Tektronix DPO4000, MSO4000 WaveformData and Record Lengths, Waveform Data Locations and Memory Allocation, Waveform Preamble , S caling Waveform Data

Command Groups
use a swapped byte order where the least significant byte is transferred first. The
byte order is ignored when DATa:WIDthis set to 1.
WaveformData and Record
Lengths
Youcan transfer multiple points for each waveform record. You can transfer a
portion of the waveform or you can transfer the entire record. You can use the
DATa:STARt and DATa:STOP commands to specify the first and last data points
of the waveform record.
When transferring data into the oscilloscope, you must first specify the record
length of the destination waveform record. You do this with the WFMInpre:NR_Pt
command. Next, specify the first data point within the waveform record. For
example, when you set DATa:STARt to 1, data points will be stored starting
with the first point in the record. The oscilloscope will ignore the value set by
DATa:STOP when reading in data. It will stop reading data when there is no data
to read or when it has reached the specified record length.
When transferring data from the oscilloscope, you must specify the first and last
data points in the waveform record. Setting DATa:STARtto 1 and DATa:STOPto
the record length will always return the entire waveform.
Waveform Data Locations
and Memory Allocation
The DATa:SOUrcecommand specifies the waveform source when transferring a
waveform from the oscilloscope. You can only transfer one waveform at a time.
Waveforms sent to the oscilloscope are always stored in one of the reference
memory locations. Use the DATa:DESTinationcommand to specify a reference
memory location.
Waveform Preamble Each waveform you transfer has an associated waveform preamble, which
contains information such as horizontal scale, vertical scale, and the other settings
in effect when the waveform was created. Refer to the individual WFMInpre and
WFMOutpre commands for information.
Scaling Waveform Data Once you transfer the waveform data to the controller, you can convertthe data
points into voltage values for analysis using information from the waveform
preamble.
MSO4000 and DPO4000 Series Programmer Manual 2-63