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Lectrosonics DM84 Reference Manual

Digital audio processor
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DM84
Digital Audio Processor
Fill in for your records:
Serial Number:
Purchase Date:
REFERENCE MANUAL
Rio Rancho, NM, USA
www.lectrosonics.com

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  • Page 1 REFERENCE MANUAL DM84 Digital Audio Processor Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.com...

  • Page 3: Important Safety Instructions

    Important Safety Instructions This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure -- voltage that may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature.
  • Page 4 DM84 Digital Matrix Processor 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 5: Table Of Contents

    Important Safety Instructions ................................3 Table of Contents ....................................5 General Overview ....................................8 Digital Matrix and DANI Bus ................................9 DM84 Functional Block Diagram ................................ 10 Input Processing ....................................11 Input Gain ....................................... 11 Delay ....................................... 11 Filters ......................................11 ADFE Filters ....................................
  • Page 6 DM84 Digital Matrix Processor DM84 Serial Interface and General Commands ..........................44 Wildcards ......................................44 DM84 General Commands ................................. 44 actpre (active preset) ..................................44 baud (baud rate) ..................................... 44 default (default settings) .................................. 44 defpre (default preset) ..................................45 desc (description) ...................................
  • Page 7 (programmable output channel activity qualification time) ....................60 prgindef (programmable input definition) ............................60 prgoutdef (programmable output definition) ............................ 62 DM84 Rear Panel Control Commands ..............................63 rpingn (rear panel audio input gain) ..............................63 rpingnmin (rear panel audio input gain minimum) .......................... 63 rpingnpre (rear panel audio input gain preset) ..........................

  • Page 8: General Overview

    High clock rate DSP microchips and the latest micro- stacked in a master/slave configuration to expand the processors are at the core of the DM84. The design is number of inputs to hundreds of channels. focused on meeting the requirements of modern...

  • Page 9: Digital Matrix And Dani Tm Bus

    Reference Manual Digital Matrix and DANI The core of the DM Series processors consists of a The digital matrix is common to all processors in the digital matrix and a digital bus called DANI (digital audio stack, with automatic mixing taking place at the network interface).

  • Page 10: Dm84 Functional Block Diagram

    DM84 Digital Matrix Processor DM84 Functional Block Diagram Prog I/O Conn LecNet 2 Conn Front & Rear DB25 1/8 '' Jack USB B Conn Prog I/O RS-232 Port Port Port Input Gain Control Pots Off: No signal 8 input 4 output...

  • Page 11: Input Processing

    (Details on the signal processing stages are available in the Help available with the LecNet2™ software.) There A sophisticated compressor stage is provided following are 8 Input Processing Blocks in the DM84. the other stages to control the dynamic characteristics of the input. The compressor provides control over...

  • Page 12: Power Of The Mix

    DM84 Digital Matrix Processor Power of the Mix Output Processing The Power of the Mix is the reference used to deter- Each output can receive signals from either the matrix, the mine the gain to be applied to each individual output pink noise generator, the tone generator, or, if it is operat- channel.

  • Page 13: Output Signal Processing Stages

    Reference Manual Output Signal Processing Stages Compressor and Limiter Each output channel provides a delay, nine filters, plus A versatile compressor and limiter are provided at each a compressor and limiter to idealize the channel for its output to control the average level and dynamics of the function in the sound system.

  • Page 14: Dm84 Controls And Features

    The gain of input and output audio channels is adjust- GREEN audio present (level greater than -35 dBu) able from the front panel of the DM84. This feature is ORANGE output compressor is active useful for system setup and adjustment, and may be left RED output is in limiting enabled to allow users to “touch up”...

  • Page 15: Rear Panel

    Reference Manual Rear Panel DM84 - 8 inputs, 4 outputs LecNet 2 POWER Plug RS232 Port DANI Programmable Input and Audio Inputs and Outputs Output Ports USB Port POWER Plug Programmable Input and Output Ports Standard NEMA 5-15 three-pin power plug capable of Programmable inputs or outputs used to enable control accepting 100-240 VAC, 47-63 Hz.

  • Page 16: Installing Lecnet2™ Software And Usb Driver

    Windows ® 2000 and XP driver library. As a result, connecting a computer system to a DM84 for the first time is different than subsequent installations. There are a few minor differences between installing the LecNet2USB drivers on a Windows 2000 versus a Windows XP system.

  • Page 17: Installating Additional Dm Units (Or Lecnet2Devices)

    Reference Manual 4. Windows will search the CD for the driver and when it has found it, a dialog will likely open warning you that the driver has not passed Windows Logo Testing. This is OK, click Continue Anyway. 1. On the first page of the Wizard, select "Install the software automatically (Recommended)"...

