53220A/53230A Math, Graphing, and Data Logging 6
Keysight 53220A/53230A User’s Guide 223
Viewing histograms
At power-on or when the front panel Preset key is pressed, numeric data is 
displayed. Remotely, histograms can be displayed by changing the display mode 
using the command:
DISPlay[:WINDow]:MODE {NUMeric|HISTogram|TCHart}
DISPlay[:WINDow]:MODE?  (query form)
The Graph key followed by the Histogram softkey enables and automatically starts 
histograms from the front panel. Histograms can also be turned off from the 
softkey menu.
Remotely, a reset (*RST) or instrument preset (SYSTem:PRESet) does not change 
the display mode.
Histograms correspond to readings in reading memory - starting at the time the 
histogram is enabled and ending when the product of the trigger count 
(TRIGger:COUNt) and sample count (SAMPle:COUNt) is reached. If triggering is 
continuous (i.e. internal), the histogram continually updates from the point it was 
enabled.
Figure 6-6 describes the information provided in a typical histogram window.