Command Descriptions
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TDS3000, TDS3000B, and TDS3000C Series Programmer Manual
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 com-
mand.
The query form returns the position of the first sample of the waveform specified
by the DATa:SOUrce command, if that waveform is on or displayed. If that
waveform is not on or displayed, the query fails and the oscilloscope generates
an execution error with event code 2244 (waveform requested is not on).
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 waveform.
If XUNits is “s”, <NR3> is the time of the first sample in this waveform.
WFMPre:<wfm>:XZEro
WFMPre:YMUlt
The set form of this command sets the vertical scale factor of the reference
waveform specified by the DATa:DESTination command, expressed in YUNits
per waveform data point level. For 1 byte waveform data, there are 256 data
point levels; for 2 byte waveform data there are 65536 data point levels.
Note that for a given waveform record, both YMUlt and YZEro have to be a
consistent set; otherwise vertical cursor readouts and vertical measurements may
give incorrect results.
The query form returns the vertical scale factor of the waveform specified by the
DATa:SOUrce command, if that waveform is on or displayed. If that waveform
is not on or displayed, the query fails and the oscilloscope generates an execution
error with event code 2244 (waveform requested is not on).
Waveform
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