Command Descriptions
2−168
TDS200/1000/2000 Series Oscilloscope Programmer Manual
<qstring> is s" or Hz"
WFMPre:XZEro
The set form of this command specifies the position, in XUNits, of
the first sample of the reference waveform specified by the
DATa:DESTination command, relative to the trigger.
The query form returns the position of the first sample of the
waveform specified by the DATa:SOUrce command, if that
waveform is active or displayed.
If that waveform is not active or displayed, the query fails and the
oscilloscope generates an execution error with event code 2244
(waveform requested is not active).
The oscilloscope sets WFMPre:XZEro to zero if the display mode
was XY or if MATH FFT was the DATa:SOUrce when the waveform
was acquired.
NOTE. The oscilloscope uses XZEro when calculating cursor
readouts.
Waveform
WFMPre:XZEro <NR3>
WFMPre:XZEro?
<NR3> is the position, in XUNits, of the first sample in the wave-
form.
Arguments
Group
Syntax
Arguments
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