| 摘要 |
PURPOSE:To output a basic frequency waveform mixed with an even number multiple of frequency waveform by constituting the titled generator in which a data of an address counter is shifted by a multiplexer so as to read a data of a storage device in time division. CONSTITUTION:A pulse output in frequency fg from a pulse generator 5 is frequency-divided 4 by M, the frequency is changed into N=fg/M.fp and the signal is inputted to a frequency-division circuit 7 to change the frequency dividing ratio of the circuit 7 into N/2 and a pulse train in frequency 2M.fp is obtained. A counter data is outputted by inputting the pulse train to a counter 8. The counter data is inputted to a multiplexer 9. An address value outputted from the multiplexer 9 is inputted to an address data of a storage device 10 and the data where one period is expressed by the M-word written in the device 10 is outputted. Thus, the basic wave and the 2nd harmonic are inputted to a D/A converter 11 in time division, then the data is outputted as a waveform where the basic frequency and the double frequency signals are mixed. |
