Dolby Laboratories DP524 Specifikace Strana 1

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1-31.4 Data Rates, Sample Rates and ChannelsPossible AC-3 Data Rates, Sample Rates and Number of ChannelsData Rate Sample rate Channels40 kbps 32kHz,

1-41.5 Regulatory NoticesFCCThis equipment has been tested and found to comply with the limits for a Class Adigital device, pursuant to part 15 of the

1-5IEC NOTICESIMPORTANT SAFETY NOTICEThis unit complies with the safety standard IEC65. To ensure safe operation and to guardagainst potential shock

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SECTION 2APPLICATIONSThe Dolby Model DP524 is suitable for a variety of point-to-point and point-to-multipoint digital transmission applications, incl

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SECTION 3PRE-INSTALLATION3.1 UnpackingBefore proceeding further, be sure to inspect the outer carton for shipping damage.If there has been any penetra

3-2OPEN THEDOORACTIVEFUSE CARRIER(LOWER)FUSECheck that the fuse in the active (lower) fuse carrier is of the correct rating. A sparefuse can be stored

3-3front, rear, and each of the sides of the unit. The three black screws shouldbe reserved for affixing at the front.Note The front panel is attached

3-43.4.1 Jumpers for Encoded Data In & Timing (J103)Receive Timing J205 / Receive Data J206 [terminated]Termination resistors (150 ohms) are prov

Model DP524Two-Channel AC-2 / AC-3Digital Audio DecoderUsers' ManualArtisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-

3-5Note Switch positions 5 and 6 take on two roles:• They set the Aux Data output baud rate when S101-2 is in the Normal position and S101-4 is in th

3-63.5.3 Switch no. 3 - Digital Output Format Selection [up]Position this switch to corresponds to the type of digital output signal format. Referto S

SECTION 4INSTALLATION4.1 MountingThe DP524 is designed for 19 inch rack mounting, but may be mounted in any planeand with any orientation. It occupies

4-2For optimum immunity to radio-frequency interference, cable shields must beconnected to the shells of the XLR connectors, not to pin 1.In an instal

4-3Baud Rate S101-5 S101-60 Down Down1200 Down Up2400 Up Down9600 Up UpWhere is baud rate of the Encoder (generating the Aux data stream) ishigher tha

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SECTION 5OPERATIONOnce the DP524 is installed and operational, no user-intervention is required. Innormal operation, one of the Green LEDs will indica

5-25.2 Rear Panel Level ControlsEach analog output connector has a level control adjacent to it. Each analog outputis adjustable (at full scale) over

SECTION 6INTERFACE SPECIFICATION AND DESCRIPTION6.1 DP524 Interface SpecificationsAES/EBU Digital Audio Output, J101XLR-type connector, 5V p-p typical

6-2Status / Control, J104, 25-pin D-connector:Pin Connection Comments1 NC Do Not Connect2 NC Do Not Connect3 NC Do Not Connect4 NC Do Not Connect5 NC

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6-36.2 RS-449 Interface Description6.2.1 Functional DescriptionThe Dolby Model DP524 provide a standard RS-449 interface in the type DT mode(data and

6-46.2.3 Back-to-Back TestingFor purposes of testing the Model DP523 and Model DP524 in a back-to-backconfiguration, a special cable must be construc

6-56.3 Serial ControlIt is possible to command the DP524 via the RS-232 port, J105 on the rear of theunit when the Command/Aux data switch (S101-4) is

6-6Command $18: Return System Status$FB $20 $18 0 $FDThe unit returns the following byte:B7 B6 B5 B4 B3 B2 B1 B00 Dr_lock Sr_lock Test 48kHz 44.1kHz 3

6-7This command will return $FF if the decoder is in Test Tone mode or if thedecoder is in normal mode but does not have an input data clock that it c

6-8Command $42: Set Compression mode$FB $20 $42 data $FDWhere data is as follows:B7 B6 B5 B4 B3 B2 B1 B0000000C1C0C0 and C1 are defined as follows:C1

SECTION 7DP524 SPECIFICATIONSpecifications1Italics = nomenclature for panel markings, switch labels, jumpers, LEDs, etc.All inputs and outputs are TT

7-2Digital Audio OutputsAES/EBU, 3-pin XLR-type, male, balanced , 110 ohms ±5%, 5Vpp nominal.S/PDIF, BNC female connector, unbalanced, 75 ohms ±5%,

7-3GeneralPower Requirements90-260 VAC, 50-60 Hz, 24VADimensions and Weight1- ¾ x 19 x 11- ¾ inches (4.45 x 48.26 x 29.8 cm), 8.5 pounds (3.9 kg), app

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Users' ManualForModel DP524AC-2 / AC-3 Two-ChannelDigital Audio DecoderDolby Laboratories IncorporatedU.S.A. 100 Potrero Avenue, San Francisco,

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TABLE OF CONTENTSSECTION 1 Introduction1.1 Introduction ...

SECTION 6 Interface Specification and Description6.1 DP524 Interface Specifications...

SECTION 1INTRODUCTION1.1 IntroductionThe Dolby Model DP524 is a digital audio decoder unit supporting both Dolby AC-2 and Dolby AC-3 digital audio cod

1-21.2 Features• Automatic algorithm, data rate and sample rate selection• Dolby AC-3 audio coding algorithm from 40 kbps - 384 kbps• Mono, Dual-Mono