Instructions

Table Of Contents
Waveform Analysis
R&S
®
Scope Rider RTH
96User Manual 1326.1578.02 ─ 15
XML header files contain more information than CSV header files. For analysis, only
Name and Value are needed.
<Prop Name="VerticalScale" Value="0.05" UserValue="0.05" Step="0.001" Default="0.05"
Min="0.001" Max="100" StepDefault="0.001" StepFactor="10" UnitId="77"
UnitName="V/div" BitGroupSize="0" Format="0"></Prop>
<Prop Name="HorizontalScale" Value="1e-07" UserValue="1e-07" Step="1e-09"
Default="1e-07" Min="1e-09" Max="500" StepDefault="1e-09" StepFactor="10"
UnitId="75" UnitName="s/div" BitGroupSize="0" Format="0"></Prop>
Header files contain the following properties:
Value Description
Vertical settings
VerticalScale Vertical scale of the waveform in Volts per division, or other unit / division
VerticalOffset Vertical offset of the waveform in Volts, or other unit
VerticalPosition Vertical position of the waveform in divisions
Horizontal and acquisition settings
HorizontalScale Time scale in seconds per division
HorizontalLeft Horizontal start value of the waveform (time in s)
HorizontalResolutionPP Time between two recorded samples
HorizontalAcquisitionMode Sample, Peak Detect, High Res, Envelope, or Average
HorizontalDecimationFactor At long time bases, if the number of captured samples is higher than the
available record length, decimation takes effect. If the time scale is 5 μs/
div, the decimation factor is 1.
Samples
HorizontalTraceLength Record length, number of recorded waveform samples, which are stored
in the memory
PostSettlingSamples Number of additional samples after the end of the waveform record.
PreSettlingSamples Number of additional samples before the beginning of waveform samples.
They ensure that all measurements can be performed on the reloaded
waveform that could be performed on the original waveform.
4.5.2.2 Waveform Data Files
The waveform data files are indicated by *Wfm.* in the file name. They contain the
actual waveform data, the Y-values of the samples. Mostly, the Y-values are voltages:
Y0; Y1; Y2; Y3; ...
Before and after the waveform data, the instrument writes some presettling and post-
settling samples. The overall number of values in the data file is:
ValuesNumber = PreSettlingSamples + HorizontalTraceLength + PostSettlingSamples
For envelope waveforms, the number of values in the file doubles. Two Y-values for
each sample are written, one for the upper and one for the lower envelope:
Reference Waveforms