The GB-212 oscillator is a versatile generator for frequencies between 20 Hz and 200 kHz, with square and sinusoidal signal outputs. The harmonic distortion of the signal is very low, which makes it very suitable for high fidelity, equalizer testing, amplifier response, RF generator modulation, measurement of resonance frequency of loudspeakers, LC circuit resonance, Servo system analysis, characterisitc study of electronic components, analysis and synthesis of basic circuits, amplifier response, analysis of passive networks, (resonant circuits, filters), ect.