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:MEASure Commands 24

Keysight InfiniiVision 4000 X-Series Oscilloscopes Programmer's Guide 611

:MEASure:RISetime

(see page 1610)

Command Syntax

:MEASure:RISetime [<source>]

<source> ::= {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:RISetime command installs a screen measurement and starts a

rise-time measurement. If the optional source parameter is specified, the current

source is modified.

Query Syntax

:MEASure:RISetime? [<source>]

The :MEASure:RISetime? query measures and outputs the rise time of the

displayed rising (positive-going) edge closest to the timebase reference. For

maximum measurement accuracy, set the sweep speed as fast as possible while

leaving the leading edge of the waveform on the display. The rise time is

determined by measuring the time at the lower threshold of the rising edge and

the time at the upper threshold of the rising edge, then calculating the rise time

with the following formula:

rise time = time at upper threshold - time at lower threshold

Return Format

<value> ::= rise time in seconds in NR3 format

See Also • "Introduction to :MEASure Commands" on page 568

• ":MEASure:SOURce" on page 615

• ":MEASure:FALLtime" on page 590

• ":MEASure:SLEWrate" on page 614

NOTE

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

Keysight Technologies InfiniiVision 4000 X Series User Manual

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