Practice question

What type of waveform is expected when probing a healthy CAN-High data bus line with an oscilloscope while the network is communicating?

  1. A sine wave oscillating smoothly between -5 volts and +5 volts
  2. A digital signal switching between a 2.5V baseline and a 3.5V dominant state
  3. A constant 12-volt flatline DC supply pattern
  4. A random sawtooth wave that spikes up to 100 volts

Answer: B — A digital signal switching between a 2.5V baseline and a 3.5V dominant state

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