Technical data

:MEASure Commands 20

Keysight InfiniiVision 2000 X-Series Oscilloscopes Programmer's Guide 373

:MEASure:VRMS

(see page 792)

Command Syntax

:MEASure:VRMS [<interval>][,][<type>][,][<source>]

<interval> ::= {CYCLe | DISPlay}

<type> ::= {AC | DC}

<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:VRMS command installs a screen measurement and starts an RMS

value measurement. If the optional source parameter is specified, the current

source is modified.

The <interval> option lets you specify the measurement interval: either an integral

number of cycles, or the full screen. If <interval> is not specified, DISPlay is

implied.

The <type> option lets you choose between a DC RMS measurement and an AC

RMS measurement. If <type> is not specified, DC is implied.

Query Syntax

:MEASure:VRMS? [<interval>][,][<type>][,][<source>]

The :MEASure:VRMS? query measures and outputs the dc RMS value of the

selected waveform. The dc RMS value is measured on an integral number of

periods of the displayed signal. If at least three edges are not present, the

oscilloscope computes the RMS value on all displayed data points.

Return Format

<value> ::= calculated dc RMS value in NR3 format

See Also • "Introduction to :MEASure Commands" on page 340

• ":MEASure:SOURce" on page 361

NOTE

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