  • Page 18: Usb Driver Installation (Windows 2000)

    Hardware Wizard automatically opens. Use the follow- ing procedure to install the LecNet2 USB driver using the Wizard. 1. Connect a cable between the DM84's USB port and the computer system (or one of the units in a multiple unit installation). Place the LecNet2 Installation Disk in the computer system’s CD-ROM...

  • Page 19: Firmware Updates

    Connect the DM84 to a computer system with be listed. Click the DM84 unit to be updated. If a USB cable. Apply power to the DM84 and start the nothing appears on the list, or the unit to be up- control panel software on the computer system.
  • Page 20 DM DSP firmware, followed by an update of the the filename field to locate the update file. If the controller firmware. The progress bar indicates the browse button is clicked, the Select DM84 update status of each update stage. file dialog opens. If the file name was entered manually, click Next.
  • Page 21 Click Finish to close the Wizard. At this point you notification message appears when the update is can connect to the newly updated DM84 with the finished. Follow the instructions in the message to control panel. The updated firmware version verify that the DM84 restarts with the updated number should appear in the status bar.

  • Page 22: Dm84 System Setup Tabs

    The tab is divided into two functional sections: Input The Activity Tab provides an “at a glance” monitoring of Channel Activity/Gain and Output Channel Activity/ input and output levels, when the DM84 is connected to Gain. a computer system. Input Channel...

  • Page 23: Inputs Tab

    The Inputs Tab is used to set up and control the inputs to a preset in nonvolatile memory. to the DM84. If connected to a DM84, changes made in this tab take effect immediately. As always, the changes Phantom Power...

  • Page 24: In Filters (Input Filters) Tab

    As always, the changes are filter settings, with a separate page for each input not permanent unless the DM84 settings are stored to a channel. If connected to a DM84, changes made in this preset in nonvolatile memory.

  • Page 25: In Comp (Input Compressor) Tab

    As always, the changes are not settings, with a separate page for each input channel. If permanent unless the DM84 settings are stored to a connected to a DM84, changes made in this tab take preset in nonvolatile memory. Status...
  • Page 26 DM84 Digital Matrix Processor Name Description Amplitude response graph Each input channel page contains a graph which displays three plots: • A fixed plot for the 1:1 amplitude response used for reference (dashed grey line) • The amplitude response of the compressor (orange line) •...

  • Page 27: In Delay (Input Delay) Tab

    This tab contains controls to set the delay for each input As always, the changes are not permanent unless the channel. If connected to a DM84, changes made in this DM84 settings are stored to a preset in nonvolatile tab take effect immediately.

  • Page 28: Matrix Tab

    As always, the changes pages, one for the main matrix and one for the expan- are not permanent unless the DM84 settings are stored sion matrix. If connected to a DM84, changes made in to a preset in nonvolatile memory. Matrix...
  • Page 29 Output Source assignment controls These are buttons, one for each DM84 output, which indicate which mix bus is serving as the matrix signal source for that particular output channel. The button for each output will appear underneath the column representing the matrix mix bus assigned as a signal source for that output channel .
  • Page 30 DM84 Digital Matrix Processor Out Source (Output Source) Tab The DM84 is designed to be an integral component of a The Out Source tab selects the output channel signal DM Series chain, so each of the audio output channels source. This source will be added to the selected DM84 can be thought of as a processing pipeline whose input output.

  • Page 31: Out Source (Output Source) Tab

    This tab contains controls to set the delay for each As always, the changes are not permanent unless the output channel. If connected to a DM84, changes made DM84 settings are stored to a preset in nonvolatile in this tab take effect immediately.

  • Page 32: Out Delay (Output Delay) Tab

    DM84 settings channel. Six different filter types are available for each of are stored to a preset in nonvolatile memory. the nine output filters. If connected to a DM84, changes Filter Set Frequency Notebook...

  • Page 33: Out Filters (Output Filters) Tab

    Reference Manual Name Description Frequency response graph Each output channel page contains a graph which displays two plots: • The frequency response of the currently selected output filter (red line) • The total frequency response for the output channel (blue line) The plot for the currently selected filter contains handles which can be used as an alternative way to change the center frequency, boost/cut, or bandwidth of the filters with the mouse.

  • Page 34: Out Comp/Lim (Output Compressor/Limiter) Tab

    The compressor and limiter implementations If the computer is connected to a DM84, changes made are based on an RMS level detector controlled by a in this tab take effect immediately. As always, the single time constant parameter.
  • Page 35 Reference Manual Name Description Limiter setup Limiter parameters are set by the following numerical controls: • Threshold - The limiter input level threshold is displayed here and can be adjusted from -80dBu to +20dBu. • Time Constant - The limiter time constant is displayed here and can be adjusted from 0.1 to 500.0 ms.

