206 53220A/53230A User’s Guide
6 53220A/53230A Math, Graphing, and Data Logging
CALCulate[1]:AVERage:MAXimum?
- returns the maximum value of all readings in the current reading count.
CALCulate[1]:AVERage:PTPeak?
- returns the average peak-to-peak value (average maximum value - average
minimum value) of all readings in the reading count.
Example: Computing Individual Statistics
The following example shows these reading parameters queried individually.
CONF:PER (@1) // configure period measurement
TRIG:COUN 2 // trigger count = 2
SAMP:COUN 100 // 100 rdgs per trigger
SENS:FREQ:GATE:TIME 10e-3 // 10 ms gate time
CALC:STAT ON // enable CALCulate1 subsystem
CALC:AVER:STAT ON // enable statistics
INIT // initiate the measurements
*WAI // wait for all rdgs to complete
CALC:AVER:MIN? // query individual parameters
CALC:AVER:MAX?
CALC:AVER:AVER?
CALC:AVER:PTP?
Allan Deviation
Allan deviation which is used to estimate stability, is selectable from the front
panel (Figure 6-3) or can be enabled with the command:
CALCulate[1]:AVERage:ADEViation?
Allan deviation is used for frequency
measurements onl
y, and
requires c
ontinuous (gap-free) measurements (SENSe:FREQuency:MODE
CONTinuous) for highest accuracy. Continuous mode is available with the
53230A only.
Allan deviation is also available with the 53220A; however, the 53220A does
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