問題：
What is the description of the data placed in an oscilloscope "Mathcad", "MATLAB" formatted header file?
答案：
The Mathcad, or MATLAB files saved by Tektronix Windows based Oscilloscopes with the hdr.dat file extension have a five line header with the structure as follows:
RecordLength := header0 Number of acquired data points
TimePerPoint := header1 Time between data samples
TriggerPosition := header2 Index to the trigger position in the data record
FractionalTriggerPos := header3 Fraction of a sample interval to the trigger position
Horizontal Offset in Seconds :=header4 Time position of the first sample in the data record
The sample values are then listed in the .dat file.
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