DMA8Plus Digital Media Adapter Installation and User’s Manual Issue 2 Part Number 91805
Dolby Laboratories, Inc. Corporate Headquarters Dolby Laboratories, Inc. 100 Potrero Avenue San Francisco, CA 94103‐4813 USA Telephone 415‐558‐0200 Fax 415‐863‐1373 www.dolby.com European Headquarters Dolby Laboratories, Inc. Wootton Bassett Wiltshire SN4 8QJ England Telephone 44‐1793‐842100 Fax 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.
Regulatory Notices FCC 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.
Regulatory Notices 15. CAUTION: Troubleshooting must be performed by a trained technician. To reduce the risk of electric shock, do not attempt to service this equipment unless you are qualified to do so. 16. Do not defeat the safety purpose of the polarized or grounding‐type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety.
Regulatory Notices IMPORTANT SAFETY NOTICE This unit complies with safety standard EN60065 as appropriate. The unit shall not be exposed to dripping or splashing and no objects filled with liquids, such as coffee cups, shall be placed on the equipment. To ensure safe operation and to guard against potential shock hazard or risk of fire, the following must be observed: o Ensure that your mains supply is in the correct range for the input power requirement of the unit.
Table of Contents Chapter 1: Introduction 1.1 1.2 DMA8Plus Front Panel .........................................................................................................2 1.1.1 Digital Input Push Buttons........................................................................................2 1.1.2 Film Push Button......................................................................................................3 1.1.3 Valid Input Clock ...........................................................
Table of Contents 3.5.2 PCM Settings .........................................................................................................24 3.5.3 Dolby Digital Settings.............................................................................................25 3.5.4 Dolby E Settings ....................................................................................................26 3.6 Global Settings.................................................................................................
List of Figures Figure 1-1 Figure 1-2 Figure 2-1 Figure 3-1 Figure 3-2 Figure 3-3 Figure 3-4 Figure 3-5 Figure 3-6 Figure 3-7 Figure 3-8 Figure 3-9 Figure 3-10 Figure 3-11 Figure 3-12 Figure 3-13 DMA8Plus Front Panel .......................................................................................................... 2 DMA8Plus Rear Panel........................................................................................................... 4 Checking the User-Serviceable Fuses ...................
List of Tables Table 1-1 Table 2-1 Table 4-1 Table 4-2 Table 4-3 Table 4-4 Table 4-5 Table 4-6 Table 4-7 Table 4-8 Table 4-9 Table 4-10 Table 4-11 Digital Push Button Functionality............................................................................................ 2 Examples of Available Balanced/Unbalanced Adapters ........................................................ 9 Rear-Panel Connector Descriptions and Types ...................................................................
Chapter 1 Introduction The Dolby® DMA8Plus Digital Media Adapter is a direct result of Dolby Laboratories’ continued leadership in the development of innovative cinema technologies. The DMA8Plus provides all the interface capabilities and digital inputs you’re likely to need. With the DMA8Plus, you can adapt your existing sound system for digital cinema and other digital audio sources.
Introduction 1.
DMA8Plus Front Panel 1.1.2 Film Push Button When you press this button it illuminates, indicating that film mode is active. When the DMA8Plus is in Film mode, audio is received from the analog audio input, which then passes through to the analog audio output (while the unit is in Film mode or when powered off). The DMA8Plus sends a format pulse to the cinema processor to enable an appropriate format (see Table 4‐8).
Introduction 1.
DMA8Plus Rear Panel 1.2.3 4xAES Input (AES/EBU) This 25‐pin female D‐connector receives four AES3 streams, which are linked to the digital 1 button. Typically, this input connects to a Dolby Digital cinema server. It accommodates PCM audio at 96, 48, and 44.1 kHz (16, 20, and 24 bit), Dolby Digital at all data rates and sample rates, and Dolby E at frame rates of 23.98 (24 pulldown), 24, 25, 29.97, and 30 fps. The decoding of coded audio is restricted to the first AES3 channel pair.
Introduction 1.2.9 Audio Out to CP Connector This connector is an eight‐channel analog output (L, C, R, Ls, Rs, SW, and unassigned channels 7 and 8), which is present on a male 25 pin D‐connector (300 mV reference level). This is either the audio received from the ANALOG AUDIO IN port (Film mode) or the audio converted from one of the digital input sources. This connector has a floating ground.
Chapter 2 Installation and Maintenance 2.1 DMA8Plus Floating Signal Grounds The DMA8Plus is designed to eliminate ground loops, which can occur when the unit is connected to multiple external equipment grounds. For this reason, the following DMA8Plus connectors have isolated grounds: • Analog audio inputs and outputs: When in Pass‐Through (film) mode, the low side of each signal is switched along with the hot side. Note that the positive side of the signal is capacitively coupled.