  • Page 36: Outputs Tab

    As always, the changes are not permanent unless the This tab is used to set the output levels for the channel DM84 settings are stored to a preset in nonvolatile outputs from the DM84. If connected to a DM84, memory.
  • Page 37 Reference Manual Name Description Output channel label Output channels may be assigned a custom label to make it easier to understand a setup. For example, labels like Zone 3 or Cry room might usefully replace the default labels Ch 1, Ch 2, etc. To do this, right click on the channel group desired and choose Output Label...
  • Page 38 A typical application of rear panel gain is to allow adjustment of the level of an The DM84 also has a set of 8 programmable outputs audio output (driving a speaker) downward from some which can be set up to monitor programmable input maximum by means of turning a potentiometer con- status or whether particular presets are active.

  • Page 39: Rear Panel Control Tab

    DM84 that the function applies to. These choices will vary according to the nature of the programmable input function values. The following function types are available: •...
  • Page 40 These display the status of the corresponding programmable input when a function has been assigned and the control panel is connected to a DM84. For the Analog Gain Control functions, the indicator is lit red when the voltage applied to the input is in the upper half of the allowable 0 to 5VDC range.
  • Page 41 To set up one of the programmable outputs, select a function type from the Function list. Once selected, controls appear which are used to choose the specific feature or features of the DM84 that the function applies to. These choices will vary according to the nature of the program- mable output function values.
  • Page 42 DM84 Digital Matrix Processor Name Description • Run a Macro on Close/Open - Active when there is a contact closure on programmable input. • Momentary Unmute Inputs (PTT) - Active when the audio inputs controlled by the program- mable input are unmuted.
  • Page 43 Reference Manual Rio Rancho, NM...

  • Page 44: Dm84 Serial Interface And General Commands

    DM84 Digital Matrix Processor DM84 Serial Interface and General Commands Serial commands are delivered to the DM84 via the Examples: USB or RS-232 interfaces to allow remote control of the REQUEST RESPONSE device. The command language is simple and intuitive COMMAND !store(3)<CR>...

  • Page 45: Defpre (Default Preset)

    This command may be used as a query to determine if Now it can be passed as a string argument to the the DM84 Front Panel gain controls are locked (dis- desc command: desc="The \"Hula\" Room". Since abled) or unlocked (enabled). It may also be used as an...

  • Page 46: Fpmten (Front Panel Mute Enable)

    This command may be used as a query to determine This command may be used as a query to read the the status of the front panel mute feature of the DM84. device id string. This is the "name" of the device used It may also be used as an update to set enable or by the Lecnet2 protocol and is always "DM84".

  • Page 47: Macroti (Macro Title)

    This command may be used as a query to determine if premsk (default preset mask) the DM84 is operating as a Master or as a Slave. It may This command may be used as a query to determine also be used as an update to set the mode. Updates do the default preset mask in effect.

  • Page 48: Rank (Rank In Lecnet2 Chain)

    (run a macro) This command may be used to run a macro (an inter- nally stored group of DM84 commands). A single macro may be run by using the command form. In this case the macro is specified by using the address syntax.

  • Page 49: Dm84 Audio Input Commands

    Audio input channel label output channel address may not be wildcarded. This form was inlv Audio input level (dBu RMS) introduced with DM84 firmware version 1.2.0 and will will not work inmt Audio input mute status correctly on earlier versions...

  • Page 50: Dm84 Adfe Commands

    DM84 Digital Matrix Processor DM84 ADFE Commands UPDATE adfeen(7)=0<CR> OK<CRLF> adfefil (adfe filter deployment) Command Description This command may be used as a query to read the adfe filter deployment status, or as an update to deploy adfeen Automatic digital feedback an adfe filter.

  • Page 51: Dm84 Input Compressor Commands

    Reference Manual DM84 Input Compressor Commands incpmug (input compressor makeup gain) Command Description This command may be used as a query to read the incpgn Input compressor gain makeup gain, or as an update to set the makeup gain. incpmug...

  • Page 52: Dm84 Matrix Crosspoint Commands

    DM84 Digital Matrix Processor DM84 Matrix Crosspoint Commands unchanged by the command. Command Description Examples: xpgn Matrix crosspoint gain xpgnst Matrix crosspoint gain step REQUEST RESPONSE xpmode Matrix crosspoint mix mode QUERY xpgn(1,7)?<CR> OK -3<CRLF> xpmt Matrix crosspoint mute status QUERY xpgn(*,1)?<CR>...

