How to Debug Embedded Designs with an Oscilloscope

Protocol triggers, error counters, mask testing, and more!
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Embedded designs consist of multiple serial protocols and components that require deeper analysis. In this video, learn how to test and debug your embedded or mixed-signal designs to find any errors that could disrupt your device’s performance. This video covers protocol triggering and decoding for I2C, SPI, UART, RS-232, I2S, USB power delivery.

Today’s embedded designs based on microcontrollers and digital signal processors with chip-to-chip communications often include a combination of analog signals, digital I/O buses, and serial buses. With an oscilloscope you can characterize the analog quality of your signal and time-correlate serial activity with other analog and digital I/O signals.
InfiniiVision oscilloscopes help you debug easier and faster with hardware based serial decoding, one million waveform per second update rate, a dual bus time interleaved protocol lister display, digital channels, segmented memory, and a real-time frame error counter.

Download a free trial of the InfiniiVision embedded software package here: https://connectlp.keysight.com/Free-SW-Trial-Oscilloscopes. Not only does it allow you to decode I2C, SPI, UART, RS-232, I2S, USB power deliver, but also provides switch mode power supply analysis, mask testing, frequency response analysis, and HDTV video trigger.

If you need to validate the quality and stability of your components or systems, the mask limit testing capability can save you time and provide pass/fail statistics almost instantly. Mask testing offers a fast and easy way to test your signals to specified standards, as well as the ability to uncover unexpected signal anomalies, such as glitches. Mask testing on other oscilloscopes is usually based on software-intensive processing technology, which tends to be slow. Much like the software decoding you learned about.

With the mask testing being performed in hardware, you can test up to 270,000 real-time waveform pass/fail tests per second. This makes your testing throughput orders of magnitude faster than what you can achieve on other oscilloscope’s software mask test.
The creation of the mask is simple with the automask functionality and option to upload custom masks. You can also download multi-region masks and setups based on industry standards on our website.

Frequency Response Analysis (or FRA) is often a critical measurement used to characterize the frequency response of a variety of today’s electronic designs, including passive filters, amplifier circuits, and negative feedback networks of switch mode power supplies (or the loop response).

This frequency-domain measurement capability is achieved with a swept gain and phase measurement versus frequency. This is also known as a Bode plot. The InfiniiVision oscilloscope uses the scope’s built-in waveform generator to stimulate the circuit under test at various frequency settings and then captures the input and output signals using two channels of the oscilloscope. At each test frequency, the scope measures, computes, plots gain logarithmically and phase linearly.

And lastly, Whether you’re debugging consumer electronics with HDTV or characterizing a design, the enhanced HDTV video triggering and analysis provides support for a variety of HDTV standards. This enhanced video measurement capability supports a video IRE display grid with cursor measurements performed in video IRE units for NTSC and PAL standards. In addition, enhanced video analysis provides an array of additional HDTV triggering standards that will help speed up debug and characterization.

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Видео How to Debug Embedded Designs with an Oscilloscope канала Keysight Labs