Dolby DP-569

Dolby DP-569

Multi-Channel AC-3 Encoder Daily Rate: $50

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The Dolby DP569 is the reference Dolby Digital multichannel audio encoder for digital television and DVD authoring applications.

 

The DP569 is designed for digital television and disc-authoring applications, including automated broadcast installations and mastering for DVD and other recorded media. Supporting encoded bit ranges from 56 to 640 kbps and channel configurations from mono to 5.1-channel surround sound, the DP569 is our reference encoder for Dolby® Digital multichannel audio.

FEATURES:

With reliability proven in hundreds of TV stations around the world, the DP569 offers many broadcast-friendly features. Among them, an AES reference input locks the DP569 to the transmission equipment clock reference. The unit features selectable sample rate converters on the audio inputs. For on-air and other broadcast applications, the DP569 is capable of creating SMPTE 339M time stamp data bursts for synchronization with downstream equipment.

 

LTC and VITC timecode inputs allow Dolby Digital bitstreams to be time-stamped to synchronize with audio and video in DVD-authoring systems. The timecode inputs allow the encoder to stop and start accurately to create separate program segments and soundtrack files for DVD authoring. The DP569 supports all metadata, including the Dolby Digital Surround EXTM flag that enables downstream consumer A/V receivers and decoders to recognize the format. The unit provides real-time encoding for DVD authoring facilities and allows QC monitoring during the recording process.

 

A rear-panel connector provides an external metadata input from other Dolby products (for example, a DP572 Dolby E decoder). Fault-monitoring circuits warn of actual or potential system failure (via the GPI/O port), and bypass connections enable a hot-standby mode for broadcast installations.

 

Front-panel controls include buttons for accessing status, setup and configuration parameters, and display modes. Front- and rear-panel serial interfaces, along with supplied application software, make it possible to configure and control the DP569 from a Windows®-based PC or other remote device.

 

For decoding Dolby Digital material, the Dolby DP564 Multichannel Audio Decoder is an ideal companion to the DP569. The DP564 also provides decoding for Dolby Digital Surround EX, Dolby Pro Logic®, and Dolby Pro  Logic II formats.


TECHNICAL SPECIFICATIONS:

Audio Coding Algorithms

Dolby Digital (AC-3 as per ATSC A/52a specification)

 

Audio Sampling Rates
32, 44.1, or 48 kHz; user-selectable sample-rate conversion for independent input and encoded sampling rates

 

Frequency Response
Lower limit: <20 Hz; upper limit varies with data rate, sample rate, and channel mode; ±0.25 dB

 

Distortion
<0.01% at 1 kHz
<0.02%, 20 Hz algorithm upper limit

 

Dynamic Range
>110 dB

 

Coding Delay
Varies depending on operating mode; minimum 187 ms to maximum 450 ms
User-specified or automatic from external TTL pulse (External Delay Input)

 

Test Tone Generator
1 kHz (nominal) tone at 18 dB, 20 dB,
or µ dB (digital silence) referenced to
digital full-scale

 

Power Requirements
90-264 VAC, 50-60 Hz, auto sensing, 15 W maximum; this unit is designed to operate from a centrally switched power source

 

Dimensions and Weight
1-U rackmount: 44 × 483 × 305 mm
(1.75 × 19 × 12 inches)
Net: 3.9 kg (8.5 lb)


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