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Electronics Engineering QUESTION #11731
Question 1
A logic analyser is more appropriate than an oscilloscope for debugging an SPI bus because:
  • A logic analyser has higher bandwidth
  • A logic analyser can decode protocol-level data (bytes, addresses, commands) simultaneously on multiple channelsāœ”ļø
  • A logic analyser has better voltage accuracy
  • An oscilloscope cannot trigger on digital signals
Correct Answer Explanation
A logic analyser captures and displays many digital channels simultaneously and can decode serial protocols (SPI, IĀ²C, UART, CAN) into human-readable data ā€” showing byte values, addresses, and command fields with timestamps. An oscilloscope shows analogue waveforms on 2ā€“4 channels; ideal for signal integrity but impractical for multi-channel protocol debugging.