Agilent Technologies InfiniiVision 3000 Programmer's Manual page 389

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Table of Contents

Measurement Setup

To make a measurement, the portion of the waveform required for that

measurement must be displayed on the oscilloscope screen.

Measurement Type

period, duty cycle, or frequency

Measurement Error

If a measurement cannot be made (typically because the proper portion of

the waveform is not displayed), the value +9.9E+37 is returned for that

measurement.

Making Measurements

If more than one waveform, edge, or pulse is displayed, time

measurements are made on the portion of the displayed waveform closest

to the trigger reference (left, center, or right).

When making measurements in the zoomed (delayed) time base mode

(:TIMebase:MODE WINDow), the oscilloscope will attempt to make the

measurement inside the zoomed sweep window. If the measurement is an

average and there are not three edges, the oscilloscope will revert to the

mode of making the measurement at the start of the main sweep.

When the command form is used, the measurement result is displayed on

the instrument. When the query form of these measurements is used, the

measurement is made one time, and the measurement result is returned

over the bus.

Measurements are made on the displayed waveforms specified by the

:MEASure:SOURce command. The MATH source is an alias for the

FUNCtion source.

Not all measurements are available on the digital channels or FFT (Fast

Fourier Transform).

Reporting the Setup

Use the :MEASure? query to obtain setup information for the MEASure

subsystem. (Currently, this is only :MEASure:SOURce.)

Return Format

Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide

:MEASure Commands

Portion of waveform that must be displayed

at least one complete cycle

the entire pulse

rising edge, top and bottom of pulse

falling edge, top and bottom of pulse