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442 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide

20 :MEASure Commands

:MEASure:SDEViation

(see page 1138)

Command Syntax

:MEASure:SDEViation [<source>]

<source> ::= {CHANnel<n> | FUNCtion | MATH | WMEMory<r>}

<n> ::= 1-2 or 1-4 (# of analog channels) in NR1 format

<r> ::= 1-2 in NR1 format

The :MEASure:SDEViation command installs a screen measurement and

starts std deviation measurement. If the optional source parameter is

specified, the current source is modified.

Query Syntax

:MEASure:SDEViation? [<source>]

The :MEASure:SDEViation? query measures and outputs the std deviation

of the selected waveform. The oscilloscope computes the std deviation on

all displayed data points.

Return Format

<value> ::= calculated std deviation value in NR3 format

See Also • "Introduction to :MEASure Commands" on page 406

• ":MEASure:VRMS" on page 463

• ":MEASure:SOURce" on page 444

NOTE

This ":MEASure:VRMS DISPlay, AC" command is the preferred syntax for making standard

deviation measurements.

NOTE

This command is not available if the source is FFT (Fast Fourier Transform).

Agilent Technologies InfiniiVision 3000 X-Series Programmer's Guide

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