| 摘要 |
PURPOSE:To generate an optional waveform which optional phase relation easily by reading previously stored data on the basis of sequences of numbers different with time, and outputting them after D/A conversion. CONSTITUTION:In memories 3a-3c, one-period waveform data are written. A reference counter 2a, when going from 0 up to N, starts counting at 0 again. On the basis of the reference counter 2a, data which corresponds to the address of the memory 3a is read out and converted by a D/A converter 4a into an analog numeral, which is outputted. Subordinate counters 2b and 2c synchronize with the reference counter 2a to generate pulses at different intervals of time, and data are read out of the memories 3b and 3c to obtain analog outputs. |
