Control arrangement for generating a measuring signal whose frequency is controlled by an input signal

摘要

The invention relates to a control arrangement for generating a measuring signal, with a defined level, whose frequency is controlled by an input signal, where the frequency of the output signal is coupled in phase-locked fashion with the frequency of the input signal and the level of the output signal is determined by discrete values stored in a sine table. In order to ensure the coupling over a wide frequency range of the input signal (E), a counter (Z) is provided which is activated via a voltage/frequency transformer (UF) by the output signal of a phase detector (PD) and which controls the read-out of the values of the sine table. The phase detector compares the phase of the input signal with the phase of the signal generated by the counter (Z). The invention can be used in particular in measuring systems for data transmission paths. <IMAGE>