Signal.SamplingFrequency := 10; //in Hz SignalModulator.Input := Signal; SignalModulator.Factor := 12; SignalModulator.CarrierFrequency := 4.5; 

The output sampling frequency will be: 10*12 = 120Hz The output signal will have non-zero frequencies from 45 to 50Hz which will hold the information originally stored in the range from 0 to 5Hz.