Agilent Technologies InfiniiVision 6000 Series Manual de Serviço descarregar pdf (Página 335)

100

101

Commands by Subsystem 5

Agilent InfiniiVision 6000 Series Oscilloscopes Programmer's Guide 335

:MEASure:FREQuency

(see page 798)

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}forthefour 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> ::= frequency in Hertz in NR3 format

See Also • "Introduction to :MEASure Commands" on page 324

• ":MEASure:SOURce" on page 349

• ":MEASure:PERiod" on page 339

Example Code • "Example Code" on page 350

NOTE

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

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