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:MEASure Commands 22

Keysight InfiniiVision 3000T X-Series Oscilloscopes Programmer's Guide 517

:MEASure:VRATio

(see page 1276)

Command Syntax

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

<interval> ::= {CYCLe | DISPlay}

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

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

<m> ::= 1 to (# math functions) in NR1 format

<r> ::= 1 to (# ref waveforms) 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 458

• ":MEASure:VRMS" on page 518

• ":MEASure:SOURce" on page 499

NOTE

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

Keysight Technologies InfiniiVision 3000T X Series User Manual

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