Frequency Sweeper

All Windfreak Technologies RF signal generators come with linear frequency sweeping ability.  The user sets up a start frequency, stop frequency, step size, and step time.  The signal generators can then memorize those values and sweep without the aid of a PC since the sweep is purely driven by the onboard processor.  Some products like the SynthHD Mini and SynthUSB3 also have the ability to non-linearly sweep up or sweep down as a percentage of the last frequency which is helpful in EMI testing.