Keithley 4200A-SCS Reference Manual page 306

Model 4200A-SCS Parameter Analyzer Reference Manual Section 6: Clarius
The data points are rounded to the nearest value.
For example, if Start = 0 V, Stop = 5 V, and Step = 0.6 V:
In this case, the Step value is forced to 0.625 V, which results in a data point value of 9.333, which is
rounded to 9. The instrument forces nine voltages at 0 V, 0.625 V, 1.25 V, 1.875 V, 2.5 V, 3.125 V,
3.75 V, 4.375 V, and 5 V.
Start (step)
The Start parameter is the current or voltage that is forced for the first step value.
Stop (step)
The current or voltage that is forced for the last step value.
Step (step)
Specifies the current or voltage increments of the steps.
Clarius never steps the force voltage beyond the value specified by the stop parameter, even if you
specify a step value that is larger than the stop value.
Use a step value that does not result in a fractional number of data points. If the data point is
fractional, the step value is forced to a value that results in a whole number of data points. To
calculate the data points:
The data points are rounded to the nearest value.
For example, if Start = 0 V, Stop = 5 V, and Step = 0.6 V:
In this case, the Step value is forced to 0.625 V, which results in a data point value of 9.333, which is
rounded to 9. The instrument forces nine voltages at 0 V, 0.625 V, 1.25 V, 1.875 V, 2.5 V, 3.125 V,
3.75 V, 4.375 V, and 5 V.
If Start = 0 A, Stop = 0.005 A, and Step = 0.0015 A:
This results in a data point value of 4.333, which is rounded to 4. The instrument forces four values at
0 A, 0.001666 A, 0.0033326 A, and 0.0049992 A.
4200A-901-01 Rev. C / February 2017 6-37