Method and device for accessing data acquired by digital oscilloscope, and digital oscilloscope

A digital oscilloscope for converting an analog signal into a digital data and displaying the digital data, and storing, accessing and displaying the data to implement:

• sampling signals based on a preset sampling frequency and converting the signals into binary data by an ADC, and continuously storing the data into a buffer based on preset rules;
• generating one trigger event based on preset timebase parameters and trigger conditions each time when acquired data meets the trigger conditions:
• and
• reading a data segment from the buffer corresponding to each trigger event, and forming a waveform and then displaying;
• wherein the procedure of storing the acquired data into the buffer is independent of the procedure of generating the trigger event or reading the data segment or displaying the waveform;
• the step of converting the signals into the binary data by the ADC, and continuously storing the data into the buffer can be always periodically executed based on the preset rules unless it is stopped or the data acquire is restarted;
• and the preset sampling frequency is not restricted by the timebase and can keep the same in full scale of the timebase.