| 摘要 |
An arrangement is illustrated and described for generating a first alternati ng signal and a second alternating signal that is in a predetermined, fixed frequency relation to the first signal, with a first oscillator, a second oscillator and a third oscillator; in this connection, the first oscillator delivers an oscillation signal correspondin g to its oscillation frequency to a first digital frequency divider which generates t he first signal from this, and delivers an oscillation signal corresponding to its oscillation frequency to a second digital frequency divider which generates a first synchronization signal from this; the second oscillator delivers an oscillation signal corresponding to its oscillation frequency to a third digital frequency divider which generates a second synchronizatio n signal from this and delivers an oscillation signal corresponding to its oscillation frequency to a fourth digital frequency divider which generates a third synchronization signal from this; the third oscillator delivers an oscillation signal corresponding to its oscillation frequency to a fifth digital frequency divider which generates a fourth synchronizatio n signal from this and delivers an oscillation signal corresponding to its oscillation frequency to a sixth digital frequency divider which generates the second signal from this, in connection with which the first synchronization signal and the second synchronisation signal are fed to a first phase indicator which, depending on the phase difference between the first synchro- nization signal cad the second synchronization signal, puts out a voltage to a first volt-age-controlled oscillator which adjusts tho second oscillator's oscillation frequency in such a way that it is in a predetermined relation, to the oscillation frequency of the first oscillator, and the third synchronization signal and the fourth synchronization signal are fed to a second phase indicator which, depending on the phase difference between tire third synchronization signal and the fourth synchronization signal, puts out a voltage to a second voltage-controlled oscillator which adjusts the third oscillator's oscillation frequency in such a way that it is in a predetermined relation to the oscillation frequency of the second oscillator.
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