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SDM-2020 Satellite Demodulator Revision 4
G.703 Data Interface MN/SDM2020D.IOM
11–2
• ITU -T G.704, Synchronous Frame Structures Used At Primary And Secondary
Hierarchical Levels
• ITU-T G.742, General Considerations On Second Order Multiplex Equipment
• ITU-T G.743, Second Order Digital Multiplex Equipment Operating At
6312 kbps And Using Positive Justification
• ITU-T G.745, Second Order Digital Multiplex Equipment Operating At
8448 kbps And Using Positive/Zero/Negative Justification
• ITU-T G.747, Second Order Digital Multiplex Equipment Operating At
6312 kbps And Multiplexing Three Tributaries At 2048 kbps
• ITU-T G.751, Digital Multiplex Equipments Operating At The Third Order Bit
Rate Of 34,368 kbps And The Fourth Order Bit Rate Of 139,264 kbps And Using
Positive Justification
• ITU-T G.752, Characteristics of Digital Multiplex Equipments Based On A
Second Order Bit Rate Of 6312 kbps And Using Positive Justification
• ITU-T G.753, Third Order Digital Multiplex Equipment Operating At
34,368 kbps And Using Positive/Zero/Negative Justification
• ITU-T G.823, The Control Of Jitter And Wander Within Digital Networks Which
Are Based On The 2048 kbps Hierarchy
• ITU-T G.824, The Control Of Jitter And Wander Within Digital Networks Which
Are Based On The 1544 kbps Hierarchy
• Bellcore SONET STS-1
11.1.2 Description
The G.703 data interface is a plug-in module that inserts into the rear of the SDM-2020
Satellite Demodulator chassis.
It provides physical and electrical connection between
terrestrial data equipment and the internal circuitry of the demodulator. The interface is
designed for full duplex capability and is automatically configured for simplex RX
operation.
The interface operates at the digital hierarchy Mbps of:
• 1.544
• 2.048
• 6.312
• 8.448
• 32.064
• 34.368
- Satellite Demodulato 1
- Installation and O 1
- Errata A 3
- Errata B 5
- Errata C 7
- SDM-2020 9
- Errata D 10
- Customer Support 12
- Table of Contents 13
- Preface MN/SDM2020D.IOM 14
- Figures 18
- Metric Conversion 22
- Trademarks 22
- Installation 24
- Warranty Policy 26
- Limitations of Warranty 26
- Exclusive Remedies 26
- Disclaimer 26
- Chapter 1. INTRODUCTION 27
- Mbps, with maximum 28
- 1.2 Assemblies 30
- 1.3 FAST Options 30
- 1.4.2 Transmit/Receive Data 32
- Chapter 2. INSTALLATION 35
- 2.2 Installation 36
- J3 PARALLEL J4 SERIAL J5 AUX 38
- Chapter 3. EXTERNAL 41
- CONNECTIONS 41
- 3.2 Connections 44
- 3.2.2 Fault Connector (J2) 45
- 3.2.3 Monitor Points (J21) 46
- 3.2.5 AC Power 47
- 3.2.6 Fuse Data 48
- 3.2.7 DC Power (Optional) 48
- 3.2.8 Ground (GND) or Earth 48
- SYSTEM TOPOLOGY (FAST) 49
- CHAPTER 4. FULLY ACCESSIBLE 49
- 4.1.1.1 Activation Procedure 50
- Select Features: 50
- Verify Upgrade 52
- Chapter 5. SPECIFICATION 53
- 5.2 BER Performance 58
- Specification 59
- 5.3 Data Rates 61
- 5.4 Fault Tree 62
- Chapter 6. FRONT PANEL 65
- OPERATION 65
- 6.1.1 Front Panel 66
- 6.1.2 LED Indicators 67
- 6.1.3 Front Panel Keypad 68
- 6.1.4 Menu System 69
- SDM-2020D 70
- MENU TREE 70
- IMPORTANT 105
- RX INTRF Firmware 107
- to set the baud 112
- to execute the change 114
- (Conditional) 116
- 6.1.13 Initial Defaults 122
- (see Note 4) 13 VDC 123
- (see Note 5) Off 123
- (see Note 5) 123
- 6.1.14 (C+N)/N to C/N and E 124
- Conversion 124
- Conversion Chart 125
- 7.2 Description 128
- 7.3 Configuration 130
- 7.3.1 User Interfaces 131
- 7.3.1.3 Auxiliary, J5 134
- Chapter 8. LOW VOLTAGE 137
- DIFFERENTIAL (LVDS) 137
- INTERFACE 137
- 8.1.2 Description 138
- 8.1.3 Configuration 139
- DEMODULATOR 140
- MODULATOR 140
- 8.1.4 User Interfaces 141
- 8.1.4.2 Auxiliary, J5 143
- 9.1.1 Applicable Documents 145
- 9.1.2 Description 146
- 9.1.3 User Interfaces 149
- 10.1.1 Applicable Documents 154
- 10.1.2 Description 154
- 10.1.3 Specifications 154
- 159
- 10.1.4.6 Terrestrial Timing 162
- 10.1.5.2 Faults 165
- 11.1.2 Description 168
- 11.1.3 Specifications 171
- 11.1.5.1 Buffer Size 176
- 11.1.5.2 Frame Structures 176
- 11.1.5.5 Buffer Centering 177
- interfere with 178
- 11.1.7 Test Modes 179
- 11.1.7.1 Interface Loopback 179
- Connectors J3, J4 & J6 180
- 12.1.2 Description 184
- 0.0 V ± 0.5 V 186
- 13.1.2 Description 192
- (see text) 193
- 13.1.3.1 Jumper Selection 195
- 13.1.4 Loopback Connection 197
- 13.1.5 Loop Thru 197
- Appendix A. REMOTE CONTROL 201
- COMMANDS 201
- A.1.2 Start Character 202
- A.1.3 Device Address 202
- A.1.4 End Character 202
- A.1.5 Command/Response 203
- RS-422 Interface 208
- LVDS Interface 209
- ASI/RS-422 Interface 209
- ASI/LVDS Interface 209
- SMPTE-310 Interface 210
- G.703 Interface 210
- ECL_HSSI Interface 211
- A.1.11 Configuration Status 214
- A.1.13 Stored Faults 220
- A.1.16 Data Interfaces 227
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