We provide a driver with functions that have to be set up in the correct order so that you can sample at a specified rate. There are several functions to retrieve readings, which will allow single readings, single readings with time, block readings of values and block readings with times and values. The time is returned in microticks and can be used to calculate frequency, the values in ADC counts which can then be converted into peak to peak voltage.
To transfer the data from the ADC212/3 to the PC is dependent on the windows clock and the number of stored samples ... this operation usually takes approx 50ms.
You are not able to measure the wave form continuously due to this download period. If you require more samples to be taken to increase the period of sampling you would need to have an ADC212/50 or ADC212/100 these each have 128k per channel. Whereas the ADC212/3 has 32k and is divided between both channels when they are both active.