An overvoltage detection circuit coupled to an external power supply via a voltage supply line and comprising a transistor comprising first terminal coupled to the voltage supply line, second terminal coupled to the first terminal via a resistor, the second terminal coupled to a parasitic capacitor, the transistor configured to receive an overvoltage spike from the external power supply on the first terminal, and provide an output voltage on third terminal of the transistor to indicate detection of the overvoltage spike when it has a duration less than a time constant based on the resistor and the parasitic capacitor and amplitude that exceeds a threshold voltage of the transistor. The overvoltage detection circuit further comprises a monitor circuit configured to receive the output voltage from the transistor and provide a digital signal providing a notification of the detected overvoltage spike from the external power supply on the voltage supply line.

A method for accessing data acquired by a digital oscilloscope, consists of the following, steps: sampling signals based on a preset sampling frequency and converting into binary data by an ADC, continuously storing the data into a buffer based on preset rules: simultaneously, generating one trigger event based on preset timebase parameters and trigger conditions each time when acquired data meets the, trigger, conditions; reading a data segment from the buffer corresponding to the trigger event, and forming a waveform and then displaying. 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 implementation of the method and device for accessing data acquired by a digital oscilloscope as well as the digital oscilloscope brings the following advantages: seamless acquisition is achieved, the sampling rate is not restricted by timebase parameters, and the memory depth is not restricted by the waveform processing speed as traditional oscilloscope.

A method for accessing data acquired by a digital oscilloscope, consists of the following steps: sampling signals based on a preset sampling frequency and converting into binary data by an ADC, continuously storing the data into a buffer based on preset rules; simultaneously, generating one trigger event based on preset timebase parameters and trigger conditions each time when acquired data meets the, trigger, conditions; reading a data segment from the buffer corresponding to the trigger event, and forming a waveform and then displaying. 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 implementation of the method and device for accessing data acquired by a digital oscilloscope as well as the digital oscilloscope brings the following advantages: seamless acquisition is achieved, the sampling rate is not restricted by timebase parameters, and the memory depth is not restricted by the waveform processing speed as traditional oscilloscope.

A method for accessing data acquired by a digital oscilloscope, consists of the following steps: sampling signals based on a preset sampling frequency and converting into binary data by an ADC, continuously storing the data into a buffer based on preset rules; simultaneously, generating one trigger event based on preset timebase parameters and trigger conditions each time when acquired data meets the, trigger, conditions; reading a data segment from the buffer corresponding to the trigger event, and forming a waveform and then displaying. 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 implementation of the method and device for accessing data acquired by a digital oscilloscope as well as the digital oscilloscope brings the following advantages: seamless acquisition is achieved, the sampling rate is not restricted by timebase parameters, and the memory depth is not restricted by the waveform processing speed as traditional oscilloscope.

An overvoltage detection circuit coupled to an external power supply via a voltage supply line and comprising a transistor comprising first terminal coupled to the voltage supply line, second terminal coupled to the first terminal via a resistor, the second terminal coupled to a parasitic capacitor, the transistor configured to receive an overvoltage spike from the external power supply on the first terminal, and provide an output voltage on third terminal of the transistor to indicate detection of the overvoltage spike when it has a duration less than a time constant based on the resistor and the parasitic capacitor and amplitude that exceeds a threshold voltage of the transistor. The overvoltage detection circuit further comprises a monitor circuit configured to receive the output voltage from the transistor and provide a digital signal providing a notification of the detected overvoltage spike from the external power supply on the voltage supply line.

An overvoltage detection circuit coupled to an external power supply via a voltage supply line and comprising a transistor comprising first terminal coupled to the voltage supply line, second terminal coupled to the first terminal via a resistor, the second terminal coupled to a parasitic capacitor, the transistor configured to receive an overvoltage spike from the external power supply on the first terminal, and provide an output voltage on third terminal of the transistor to indicate detection of the overvoltage spike when it has a duration less than a time constant based on the resistor and the parasitic capacitor and amplitude that exceeds a threshold voltage of the transistor. The overvoltage detection circuit further comprises a monitor circuit configured to receive the output voltage from the transistor and provide a digital signal providing a notification of the detected overvoltage spike from the external power supply on the voltage supply line.