FISCHER FISCHERSCOPE X-RAY XDLM 231, Operator'S Manual

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214 FISCHERSCOPE ® X-RAY
Features of WinFTM BASIC and LIGHT
Calculating the random
measurement uncertainty
u
of a measured quantity
The measurement uncertainty, which is based on natural count sta-
tistics, is an important quantity in measurement technology.

The measurement uncertainty u of the current single reading
can be displayed.

The anticipated measurement uncertainty can be calculated
individually for each measured quantity.

A measured quantity can be varied in a wide range.

The calculated result for u is presented graphically as a chart:
either as theoretically anticipated standard deviation (SD) or as
relative standard deviation (RSD). This allows for an estimation
of the measurement range.

If several measurement quantities are to be measured inde-
pendent of one another, the calculation will require specifica-
tions for the size of the other variables that will not have the
measurement uncertainty calculated. For example, when deter-
mining the measurement uncertainty of a buried coating (for
example Ni in Au/Ni/Cu), the thickness of the top coating(s)
must be known.

The final result chart can be printed.

Traceability of the measurement result is possible by calcu-
lating the random and systematic portions of the measurement
uncertainty.

Random and systematic portion can be presented separately
(both the single readings and the mean values).

Uncertainties of the calibration standards can be entered.

The display of the measurement uncertainty(ies) can be shown
or hidden.
Convenient copying of
Def.MA Copying of Def.MA files is supported by a convenient data admin-
istration tool.

Two overview windows (source directory and target directory)
allow for a convenient and clear control of the copy proce-
dure. A Def.MA file can be opened and checked prior to
copying.

Available Def.MA files can be taken from one folder.

The Search/Sort function is helpful in finding the desired
Def.MA file.

Easily viewable Def.MA notepad contents support searching.
Function Description