ComStream DAC700 User manual

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Installation and Operation Manual
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10180 B arnes C anyon R oad • S an D iego , CA 92121 • [phone]
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CRN 01-0479-401
Rev. A 02/95
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DA 700
Installation and Operation Manual
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Digital Audio odec/Multiplexer
Subsystem
PN 01-0479-401
Rev. A 02/95
C om S tream
A Spar Company
10180 B arnes C anyon R oad • S an D iego , C alifornia 92121 • [phone]
© Copyright 1995 ComStream Corporation. A rights reserved.

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NOTICE
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© opyright 1995 omStream orporation
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WARNING
Shock Hazard!
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The DA 700 contains no user-serviceable parts. Do not attempt to service this product yourself.
Any attempt to do so will negate any and all warranties.
Do Not Open The DA 700 Equipment!
Service Only By omStream!
This publication and its contents are proprietary to omStream orporation ( omStream) and are intended solely
for the contractual use of its customers for no other purpose than to install and operate the equipment described
herein. This publication and its contents shall not be used or distributed for any other purpose and/or otherwise
communicated, disclosed, or reproduced, in any way whatsoever, without the prior written consent of
omStream.
omStream does not assume any liability arising out of the application or use of any products, component pans,
circuits, software, or firmware described herein. omStream further does not convey any license under its patent,
trademark, copyright, or common-law rights nor the similar rights of others. omStream further reserves the right
to make any changes in any products, or pans thereof, described herein without notice.
This product contains one or more programs protected under international and U.S. copyright laws. They are
confidential and proprietary to orporate omputer Systems. Inc. (" S"). Their reproduction or disclosure, in
whole or in pan. or the production of derivative works therefrom without the express permission of S is
prohibited. opyright 1994 orporate omputer Systems. Inc. All rights reserved.
This equipment has been tested and found to comply with the limits for a lass A digital device, pursuant to Part
15 of the F Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and radiates radio
frequency energy and. if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference, in which case the user will be required to correct the interference at his own expense.
Gefahrliche Spannung!
Offnen des Gerates und Service nurdurch omStream!
For the proper installation and operation of this equipment and/or all parts thereof, the instructions in this manual
must be strictly and explicitly followed by experienced personnel. All of the contents of this manual must be fully
read and understood prior to installing or operating any of the equipment, or parts thereof. FAILURE TO
OMPLETELY READ AND FULLY UNDERSTAND AND FOLLOW ALL OF THE ONTENTS OF
THIS MANUAL PRIOR TO INSTALLING AND/OR OPERATING THIS EQUIPMENT, OR PARTS
THEREOF, MAY RESULT IN DAMAGE TO THE EQUIPMENT, OR PARTS THEREOF, AND TO
ANY' PERSONS INSTALLING AND/OR V OPERATLNG THE SAME.

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DAC700 Digita Audio Codec/Mutipexer &O
Contents
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Table of Contents
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Preface
Using this Guide
xi
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Warranty Statement
xiii
Return Procedure xiv
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Revision History
xv
ustomer Support
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XV
Chapter 1:
Overview
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Introduction
1-1
Satellite Digital Audio Distribution Network Overview 1-2
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DA 700 Features
1-5
Chapter 2:
Functional Description and Theory of Operation
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Overview
.2-1
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DA 700 hassis .2-2
Front Panel Indicators .2-3
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.2-4
.2-4
.2-6
.2-10
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.2-12
2-13
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.2-14
.2-16
.2-16
Data Interfaces .2-17
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Monitor and ontrol Interface .2-20
Relay/ ontrol Interface
.2-21
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ill
Rev. A 02/95
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Transmission hannel Signal Format .......................................
Proper Signal Discrimination of Narrow Band RF Signals
DA 700 Major Functional Modules
Audio Input Interfaces .......
Audio Output Interfaces .............
Broadcast Data Interface ...........
ISO/MPEG (Musicam) .............................................
ISO/MPEG (Musicam) ompression oncepts
Performance onsiderations .............................

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Contents
DAC700 Digita Audio Codec/Mu tip exer &O
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Audio/Data Encoder
2-22
2-22
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2-22
Unit ontroller 2-23
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lock Generator
2-23
Power Module
2-26
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2-27
2-27
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2-28
2-29
Chapter 3: Installation and Initial Startup
Introduction
3-1
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Overview
3-1
Site Planning and Preparation
3-2
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Location Requirements
3-2
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Mounting the DA 700
3-2
Safety onsiderations
3-3
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External onnections
3-4
3-5
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3-5
3-5
Broadcast Data 3-5
User Data 3-6
M&
3-6
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3-7
3-7
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Initial Power-up
3-9
3-9
Installation heck
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3-11
Firmware Version
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3-11
3-11
3-12
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Rev. A 02/95
iv
Initial onfiguration .........................
Audio Bandwidth onfiguration
User Data onfiguration ...........
Sources for Decoder Input ................................
LB 0 — External Baseband Input Operation
LB 1 — P M Loopback Operation .............
LB 2 — Normal Operation ...........................
Relay/ ontrol
Power ord....
Data Multiplexer .....
Audio/Data Decoder
Analog Output
Analog Input...
AUX/AES ......

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DAC700 Digita Audio Codec/Mu tip exer &O
ontents
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,3-13
,3-13
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3-14
3-15
3-15
Timing Source onfiguration
Chapter 4: Remote Monitor and Control Operation
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,4-1
Overview
,4-1
ommand Syntax
,4-2
ommand Error odes
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,4-3
ommand Summary
.4-4
Detailed ommand Descriptions
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ComStream Packet Protocol Overview
hapter 5:
,5-1
Overview
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,5-1
omStream Packet Protocol Overview
,5-1
Packet Protocol Interface
.5-1
,5-2
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.5-3
omStream Packet Protocol Address Selection
,5-4
Extended Addressing
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.5-4
Packet Protocol ommand Structure
.5-5
,5-6
.5-7
Special Packet ontrol ommands
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omStream Packet Protocol Specifications .5-7
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Maintenance and Troubleshooting
Chapter 6:
Overview
6-1
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Maintenance
6-1
leaning the DA 700
.6-1
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Performance Monitoring and Maintenance ommands
,6-2
Rev. A 02/95
v
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Packet Protocol Messaging
Packet Format and ontent
ontroller Packet ommand Example ........................
omStream Packet Protocol ommunications Modes
Passthrough Mode onfiguration ..................
Encoder/Decoder Ancillary Data Rate onfiguration
User Relay onfiguration ...........................................
Network and hannel Definitions ..............................

ontents DAC700 Digita Audio Codec/Mutipexer &O
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6-4
Fault ondition Descriptions
6-4
Status/Fault Indicator Lights
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6-4
Overload Indicator
6-5
Fault Indicator
6-5
Power Indicator
6-6
onnectors and ables
6-6
General Troubleshooting
6-7
Unit Troubleshooting
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Technical Specifications and Port Information
Chapter 7:
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Audio Performance
7-1
7-2
Available Audio Rates and Bandwidths
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Diagnostics
7-3
7-3
Rear Panel Ports
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Rear Panel Port Mapping 7-3
Analog Input Port 7-3
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Analog Output Port 7-3
AUX/AES Port 7-3
Broadcast Data Port
7-4
User Data Port
7-4
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Passthrough Port
7-4
Relay/ ontrol Port,
7-4
M& Port 7-5
Front Panel LED Status 7-5
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Mechanical (IDU)
7-5
Power
7-6
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Environmental
7-6
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Rev. A 02/95

