User`s guide

192 53220A/53230A User’s Guide
6 53220A/53230A Math, Graphing, and Data Logging
Math Functions
The 53220A/53230A counter math functions include smoothing, null/scale,
statistics, and limit checking. Figure 6-1 is a description of how the functions
are enabled.
The math functions are enabled at two levels: 1) the CALCulate[1] sub-
system as a whole is enabled, and 2) the individual math operation is enabled.
Math operations begin once the measurements are started either by INI-
Tiate:IMMediate or READ?, or as soon as the operation is selected from the
front panel (with internal triggering). Readings are processed real time and
displayed, stored in reading memory, and sent to the ouput buffer (they are
not post-processed from reading memory).
The number of readings processed for a given trigger cycle (Chapter 5: “Trig-
gering and Gating”) is determined by the trigger count (TRIGger:COUNt) and
the number of readings per trigger (SAMPle:COUNt). The default trigger
count and sample count set by each command is ‘1’. Each time the counter is
initiated reading memory is cleared and a new set of math-processed data is
generated. From the front panel, readings are processed continually if the trig-
ger source remains at its default INTernal setting.
The math and graphics functions covered in this chapter are enabled individu-
ally (Figure 6-1). However, multiple operations may be enabled at the same
time and performed on the same set of readings.
NOTE
The SCPI commands and parameters listed throughout this chapter are provided
as a guide to how the counter is operated programmatically. The commands are
described in detail in the ‘Programmer’s Reference’ section of the Agilent
53210A/53220A/53230A Product Reference CD.