Keysight Technologies 3458A Guide D'utilisation page 490

E High Resolution Digitizing With the 3458A
Figure E-9
In addition to time domain analysis like frequency, risetime, pulse width, and
overshoot, the Wave Form Analysis Library offers frequency domain analysis with
Fast Fourier Transform (FFT) and Inverse Fourier Transform (IFT), with the
Hanning filter function. Further, the Wave Form Analysis Library gives you a "Fast
Scope" program that lets your 3458A and a HP 9000 Series 200/300 computer
take measurements up to 50,000 Samples/s and present the data to the computer
display at a refresh rate up to 5/s. In effect, the combination gives you a very high
resolution single channel oscilloscope of 12 MHz bandwidth.
The Wave Form Analysis Library also lets you compare a previously captured wave
form with limits on the measurements to the input signal.
Several utility functions are also provided with the Wave Form Analysis Library:
Format, which formats the output display in engineering units, Intrpo, which
performs a linear interpolation between sample points, Sinc, which performs a
sinc function interpolation between sample points for signals captured near the
Nyquist limit, and Warn58, which prints error and warning messages on the
computer CRT or printer.
As an example, consider how the Wave Form Analysis Library can be used to
capture an AM modulated signal to extract the carrier, the modulation frequency,
and the depth of modulation.
490
Here is a typical way to structure your own automatic
measurement program using the Library Subprograms (not
necessarily a complete list).
Keysight 3458A User's Guide