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SDM-2020 Satellite Demodulator Revision 4
LVDS Data Interface MN/SDM2020D.IOM
8–6
applications, the polarity of signals may be inverted from the Functional Select:
Configuration: Interface menu.
Table 8-2. DVB Interface Connector Pinout, J3 RX OUT
Pin # Signal Function/Name Type Comment
1 Clock A O Demod
2 System GND I/GND Demod,
LVDS Interface - N/A, jumper on GND only
3 Data 7 A(MSB/Serial) O Demod
4 Data 6 A O Demod
5 Data 5 A O Demod
6 Data 4 A O Demod
7 Data 3 A O Demod
8 Data 2 A O Demod
9 Data 1 A O Demod
10 Data 0 A O Demod
11 DVALID A O Demod
12 SYNC A O Demod
13 Cable Shield O Demod
14 Clock B O Demod
15 System GND
I/GND Demod,
LVDS Interface - N/A, jumper on GND only
16 Data 7 B (MSB/Serial) O Demod
17 Data 6 B O Demod
18 Data 5 B O Demod
19 Data 4 B O Demod
20 Data 3 B O Demod
21 Data 2 B O Demod
22 Data 1 B O Demod
23 Data 0 B O Demod
24 DVALID B O Demod
25 SYNC B O Demod
8.1.4.1.2 Connector Pinouts, J4
Note: Table 8-3 is included for reference only. The provided data pertains to the
SDM-2020 Satellite Modulator.
The connector is sub-miniature 25-pin D female, with threaded jack nuts (refer to
Table 8-3 for connector pinouts). All signals for this connector are inputs to the
Modulator, except the signal pair on pins 2 and 15 (for an exception, see Figure 8-1, for
jumper settings).
When used as a serial data port, Data 7 (pins 3 and 16) are the active data pins. For DVB
parallel operation, Data 7 through Data 8 are used.
Signal levels are as defined in TIA/EIA-644. Per TM1449, the differential sense of all
signal pairs is a logic “1” when “A” is positive with respect to “B”. This is the normal
selection in the Functional Select: Configuration: Interface menu. For DBS
- 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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