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Chapter 5 IQ Modulation Output RIGOL
User’s Guide for DG5000
5-5
To Select Code Pattern
When internal modulation is selected, users could select the internal pre-defined or
user-defined code patterns.
Pre-defined PN Sequence Code Pattern
PN sequence (Pseudo-noise Sequence, pseudo random noise sequence) is a periodic
binary sequence approximation. It has some statistic characteristics similar to random
noise and it can be generated and processed repeatedly. The most commonly used PN
sequence is the Longest Linear Feedback Shift Register, that is, m sequence generated
by shift register with linear feedback and its period is relevant to the linear feedback
logic and the initial state of each register. The period of the m sequence generated by
n-level shift register is
1
-
2
n
.
The generator pre-defines four conventional PN sequences. When internal modulation
is selected, press Pattern to select one PN sequence: PN9, PN11, PN15 or PN23,
where 9, 11, 15 and 23 are the orders of the shift registers, and different PN code is
generated based on different linear feedback.
PN9:Q5
⊕
Q9.
PN11: Q9
⊕
Q11.
PN15: Q14
⊕
Q15.
PN23: Q18
⊕
Q23.
Pre-defined Fixed 4 bits Code Pattern
Fixed4 can be used to define a 4-bits repeat sequence code pattern to provide a
continuous data flow.
When internal modulation is selected, you can press Pattern Fixed4, use knob to
change the code pattern. The adjustment range is from 0000 to 1111.
- User’s Guide 1
- Guaranty and Declaration 3
- Safety Requirement 4
- Handling Safety 6
- Safety Terms and Symbols 7
- RIGOL 10
- User’s Guide for DG5000 10
- General Care and Cleaning 12
- Environmental Considerations 13
- DG5000 Series Overview 14
- RIGOL 15
- Document Overview 16
- Chapter 14 Appendix 17
- Contents 18
- Contents RIGOL 19
- RIGOL Contents 20
- Chapter 1 Quick Start 25
- General Inspection 26
- Handle Adjustment 27
- Appearance and Dimensions 28
- Front Panel 29
- RIGOL Chapter 1 Quick Start 30
- Rear Panel 35
- Power on the Generator 38
- User Interface 39
- To Rack Mount the Instrument 41
- Installation Tool 42
- Installation Procedures 43
- To Use the Security Lock 46
- To Use the Built-In Help 47
- To Output Sine Waveform 50
- To Output Square Waveform 53
- Symmetry 54
- =t/T*100% 54
- To Output Pulse Waveform 55
- CH1 Output 56
- CH2 Output 56
- Restore Delay 57
- To Output Noise Waveform 59
- Align Phase 60
- To Enable Arbitrary Waveform 62
- Waveform” 63
- Output Mode 64
- Play Mode 65
- To Select Arbitrary Waveform 66
- Stored Waveform 67
- Volatile Waveform 67
- Programming Guide 70
- Edit Points 71
- Edit Block 73
- To Edit Arbitrary Waveform 75
- Amplitude Modulation (AM) 78
- To Set Modulation Depth 80
- Frequency Modulation (FM) 81
- To Set Frequency Deviation 83
- Phase Modulation (PM) 84
- To Set Phase Deviation 86
- Amplitude Shift Keying (ASK) 87
- To Set ASK Rate 88
- To Set Modulating Amplitude 89
- To Set Modulating Polarity 89
- Frequency Shift Keying (FSK) 90
- To Set Carrier Frequency 91
- To Set FSK Rate 92
- To Set Hop Frequency 92
- Phase Shift Keying (PSK) 93
- To Set PSK Rate 94
- To Set Modulating Phase 95
- Pulse Width Modulation (PWM) 96
- IQ Modulation Overview 100
- To Select IQ Modulation 101
- To Select Code Pattern 103
- User-defined Code Pattern 104
- Save/Read User’s Data 105
- Application of User’s Data 105
- To Set Code Rate 106
- IQ Mapping 107
- User’s Guide for DG5000 109
- To Enable Frequency Sweep 114
- Sweep Type 116
- Log Sweep 117
- Step Sweep 118
- Sweep Time 119
- Return Time 119
- Mark Frequency 119
- Start Hold 120
- End Hold 120
- Sweep Trigger Source 121
- Sweep Trigger Output 122
- Chapter 7 Burst Output 123
- To Enable Burst Mode 124
- Burst Type 124
- Infinite Burst 125
- Gated Burst 126
- Burst Phase 127
- Burst Period 127
- Gated Polarity 127
- Burst Delay 128
- Burst Trigger Source 128
- Burst Trigger Output 129
- Chapter 8 FH Output (Option) 131
- FH Overview 132
- To Enable FH Function 133
- To Select Carrier Waveform 134
- FH Switch 134
- FH Interval 134
- Start Point 135
- Display Type 135
- To Load Map 136
- To Edit Map 137
- To Edit List 138
- To Create List 138
- FH Sequence 139
- To Save FH Map 140
- Chapter 9 Store and Recall 141
- Storage System Overview 142
- To Select File Type 143
- To Select Browser Type 144
- To Save a File 144
- To Recall a File 147
- To Copy a File 147
- To Paste a File 148
- To Delete a File or Folder 148
- To Create a New Folder 149
- Format the Local Disk 149
- Seamlessly Interconnection 150
- Advanced Operation Overview 152
- Channel Setting 153
- Sync Polarity 155
- Output Polarity 155
- Resistance Setting 156
- Range Setting 156
- Attenuation Setting 157
- Enable Freq Hop Function 157
- Channel Coupling 158
- Channel Copy 160
- System Setting 161
- Language 162
- Power On Setting 162
- Restore Default 162
- Display Setting 167
- Beep Setting 168
- Screen Saver Setting 168
- Clock Source Setting 169
- User-defined Shortcut 170
- System Information 170
- Test Calibration 172
- Protocol Setting 180
- To Set the Code Pattern 183
- User Data Editing 184
- Trigger Setting 188
- To Install the Option 189
- To Set GPIB Address 190
- LAN Setting 190
- IP Configure Mode 191
- Network Status 191
- MAC Address 191
- VISA Descriptor 191
- To Set USB Device Type 195
- Chapter 11 Remote Control 197
- Remote Control Via USB 198
- Remote Control Via LAN 200
- Remote Control Via GPIB 203
- Chapter 12 Troubleshooting 205
- Chapter 13 Specifications 209
- Appendix D: Warranty 222
- Index RIGOL 223
- RIGOL Index 224
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