SIGLENT SSA5083A, User Manual, Page: 161 / 260

User Manual 131
The “Density” view provides a good understanding of the frequency band and signals.Since the
measurements are gap free and all signal samples are represented in the display, it is possible to
see most of the signals in the band at a glance or over a short measurement time.Individual
display updates combine thousands of spectra and shows the signal dynamics and unexpected
behavior.
The “Density” view uses colour of bitmaps to represent the signal density. Density is defined as the
number of probability that frequency and amplitude points are hit during the capture interval (Acq
Time).
In this view, the X axis represents frequency, the Y axis represents amplitude, and the colour
represents signal density.
By controlling the brightness of the historical signal point of the “Density” view, the afterglow effect
can be achieved.
4.8.2 Spectrogram
Figure 4-2 Spectrogram
In the “Spectrogram” display, the same spectral data is shown with a time dimension added to the
spectrum display. “Spectrogram” records the relationship between the frequency-domain
characteristics of each event and time.
In this view, the X axis represents frequency, the Y axis represents time, and the colour represents