Commands Listed in Alphabetical Order
Examples
WFMINPRE:XZER
O 5.7E-6
, which indicates the trigger occurred 5.7 µs before the
first sample in the waveform.
WFMINPRE:XZE
RO?
might return :WFMINPRE:XZEro –7.5000E-6 indicating
that the trigger occurs 7.5 µs after the first sample in the waveform.
WFMInpre:YMUlt
This command specifies the vertical scale multiplying factor to be used to convert
the incoming data point values being sent to the oscilloscope, from digitizing
levels into the units specified by the
WFMInpre:YUNit command. For one byte
waveform
data, there are 256 digitizing levels. For two byte waveform data there
are 65,536 digitizing levels.
The
WFMI
npre:YMUlt
, WFMInpre:YOFf, and WFMInpre:YZEro values
are used to convert waveform record values to units specified using the
WFMInpre:YUNit command (YUNit units). It uses the following formula (where
dl means digitizing level; curve_in_dl is a data point value in the
CURVe data):
Value in YUNit units = ((curve_in_dl - YOFf) * YMUlt) + YZEro
(See page 2-95, Waveform Transfer Command Group.)
NOTE. For a given waveform record, YMUlt, YOFf, and YZEro have to be a
consistent set, otherwise v ertical cursor readouts and vertical measurements may
give incorrect results.
Gro
up
Waveform Transfer
Syntax
WFMInpre:YMUlt <NR3>
WFMInpre:YMUlt?
Related Commands
DATa:DESTination,
WFMInpre:BYT_Nr,
WFMInpre:YUNit
Arguments
<NR3> is a floating point number that specifies the vertical scale factor per
digitizing level of the incoming waveform points.
Examples
WFMINPRE:YMULT? might return : WFMINPRE:YMULT 40.0000E-3,which(if
YUNit is “V”) indicates that the vertical scale is 40 mV/digitizing level (1V/div
for 8-bit data).
2-956 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual