The working principle of domestically produced portable oscilloscopes is based on the deflection of electron beams and the emission of fluorescent dots on the screen. When the input voltage signal enters the oscilloscope, the electron beam will deflect according to the change in voltage, thus forming a waveform on the screen. By adjusting the settings of the oscilloscope, the display mode of the waveform can be changed, such as amplitude, time axis scale, etc. Digital storage oscilloscope technology is used to convert analog signals into digital signals for processing and display.

Domestic portable oscilloscopes are widely used in fields such as electronics, communication, automation control, and power. In the field of electronics, it can be used for circuit debugging, troubleshooting, and performance testing; In the field of communication, it can be used to detect signal quality, analyze modulation characteristics, and demodulate bit error rates; In the field of automation control, it can be used to monitor the operating status of control systems and optimize control parameters; In the field of electricity, it can be used to detect the operating status and preventive maintenance of power equipment.

Measurement steps for domestically produced portable oscilloscopes:

-Choose a suitable probe, such as a 10:1 probe suitable for measuring high-frequency signals, while a 1:1 probe is suitable for low-frequency signals.

-Adjust the oscilloscope settings, including range and time reference, based on the characteristics of the measured signal (such as voltage, current, frequency, etc.).

-Connect the probe to the input port of the oscilloscope and connect the other end of the probe to the signal source of the device under test.

-Ensure a stable connection and avoid looseness or poor contact.

-According to the characteristics of the measured signal, set the time reference, voltage range and other parameters of the oscilloscope to ensure clear display of the signal waveform.

-If specific signal details need to be observed, parameters such as trigger level and trigger type can be adjusted to stabilize waveform display.

-Turn on the oscilloscope power and observe the waveform display on the screen.

-As needed, the oscilloscope settings can be further adjusted to optimize the waveform display effect.

-Analyze the characteristics of the waveform, such as period, amplitude, phase, etc., to understand the characteristics of the measured signal.