Measurements
14
Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
189
The N Cycles measurement interval variation measures the value on an
integral number of periods of the displayed signal. If less than three edges
are present, the measurement shows "No edges".
The X cursors show the interval of the waveform being measured.
AC RMS
AC RMS is the root- mean- square value of the waveform, with the DC
component removed. It is useful, for example, for measuring power supply
noise.
The N Cycles measurement interval measures the value on an integral
number of periods of the displayed signal. If less than three edges are
present, the measurement shows "No edges".
The X cursors show the interval of the waveform being measured.
The Full Screen (Std Deviation) measurement interval variation is an RMS
measurement across the full screen with the DC component removed. It
shows the standard deviation of the displayed voltage values.
The standard deviation of a measurement is the amount that a
measurement varies from the mean value. The Mean value of a
measurement is the statistical average of the measurement.
The following figure graphically shows the mean and standard deviation.
Standard deviation is represented by the Greek letter sigma:
σ
. For a
Gaussian distribution, two sigma (± 1
σ
) from the mean, is where 68.3
percent of the measurement results reside. Six sigma (± 3
σ
) from is where
99.7 percent of the measurement results reside.
Содержание 2000 X-Series
Страница 1: ...s1 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide ...
Страница 20: ...20 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide ...
Страница 44: ...44 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 1 Getting Started ...
Страница 58: ...58 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 2 Horizontal Controls ...
Страница 66: ...66 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 3 Vertical Controls ...
Страница 80: ...80 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 4 Math Waveforms ...
Страница 104: ...104 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 6 Digital Channels ...
Страница 110: ...110 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 7 Serial Decode ...
Страница 116: ...116 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 8 Display Settings ...
Страница 152: ...152 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 11 Trigger Mode Coupling ...
Страница 178: ...178 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 13 Cursors ...
Страница 214: ...214 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 16 Digital Voltmeter ...
Страница 226: ...226 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 17 Waveform Generator ...
Страница 238: ...238 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 18 Save Recall Setups Screens Data ...
Страница 244: ...244 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 19 Print Screens ...
Страница 280: ...280 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 21 Web Interface ...
Страница 334: ...334 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide 24 I2C SPI Triggering and Serial Decode ...
Страница 352: ...352 Agilent InfiniiVision 2000 X Series Oscilloscopes User s Guide Index ...