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App-13
IM 701210-06E
Appendix
App
Appendix 4 ASCII Header File Format
Creation of ASCII Header File
When waveform data (Waveform) is stored on a storage medium (such as a floppy disk,
a Zip disk, or a PC card), the following two files will be created automatically in the
DL_WAVE directory.
• Waveform display data file (.wvf)
• ASCII header file (.hdr)
The waveform data file can be recalled to the instrument using the file menu. The ASCII
header files explained here cannot be viewed on the DL750/DL750P. Use the data such
as when analyzing the waveforms on your PC.
*1 Endian Mode When Saving Data
Big: Motorola 68000-family data
Ltl: Intel 86 family data
*2 Storage Format of the Binary Waveform Data
Trace: Groups into blocks, each block for a single waveform.
Block: Groups into blocks, each block for a given time interval.
Trace is used on the DL750/DL750P.
*3 Binary File Start Position
Offset from the beginning of the file
*4 Maximum Number of Blocks in the Group
Maximum number of blocks applies if the number of blocks varies between
waveforms.
*5 Y Axis Conversion Equation for Each Waveform
Y-axis value = VResolution
×
raw data + VOffset
*6 Data Type
ISn:
n-byte signed integer
IUn:
n-byte unsigned integer
FSn:
n-byte signed real number
FUn:
n-byte unsigned real number
Bm:
m-bit data
*7 X Axis Conversion Equation for Each Waveform
X axis value = HResolution
×
(Data No. – 1) + HOffset