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430 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide

20 :MEASure Commands

:MEASure:OVERshoot

(see page 1138)

Command Syntax

:MEASure:OVERshoot [<source>]

<source> ::= {CHANnel<n> | FUNCtion | MATH | WMEMory<r>}

<n> ::= 1 to (# analog channels) in NR1 format

<r> ::= 1-2 in NR1 format

The :MEASure:OVERshoot command installs a screen measurement and

starts an overshoot measurement. If the optional source parameter is

specified, the current source is modified.

Query Syntax

:MEASure:OVERshoot? [<source>]

The :MEASure:OVERshoot? query measures and returns the overshoot of

the edge closest to the trigger reference, displayed on the screen. The

method used to determine overshoot is to make three different vertical

value measurements: Vtop, Vbase, and either Vmax or Vmin, depending on

whether the edge is rising or falling.

For a rising edge:

overshoot = ((Vmax-Vtop) / (Vtop-Vbase)) x 100

For a falling edge:

overshoot = ((Vbase-Vmin) / (Vtop-Vbase)) x 100

Vtop and Vbase are taken from the normal histogram of all waveform

vertical values. The extremum of Vmax or Vmin is taken from the

waveform interval right after the chosen edge, halfway to the next edge.

This more restricted definition is used instead of the normal one, because

it is conceivable that a signal may have more preshoot than overshoot, and

the normal extremum would then be dominated by the preshoot of the

following edge.

Return Format

<overshoot>::= the percent of the overshoot of the selected waveform in

NR3 format

See Also • "Introduction to :MEASure Commands" on page 406

• ":MEASure:PREShoot" on page 436

• ":MEASure:SOURce" on page 444

• ":MEASure:VMAX" on page 459

NOTE

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

Agilent Technologies InfiniiVision 3000 X-Series Programmer's Guide

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