User Guide

Command Descriptions

WFMPre:<wfm>

:WFId?

Same as WFMPre:WFId, except that <wfm> speciﬁes the source waveform

instead of DATa:SOUrce.

WFMPre:XINcr

The set form of this command spe ci ﬁes the interval (seconds per point for nonFFT,

Hertz per point for FFT) between samples of the reference waveform speciﬁed by

the DATa:DESTination command. The oscilloscope uses this value to calculate

the seconds/division or Hertz/division units shown in the status bar and cursor

readouts when displaying a reference waveform.

The query form returns the interval between samples of the waveform speciﬁ ed

by the DATa:SOUrce command, if that waveform is active or displayed. If

that wav

eform is inactive or not displayed, the query fails and the oscilloscope

generates an execution error with event code 2244 (waveform requested is not

active).

NOTE. For waveform records acquire d in Peak Detect mode, even though there is

a pair of samples for each conceptual time period, the XINcr is such that (XIN cr *

recl) = the total time over which the data was collected.

Grou

Waveform

Syntax

WFMPre:XINcr <NR3>

WFMPre:XINcr?

Arguments

<NR3> is the interval between points in the waveform record, in the units speciﬁed

by WFMPre:XUNit. Note that at some fast sweeps, some points in the waveform

record are produced by interpolation.

Examples

DATa:SOUrce CH1; WFMPRE:XINCR? might return WFMPRE:XINCR 2.0E-6

WFMPre:<wfm>:XINcr

Same as WFMPre:XINcr, except that <wfm> speciﬁes the source/destination

waveform instead of DATa:SOUrce and DATa:DESTINATION.

For set commands, if <wfm> is not a reference waveform, the oscilloscope

generates error 2241.

TDS200, TDS1000/2000, TDS1000B/2000B, TDS2000C, TPS2000 Programmer 2-189