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

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FISCHERSCOPE ® X-RAY 43
User Interface of the WinFTM Software
6.6 mq Value
The mq value (measurement quality value) is a quality factor of the measurement value. It is dis-
played in the status bar.
The mq value is a measure for the agreement of the measured spectrum with the theoretical spec-
trum. The mq value is an indication for the confidence level and the trueness of the measurement
value. The smaller the mq-value of a reading is, the more correct is the measurement result. The
optimal value for mq is 0.
General recommendation:
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 measurement will be
terminated and the error message
ERROR: Spectrum not suitable! will be issued. The related meas-
urement 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
mq value Quality factor of the last measurement value. The mq value is a measure for
the agreement of the measured spectrum with the theoretical spectrum, see
Chap 6.6 on Page 43.
CAP The caps lock key of the computer keyboard was pressed.
NUM The number pad of the keyboard is activated.
1. only available at instruments equipped with motor-driven measuring stage
mq = 0 – 5 The measurement is OK.
mq > 5 The measurement must be discarded.
Display Explanation