Radyne QAM256 Instruções de Operação Página 36
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Rear Panel Interfaces QAM256 Digital Video Modulator and Upconverter
5-4 TM077 - Rev. 4.0
5.5 ASI/Parallel Interface Connections
5.5.1 TX PARALLEL Connector
The RS-422 Transmit Parallel Connector (J1) is a 25-Pin Female D-Sub Connector. The pinouts
are listed in Table 5-3.
5.5.2 REMOTE Connector
The RS-485 Remote Connector (J3) is a 9-Pin Female D-Sub Connector. The pinouts are listed
in Table 5-2.
5.5.3 TX ASI Connector
The Transmit ASI Connector (J4) is a Female BNC Connector.
5.6 ASI and Advanced ASI Interfaces
The QAM256 has two ASI options that apply to different uses. The Normal ASI option interfaces
to data sources that conform to the DVB ASI Specification. The DVB ASI Specification requires
data sources to transmit the ASI/DVB transport stream at a constant data rate and packet gap
with no variation in time from one sync byte to the next.
The Advanced ASI Option is designed to interface with data sources that do not conform to the
DVB ASI Specification. This card will handle transport streams with inconsistent data rates or
packet gaps. The modulator’s data rate must be set greater than the fastest data rate that can be
expected from the data source. When the data is not available at that data rate, the modulator
will output DVB Null Frames (see Table 5-4) until enough data has been received to fill a packet.
In this method, the modulator’s input buffer will not be overrun and the demodulator will not lose
lock due to inconsistent packet delivery.
Table 5-4. DVB Null Packet Description
Null Packet = Sync Byte PID Count Data
Hex Value 47 IFFF 0000 FF - FF
Byte Number 0 1 - 2 3 - 4 5 - 187
- Digital Video Modulator 1
- Warranty Policy 2
- Preface 4
- Table of Contents 6
- TM077 – Rev. 4.0 ix 8
- Introduction 10
- 1-2 TM077 - Rev. 4.0 11
- Installation 12
- 2.2 Removal and Assembly 13
- 2.3 Mounting Considerations 13
- TM077 – Rev. 4.0 2-3 14
- Theory of Operation 15
- 3-2 TM077 - Rev. 4.0 16
- User Interfaces 17
- 4.1.3 Numeric Keypad 18
- 4.2 Parameter Setup 19
- 4.3.1 Main Menus 20
- TM077 – Rev. 4.0 4-5 21
- 4-6 TM077 - Rev. 4.0 22
- TM077 – Rev. 4.0 4-7 23
- 4.5 Connecting the Terminal 24
- 4.6 Terminal Screens 24
- Main Menu Screen: 25
- 4-10 TM077 - Rev. 4.0 26
- TM077 – Rev. 4.0 4-11 27
- 4-12 TM077 - Rev. 4.0 28
- TM077 – Rev. 4.0 4-13 29
- 4-14 TM077 - Rev. 4.0 30
- TM077 – Rev. 4.0 4-15 31
- 4-16 TM077 - Rev. 4.0 32
- Rear Panel Interfaces 33
- 5.3 TX MON Port 34
- 5.4 TX IF Port 34
- TM077 – Rev. 4.0 5-3 35
- 5.5.1 TX PARALLEL Connector 36
- 5.5.2 REMOTE Connector 36
- 5.5.3 TX ASI Connector 36
- 5.8 Optional DVB Interface 37
- 5-6 TM077 - Rev. 4.0 38
- TM077 – Rev. 4.0 5-7 39
- 6.0 Periodic Maintenance 40
- 6-2 TM077 - Rev. 4.0 41
- Technical Specifications 42
- 7.2.1 RF Interface 43
- 7.2.2 Baseband Interface 43
- 7.2.3 Remote Interface 43
- 7.2.4 Physical 43
- TM077 – Rev. 4.0 7-3 44
- Product Options 45
- A-2 TM077 - Rev. 4.0 46
- SNMP MIB 47
- B-2 TM077 – Rev. 4.0 48
- TM077 – Rev. 4.0 B-3 49
- B-4 TM077 – Rev. 4.0 50
- TM077 – Rev. 4.0 B-5 51
- B-6 TM077 – Rev. 4.0 52
- TM077 – Rev. 4.0 B-7 53
- B-8 TM077 – Rev. 4.0 54
- TM077 – Rev. 4.0 B-9 55
- Remote Operations 56
- C.1.2 Protocol Wrapper 57
- TM077 – Rev. 4.0 C-3 58
- 02h = 00000010b 58
- C-4 TM077 – Rev. 4.0 59
- RESPONSE OPCODE DESCRIPTION 59
- Invalid Control Mode 59
- C.1.5 Collision Avoidance 60
- C.1.6 Software Compatibility 61
- C.1.8 RLLP Summary 62
- C-8 TM077 – Rev. 4.0 63
- TM077 – Rev. 4.0 C-9 64
- C-10 TM077 – Rev. 4.0 65
- TM077 – Rev. 4.0 C-11 66
- C-12 TM077 – Rev. 4.0 67
- TM077 – Rev. 4.0 C-13 68
- C-14 TM077 – Rev. 4.0 69
- TM077 – Rev. 4.0 C-15 70
- C-16 TM077 – Rev. 4.0 71
- TM077 – Rev. 4.0 C-17 72
- C-18 TM077 – Rev. 4.0 73
- TM077 – Rev. 4.0 C-19 74
- C-20 TM077 – Rev. 4.0 75
- TM077 – Rev. 4.0 C-21 76
- C-22 TM077 – Rev. 4.0 77
- TM077 – Rev. 4.0 C-23 78
- C-24 TM077 – Rev. 4.0 79
- TM077 – Rev. 4.0 C-25 80
- C-26 TM077 – Rev. 4.0 81
- Glossary 82
- G-2 TM077 – Rev. 4.0 83
- TM077 – Rev. 4.0 84
- G-4 TM077 – Rev. 4.0 85
- G-6 TM077 – Rev. 4.0 87
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