Keysight Technologies InfiniiVision 4000 X Series

634 Keysight InfiniiVision 4000 X-Series Oscilloscopes Programmer's Guide
24 :MEASure Commands
:MEASure:VRATio
(see page 1610)
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><NL>
<value> ::= the ratio value in dB in NR3 format
See Also • "Introduction to :MEASure Commands" on page 568
• ":MEASure:VRMS" on page 635
• ":MEASure:SOURce" on page 615
NOTE
This command is not available if the source is FFT (Fast Fourier Transform).