Agilent Technologies N2781A Guía de usuario Pagina 178
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178 Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
13 Measurements
The mean is calculated as follows:
where:
• x = the mean.
• N = the number of measurements taken.
• x
i
= the ith measurement result.
The standard deviation is calculated as follows:
where:
• σ = the standard deviation.
• N = the number of measurements taken.
• x
i
= the ith measurement result.
• x = the mean.
-2σ
bZVc
-1σ 1σ
2σ
+-#(
-3σ
.*#)
..#,
% 3σ
x
¯
=
∑
i=1
N
x
i
N
σ =
∑
i=1
N
(
x
i
− x
¯
)
2
N
- Agilent InfiniiVision 1
- 2000 X-Series 1
- Oscilloscopes 1
- In This Guide 5
- Contents 7
- Getting Started 19
- 1 Getting Started 20
- Getting Started 1 21
- Power-On the Oscilloscope 23
- Input a Waveform 25
- Use Auto Scale 26
- Compensate Passive Probes 27
- Perfectly compensated 28
- Over compensated 28
- Under compensated 28
- Quick Help 40
- Horizontal Controls 43
- 2 Horizontal Controls 44
- XY Time Mode 48
- To navigate time 53
- To navigate segments 53
- Vertical Controls 55
- 3 Vertical Controls 56
- To adjust the vertical scale 57
- To specify channel coupling 57
- To specify bandwidth limiting 58
- To invert a waveform 59
- To specify the channel units 60
- To specify the probe skew 61
- Math Waveforms 63
- 4 Math Waveforms 64
- Multiply 65
- Add or Subtract 66
- FFT Measurement 67
- FFT Measurement Hints 71
- FFT Units 72
- FFT DC Value 72
- FFT Aliasing 72
- FFT Spectral Leakage 74
- Reference Waveforms 75
- 5 Reference Waveforms 76
- Digital Channels 79
- 6 Digital Channels 80
- Pod Ground 81
- TTL +1.4 V 87
- CMOS +2.5 V 87
- ECL –1.3 V 87
- Input Impedance 92
- Probe Grounding 94
- Best Probing Practices 96
- Digital Channels 6 97
- Oscilloscopes Service Guide 97
- Display Settings 99
- 7 Display Settings 100
- To set or clear persistence 101
- To clear the display 102
- To select the grid type 102
- To adjust the grid intensity 103
- To freeze the display 103
- 8 Labels 106
- To define a new label 107
- Label List Management 109
- Triggers 111
- Adjusting the Trigger Level 112
- Forcing a Trigger 113
- Edge Trigger 113
- 9 Triggers 114
- Pattern Trigger 116
- Hex Bus Pattern Trigger 118
- Pulse Width Trigger 119
- Video Trigger 121
- Provide Correct Matching 123
- Alternate Triggering 125
- To trigger on all sync pulses 126
- Triggers 9 131
- Trigger Mode/Coupling 133
- 10 Trigger Mode/Coupling 134
- Oscilloscope triggers here 138
- Acquisition Control 141
- 11 Acquisition Control 142
- Sampling Theory 143
- Aliasing 143
- Oscilloscope Rise Time 145
- Memory Depth and Sample Rate 147
- Normal Acquisition Mode 148
- Peak Detect Acquisition Mode 148
- Averaging Acquisition Mode 151
- Acquiring to Segmented Memory 153
- Navigating Segments 155
- Progress indicator 155
- Sample rate 155
- Segmented Memory Re-Arm Time 156
- To make cursor measurements 158
- 12 Cursors 160
- Cursor Examples 161
- Cursors 12 163
- Measurements 167
- 13 Measurements 168
- Measurements Summary 169
- Snapshot All 171
- Peak-Peak 172
- Amplitude 172
- Overshoot 174
- Preshoot 175
- Time Measurements 179
- Frequency 180
- Burst Width 181
- Duty Cycle 181
- Rise Time 182
- Fall Time 182
- Source 1 Period 183
- Measurement Thresholds 184
- Absolute threshold hints 185
- Mask Testing 187
- 14 Mask Testing 188
- Mask Test Setup Options 189
- Mask Testing 14 191
- Mask Statistics 192
- Region 1 194
- Region 2 194
- Building a Mask File 196
- How is mask testing done? 198
- Waveform Generator 199
- 15 Waveform Generator 200
- To save setup files 207
- To save ALB data files 209
- Length Control 211
- Data File Format Save Times 212
- BIN, ALB fastest 212
- ASCII XY medium 212
- CSV slowest 212
- To save masks 213
- To navigate storage locations 214
- To enter file names 214
- To recall setup files 215
- To recall mask files 216
- Performing a Secure Erase 217
- Print (Screens) 219
- 17 Print (Screens) 220
- To specify the print options 221
- To specify the palette option 222
- Utility Settings 223
- 18 Utility Settings 224
- To establish a LAN connection 225
- File Explorer 227
- To set up the screen saver 230
- To set AutoScale preferences 231
- Performing Service Tasks 233
- To perform user calibration 234
- To perform hardware self test 236
- To clean the oscilloscope 237
- To contact Agilent 237
- To return the instrument 237
- Web Interface 241
- Accessing the Web Interface 242
- Browser Web Control 243
- Real Scope Remote Front Panel 244
- Simple Remote Front Panel 245
- 19 Web Interface 246
- Save/Recall 247
- Get Image 249
- Identification Function 250
- Instrument Utilities 251
- Setting a Password 252
- Configure 253
- Modify Configuration 253
- Reference 255
- 20 Reference 256
- Environmental Conditions 257
- Passive Probes 258
- Differential Probes 259
- Current Probes 259
- Accessories Available 260
- Licensed Options Available 261
- Other Options Available 262
- Upgrading to an MSO 262
- Binary Data in MATLAB 263
- Binary Header Format 264
- Reference 20 265
- Examples of Binary Files 266
- CSV and ASCII XY files 269
- Acknowledgements 271
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