FISCHER FISCHERSCOPE X-RAY 4000 Series, Operator'S Manual

Page: 154 / 170

154 WinFTM
®
Features of WinFTM BASIC and LIGHT Further Features of WinFTM
Calculating the random
measurement uncertainty
u of a measured quantity
The measurement uncertainty, which is based on natural
count statistics, 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 calcu-
lated 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 devia-
tion (SD) or as relative standard deviation (RSD). This
allows for an estimation of the measurement range.

If several measurement quantities are to be measured
independent of one another, the calculation will require
specifications for the size of the other variables that will
not have the measurement uncertainty calculated. For
example, when determining the measurement uncer-
tainty 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
calculating the random and systematic portions of the
measurement uncertainty.

Random and systematic portion can be presented sep-
arately (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
administration tool.

Two overview windows (source directory and target
directory) allow for a convenient and clear control of the
copy procedure. 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