DMA8Plus

Dolby Digital Media Adapter DMA8Plus

The Dolby Digital Media Adapter DMA8Plus provides digital-to-analog conversion of a digital cinema system’s audio to integrate with an existing cinema processor that may not already provide this capability. Four separate digital inputs will accept up to eight channels of PCM digital audio as well as Dolby Digital, Dolby E, Dolby Pro Logic, and Dolby Pro Logic II bitstreams. A separate, adjustable global audio delay is assigned to each digital input to ensure that sound and picture are perfectly synchronized. The front panel is designed for usability, with manual control and digital clock status for each digital input selection, Decode mode status, and eight-channel signal presence. Dolby DMA8Plus setup software is used during installation as well as for interactive remote monitoring.

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Product Description

Dolby Digital Media Adapter DMA8Plus

DMA8Plus

The Dolby Digital Media Adapter DMA8Plus provides digital-to-analog conversion of a digital cinema system’s audio to integrate with an existing cinema processor that may not already provide this capability. Four separate digital inputs will accept up to eight channels of PCM digital audio as well as Dolby Digital, Dolby E, Dolby Pro Logic, and Dolby Pro Logic II bitstreams. A separate, adjustable global audio delay is assigned to each digital input to ensure that sound and picture are perfectly synchronized. The front panel is designed for usability, with manual control and digital clock status for each digital input selection, Decode mode status, and eight-channel signal presence. Dolby DMA8Plus setup software is used during installation as well as for interactive remote monitoring.

Dolby DMA8PLUS Key Features

  • Flexible Inputs and Outputs

    Four digital inputs accept up to eight channels of PCM digital audio as well as Dolby Digital and Dolby E bitstreams. Two-channel audio sources can be decoded as discrete L/R, Dolby Pro Logic, or Dolby Pro Logic II. Analog audio outputs are calibrated to cinema processor reference levels to ensure a straightforward interface with your cinema’s existing sound processor.

  • Easy Setup

    Easy to set up via a laptop computer, the Dolby DMA8Plus can be controlled by your cinema’s automation system via standard GPI/O automation, serial, or Ethernet commands.

  • External Source Compatibility

    Includes a switched “through” connection for external film audio decoders or six-channel analog sources such as the Dolby Digital Adapter DA20. (In this way, both the DMA8Plus and the DA20 may share the cinema processor’s six-channel input format.)

  • Adjustable Global Audio Delay

    A separate adjustable global audio delay is assigned to each digital input to ensure that sound and picture are perfectly synchronized during digital cinema presentations. Different delays can be assigned to different inputs, giving flexibility with alternative content sources that require different delays.

  • Convenient Front-Panel Design

    The front panel is designed to provide a wealth of feedback and usability. Simple manual control is provided by the four digital input buttons and one film pass-through button. The valid indicators verify digital signal presence on each associated input. Other indicators reveal the bitstream format, the Decode mode, and eight-channel analog output signal presence. A USB port provides a reliable PC connection for the setup software application.

Dolby DMA8Plus Specifications

Construction

  • 1-U rackmount chassis frame

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, 29.97, 30 fps)
  • Dolby Pro Logic II
  • Dolby Pro Logic

Dolby Cinema Processor Compatibility

  • CP650, CP500, CP200, CP65, CP55, CP45

Global Audio Delay

  • Adjustable delay of all channels from 0–250 ms

Surround Channel Delay

  • Digital media program sources: adjustable from 0–150 ms

Power Requirements

  • 100–240 VAC, 50–60 Hz

Dimensions and Weight

  • 1-U rackmount chassis
    44 × 483 × 342 mm (1.75 × 19 × 13.5 inches)
  • Net: 4.5 kg (10 lb)

Environmental Conditions

  • Operating: 0°C–40°C (32°F–104°F),
    Nonoperating (storage): 0°C–85°C (32°F–185°F)
  • Humidity: 20%–80% relative, noncondensing

Regulatory Notices

  • North America: This unit complies with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules, and Industry Canada ICES-003 Class A requirements. It is UL Listed for the US and Canada.
  • Europe: This unit complies with the requirements of Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC and carries the CE marking accordingly. RoHS compliant.

Dolby DMA8Plus Front Panel Specifications

PC Connection

  • USB port for setup operations and software upgrades

Input Selector Buttons

  • Digital 1 through 4 source buttons
  • Film source button

Indicators

  • Valid LEDs represent digital input clock presence for each digital input
  • Format LEDs indicate PCM, Dolby Digital, Dolby E, or Aux (future) processing
  • Decode mode
  • LEDs indicate Dolby Pro Logic II, Pro Logic®, or Discrete modes
  • Output activity LEDs indicate signal presence of each output channel

Dolby DMA8Plus Rear Panel Specifications

Analog Audio Output

  • 25-pin male D-connector, balanced for connecting to a Dolby cinema processor
  • L, C, R, Ls, Rs, Sw, 7, 8

Analog Audio Input

  • 25pin female Dconnector for sixchannel analog input from the output of a DA20 orother external processor, which is passed through when Film mode is selected or duringpoweroff

CP, DA Control

  • 25pin male and female connectors for format sensing and control providing a customized interface for each Dolby cinema processor

RS-232 Serial Port

  • 9pin female Dconnector for interfacing with softwarebased 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

  • 9pin female Dconnector, ground switching relay contact closure for each frontpanelbutton control; relay contacts provided for CP200 SW control (closure upon any digitalformat selection)

Digital 1 Input (4 × AES)

  • 25-pin female D-connector provides four AES/EBU inputs of PCM audio (up to eight channels)
  • Input impedance: 110Ω

Digital 2 Input (1 × AES)

  • Male BNC connector, unbalanced, per AES-3id-1995/SMPTE 276M
  • Input impedance: 75Ω

Digital 3 Input (1 × AES)

  • Male BNC connector, unbalanced, per AES-3id-1995/SMPTE 276M
  • Input impedance: 75Ω

Digital 4 Input (Optical)

  • Optical connector for digital input