App-29
IM DL850E-01EN
Appendix
Description of Parameters in Analysis Information
//YOKOGAWA ASCII FILE FORMAT A line that starts with “//” is a comment line.
$PublicInfo A label that indicates common information.
A label always starts with a dollar ($) mark.
The character code of the dollar mark is 0x24.
FormatVersion Version number of this piece of analysis information
Model Model of the measuring instrument that generated the file
Endian Big or Little. All files generated by the DL850/DL850V are big endian.
Trace Internal structure of the waveform data Trace or Block. All files generated by the
DL850/DL850V are Trace.
GroupNumber Total number of groups in the analysis information
TraceTotalNumber Number of traces that this data file contains
DataOffset How many bytes into the file where binary data begins
$Group A label indicating the beginning of group information
TraceNumber Number of traces in the relevant group
BlockNumber Number of history entries
TraceName Trace label of each trace
BlockSize Number of data points in the block corresponding to the trace name
VResolution Y-axis conversion coefficient of each trace
VOffset Y-axis conversion offset of each trace
The Y-axis value (vertical value) can be determined using the following conversion
formula.
Y-axis value = VResolution × binary data + VOffset
VDataType Data type of each trace (details provided separately)
VUnit Y-axis unit
VPlusOverData,
VMinusOverData
(Reserved)
VIllegalData Indicates illegal data when an illegal calculation is performed (such as dividing by 0)
or hidden code for preventing the data from being displayed on the screen
VMaxData, VMinData Maximum and minimum values that data may take on in this block of each trace
HResolution, HOffset Coefficient and offset of time-axis conversion of each trace
Time-axis value = HResolution × (data number – 1) + HOffset
HUnit Time-axis unit
Date Date of the first (oldest) history number
Time Time of the first (oldest) history number
$PublicInfo
DisplayPointNo. How many points into the waveform data where measurement start point begins
ModelVersion Firmware version number
StartOffset1 Number of phase difference points per trace (history number at the end)
DateTime1 Time reference time for each history entry (trigger time) (history number at the
end)
DataEnd End of information
Data Type Expression (VDataType)
Type of waveform data stored in a file is indicated by the VDataType field
VDataType is a 3-character text string. The definition of each character is provided below.
3rd digit: Number of bytes per
data value
2nd digit: S: Signed
U: Unsigned
1st digit: I: Integer
F: Float
However, for bit data only
three digits consisting of
B+(2-digit decimal) is used.
S
I
2
To Next Page
Loading...
Need help?
General
