Digital/Analog Frequency Conversion by the Principle of PLL-Frequency.

For component optimization of a process computer oriented instrumentation system frequency analog signals present themselves as a connecting link between the analog process and the digital data processing. At the points of intersection analog-frequency/digital- and digital/analog-frequency converters become necessary. The requirements with regard to such a converter are defined and the design of a new converter applying the PLL-principle is presented. Stationary and dynamic considerations are involved in synthesis.