Stanford Research Systems SR780, Operating Manual And Programming Reference

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Measurement Groups 2-3
SR780 Network Signal Analyzer
Measurement Groups
The SR780 is organized into three Measurement Groups - FFT, Octave Analysis and
Swept Sine. Choose the Measurement Group in the [Display Setup] menu.
The Measurement Group determines how the input data is processed. In FFT group, the
input data is gathered into time records which are then transformed into spectra. In
Octave group, the data is passed through a parallel bank of filters and averaged. In Swept
Sine group, the data is integrated over exact source cycles.
The data processing in each group is governed by the parameters chosen in the menus.
For some menus, the choice of the Measurement Group determines which parameters are
shown in the menu. The [Frequency], [Average] and [Source] menus have three different
sets of parameters, one for each group. For other menus, part or all of the menu is
unavailable in certain groups. The [Window], [Capture] and [Waterfall] parameters do
not apply to all groups.
Each group has its own set of available measurements. All three have frequency domain
measurements while only FFT has time records. To make a measurement, choose the
Measurement Group, then the Measurement, View and Units.