A better FFT and better measurements, WaveForms style

M1 to M4 on the FFT, each reading the level at its frequency, the frequency and level from another marker, a level held when it was fixed, or the noise density in dBc/Hz. Peak puts a marker on the highest tone; Next left, Next right and Lower step from tone to harmonic without stopping on the noise or a window's side lobes. Every marker is listed in a table on the plot, and a bar over the plot's foot sets them while the spectrum stays in view. Over SCPI: :NOVAos:SPECtrum:MARKer<n>.

The Spectrum measurements sheet sets the FFT's resolution bandwidth: Auto, or a 1-2-5 step at a time, with the spectrum's own RBW shown beside it.

The last 8 to 128 spectra stacked in depth in the trace's place, the newest in front, hidden lines removed, coloured by level or by age; beside the spectrogram. The FFT plot can also run on a log frequency axis from a start frequency to the span's end, and everything on it follows.

The FFT's single-tone analysis is a set of measurements like any other: listed from the Measure sheet with statistics, trends and the histogram, and over SCPI (:NOVAos:MEASure:ITEM THD,CHAN1).

Every measurement's statistics carry its median; the measurements can be limited to the span between the cursors on every model; and a data logger writes the listed measurements, the counter and the DVM as timestamped CSV rows to the internal disk, a USB stick or a network disk, at every update, every Nth, at an interval or on a limit crossing.

Markers and their table on the spectrum, the resolution bandwidth in hand, spectrum measurements, waterfalls and a 3D view; More measurement statistics and ranges, and a way to keep long records of the results.

vastly better FFT: RBW, sets of cursors and markers, tables, averages and peak hold, measurements, waterfalls, 3D

vastly better measurements and math