Installation and Maintenance Professional digital audio equipment typically uses the AES/EBU method because balanced operation yields superior noise immunity, as it does with analog audio signals, and because XLR connectors are the standard on analog professional audio equipment. Professional video equipment typically uses the AES‐3id variation of this interface, with BNC connectors.
Connections You can add BNC‐to‐RCA adapters for connecting to consumer S/PDIF connections. The following units use passive circuitry. Table 2-1 Examples of Available Balanced/Unbalanced Adapters Neutrik® Adapter Type Canare® XLR female 110Ω in to BNC female 75Ω out NA‐BF BCJ‐XJ‐TRA BNC female 75Ω in to male XLR 110Ω out NA‐BM BCJ‐XP‐TRA Higher‐priced units incorporating active circuitry are also available.
Installation and Maintenance 2.4.1 Checking the Two User-Serviceable Fuses The fuse rating for the user‐serviceable fuses is: T 1A L (time‐lag, 3.15 amp, 250 V, 20 mm, slow blowing) for all operating voltages. Warning: Before performing the following steps, be sure to disconnect the DMA8Plus power cable from the power source. 1. Open the DMA8Plus lid. 2. Remove the fuse cover, which covers the fuses. 3. Remove the two fuses from their slots, check each of them, and replace, if required. 4.
Mains Power Wiring 2.5 Mains Power Wiring In some countries the primary mains cable may not have a connector fitted. These nonterminated leads must be properly wired to an approved mains connector in accordance with the following international code: • Brown wire: Live or hot • Blue wire: Neutral • Green wire: Mains ground Warning: 2.6 If you are uncertain about the wiring of your AC mains outlet then do not use it. Consult a qualified electrician.
Installation and Maintenance Notes: C UL O AUTOMATION US CP650 Digital Cinema Processor Wootton Bassett U.K. San Francisco U.S. LISTED PROFESSIONAL AUDIO EQUIPMENT 4J06 MUTE U2 NONSYNC U1 11 10 13 SERIAL DATA (RS-232) READER 1 01 04 05 L L+ C C+ R R+ Ls Ls + Rs Rs + SW SW + IN N/C H/I OUTPUT ~ 50 - 60 Hz 120 W 100 - 240 Vac This device complies with Part 15 of the FCC Rules.
Wiring Diagrams Notes: READER 1 ANALOG ACC. / MAG. DIGITAL ACC. READER 2 (Accessory I/O Only) 1. Follow all local electrical and building codes. OPTICAL 1 R+ R– MIC. INPUT RTA PA PA N/C OPTICAL 2 MUX PWR MUX GND MUX DATA CAUTION To reduce the risk of fire replace only with same type and rating 250V time-lag fuse.
Installation and Maintenance Notes: 1. Follow all local electrical and building codes. MODEL DA20 2. Use earthed (grounded) conduit wherever possible. Avoid routing signal wiring near electric motors, rectifiers, power wiring, dimmer wiring or other sources of electrical noise. DIGITAL FILM SOUND PROCESSOR Audio Out to CP WARNING J8 To reduce the risk of fire or electric shock do not expose this equipment to rain or moisture. No user serviceable parts inside. Refer all service to qualified personnel.
I Wiring Diagrams Notes: MODEL DA20 DIGITAL FILM SOUND PROCESSOR 1. Follow all local electrical and building codes. Audio Out J8 to CP WARNING To reduce the risk of fire or electric shock do not expose this equipment to rain or moisture. No user serviceable parts inside. Refer all service to qualified personnel. Audio In J7 from CP CP Sense/ J6 Control To DMA8 AUDIO OUT TO CP Dolby Part Number 83132 (Part of CDA/55) See Note 5.
Installation and Maintenance MODEL DA20 Shielded Audio Cable Dolby Part Number 83528 Part of CDMA/A See Note 5. DIGITAL FILM SOUND PROCESSOR Audio Out J8 to CP WARNING To reduce the risk of fire or electric shock do not expose this equipment to rain or moisture. No user serviceable parts inside. Refer all service to qualified personnel. Audio In J7 from CP Dolby Part Number 83135 (Part of CDA/45) See Note 5. 3.
Wiring Diagrams Notes: 1. Follow all local electrical and building codes. JM2 MODEL DA20 DIGITAL FILM SOUND PROCESSOR Audio Out J8 to CP Audio In J7 from CP JM3 (12) BS1 (1) BS2 (1) JM5 SP2-14 No user serviceable parts inside. Refer all service to qualified personnel. SK13 SP2 16 CAT.150 T CAT.160 23 RL2 3.
Chapter 3 Setting up the DMA8Plus 3.1 DMA8Plus Setup Software The setup software is required to complete the DMA8Plus installation and perform other functions. You begin by installing the setup software on a PC running Microsoft® Windows® XP Service Pack 2 or later.