  • Page 53: Xpmode (Crosspoint Mix Mode)

    Reference Manual xpmode (crosspoint mix mode) xpmt (crosspoint mute) This command may be used as a query to read the This command may be used as a query to read the matrix crosspoint mix mode, or as an update to set the matrix crosspoint mute status, or as an update to set mode.

  • Page 54: Dm84 Audio Output Commands

    RESPONSE output channel Front Panel gain, which is controlled by COMMAND !store(3)<CR> OK store(3)<CRLF> the knobs on the DM84 front panel. The output channel COMMAND !run={1,3,5}<CR> OK run={1,3,5}<CRLF> is specified by using the address syntax. Addresses must be in the range 1 to 4. The data type is integer, in QUERY !outgn(3)?<CR>...

  • Page 55: Outlb (Output Channel Label)

    Reference Manual outlb (output channel label) outmt (output mute) This command may be used as a query to read the This command may be used as a query to read the output channel text label, or as an update to set the output channel mute status, or as an update to set the label.

  • Page 56: Outsrc (Output Signal Source)

    DM84 Digital Matrix Processor outsrc (output signal source) This command may be used as a query to read the output signal source status, or as an update to set the status. The output channel is specified by using the address syntax. Addresses must be in the range 1 to 4.

  • Page 57: Dm84 Output Compressor Commands

    Reference Manual DM84 Output Compressor Commands ratio settings of the compressor, and may be less than Command Description the absolute maximum of 30 dB. If the value sent in an outcpgn Output compressor gain update request exceeds this upper limit, it will be forced...

  • Page 58: Dm84 Output Limiter Commands

    DM84 Digital Matrix Processor DM84 Output Limiter Commands outlmtc (output limiter time constant) Command Description This command may be used as a query to read the time outlmgn Output limiter gain constant, or as an update to set the time constant. The...

  • Page 59: Dm84 Programmable I/O Commands

    Reference Manual DM84 Programmable I/O Commands an array of integer of size 11. Command Description Examples: prgin Programmable input state prgindef Programmable input definition REQUEST RESPONSE prginundef Programmable input un-definition COMMAND prgin(11)<CR> OK<CRLF> prgout Programmable output state QUERY prgin(9)?<CR> OK 1<CRLF>...

  • Page 60: Prgindef (Programmable Input Definition)

    DM84 Digital Matrix Processor prgoutiv (programmable output invert) prgindef (programmable input definition) This command may be used as a query to read the This command may be used as a query to read a programmable output invert status, or as an update to programmable input definition, or as an update to set the status.
  • Page 61 Reference Manual Run macro on close Functions and Target values A single integer value in the range 1 to 128. This Analog input gain control identifies which macro is to be run by the function when A sequence of zero or more integers in the range 1 to 8. the programmable input is asserted.

  • Page 62: Prgoutdef (Programmable Output Definition)

    Examples: prgoutdef (programmable output definition) This command may be used as a query to read a REQUEST RESPONSE programmable output definition, or as an update to QUERY prgoutdef(8)? modify the definition. The programmable output is <CR> OK {3,1,3,4}<CRLF> specified by using the address syntax. Addresses must (Function "Monitor active preset"...

  • Page 63: Dm84 Rear Panel Control Commands

    DM84 Rear Panel Control Commands rpingn (rear panel audio input gain) Command Description This command may be used as a query to read the rear rpingn Rear panel audio input gain panel input gain, or as an update to set the rear panel...

  • Page 64: Rpingnst (Rear Panel Input Gain Step Change)

    rpingnst (rear panel input gain step change) rpoutgnpre (rear panel audio output gain preset) This command is used as an update to step the gain by This command may be used as a query to read the rear the amount specified, either up or down. The input panel output gain preset, or as an update to set the channel is specified by using the address syntax.

  • Page 65: Dm84 Command Grammar Rules

    DM84 Command Grammar Rules Augmented BNF[1] Rules for the LecNet2 command grammar: OCTET = %x00-FF ; <any 8-bit sequence of data> CHAR = %x01-7F ; any US-ASCII character except NUL (1 - 127) UPALPHA = %x41-5A ; any US-ASCII uppercase letter "A".."Z"...

  • Page 66: Macros And Macro Control

    “contact closure”. When used with a variable contained in the macro can then be executed by issuing resistor, the inputs respond to the applied voltage in the a single Run command to the DM84. There are two range 0 to 5 VDC. advantages to this approach:...
  • Page 68 This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot correct the defect in your equipment, it will be replaced at no charge with a similar new item.

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