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SDM-2020 Satellite Demodulator Revision 4
RS-422 Data Interface MN/SDM2020D.IOM
7–6
Table 7-2. DVB Interface Connector Pinout, J3
Pin # Signal Function/Name Type Comment
1 Clock A I/O Mod/Demod
2 System GND/REFCLKB
O/GND Mod/Demod
Jumper selectable
SCT for Modulator
3 Data 7 A(MSB/Serial) I/O Mod/Demod
4 Data 6 A I/O Mod/Demod
5 Data 5 A I/O Mod/Demod
6 Data 4 A I/O Mod/Demod
7 Data 3 A I/O Mod/Demod
8 Data 2 A I/O Mod/Demod
9 Data 1 A I/O Mod/Demod
10 Data 0 A I/O Mod/Demod
11 DVALID A I/O Mod/Demod
12 SYNC A I/O Mod/Demod
13 Cable Shield I/O Mod/Demod
14 Clock B I/O Mod/Demod
15 System GND/REFCLKA
O/GND Mod/Demod
Jumper selectable
SCT for Modulator
16 Data 7 B (MSB/Serial) I/O Mod/Demod
17 Data 6 B I/O Mod/Demod
18 Data 5 B I/O Mod/Demod
19 Data 4 B I/O Mod/Demod
20 Data 3 B I/O Mod/Demod
21 Data 2 B I/O Mod/Demod
22 Data 1 B I/O Mod/Demod
23 Data 0 B I/O Mod/Demod
24 DVALID B I/O Mod/Demod
25 SYNC B I/O Mod/Demod
7.3.1.2 Serial, J4, DB25 Female (EIA-530 Serial Data Interface)
This interface has no provision for SYNC or DVALID signals. If framing is desired, a
sync byte (47 hex) is embedded into the data stream every 188 or 204 bytes, as selected
in the Demodulator configuration.
The Demodulator detects the sync byte and formats the
serial interface data into a standard, error-protected 204-byte packet.
- 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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