 , as follows: 1. Attach the selected mounting brackets with the machine screws pr ovided.
Firmwar e Loader The DSP Configurator program includes a firmwar e loader program which allows replacing the firmware without taking the DMP 44 LC out of service. Download the desir ed firmware file fr om the Extron website, (see the Firmware Upgrade Page on the website for instructions).
The Firmware Loader scr een appears. 3. From the toolbar , select File > Open . 4. Locate the downloaded firmware file and click on it. 5. Click Begin on the main screen. The total pr ogress bar tracks the loading progr ess. 6. When the upload is finished, exit the program by selecting File > Exit .
DMP 44 LC Har dwar e Reset Modes DMP 44 LC Reset Mode Summary Mode Mode Activation Result Purpose/Notes Use Factory Firmware 1 Hold the reset button while applying power . NOTE: After a mode 1 reset, update the DMP 44 LC firmware to the latest version.
Extr on W arranty Extron Electr onics warrants this product against defects in materials and workmanship for a period of three years from the date of pur chase.
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