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The trigger slope control determines whether the sweep starts on

  • A.a rising or a falling edge of the signal
  • B.the positive or the negative half cycle of the horizontal sweep
  • C.the leading or the trailing edge of the blanking pulse
  • D.an internal or an external source of the trigger signal

Answer: A

Selecting the negative slope makes the sweep begin as the waveform falls through the trigger level instead of rising through it, which shifts the display by half a cycle on a symmetrical wave and matters greatly on a pulse train.

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