Agilent Technologies InfiniiVision 7000A Series, Programmer'S Manual

Page: 323 / 922

Commands by Subsystem
5
Agilent InfiniiVision 7000A Series Oscilloscopes Programmer's Guide 323
:MEASure:FREQuency
(see page 786 )
Command Syntax
:MEASure:FREQuency [<source>]
<source> ::= {<digital channels> | CHANnel<n> | FUNCtion | MATH}
<digital channels> ::= DIGital0,..,DIGital15 for the MSO models
<n> ::= {1 | 2 | 3 | 4} for the four channel oscilloscope models
<n> ::= {1 | 2} for the two channel oscilloscope models
The :MEASure:FREQuency command installs a screen measurement and
starts a frequency measurement. If the optional source parameter is
specified, the current source is modified.
IF the edge on the screen closest to the trigger reference is rising:
THEN frequency = 1/(time at trailing rising edge - time at leading rising
edge)
ELSE frequency = 1/(time at trailing falling edge - time at leading falling
edge)
Query Syntax
:MEASure:FREQuency? [<source>]
The :MEASure:FREQuency? query measures and outputs the frequency of
the cycle on the screen closest to the trigger reference.
Return Format
<source><NL>
<source> ::= frequency in Hertz in NR3 format
See Also • "Introduction to :MEASure Commands" on page 312
• ":MEASure:SOURce" on page 337
• ":MEASure:PERiod" on page 327
Example Code
• "Example Code" on page 338
N O T E
This command is not available if the source is FFT (Fast Fourier Transform).