The Spectrogram view shows signals in both 
the frequency and time domain. The X-axis 
represents frequency, the Y-axis represents time 
and the color of each point represents the 
amplitude at a particular frequency & time 
(Red = high dark blue = low).  
 
Each new trace is shown at the bottom of the 
display and older traces are pushed up toward 
the top of the display until they are removed.