Agilent Technologies InfiniiVision 3000 X-Series

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><NL>
<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).