Dolby Laboratories DM100 User Manual
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Dolby Laboratories DM100 User Manual

Dolby Laboratories DM100 User Manual

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Dolby Laboratories, Inc.
Corporate Headquarters
Dolby Laboratories, Inc.
100 Potrero Avenue
San Francisco, CA 94103-4813
Telephone 415-558-0200
Facsimile 415-863-1373
www.dolby.com
European Headquarters
Dolby Laboratories
Wootton Bassett
Wiltshire, SN4 8QJ, England
Telephone (44) 1793-842100
Facsimile (44) 1793-842101
DISCLAIMER OF WARRANTIES: Equipment manufactured by Dolby Laboratories is
warranted against defects in materials and workmanship for a period of one year from the date
of purchase. All warranties, conditions, or other terms implied by statute are excluded to the
fullest extent allowed by law.
LIMITATION OF LIABILITY: It is understood and agreed that Dolby Laboratories'
liability whether in contract, in tort, under any warranty, in negligence or otherwise shall not
exceed the cost of repair or replacement of the defective components and under no
circumstances shall Dolby Laboratories be liable for incidental, special, direct, indirect, or
consequential damages (including but not limited to damage to software or recorded audio or
visual material), or loss of use, revenue, or profit even if Dolby Laboratories or its agents have
been advised, orally or in writing, of the possibility of such damages.
Dolby, the double-D symbol, AC-3, and Surround EX are trademarks of Dolby Laboratories. Toslink
is a trademark of Toshiba Corporation. Windows is a trademark of Microsoft Corporation.
 2000 Dolby Laboratories Inc; all rights reserved.
DM100 User's Manual
i
Issue 1
Part No. 91751
S00/13416

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Summary of Contents for Dolby Laboratories DM100

  • Page 1 (including but not limited to damage to software or recorded audio or visual material), or loss of use, revenue, or profit even if Dolby Laboratories or its agents have been advised, orally or in writing, of the possibility of such damages.

  • Page 2: Table Of Contents

    (e.g., “[STATUS]”). References to multiple button combinations means sequences, not simultaneous button presses. Press the first button, release, and press the next button. Chapter 1 Introduction 1.1 About the DM100............. 1-1 Chapter 2 Getting Started 2.1 Power................ 2-1 Battery Installation........2-1 [Power] Button..........
  • Page 3 DM100 User’s Manual Chapter 3 Operation: Status Mode 3.1 Main Status Screen........... 3-1 Dolby E ............3-2 Dolby Digital ..........3-3 PCM .............. 3-4 3.2 The Status Menus ............. 3-5 3.2.1 Dolby E Metadata Input Menu...... 3-6 Px Prog Desc..........3-7 Px Dialogue Lev..........
  • Page 4 3.2.3 AES3 Status Menu........3-24 3.2.4 Input Level Menu.......... 3-25 3.2.5 Generator Status Display ......3-26 3.2.6 Video Reference Status Display ....3-26 3.2.7 Timecode Status Display ......3-27 3.2.8 Error Statistics Menu ........3-28 3.2.9 DM100 Firmware Version......3-28...
  • Page 5 5.2 Unit Reset ..............5-3 Restore Default Settings........ 5-3 Hardware Reset ..........5-3 5.3 Connector Pinout Information........5-4 RS-232 Serial Port............ 5-4 5.3.2 XLR Connectors ........... 5-4 5.3.3 Headphone Connector........5-4 5.4 DM100 Specifications ..........5-5 5.5 System Block Diagram..........5-5...

  • Page 7: Chapter 1 Introduction

    The unit allows audio systems integrators and service engineers to quickly test the integrity and composition of these signals throughout a facility. The DM100 is intended for use in broadcast, cable, DBS, and post-production facilities, as well as DVD mastering and home theater installation.

  • Page 9: Chapter 2 Getting Started

    Chapter 2 Getting Started Power The DM100 is powered by four standard AA 1.5 V batteries or from an external 6V, 800 mA DC power supply via the power input connector. The internal batteries are disconnected when the external DC power supply is used.

  • Page 10: [Power] Button

    DM100 User’s Manual Getting Started [Power] Button To turn on the DM100, press and hold the [Power] button down for two seconds. The display reads as shown for approximately one second while a self-test diagnostic runs. Model DM100 Unit Name The power-on process ends with the DM100 operating in the last-used state.

  • Page 11: External Dc Power Supply

    The LCD backlight and keypad backlights are also enabled, overriding the LCD Backlight setting. See section 4.6. Rear Belt Clip/Stand The pull-out clip on the rear of the DM100 can be used as a handy belt clip, or a stand. Raise the clip by following these two steps: 1.