Setting up the DMA8Plus 3.2 Installing and Running the Setup Software 1. Run the DMA8Plus installation program to install the setup software on your PC. The welcome screen appears, as shown in Figure 3‐1. Figure 3-1 Installation Welcome Screen 2. Click Next, then follow the onscreen instructions to install the software. 3. Launch the setup software by selecting Start>Programs>Dolby>DMA8Plus Setup, then connect your PC to the DMA8Plus front‐panel USB port to establish a connection.
Profile Figure 3-2 3.3.1 Profile Settings Window Profile Settings Selecting this tab displays the Profile settings window. In this window, you can enter the corresponding information for your system. This information defines the Theatre Profile for the local auditorium. In addition, Input Descriptions appears for each digital input. You can edit each description and enter the desired information. 3.3.
Setting up the DMA8Plus 3.4 Network Selecting this tab displays the DMA8Plus Ethernet Settings window, as shown in Figure 3‐3. In this window, you can configure the DMA8Plus network settings. If you change the network settings, two buttons are highlighted below your settings: Discard Changes and Apply Changes. Clicking one of these buttons performs the respective action. The default entries are set for a Dolby Digital Cinema system.
Digital Inputs 1, 2, 3, and 4 3.5 Digital Inputs 1, 2, 3, and 4 Selecting any of these tabs displays the corresponding digital input window. The examples in Figure 3‐4 and Figure 3‐5 show the Digital Input 1 and Digital Input 2 windows. The same setting options are provided in each digital input window, except for the PCM Channel Assignment, which appears only in the Digital Input 1 window. Following is a description of each of these settings.
Setting up the DMA8Plus Figure 3‐3 Figure 3-5 3.5.1 Digital Input 2 Window Global Delay Specifies an audio delay (in addition to the DMA8Plus decoding delay of approximately 7 ms for 4xAES PCM). This function synchronizes the audio with the video that is required for digital cinema projectors, which add a video processing delay. Use the up and down arrows to set the Global delay between 0 and 250 ms. You can specify a different Global delay for digital 1, digital 2, digital 3, and digital 4.
Digital Inputs 1, 2, 3, and 4 To reassign the input channels, use the drop‐down menu for each of the AES channel inputs or click one of the three preset buttons (L/R C/Sw/ Ls/Rs, L/C R/Ls, Rs/Sw, or L/Ls C/Rs R/Sw). To activate your changes, click the Apply changes button. To cancel your changes, click the Discard changes button. 2Ch Decode Mode These options apply only to a two‐channel input stream. There are three options: Pro Logic, Pro Logic II, and Discrete L/R.
Setting up the DMA8Plus 3.5.4 Dolby E Settings Following is a description of the Dolby E settings. 2Ch Decode Mode Same functionality as for Dolby Digital, as described previously. Dialog Normalization Same functionality as for Dolby Digital, as described previously. Program Select You can select one of four possible programs to receive a Dolby E bitstream: P1, P2, P3, or P4. The default is P1. 3.6 Global Settings Selecting this tab displays the Global Settings window, as shown in Figure 3‐6.
Global Settings 3.6.1 CP Settings Following is a description of the cinema processor (CP) settings. Cinema Processor Selects the cinema processor connected to the DMA8Plus. This parameter affects the ‘To CP Control’ Pin Assignments. If you are not using a Dolby processor, select Custom and set the appropriate ‘To CP Control’ Pin Assignments for your setup.
Setting up the DMA8Plus 3.7 File Menu You can use the setup software File menu to load and save settings. Following is a description of each of these functions. 3.7.1 Loading Settings You can load a previously saved .dlb parameter file as follows: Select Open in the File menu, browse to the desired .dlb file on your PC, and open that file. Figure 3‐5 Figure 3-7 3.7.2 Selecting Open in the File Menu Saving Settings You can save your current settings to a .
Action Menu 3.8 Action Menu You can use the setup software Action menu to connect to a local or remote device and update the DMA8Plus firmware, as described in the sections that follow. The Extract Logs and View Log options currently do not function. To extract an event log, see ASCII String Commands on page 42. Figure 3‐7 Figure 3-9 3.8.
Setting up the DMA8Plus 3.9 Window Menu You can use the Window menu to toggle in and out of Expert View mode. In addition, you can turn the Setup (tabs view) and/or Monitor display(s) on or off. Figure 3‐9 Figure 3-11 Window Menu Using Expert View When you select Expert View, all the DMA8Plus parameters and command strings appear, including some parameters not displayed in the tabs view.
Updating the DMA8Plus Firmware 3.10 Updating the DMA8Plus Firmware To update the DMA8Plus firmware: 1. Obtain the latest version of the Dolby Software Update application from Dolby Laboratories and install it on your PC. 2. Obtain the .dlb update file from Dolby Laboratories and copy it to your PC. 3. Connect your PC to the USB port on the DMA8Plus front panel. 4. Select Start>Programs>Dolby>Dolby Software Update to launch the update application. Figure 3‐11 Figure 3-13 Dolby Software Update Screen 5.
