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

Page: 37 / 170

FISCHERSCOPE
®
X-RAY 37
mq Value User Interface of the WinFTM Software
6.6.1 Upper Limit of the mq Value
The factory default for the upper limit of the mq value is set to 5. You do have the option
to change this upper limit.
When the upper limit of the mq value is exceeded during a measurement, the measure-
ment will be terminated and the error message
ERROR: Spectrum not suitable! will be
issued. The related measurement value will not be added to the result list.
To change to upper limit of the mq value
1. In the WinFTM main menu, click .
The window Modify product appears.
2. Select the tab Application .
3. In the field mq_Max , enter the new value for the upper limit.
If a value of 0 is shown in the field mq_Max , WinFTM will automatically set the mq value
to 5.
6.6.2 Possible reasons for mq values that are too high
The specimen is not correctly defined, e.g.:

wrong measurement application or wrong Def.MA

the expected substrate material does not correspond to the actual composition

interim coatings are not taken into account
Other reasons that may have influenced the measured spectrum in an unforeseeable
manner are possible as well, e.g.:

Shading of the radiation on its path from the sample to the detector through protruding
parts of the specimen

poor sample positioning

complex geometry of the specimen, curvature on the specimen too strong

measurement area too small

out of focus