The oscilloscope is the most commonly used electronic measurement tool by engineers, and both verification and debugging are crucial. Verification ensures that the design meets standards, while debugging helps quickly locate and resolve faults. However, did you know that these two steps require attention to different parameters?
1. Debugging
① Waveform Capture Rate
This is directly related to the speed at which the instrument can detect faults. A high capture rate can quickly capture sporadic or hard-to-reproduce signal anomalies.
② Trigger System
This includes trigger types (such as edge trigger, pulse width trigger, etc.) and trigger accuracy, ensuring that the instrument can accurately lock onto and display the part of the signal of interest, which is key to locating faults.
③ Analysis Capability
This involves automatic measurement functions (such as frequency, amplitude, phase, etc.), waveform mathematical operations, and advanced analysis functions (such as FFT analysis), helping to extract key information from complex waveforms.
2. Verification
① Signal Fidelity
Bandwidth: Ensure that the oscilloscope can accurately measure and display the highest frequency components of the signal being tested.
Sampling Rate: Must at least meet the Nyquist sampling theorem to avoid aliasing effects that can impact signal authenticity.
Interpolation Techniques: Advanced oscilloscopes use interpolation algorithms to enhance the resolution and accuracy of waveform displays.
Jitter Noise Floor and Background Noise: Low noise levels ensure the purity of signal measurements and reduce misjudgments.
Time Measurement Accuracy: Directly affects the accurate measurement of signal timing characteristics.
Probe System: The performance of the probe (such as bandwidth, attenuation, impedance matching) directly affects the fidelity of signal transmission.
② Sampling Rate and Memory Depth
A high sampling rate combined with a large memory depth allows for capturing more sample points in a single acquisition, which is particularly important for long-term or low-frequency signal analysis.
Ensure that during verification tests, signal details can be continuously and completely captured without omission, supporting comprehensive analysis of long-term or complex signals.
③ Analysis Tools
Powerful analysis software packages, such as automatic waveform recognition, advanced signal processing algorithms (like filtering, denoising), and protocol decoding, enhance the depth and accuracy of verification.
An intuitive and user-friendly interface simplifies complex analysis processes and improves verification efficiency.
This article is an original piece by Fan Yi Education, please indicate the source when reprinting!