ComStream DAC700 Manuals

Manuals and User Guides for ComStream DAC700. We have 1 ComStream DAC700 manual available for free PDF download: Installation And Operation Manual

ComStream DAC700 Installation And Operation Manual (133 pages)

Digital Audio Codec/Multiplexer Subsystem

Brand: ComStream | Category: Multiplexer | Size: 6.65 MB

Table of Contents
4
Using this Guide
12
Warranty Statement
14
Return Procedure
15
Revision History
16
Customer Support
16
Table 1. Revision History
16
Overview
19
Satellite Digital Audio Distribution Network Overview
19
DAC700 Features
22
Overview
24
Functional Description and Theory of Operation
25
DAC700 Chassis
25
Front Panel Indicators
25
ISO MPEG (Musicam)
25
Figure 2-2. DAC700 Rear Panel
25
Figure 2-3. DAC700 Front Panel Indicators
26
ISO MPEG (Musicam) Compression Concepts
27
Performance Considerations
29
Table 2-1. Quality Grades and Bit Rates
30
Table 2-2. Bit Rate and Encode Decode Cycles
32
Transmission Channel Signal Format
33
Figure 2-4. Multichannel Single Transponder System
33
Figure 2-5. DAC700 Channel Format
34
Proper Signal Discrimination of Narrow Band RF Signals
35
DAC700 Major Functional Modules
36
Audio Input Interfaces
36
Audio Output Interfaces
36
Broadcast Data Interface
36
Figure 2-6. DAC700 Functional Block Diagram
37
Figure 2-7. Audio Input Interfaces
38
Figure 2-8. Audio Output Interfaces
39
Data Interfaces
40
Figure 2-9. User Data Processing
41
Relay Control Interface
44
Audio Data Encoder
45
Data Multiplexer
45
Audio Data Decoder
45
Unit Controller
46
Clock Generator
46
Table 2-4. Timing Source
47
Power Module
49
Sources for Decoder Input
50
LB 0 - External Baseband Input Operation
50
LB 1 - PCM Loopback Operation
51
LB 2 - Normal Operation
52
Hapter 3: Installation and Initial Startup
54
Overview
54
Table 3-1. Installation Sequence
54
Site Planning and Preparation
55
Location Requirements
55
Mounting the DAC700
55
Safety Considerations
56
External Connections
57
Analog Output
58
Analog Input
58
Aux Aes
58
Broadcast Data
58
User Data
59
M&C
59
Relay Control
60
Power Cord
60
Firmware Version
64
Audio Bandwidth Configuration
64
User Data Configuration
65
Passthrough Mode Configuration
66
Encoder Decoder Ancillary Data Rate Configuration
66
User Relay Configuration
67
Network and Channel Definitions
68
Timing Source Configuration
68
Command Syntax
70
Command Error Codes
71
Table 4-1. Error Codes and Descriptions
71
Command Summary
72
Table 4-2. DAC700 Command Summary
72
Detailed Command Descriptions
73
Table 4-3. Alphabetical Command List
74
Comstream Packet Protocol Overview
86
Overview ,5-1
86
Packet Protocol Interface
86
Packet Protocol Messaging
86
Packet Format and Content
87
Comstream Packet Protocol Address Selection
88
Extended Addressing
89
Packet Protocol Command Structure
89
Controller Packet Command Example
90
Comstream Packet Protocol Communications Modes
91
Special Packet Control Commands
92
Comstream Packet Protocol Specifications
92
Overview
94
Maintenance
94
Cleaning the DAC700
94
Performance Monitoring and Maintenance Commands
95
Table 6-1. Key Performance Montoring and Maintenance Commands
96
Fault Condition Descriptions
97
Overload Indicator
97
Fault Indicator
98
Power Indicator
98
Connectors and Cables
99
General Troubleshooting
99
Unit Troubleshooting
100
Audio Performance
102
Available Audio Rates and Bandwidths
103
Table 7-1. Available Audio Rates and Bandwidths
103
Diagnostics
104
Rear Panel Ports
104
Rear Panel Port Mapping
104
Analog Input Port
104
Analog Output Port
104
AUX AES Port
104
Table 7-2. Rear Panel Port Mapping
104
Broadcast Data Port
105
User Data Port
105
Passthrough Port
105
Relay Control Port
105
M&C Port
106
Front Panel LED Status
106
Mechanical (IDU)
106
Power
106
Table 7-3. LED Descriptions
106
Environmental
107
Analog Output Port J
108
Broadcast Data Port J4
111
User Data Port J5
112
M&C Port J6
113
Relay Control Port J7
114

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ComStream DAC700 Installation And Operation Manual (133 pages)

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