  • Page 12: Inputs

    (i.e., one 16-bit mode bitstream in each AES3 channel). Dolby E The DM100 accepts 16-, 20-, and 24-bit Dolby E bitstreams at NTSC (27.97 Hz) and PAL (25 Hz) rates. If the input signal does not contain a header indicating that a pre- encoded bitstream is being received, the DM100 assumes the input signal is PCM audio.

  • Page 13: Outputs

    DM100 User’s Manual Getting Started Outputs The XLR and BNC output connectors are always active. The Toslink connector is enabled when it is selected. The digital output signal can be: • Pass-through Dolby Digital, Dolby E, or PCM The output clock is locked to the digital input.

  • Page 14: Hookup

    DM100 User’s Manual Getting Started Hookup The figure shows the locations for connecting components to the DM100. RCA F to BNC M Part Number 70218 Ref Video In BNC F to RCA M Part Number 70217 Toslink Cable Power Adapter...

  • Page 15: Quick Start

    View” is displayed. Press [ENTER] to see the current settings. See section 3.2.5. You can even connect the output of the DM100 to the input. By doing this you can listen to the test stream and view all of the...

  • Page 17: Chapter 3 Operation: Status Mode

    DM100 User’s Manual Chapter 3 Operation: Status Mode After power-on, the DM100 defaults to Status mode, with the top-level main status screen displayed. Status mode is used for displaying, monitoring, and analyzing the input bitstream. Main Status Screen The main status screen is the top level of the status menu tree. It displays one of the following possible combinations of information.

  • Page 18: Dolby E

    DM100 User’s Manual Operation: Status Mode Dolby E When the incoming bitstream is Dolby E, the following information will be displayed: Dolby E 5.1+2 24bit Program Configuration 5.1+2 16bit Bit Depth 5.1+2x1 20bit 24bit 4+2x2 4+2+2x1 4+4x1 3x2+2x1 2x2+4x1 2+6x1...

  • Page 19: Dolby Digital

    DM100 User’s Manual Operation: Status Mode Dolby Digital When the incoming bitstream is Dolby Digital, the following information will be displayed: Dolby Digital 3/2L 448kbps 56kbps “L”means the LFE- 64kbps enabled bit is set in the 80kbps bitstream 96kbps 112kbps...

  • Page 20: Pcm

    DM100 User’s Manual Operation: Status Mode When the incoming bitstream is PCM, and the DM100 has locked to it, the following information will be displayed: 44.1 kHz 48 kHz 44.1 kHz 32 kHz Unknown Rate...

  • Page 21: The Status Menus

    DM100 User’s Manual Operation: Status Mode The Status Menus From the top-level main Status display described above, you can step through the status menus by pressing the [Up] or [Down] button. Each menu below the top main Status display is described in the following manual sections.

  • Page 22: Dolby E Metadata Input Menu

    Lines [Down] Px Copyright and the Dolby E frame boundary. [Down] Dolby E input not present or DM100 blank Px Orig Bitstrm decode format is not Dolby E [Down] Video reference not present Px Extnd Bitstrm...

  • Page 23: Px Prog Desc

    Dolby E program description display: Px Prog Descr Description text The DM100 has a 32-character buffer for each program, which stores the first characters in the description text field for that program. The display scrolls through the text automatically if the string is greater than 16 characters.

  • Page 24: Px Channel Mode

    DM100 User’s Manual Operation: Status Mode Px Channel Mode A typical example is shown for the Dolby E Channel Mode display: P2 Channel Mode 2/0 Stereo 1/0 Mono 2/0 Stereo Px LFE Channel P2 LFE Channel Disabled Disabled Enabled Px Bitstrm Mode...

  • Page 25: Px Line Mode Pro

    DM100 User’s Manual Operation: Status Mode Px Line Mode Pro Px RF Mode Pro The Dolby E Line Mode and RF Mode Profile program parameters display the same second-line display. A typical example is shown for the RF Mode Profile display:...

  • Page 26: Px Center Dwnmx

    DM100 User’s Manual Operation: Status Mode Px Center Dwnmx A typical example is shown for the Dolby E Center Downmix display: P2 Center Dwnmx 0.500 (-6.0 dB) 0.707 (-3.0 dB) 0.596 (-4.5 dB) 0.500 (-6.0 dB) *************** Px Srnd Dwnmx...

  • Page 27: Px Mixing Level

    DM100 User’s Manual Operation: Status Mode Px Mixing Level A typical example is shown for the Dolby E Mixing Level display: P2 Mixing Level 80 dB 80 dB 81 dB 82 dB 111 dB Does Not Exist Px Room Type...

  • Page 28: Px Extnd Bitstrm

    DM100 User’s Manual Operation: Status Mode Px Extnd Bitstrm A typical example is shown for the Extended Bitstream metadata display. Other possibilities are shown: Px Extnd Bitstrm P2 Pref Dwnmx ENTER to view Lt/Rt Not Indicated Px Pref Dwnmx Lt/Rt...

