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SOLH264TX Broadcast Transmitter
H264TX, H264ENGTX, H264ENC
UNCLASSIFIED
Part A - User Guide
DS000091
Rev 1.2 2013-05-02
UNCLASSIFIED
Page 13-94
13. Appendix B-Advanced Chaining
Guide
13.1 About the Terms ‘ASI’ and ‘Chaining’
13.1.1 Asynchronous Serial Interface, ASI
Asynchronous Serial Interface, or ASI, is a streaming data format which often carries an
MPEG Transport Stream (MPEG-TS).
An ASI signal can carry one or multiple SD, HD or audio programs that are already
compressed, not like an uncompressed SD-SDI (270 Mbit/s) or HD-SDI (1.45 Gbit/s).
An ASI signal can be at varying transmission speeds and is completely dependent on the
user's engineering requirements.
Generally, the ASI signal is the final product of video compression, either MPEG2 or MPEG4,
ready for transmission to a transmitter or microwave system or other device. Sometimes it is
also converted to fibre or RF for other types of transmission.
Broadcasters often use ASI to link broadcast devices together.
13.1.2 Chaining
In Cobham, we use the term Chaining when we are linking devices together. This is
because we
may
be using ASI to link them or we may be using a
different
technique.
You can consider the terms Chaining and ASI interchangeable.
13.1.3 SOLH264TX Uses Both Terms
On many Cobham products, you’ll see the term ‘Chaining’ in the software.
On SOLH264TX, the Field Controller Window on the side of the unit has a menu item called
‘ASI’. We did this to make the unit more familiar to our broadcast customers.
However, if you connect our Transmitter Control software to the SOLH264TX, you’ll see the
control is labelled ‘Chaining’. Remember, the terms are interchangeable.
13.2 About Hexadecimal and Decimal PID Numbers
In broadcast environments, PID numbers are generally expressed as decimal numbers.
In some earlier Cobham products we used Hexadecimal numbers for PIDs.
Later Cobham products used in the broadcast environment now use only decimal numbers
when referring to PIDs.
- SOLH264TX Broadcast 1
- Transmitter 1
- 0. Preface 2
- 0.5 Typographic Conventions 3
- 0.6 Symbols 3
- 0.7 Trademarks 4
- 0.8 Related Documents 4
- 0.9 Document History 4
- Contents 5
- H264TX, H264ENGTX, H264ENC 10
- UNCLASSIFIED 10
- Part A - User Guide 10
- 1. Systems Description 11
- 1.2.3 Brief Description 12
- 1.3.2 Understanding MPEG 13
- 1.3.3 Understanding COFDM 14
- 1.4 Features and Benefits 15
- 1.5 Applications 16
- 1.6 Variants and Options 18
- 1.6.3 Accessory Options 19
- 1.6.4 Licensing Options 20
- 1.7 Illustrations 21
- 1.8 Hardware System 25
- 1.9 Software System 26
- 1.9.1 Internal Software 27
- 1.9.2 Control Application 27
- 2.1 General 28
- 2.2.2 Accessory Options 29
- 2.2.3 Licensing Options 30
- 3. Placards and Markings 33
- 3.2.2 Product Placard 34
- 3.2.4 Warranty Void Placard 35
- 3.4.1 Enclosure Colour 35
- 3.4.2 Panel Markings 35
- 4. Cautions and Warnings 36
- 4.4 CE Marking 37
- 5.1 General 38
- 5.4.1 Cancel/Back Button 41
- 5.9.1 Cancel/Back Button 46
- 6. Connectivity 47
- 6.4 Control – SOLH264TX 48
- 6.5 Power – SOLH264ENGTX 49
- 6.6 Signal – SOLH264ENGTX 49
- 6.7 Control – SOLH264ENGTX 50
- 7.1 General 51
- 7.2 Connecting Antennas 51
- 7.3 Downconverter System 52
- 7.4 Upconverter System 52
- 7.6.1 Connecting DC Power 53
- 7.6.2 Connecting AC Power 53
- 7.7.1 Connecting DC Power 54
- 7.7.2 Connecting AC Power 54
- 7.8.1 Cancel/Back Button 54
- 8. Basic Operation 58
- 9. Advanced Operation 65
- 10. Control System 68
- 10.3.4 Enabling Polling 71
- 10.3.5 Configuring Polling 71
- 10.4 Configuring the Radio 80
- 10.6.1 Radio Settings (1) 83
- 10.6.2 Radio Settings Table 84
- 10.6.3 DVB-T Settings (2) 85
- 10.6.4 Power Settings (3) 86
- 10.7.1 Audio Settings 87
- 10.8.1 Video Settings 89
- 11. Care and Maintenance 96
- 11.5 Repairs 97
- 11.6 Technical Support 97
- 12. Appendix A-Glossary 98
- 13.1.2 Chaining 104
- 13.4 What is a PID? 105
- 13.6 About Program Number 106
- 13.11 Setting up Relay Mode 108
- 13.10 About Chaining Modes 108
- Before you Begin 109
- Step 1 – Connect the System 110
- Troubleshooting 111
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