Contents
Main
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Users' Manual For
Model DP524
AC-2 / AC-3 Two-Channel Digital Audio Decoder
Dolby Laboratories Incorporated
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TABLE OF CONTENTS
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SECTION 1 INTRODUCTION
1.1 Introduction
1.3 Dolby AC-3 and AC-2
1.4 Data Rates, Sample Rates and Channels
1.5 Regulatory Notices
FCC
UL
UK
1-5
IEC NOTICES
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SECTION 2 APPLICATIONS
2.1 Cable
2.2 Telecommunications
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SECTION 3 PRE-INSTALLATION
3.1 Unpacking
3.2 Inspection
3.2.1 Claims for Shipping Damage
3.3 Fusing Information
Main Fuse
3.4 Configuring Jumper Settings
Note
handles. These do not need to be removed.
S101
DP524 MOTHERBOARD
1
J103
J105
3.5 Configuring the Rear Panel DIP Switch S101
3.5.1 Switch nos. 1, 7 & 8 - Test Tone
3.5.2 Switch nos. 2, 5 & 6 Software Download
3.5.3 Switch no. 3 - Digital Output Format Selection
3.5.4 Switch nos. 4, 5 & 6 - Command/Aux Data
SECTION 4 INSTALLATION
4.1 Mounting
4.2 Audio Connections
4.2.1 S/PDIF Output - J102
4.2.2 AES/EBU Output - J101
4.2.3 Analog Outputs - J106/7
4.3 Data, Status, and Remote Control Connections
4.3.1 Encoded Data In & Timing - J103
4.3.2 RS-232 (J105)
4.3.3 RS-422 (J106)
4.3.4 Parallel Status and Control (J104)
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5.1 Front Panel Status Indicators
5.2 Rear Panel Level Controls
5.3 Test Tone Level
5.4 Software Downloading Procedure
SECTION 6 INTERFACE SPECIFICATION AND DESCRIPTION
6.1 DP524 Interface Specifications
AES/EBU Digital Audio Output, J101
S/PDIF Digital Audio Output, J102
Encoded Data In and Timing, J103, 37-pin D-connector:
6-2
Status / Control, J104, 25-pin D-connector:
RS-232 Port, J105
Analog Audio Input, J106 & J107
XLR-type connectors
6.2 RS-449 Interface Description
6.2.1 Functional Description
6.2.2 Interface Timing
6.2.3 Back-to-Back Testing
6.3 Serial Control
6.3.1 System related commands
Command $14: Enable/Disable Test Tone
Command $18: Return System Status
Command $19: Return System Contents
Command $1A: Return Current Algorithm
Command $1B: Return Current bitrate.
6.3.2 AC-3 Related commands
Command $40: High Level Dynamic Range control
Command $41: Low Level Dynamic Range control
Command $42: Set Compression mode
SECTION 7 DP524 SPECIFICATION
Specifications
7-2
7-3
General