Agilent Technologies 4000 X-Series User Manual page 379

Waveform Header It is possible to store more than one waveform in the file, and each
waveform stored will have a waveform header. When using segmented
memory, each segment is treated as a separate waveform. The waveform
header contains information about the type of waveform data that is
stored following the waveform data header.
Header Size
Waveform Type
Number of
Waveform
Buffers
Points
Count
X Display Range
X Display Origin
X Increment
X Origin
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide
A 32-bit integer that is the number of bytes in the header.
A 32-bit integer that is the type of waveform stored in the file:
• 0 = Unknown.
• 1 = Normal.
• 2 = Peak Detect.
• 3 = Average.
• 4 = Not used in InfiniiVision oscilloscopes.
• 5 = Not used in InfiniiVision oscilloscopes.
• 6 = Logic.
A 32-bit integer that is the number of waveform buffers required to read the
data.
A 32-bit integer that is the number of waveform points in the data.
A 32-bit integer that is the number of hits at each time bucket in the waveform
record when the waveform was created using an acquisition mode like
averaging. For example, when averaging, a count of four would mean every
waveform data point in the waveform record has been averaged at least four
times. The default value is 0.
A 32-bit float that is the X-axis duration of the waveform that is displayed. For
time domain waveforms, it is the duration of time across the display. If the
value is zero then no data has been acquired.
A 64-bit double that is the X-axis value at the left edge of the display. For time
domain waveforms, it is the time at the start of the display. This value is
treated as a double precision 64-bit floating point number. If the value is zero
then no data has been acquired.
A 64-bit double that is the duration between data points on the X axis. For
time domain waveforms, this is the time between points. If the value is zero
then no data has been acquired.
A 64-bit double that is the X-axis value of the first data point in the data
record. For time domain waveforms, it is the time of the first point. This value
is treated as a double precision 64-bit floating point number. If the value is
zero then no data has been acquired.
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