App-12
IM 701510-01E
Appendix 5
Output Data Format used when Saving
Waveform Data (Example DL1540L)
Header Files (Files with the identifier of “.HDR”)
The header file is always saved with the data, irrespective of the data type. The header file
contains information in ASCII format used when saved waveforms are recalled for analysis.
The same header file is used by all YOKOGAWA measuring instruments, so it may contain
some data which is not necessary for this instrument.
Only a brief description is given in this section. Detailed technical information on the
header file is available from YOKOGAWA.
If you need this information, contact your nearest YOKOGAWA representative.
//YOKOGAWA ASCII FILE FORMAT
$PublicInfo
: Common information label
FormatVersion
1.01
: Version No. of header file format
Model
1540L
: Model name
Endian
Big
: Endian mode (Big/Ltl)*1 for storage
DataFormat
Trace
: Storage format (Trace/Block) of binary file waveform data *2
GroupNumber
1
: Number of groups for display
TraceTotalNumber
1
: Total number of selected waveforms
DataOffset
0
: Start position of waveform data
$Group1
: Group No. of displayed waveforms
TraceNumber
1
: Number of waveforms in the group
BlockNumber
3
: Maximum number of blocks in the group *3
TraceName
Ch2
: Waveform No.
BlockSize
10024
: Data size of each block of waveform
VResolution
3.05176e-03
: Resolution co-efficient of Y axis conversion equation for each
waveform *4
VOffset
0.00
: Offset co-efficient of Y axis conversion equation for each
waveform*4
VDataType
IS2
: Type of waveform data of each waveform *5
VUnit
V
: Units used for Y axis of each waveform (no effect on data)
VPlusOverData
?
: Upper limit of error data
VMinusOverData
?
: Lower limit of error data
VIllegalData
-32768
: If any stored value in the binary data of any waveform matches this
value, the data is illegal.
VMaxData
32736
: Maximum value of binary data for each waveform
VMinData
-32736
: Minimum value of binary data for each waveform
HResolution
1.00000e-06
: Resolution co-efficient of X axis conversion equation for each
waveform *6
HOffset
1.00000e-03
: Offset co-efficient of X axis conversion equation for each
waveform*6
HUnit
s
: Units used for X axis for each waveform (no effect on data)
Date
95/12/01
: The date when the trigger was activated
Time
01:18:54
: Time when the trigger was activated
$PrivateInfo
: Information particular to model
ModelVersion
1.01
: Version No. of the model
MathBlockNo.
?
: Block No. of block to be computed
FormMath1
?
: Contents of Math1
DisplayPointNo.
9
: Display start point (the position from the beginning of the block)
TriggerPointNo.
300
: Trigger point (the position from the measurement start point)
PhaseShift
100
: Phase shift (number of data points)
(The following data is applicable to the DL1540L only.)
$MediaInfo
MediaNo.
1
: Sequential number of divided save
MGroupNumber
1
: Number of groups in this medium.
MTraceTotalNumber 1
: Number of waveforms in this medium
