Specifications

Command Descriptions
TDS3000, TDS3000B, and TDS3000C Series Programmer Manual
2- 325
WFMPre:YZEro
YZEro specifies the vertical offset of a waveform. YZEro is a value, expressed in
YUNits, used to convert waveform record values to YUNit values using the
following formula (where dl is data levels; curve_in_dl is a data point from
CURVe?):
value_in_units =
((curve_in_dl -- YOFF_in_dl) * YMULT) + YZERO_in_units
The set form of this command stores a value for the reference waveform
specified by the DATa:DESTination command. This value does not affect how
the oscilloscope displays the waveform, but does affect the cursor readouts and
vertical measurements.
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 offset of the waveform specified by the
DATa:SOUrce command, in YUNits, 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
WFMPre:YZEro <NR3>
WFMPre:YZEro?
<NR3> is a value, expressed in YUNits.
WFMPre:<wfm>:YZEro
Group
Syntax
Arguments
Related Commands