I do have an ADC212-100 and an ADC212-50. When I want to use them with both channel selected, the ADC212-100 requires that the specified sampling be set to twice the needed value to work properly, but this is not the case for the ADC212-50. In other words, when I call the adc200_set_timebase(&SamplingPeriodInt, &IsSlow, ADCTimebase) function for the ADC212-100, the ADCTimebase parameter must be decreased by 1 if both channels are enabled. This is not required for the ADC212-50. Any explanations?