Description:  Application: Due to the high precision and stable frequency of the DDS, it is also very suitable for the scan time calibration factor of the oscilloscope.  Multi Purpose: The rectangular wave output is also suitable for oscilloscope attenuation links and probe pulse adjustment.  Output Waveform: The main output waveform are sine wave and square shaft, triangular shaft, sawtooth shaft.  With Filter: Have a filter (can be turned on and off) that matches the output of the sine wave and pulse wave.  Portable: Small size, multiple functions, easy operation, easy to carry.  Power Supply: DC4-10V. It is recommended to choose DC5V when using the adapter, and 3.7V battery when using battery power.  Current: 250MA when the voltage is 5V.  Frequency Range: Sine wave 1Hz-500kHz (the output amplitude will decrease with the further increase of frequency),   other waveforms 1Hz-50kHz (but the upper limit of adjustable frequency is not limited, if the distortion and shaking requirements are not high, use the frequency Can be further increased).  Tips:   All setting parameters can be saved.  There are filters that can be turned on and off, which can be well adapted to sine and pulse waveform output.    Specification:  Model: FG-100  Material: ABS  Color: white  Size(approx): 125*80*26.5mm/4.92*3.15*1.04inch  Resolution: 1Hz  Sine wave distortion: