R&S RTO6, User Manual

Page: 462 / 2677

Data and file management
R&S
®
RTO6
462 User Manual 1801.6687.02 ─ 05
Data conversion:
To convert INT8 or INT16 data to physical quantities, e.g. voltages, use the following
formulas:
ConversionFactor = VerticalScale * VerticalDivisionCount / NofQuantisationLevels
PhysicalQuantity = (Value_ADC * ConversionFactor) + VerticalOffset - (VerticalScale *
VerticalPosition)
The raw values are written in the
*.Wfm.*
file, all other values can be found in the
corresponding header file.
Table 12-2: Example of raw data conversion
INT8 INT16, HD mode
VerticalScale 110 mV/div 50 mV/div
VerticalPosition 1 div 0
VerticalOffset 50 mV 0
NofQuantisationLevels 253 253 * 256
VerticalDivisionCount 10 10
Value_ADC 13 -61
ConversionFactor 0.11 * 10 / 253 = 0.004347826086957 0.05 * 10 / (253 * 256) =
0.0000771986
Voltage (13 * 0.004347826086957) + 0.05 - (1 * 0.11) =
-0.003478260869559 V = 3.478260869559 mV
(-61 * 0.0000771986) + 0 =
-4.7091146 mV
When reloading an exported raw BIN waveform, the waveform position after reload is
not the same as for the exported waveform.
Remote command:
EXPort:WAVeform:RAW
on page 1655
Interleaved x/y
Includes horizontal values in the export data (time or frequency values, depending on
the waveform). X and Y-values are written alternately to the file. If disabled, only Y-val-
ues - mostly voltage values - are written.
Interleaved x/y data cannot be exported as raw values, the "Raw (ADC direct)" option
is not available.
Remote command:
EXPort:WAVeform:INCXvalues
on page 1655
Save to file
Enter the filename to save the waveform to. Double-tap the filename to open the file
selection dialog box.
By default, the filename has the prefix "RefCurves_". You can define a pattern for auto-
matic naming in the "Autonaming" dialog, see
Chapter 4.8.1, "Autonaming" ,
on page 104.
"Save" Saves the waveform as a reference waveform in the selected file.
Save and recall waveform data and results