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

20 :MEASure Commands

:MEASure:VRATio

(see page 1138)

Command Syntax

:MEASure:VRATio [<interval>][,][<source1>][,<source2>]

<interval> ::= {CYCLe | DISPlay}

<source1,2> ::= {CHANnel<n> | FUNCtion | MATH | WMEMory<r>}

<n> ::= 1 to (# analog channels) in NR1 format

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

The :MEASure:VRATio command installs a ratio measurement on screen.

Ratio measurements show the ratio of the ACRMS value of source1 to that

of source2, expressed in dB.

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.

Query Syntax

:MEASure:VRATio? [<interval>][<source1>][,<source2>]

The :MEASure:VRATio? query measures and returns the ratio of AC RMS

values of the specified sources expressed as dB.

Return Format

<value> ::= the ratio value in dB in NR3 format

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

• ":MEASure:VRMS" on page 463

• ":MEASure:SOURce" on page 444

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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