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DAC700 Digita Audio Codec/Mu tip exer &O
Contents
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Appendix A: Interface Pinouts
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Analog Output Port J 1
A-
Analog Input Port J2.
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A-2
AUX/AES Pott J3
A-3
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Broadcast Data Port J4
A-4
User Data Port J5
A-5
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M& Port J6
A-6
Relay/ ontrol Port J7
A-7
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Appendix B: Abbreviation/Acronym List
Glossary
Index
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List of Figures
Figure 1 -1. Single hannel to Multipoint Audio/Data Satellite Network
1-2
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Figure 1-2. Multichannel to Multipoint Audio/Data Satellite Network
1-4
Figure 1-3. DA 700 Audio odec/Mux Unit
1-5
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.2-2 Figure 2-1. DA 700 Front Panel
.2-2 Figure 2-2. DA 700 Rear Panel
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Figure 2-3. DA 700 Front Panel Indicators
.2-3
Figure 2-4. Multichannel Single Transponder System
.2-10
Figure 2-5. DA 700 hannel Format
.2-11
Figure 2-6. DA 700 Functional Block Diagram .2-14
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Figure 2-7. Audio Input Interfaces
.2-15
Figure 2-8. Audio Output Interfaces
2-16
Figure 2-9. User Data Processing
.2-18
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Rev. A 02/95
vii
1

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ontents DAC700 Digita Audio Codec/Mu tip exer &O
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2-19
Figure 2-10. Data Passthrough Processing
2-20
Figure 2-11. Monitor and ontrol Processing
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2-21
Figure 2-12. ontact Mapping Diagram
2-23
Figure 2-13. lock Generator
2-24
Figure 2-14. TX LK Internal Timing (PLL)
2-25
Figure 2-15. Send Timing.
2-25
Figure 2-16. Receive Timing
2-26
Figure 2-17. AES/EBU Timing Input
Figure 2-18. ISO/MPEG (Musicam) odec DA 700 Block Diagram for LB 0...2-27
Figure 2-19. ISO/MPEG (Musicam) odec DA 700 Block Diagram for LB 1 ...2-28
Figure 2-20. ISO/MPEG (Musicam) odec DA 700 Block Diagram for LB 2...2-29
3-4
Figure 3-1. DA 700 Rear Panel onnectors
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Figure 5-1. Packet Format 5-2
Figure A- 1. DB-9 Male onnector. A-l
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Figure A-2. DB-9 Female onnector
A-2
Figure A-3. DB-15 Female onnector
A-3
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Figure A-4. DB- 15 Female RS-422 onnector
A-4
Figure A-5. DB-9 Female RS-232 onnector
A-5
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Figure A-6. DB-9 Female RS-232 or RS-485 onnector
A-6
Figure A-7. DB-37 Female onnector
A-7
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viii
Rev. A 02/95
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DAC700 Digita Audio Codec/Mu tip exer &O
ontents
List of Tables
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Table 1.
Revision History,
xv
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Table 2-1.
Quality Grades and Bit Rates
2-7
Table 2-2.
Bit Rate and Encode/Decode ycles
.2-9
hannel Identifier and Frequency Allocation ombinations
Table 2-3.
2-13
Timing Source
2-24
Table 2-4.
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Installation Sequence
.3-1 Table 3-1.
.3-8
International ertifying Agencies
Table 3-2.
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.4-2
Error odes and Descriptions Table 4-1.
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.4-3
DA 700 ommand Summary Table 4-2.
.4-4
Alphabetical ommand List Table 4-3.
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.4-16
Factory Default Settings Table 4-4.
.5-6
Packet Protocol EM Query ommand Table 5-1.
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.5-7
RS-485 Device Pinout Specifications Table 5-2.
6-2
Key Performance Montoring and Maintenance ommands Table 6-1.
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6-4
Table 6-2.
Fault onditions
.6-7
DA 700 Unit Troubleshooting Table 6-3.
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.7-2
Available Audio Rates and Bandwidths Table 7-1.
.7-3
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Table 7-2. Rear Panel Port Mapping
.7-5
LED Descriptions
Table 7-3.
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A-l
Table A-l. DB-9 Male onnector
A-2
DB-9 Female onnector
Table A-2.
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A-3
DB-15 Female onnector
Table A-3.
A-4
DB-15 Female RS-422 onnector
Table A-4.
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DB-9 Female RS-232 onnector A-5
Table A-5.
DB-9 Female RS-232 or RS-485 onnector
A-6
Table A-6.
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DB-37 Female onnector A-7
Table A-7.
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ix
Rev. A 02/95