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I2S (Inter-IC Sound, or Integrated Interchip Sound), is an electrical serial bus interface standard used for connecting digital audio devices together, such as compact disc, digital audio tape, digital sound processors, and digital TV sound. Traditional methods of debugging serial busses such as I2S includes manual bit counting. But this visual technique of counting “1’s” and “0’s” can be tedious and prone to errors, especially since I2S is typically formatted in a 2’s complement format.
Keysight Technologies, Inc. serial bus options for the InfiniiVision oscilloscopes not only offers powerful triggering, but also provides unique hardware-accelerated decoding to help you debug audio designs with the I2S bus faster. With the industry’s fastest serial decode update rates, you can more easily find and debug random and intermittent errors and signal integrity problems that you could easily miss using other serial bus decode tools.
Other oscilloscope solutions with serial bus triggering and protocol decode typically use software post-processing techniques to decode serial packets/frames. Using these software techniques, waveform- and decode-update rates tend to be slow (sometimes seconds per update), especially when you use deep memory, which is often required to capture multiple packetized serial signals.
Segmented Memory acquisition captures and stores serial bus data packets
The Segmented Memory acquisition option (Option LMT) for Keysight’s InfiniiVision Series oscilloscopes can optimize your scope’s acquisition memory, allowing you to capture more I2S packets of data while using less memory. Segmented memory acquisition optimizes the number of serial packets that can be captured consecutively by selectively ignoring (not digitizing) unimportant idle time or unimportant packets of data. And with a minimum 250 picoseconds time-tagging resolution, you will know the precise time between each captured word. Keysight’s InfiniiVision lineup includes 5000, 6000 and 7000 Series oscilloscopes. These share a number of advanced hardware and software technology blocks. Use the following selection guide to determine which best matches your specific needs.
Keysight’s InfiniiVision oscilloscope portfolio offers:
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