The main design concept was to reduce mechanical elements causing vibrations with bad influence on the return loss level.
Mechanical elements were replaced by electric or electronic systems which can be exactly measured and controlled. In this way the process can be adapted to the differenz products, and the process stability can be measured. Maintenance costs are reduced, the process liability is increased.
Further, it has been targeted to control easily and effectively all product parameters to ensure the product stability and the return loss level. The stability of parameters and the value of return loss have an important economic impact.