VA is a real time program which simulates a set of electronic instruments, Such as:

- Oscilloscope (dual channel, xy, time division, trigger);

- Spectrum Analyser with amplitude and phase display (linear, log, lines, bar, octaves band analysis 1/3, 1/6, 1/9);

- Wave-form generator with "custom functions", triangular, square, sinus, white noise and pulse generation (NO ALIASING);

- Frequency meter (in time and frequency domain) and counter;

- Volt meter with rms and peak to peak display;

- Filtering (low pass, hi pass, band pass, band reject, notch, "diode", DC removal);

- Memo windows for analysis and file saving of time and spectrum displays;

- A TRUE software digital analog conversion (for complete signal reconstruction)

- See detailed description of the points above...