User`s guide

The Standard Data Format
All measurement data stored by the HP 3566A, HP 3567A, HP 35665A, HP 35670A, HP 89410A, and
HP 89440A is in a file format called Standard Data Format (SDF). Data saved in Standard Data Format
is the pure measurement data, with no engineering units or window corrections applied to it. It is stored
in binary, along with accompanying header information, and represents the highest resolution data
available from the analyzer. An SDF file is composed of several headers followed by the measurement
data. The headers contain information such as measurement settings that help reconstruct the data.
Appendix B, ‘’Standard Data Format,’’ describes the structure of SDF in detail. Read appendix B to
become familiar with SDF.
Using SDF Data with C Programs
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