With the development of the Internet of Things (IoT) and edge computing, virtual USB oscilloscopes are evolving towards intelligence and integration. For example, combining machine learning algorithms to achieve automatic detection of abnormal signals, or supporting multi probe expansion through modular design. In addition, the integration of functions with virtual logic analyzers and protocol analyzers will further broaden their application potential in embedded system debugging. With its cost-effectiveness and flexibility, it has become a practical tool for electronic engineers, educators, and maintenance personnel. Despite its performance limitations, its technological iteration speed and software defined characteristics make it an important player in the field of mid to low frequency signal measurement.

Measurement steps for virtual USB oscilloscope:

1. Hardware connection: Connect the probe of the USB oscilloscope to the tested circuit, paying attention to the grounding clip of the probe being connected to the grounding point of the circuit to reduce interference and ensure accurate measurement. Then connect the USB oscilloscope to the computer through the USB interface.

2. Software installation and startup: Install the corresponding drivers and virtual oscilloscope software on the computer according to the USB oscilloscope model used. After installation, start the software.

3. Set oscilloscope parameters:

-Time base setting: Adjust the time base knob or set the time base parameters in the software based on the frequency and period of the measured signal, so that the signal can display one or more periods completely and clearly on the screen.

-Vertical sensitivity setting: Adjust the vertical sensitivity knob or set the vertical sensitivity parameter in the software according to the amplitude of the signal, so that the signal occupies appropriate screen space in the vertical direction for easy observation and analysis.

-Trigger setting: Select the appropriate trigger source, trigger type, and trigger level. Generally, the measured signal can be selected as the trigger source, and the trigger types usually include edge trigger, pulse trigger, etc. The trigger level can be adjusted as needed to ensure that the oscilloscope can stably capture the signal.

4. Signal observation and measurement:

-Observing signal waveform: After setting the parameters, the waveform of the measured signal can be observed on the computer screen. By adjusting parameters such as time base, vertical sensitivity, and trigger, waveform display can be made clearer and more accurate.

-Measuring signal parameters: Using the measurement function provided by virtual oscilloscope software, various parameters of the signal can be measured, such as period, frequency, amplitude, peak to peak value, rise time, fall time, etc. These measurement results are usually displayed directly on the screen.

5. Data recording and analysis: If further analysis or recording of measurement data is required, the storage function of virtual oscilloscope software can be used to save the data as files, such as CSV, TXT, etc., for subsequent analysis and processing using other software.