1Top of oscilloscope can output adjustable square waves with 3V amplitude, frequency adjustment range is 02MHz,accuracy up to 0.1Hz, and duty cycle adjustment range is 1%99%. 2It can be used for new probe calibration, driving MOS tube, replacing crystal oscillator (testing whether there is a problem with crystal oscillator) and so on. 3Support FFT spectrum analysis, can convert time domain waveform into frequency domain, widely used in harmonic analysis and other aspects. 4Mainly used in various fields of testing, singlechip microcomputer, automobile and home appliance maintenance, electronic competition, power supply debugging, inverter, etc. 5Support onekey lock reference waveform, current waveform lock will be displayed on the screen, the normal refreshed waveform will not be affected. 6Onekey storage of waveform on screen, can be transmitted to the computer via USB waveform, which is convenient for viewing and analyzing problems. 7Support automatic trigger, normal trigger, single trigger, simple operation, stable and reliable performance. 8With waveform analysis function, can drag the waveform left and right after pressing the pause button, and can also expand and observe the details to analyze the cause of the problem.