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What is the meaning of Continuous,Intermittent,Nb Cpt missing,Nb Cpt missing Qty,Nb Cpt Total Qty and Ratio Nb Cpt Missing Qty / Nb Cpt Total Qty in MTBF data.

Below are the description:

"Continuous" means that the process is continue, 
"Intermitent" means interrupted process (Power off during the night and during vacation).

The MTBF value of the module is calculated with MTBF of all components used on the module.

"Nb Cpt missing" is the number of component for which we haven't the MTBF.(By example a resistor and a capacitor so 2 components)

"Nb Cpt missing Qty" is the number of component for which we haven't the MTBF.(The resistor is twice used and the capacitor also so the quantity of components missing is 4 )

Nb Cpt Total Qty is the total number of components used on module.(For Eg. 341)

"Ratio Nb Cpt Missing Qty / Nb Cpt Total Qty" give the ratio of MTBF missing in the MTBF calculated.
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