  • Page 29: Px Dc Filter

    Enabled Px Srnd Ph Shift When any of these Dolby E metadata program is selected, the DM100 displays the same information as shown in the example. A typical example is shown for the Dolby E Lowpass Filter display. Px Begin Gain...

  • Page 30: Dolby Digital Metadata Input Menu

    DM100 User’s Manual Operation: Status Mode 3.2.2 Dolby Digital Metadata Input Menu After pressing [ENTER] to select this function, press the [Down] or [Up] button to select the parameter you wish to display. Dolby Digital MD ENTER to View DD Dialogue Lev...

  • Page 31: Dd Dialogue Lev

    DM100 User’s Manual Operation: Status Mode DD Dialogue Lev A typical example is shown for the Dolby Digital Dialogue Normalization Status display: DD Dialogue Lev –27 dB *************** –1 dB –2 dB –3 dB –31 dB DD Channel Mode A typical example is shown for the Dolby Digital Channel Mode...

  • Page 32: Dd Data Rate

    Main Complete Main M & E Assc Visual Imp Assc Dialogue Assc Commentary Assc Emergency Assc Voice Over Main Sv Karaoke “N/A” indicates that a Dolby Digital input is not present, or the DM100 decode format is not Dolby Digital. 3-16...

  • Page 33: Dd Line Mode Pro

    DM100 User’s Manual Operation: Status Mode DD Line Mode Pro DD RF Mode Pro The Dolby Digital Line Mode and RF Mode Profile parameters give the same display style. A typical example is shown for the RF Mode Profile display: DD RF Mode Pro ±xx dB...

  • Page 34: Dd Srnd Dwnmx

    DM100 User’s Manual Operation: Status Mode DD Srnd Dwnmx A typical example is shown for the Dolby Digital Surround Downmix display: DD Srnd Dwnmx 0.707 (-3.0 dB) 0.707 (-3.0 dB) 0.500 (-6.0 dB) 0 (-999 dB) *************** Not Active DD Dolby Srnd...

  • Page 35: Dd Room Type

    DM100 User’s Manual Operation: Status Mode DD Room Type A typical example is shown for the Dolby Digital Room Type display: DD Room Type Large Not Indicated Large Small ************** Does Not Exist DD Copyright DD Orig Bitstrm A typical example is shown for the Dolby Copyright status display.

  • Page 36: Dd Extnd Bitstrm

    DM100 User’s Manual Operation: Status Mode DD Extnd Bitstrm A typical example is shown for the Extended Bitstream information display. Other possibilities are shown: Px Extnd Bitstrm DD Pref Dwnmx ENTER to view Lt/Rt Not Indicated DD Pref Dwnmx LtRt...

  • Page 37: Dd Dual Mono Md

    DM100 User’s Manual Operation: Status Mode DD Dual Mono MD After pressing [ENTER] to select this function, press the [Down] or [Up] button to select the Dual Mono metadata parameter you wish to display. A typical example screen is shown:...

  • Page 38: Dd Format

    DM100 User’s Manual Operation: Status Mode DD Format A typical example is shown for the Dolby Digital Format status display: DD Format Pro 32-bit Pro 32-bit Pro 16-bit Ch1 Pro 16-bit Ch2 Pro 16-bit Ch1&2 Consumer DD Sample Rate A typical example is shown for the Dolby Digital Sample Rate...

  • Page 39: Dd Stream

    DM100 User’s Manual Operation: Status Mode DD Stream # A typical example is shown for the Dolby Digital Stream Number status display: DD Stream # 3-23...

  • Page 40: Aes3 Status Menu

    DM100 User’s Manual Operation: Status Mode 3.2.3 AES3 Status Menu After pressing [ENTER] to select this menu, press the [Down] or [Up] button to select the AES3 parameter you wish to display. A typical example screen is shown: AES3 Status...

  • Page 41: Input Level Menu

    DM100 User’s Manual Operation: Status Mode 3.2.4 Input Level Menu Press [ENTER] to display Input Level status. The display combinations are shown below. A typical example screen is shown: Input is Dolby E Input is Dolby Digital Prog 1—8 Displays program...

  • Page 42: Generator Status Display

    DM100 User’s Manual Operation: Status Mode 3.2.5 Generator Status Display Press [ENTER] to display Generator status. The possible display combinations are shown below: Generator ENTER to view The unit is generating a Generating non-PCM bitstream bitstream name The unit is generating a...

  • Page 43: Timecode Status Display

    DM100 User’s Manual Operation: Status Mode 3.2.7 Timecode Status Display Timecode 00:00:00:00 Timestamp data burst delay, if present, Timecode indicates the encode latency referenced to A/V sync. A positive number indicates an advance in milliseconds from the reference, while a negative number indicates a delay.