Chapter 4 Technical Reference 4.
Technical Reference Digital 4 In (Optical) Optical connector for digital input Digital Audio Source Formats PCM: 44.1, 48 and 96 kHz; 16‐, 20‐, 24‐bit Dolby Digital (AC‐3) Dolby E (23.98, 24, 25, 29.
DMA8Plus Specifications RS-232 Serial Port 9‐pin female D‐connector for interfacing with software‐based automation systems by way of ASCII command strings 10BASE-T Ethernet Port Ethernet port for interfacing with Dolby Digital Cinema systems and ASCII command strings Digital Media Automation 9‐pin female D‐connector, ground‐switching relay contact closure for each front‐panel button control Relay contacts provided for CP200 subwoofer control (closure upon any digital format selection).
Technical Reference 4.
Rear-Panel Connector Descriptions and Types 4.2.2 Analog Audio In/Out Connectors Caution: The DMA8Plus has balanced floating analog inputs and outputs. To achieve a full reference level signal, use both positive (Pos) and negative (Neg) pins for each channel.
Technical Reference 4.2.
Rear-Panel Connector Descriptions and Types 4.2.4 Remote RS-232 Serial Port Table 4-5 Serial Port Pinout Pin Number 4.2.5 Connection 1 No connection 2 Data Out 3 Data In 4 Connected to pin 6 5 Chassis Ground 6 Connected to pin 4 7 Connected to pin 8 8 Connected to pin 7 9 No connection Automation Connections—CP55 with Cat. No. 321 Interface Table 4-6 CP55 with Cat. No. 321 Automation Interface Card Installed CP55 with Cat. No. 222 SR/A Module and Cat. No.
Technical Reference 4.2.6 Cinema Processor Automation Pin Assignments Configuration settings provide default selections for cinema processor automation pin assignments for both film mode and the four digital modes. For example, when selecting a CP65 cinema processor, the default configuration for film mode is 7 and the default configuration for digital mode is 5. This corresponds to film mode enabling the CP65 Nonsync format and a digital mode enabling the CP65 Format 10.
Rear-Panel Connector Descriptions and Types Table 4-8 Pin Number 1 S0–S7 CP Automation Film Mode Format Defaults (film defaults shaded) DMA8Plus To CP/DA Control CP650 Automation CP500 Automation CP65 Automation (01) Mono (S1) (04) Dolby Automation A‐type select (04) Dolby (04) Dolby A‐type A‐type 3 (S2) (05) Dolby SR Automation select (05) Dolby SR (05) Dolby SR 4 (S3) (10) Dolby Automation Digital select (10) Dolby Digital (60) Nonsync / matrix 5 (S4) (11) Six‐channel Automation inpu
Technical Reference 4.2.7 RS-232 ASCII String Commands Table 4-9 ASCII String Commands DMA8Plus ASCII String dma8plus.sys.dig_1_global_delay 0 ‐ 250 dma8plus.sys.dig_2_global_delay 0 ‐ 250 dma8plus.sys.dig_3_global_delay 0 ‐ 250 dma8plus.sys.dig_4_global_delay 0 ‐ 250 dma8plus.sys.dolby_digital_2_channel_deco de_mode auto | lr_discrete | prologic | prologic_2 dma8plus.sys.dolby_digital_dialnorm off | on dma8plus.sys.
Rear-Panel Connector Descriptions and Types 4.2.
Technical Reference 4.2.9 DMA8Plus Audio Out to CP Pinouts Caution: When connecting the DMA8Plus audio output, be aware that it is balanced. The balanced design offers a high degree of hum rejection, but be careful when terminating to a cinema processor with unbalanced inputs. Although the CP500 and CP650 cinema processors each use an unbalanced six‐channel analog input, this is not a problem, as the unused pins of the associated 25‐pin D‐connector are all grounded. For best results, use cable Part No.
Rear-Panel Connector Descriptions and Types Table 4-11 Pin No. Audio Out to CP Cables (Cat. No. 757 dongle grounds shaded) DMA8Plus CP45 CP55 CP65 CP200 Audio Out to CP Cable 83306.
Technical Reference 4.3 Remote Commands and Control The DMA8Plus is designed for remote communication using serial or Ethernet connections. 4.3.1 Serial ASCII character strings sent to the rear‐panel serial port can be used to set DMA8Plus parameters and obtain current DMA8Plus status information. The currently available remote commands are listed in Table 4‐9. Serial Communication Connections can be made from the DMA8Plus rear‐panel serial port to a PC serial port or other RS‐232 device.
