Oscilloscope probing

• Probes have 2 terminals

  • Center conductor: Signal
  • Outer conductor: Ground

• You must supply a good ground

  • Voltage reference for the scope
  • Return path for current that goes up the probe
    • Recall Kirchoff's laws

• Our scopes have 2 channels

  • Can probe 2 signals simultaneously
  • They must be related in frequency

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