current_userManual - Audio Rents

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. The unit provides a straightforward interface to existing Dolby
cinema equipment, such as the CP650, CP500, CP65, CP55, CP45, CP200, and DA20. In
addition, the DMA8Plus provides theatres with audio solutions to today’s alternative
programming challenges, such as pay‐per‐view events and digital broadcasting.
The DMA8Plus has four separate digital inputs and accepts 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, Dolby Pro Logic ® , or Dolby Pro Logic II signals. Analog audio
outputs are calibrated to cinema processor reference levels to ensure a straightforward
interface with your cinema’s existing sound processor.
With the DMA8Plus, you can present high‐quality audio from the following audio sources
and formats:
• Dolby Digital Cinema
• Onscreen advertising servers
• Digital VTRs
• Digital satellite or cable TV receivers
• DVDs
• PCM
• Dolby Digital consumer bitstreams
• Dolby E
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, providing flexibility for alternative
content sources, which often require different delays.
The DMA8Plus is also compatible with existing theatre automation systems and ASCII
command strings. Its ability to handle multiple formats and future upgrades make it an
essential tool for an evolving digital cinema market.
The DMA8Plus is designed to fit between an existing DA20 (Dolby Digital film decoder)
and a cinema processor. This allows both the DA20 and DMA8Plus to share the six‐channel
input of the cinema processor. When the DMA8Plus is in Film mode, standard six‐channel
analog signals from any source, such as a Dolby DA20, are routed through the DMA8Plus
to the six‐channel input of a cinema sound processor (pass‐through). In one of the four
digital modes, the DMA8Plus decodes and routes signals from a variety of nonfilm sources
to the existing cinema sound processor.
Dolby ® DMA8Plus Digital Media Adapter Installation and User’s Manual 1