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Oscilloscope

Oscilloscope. Sweep generator. Sweep. TIME/DIV. t. Trigger Fault. Trigger Fault. Trigger generation. Trigger. Sawtooth. Positive trigger level . Trigger. Sawtooth. Negative trigger level . Trigger. Sawtooth. Part of the signal: less than one period. Trigger. Hold-on time.

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Oscilloscope

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  1. Oscilloscope

  2. Sweep generator

  3. Sweep TIME/DIV t

  4. Trigger Fault

  5. Trigger Fault

  6. Trigger generation Trigger Sawtooth

  7. Positive trigger level Trigger Sawtooth

  8. Negative trigger level Trigger Sawtooth

  9. Part of the signal: less than one period Trigger Hold-on time Sawtooth

  10. Part of the signal: more than one period Trigger Sawtooth

  11. Dual Trace oscilloscope • Use a single-beam (one electron gun) . • Time-multiplex the inputs. • Chop mode or Alternate mode. • Chopped mode: during the samesweepperiod, alternatebetween the two input signals. (better for slow sweep, i.e. highperiod) • Alternate mode: one sweepperiod for each signal. ( better for fastsweep, i.e. lowperiod)

  12. X-Y mode Y Vy =A sin(𝝎 t) Vx =A sin (𝝎 t+θ) X

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