66763Electrical instrumentationFeatures:1 Small size, complete functions, simple operation and easy to carry It can be powered by an adapter or a lithium battery 2 Square wave output is suitable for oscilloscope attenuator and probe pulse characteristic adjustment 3 Together with the oscilloscope, it can be used to test and debug electronic circuits, and test and measure the frequency characteristics and impulse response of audio amplifiers Description:Due to the good accuracy and frequency stability of DDS, it is also very suitable for oscilloscope scanning time factor calibration Specifications:Frequency range: sine wave 1Hz-500kHzResolution: 1HzOutput waveform: sine wave, square wave, triangle wave, forward sawtooth wave, reverse sawtooth waveSine wave distortion: