Keithley 4200A-SCS Reference Manual page 540

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Table of Contents

Model 4200A-SCS Parameter Analyzer Reference Manual

Section 6: Clarius

Viewing analysis results in the Analyze sheet

After executing a new formula, a new column of data containing the results is added to the Analyze

worksheet. If the formula in the upper Formula box was edited to replace a previous version, the

corresponding worksheet column updates to reflect the changes. In some cases, a results column

contains only a single value.

After some Formulator calculations, you may see one or more instances of the #REF notation in a

column, instead of a number. #REF in a cell indicates that a valid value could not be calculated. This

occurs when a Formulator function needs multiple rows as arguments, when a calculated value is

out of range, when a divide by zero is attempted, and so on.

For example, each result of the DIFF function is a difference coefficient that is calculated as the ratio

DValues1/DValues2, where DValues1 and DValues2 are differences between values in the

present row and values in the previous row. Because no previous row exists before the first row, a

valid calculation is not possible for the first row.

Therefore, the Formulator returns the #REF notation in the first row.

A column contains multiple instances of #REF if the Formulator function requires multiple prior cells

for the calculation. For example, if the MAVG function is using five data points to calculate a moving

average of a column containing five values, the first two and last two cells contain #REF.

Viewing analysis results in the Analyze graph

If a new column (vector) is added to the Analyze sheet after you create or change a formula, it can be

plotted in the Analyze graph like any other column (vector). See the following figure.

Figure 385: Added linear regression line to the graph

For information about using the Graph tab, refer to

(on page 6-196).

4200A-901-01 Rev. C / February 2017