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Appendix B: Automatic Measurements Reference
CSA8000B & TDS8000B User Manual
B-7
Table B- 1: Pulse Measurements — Amplitude (cont.)
Name Definition
Peak-to-Peak Noise The maximum range of the wavef orm amplitude variance s ampled within a fixed width vertical
slice located at the center of the measurement region.
If enabled, measurement gates constrain the measurement region to the area between the Start
Gate (G1) and Stop Gate (G2). See To Localize a Measurement on page 3--83.
This measurement requires the use of a waveform database. When this measurement is turned
on, it will automat ically set the measurement system to use a waveform database if available.
See Use a Waveform Database on page B--69.
For best results with this measurement. optimize the vertical resolution before taking this
measurement. See To Optimize the Vertical Resolution on page B--69.
Pk-Pk The absolute difference between the maximum and minimum amplitude values of the waveform
in the measurement region. See example on page B--63.
If enabled, measurement gates constrain the measurement region to the area between the Start
Gate (G1) and Stop Gate (G2).
For best results with this measurement, optimize the vertical resolution before taking this
measurement. See To Optimize the Vertical Resolution on page B--69.
RMS The true root-mean-square value of t he wavef orm over the measurement region.
If enabled, measurement gates constrain the measurement region to the area between the Start
Gate (G1) and Stop Gate (G2).
For best results with this measurement, optimize the vertical resolution before taking this
measurement. See To Optimize the Vertical Resolution on page B--69.
RMS Noise One standard deviation of the waveform amplitude variance, sampled within a fixed-width
vertical sl ice l ocated at the center of the measurement region.
If enabled, measurement gates constrain the measurement region to the area between the Start
Gate (G1) and Stop Gate (G2).
This measurement requires the use of a waveform database. When this measurement is turned
on, it will automat ically set the measurement system to use a waveform database if available.
For best results with this measurement, optimize the vertical resolution before taking this
measurement. See To Optimize the Vertical Resolution on page B--69.
Signal-to-Noise Ratio The ratio of t he signal amplit ude to the noise level. The noi se level is defined as one standard
deviation of the wavef orm amplitude variance withi n a fix ed width verti cal slice located at the
center of the measurement region.
If enabled, measurement gates constrain the measurement region to the area between the Start
Gate (G1) and Stop Gate (G2).
This measurement requires the use of a waveform database. When this measurement is turned
on, it will automat ically set the measurement system to use a waveform database if available.