DDS technology: Due to the high Accuracy and stable frequency of the DDS, it is also very suitable for the oscilloscope's scan time calibration factor. Square output: The Squares output is also suitable for oscilloscope attenuators and probe pulse adjustment. Multiple waveforms: The main output waveform are sine and square‑wave, triangular wave, sawtooth wave. filter: Have a filter (can be turn on/off ) to suit the output of sine and pulse wave. Easy to operate: Small size, multiple functions, simple operation, easy to carry., Weight: 0.37919509064 pounds