Command Descriptions
2- 256
TDS200, TDS1000/2000, TDS1000B/2000B, TPS2000 Programmer
An example of unknown vertical scaling is a math waveform of
CH1+CH2 where CH1 ve rtical scaling is different from CH2 vertical
scaling. In this case, WFMPre:YUNit? returns U. (Does not apply to
the TPS2000 seri es.)
WFMPre:YOFf
YOFf is a value, expressed in digitizer levels, used to convert
waveform record values to YUNit values using the following
formula (where dl is digitizer levels):
value_in_YUNits =
((curve_in_dl – YOFF_in_dl) * YMUlt) + YZERO_in_YUNits
The set form of this com mand stores a val ue 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.
The query form returns a value for the waveform specified by the
DATa:SOUrce command, in digitizer levels, 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 requeste d is not a ctive).
Waveform
WFMPre:YOFf <NR3>
WFMPre:YOFf?
<NR3> is a value expressed in digitizing levels.
Group
Syntax
Arguments
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