How To Use The QM Formula Functionality

I have a scenario where I have 3 master inspection characteristics. Characteristic 70 'Before', Characteristic 80 'After', Characteritic 90 'Difference'. What I would like to know is how to use the formula functionality to calculate the difference between 70 'Before' and 80 'After' and record this in Characteristic 90 'Difference' . These are quantitative characteristics with single results recording (50 samples).

In control indicator of characteristic 90 choose option Calc. charac. in formula tab.  As soon as you do this, system will ask for the formula, you just enter there A00080 - A00070 or any other calculation formula  required by you.

MIC 90 must have these settings:

- Active Record Measure Value control indicator.
- Select the radio button: Calculated characteristic.

In the inspection plan (MIC level):

- Select the MIC 90, go to "Quan Data", Enter the formula C00080 - C00070.

Also, you have this options (Prefix) to use with formulas:

A0 Measured value for single unit
B0 Arith. mean of measur. values for sample
B1 No. of valid measured values for sample
B2 Share of defective units for sample
B3 No. of defects observed in sample
B4 No. of defective units in sample
B8 Variance of valid meas. values in sample
B9 Minimum valid meas. value in sample
BA Maximum valid meas. value in sample
C0 Arith. mean of measured values for char.
C1 No. of valid measured values for char.
C2 Share of defective units in char.
C3 No. of defects observed in char.
C4 No. of defective units for char.
C5 Upper limit of tolerance range
C6 Lower limit of tolerance range
C7 Target value of characteristic
C8 Variance of valid meas. values for char.
C9 Minimum valid meas. value for char.
CA Maximum valid meas. value for char.
D0 Function module test

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