  • Page 44: Error Statistics Menu

    Professional Channel Status CRC CCRC:dd 3.2.9 DM100 Firmware Version This last Status menu item displays the version of the firmware currently installed in your DM100. Firmware Version 1.0.0.0 Pressing [DOWN], [ESC], or [STATUS] returns the display to the top-level Main Status screen.

  • Page 45: Chapter 4 Operation: Setup Mode

    Chapter 4 Operation: Setup Mode Pressing [SETUP] switches the DM100 into Setup mode. Use this function to configure your DM100. All setup settings are saved when the unit is turned off. The settings shown in bold are the factory defaults.

  • Page 46: Monitor Control

    Decode Format chooses the type of bitstream the DM100 will decode. This will normally be set to Autodetect; however, it is possible to force the DM100 to decode only one stream type if required. Output Ch Map chooses which audio channels or downmix (Lt,Rt or Lo,Ro) are output from the headphone or speaker.
  • Page 47 DM100 User’s Manual Operation: Setup Mode Monitor Control Decode Format Autodetect Decode Format Dolby E Dolby Digital [Down] Output Ch Map L=Lo R=Ro [Down] L=Lt R=Rt L=L R=R Dolby E Prog Sel L=C R=C L=Ls R=Rs [Down] L=LFE R=LFE DE Dialogue Lev...

  • Page 48: Gen Control

    PC to the DM100 using the supplied cable. The baud rate is fixed at 115.2 kbps. Activate the Upload Bitstream function on the DM100 and follow the prompts on the PC software supplied. During the upload, the DM100 display will show progress. When complete, the DM100 will reboot.
  • Page 49 Channel 2 Dolby Digital streams Channel 1+2 [Down] Upload Bitstream ENTER=Yes ESC=No During the upload, the display Ready to Load will show progress. When complete, <ESC> to Abort the DM100 will reboot. The baud rate is fixed at 115.2 kbps.

  • Page 50: Aes3 Output

    AES3 Output The AES3 Output menu allows the user to control the value of the AES3 status bits present on the output of the DM100. The output can be set to pass through each parameter from the input (or from the generator), or each parameter can be manually set to a desired value.

  • Page 51: User Presets

    DM100 User’s Manual Operation: Setup Mode User Presets Up to four user presets can be saved, named, and recalled. These presets contain a copy of the DM100 setup information. User Presets Recall Presets 01-<name 1> Recall Preset 02-<name 2> 03-<name 3>...

  • Page 52: I/O Control

    I/O Control The I/O control menu configures the physical input and output connections of the DM100. Input Select allows the user to choose a specific physical input rather than the default of Autodetect. Gen Clock Source chooses the reference signal for the generator.

  • Page 53: System Settings

    DM100. RS-232 Baud Rate controls the speed of the RS-232 port logging data. Unit Name allows entry of up to 12 characters to give a DM100 a unique identity. This is displayed during power on. The Power Management function controls how long the unit will remain switched on after the last button press when operating on battery power.
  • Page 54 DM100 User’s Manual Operation: Setup Mode Note When powered from the external power supply, the Power Management setting is ignored and the unit remains switched on. The LCD backlight and keypad backlights are also turned on, overriding the LCD Backlight setting.

  • Page 55: Chapter 5 Reference Information

    DM100 User’s Manual Chapter 5 Reference Information Data Transfer Connect the RS-232 port on the front of the DM100 to a computer using the cable provided. The RS-232 serial interface is used for: • Test bitstream loading. • Data logging. Status information can be transferred from the DM100 via a terminal program.

  • Page 56: Firmware Upgrade

    See sections 4.5 and 4.6. Firmware Upgrade With the DM100 powered off, press the [Power] button, then hold down the [Setup] button. The DM100 will display the Firmware Upgrade screen. The data transfer operates at a fixed baud rate of 115.2 kbps.

  • Page 57: Unit Reset

    In the unlikely event that the restore procedure above does not work, the unit can also be reset by inserting a pen or paper clip into the RESET hole on the back of the DM100. The unit will reset and power off.

  • Page 58: Connector Pinout Information

    DM100 User’s Manual Reference Information Connector Pinout Information 5.3.1 RS-232 Serial Port Function Description asynchronous data out Ground asynchronous data in 5.3.2 XLR Connectors Connection Signal Ground Signal + Signal - 5.3.3 Headphone Connector Connection Left Channel Ring Right Channel...

  • Page 59: Dm100 Specifications

    DM100 User’s Manual Reference Information DM100 Specifications Sampling Rates Headphone Output 48 kHz for all modes, +5.8 dBu max (adjustable) into 600Ω, 32 kHz and 44.1 kHz for Dolby Digital 1/8-inch standard stereo headphone jack and PCM Case Video Frame Rates ABS plastic hand-held enclosure 29.97 and 25 fps...

  • Page 60: System Block Diagram

    DM100 User’s Manual Reference Information System Block Diagram...

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