Instek GFG-3015 Programmable 15MHz Function Generator

The GFG-3015 is a versatile and high precision programmable function generator, providing stable and accurate signals at up to 15MHz. Powered by Frequency Feedback technology, the GFG-3015 delivers frequency accuracy as low as 0.02% and a maximum resolution of10mHz. 10 front panel keys make memory setup and predefined signal production a breeze. With a massive feature set and great value, the GFG-3015 is an extremely versatile instrument used in education, repair service, production and experimental labs.

The Instek GFG-3015 Function Generator generates signals by continuously delivering a series of sampling values from a sine waveform table (stored in RAM) to DAC (Digital to Analog Converter) for waveform construction. With a low pass filter circuit to filter out the harmonics of the DAC output and smooth the signal, the Instek GFG-3015 Function Generator is able to provide a stable output with very low waveform distortion. This is very different from the way a conventional Function Generators generates a signal. Since a conventional FG needs to obtain its signal by switching current sources between positive and negative directions all the time, the "Ringing" distortion occurs at the peak of the signal waveform where the switching is activated. This distortion is especially serious when the output amplitude is low. For the INSTEK GFG-3015 Function Generator, however, the waveform distortion remains low even when the output amplitude is at only 2mVpp.