Tektronix TDS500C Manual do Utilizador descarregar pdf (Página 98)

Performance Tests

1–82

TDS 500C, TDS 600B & TDS 700C Performance Verification and Specifications

Figure 1–39: Sync duty cycle test: one-div neg pulse waveform

H Turn the pulse generator PULSE DURATION variable control to

adjust the negative pulse so the oscilloscope’s CH1 – Width

measurement displays 400ns +/–10 ns.

H Turn the HORIZONTAL SCALE knob to set the oscilloscope time

base to 5ms/div.

H Turn the pulse generator PERIOD variable control to adjust the

period until the oscilloscope CH1 Period measurement reads

21.000ms –25/+50 ns. See Figure 1–40. Read note shown below.

NOTE. The pulse duration and period adjustments are critical in making this

measurement. If the pulse duration and/or the duty cycle are not stable, the

FLEXFMT function may not function. You must take care when making these

adjustments.

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Tektronix TDS500C Manual do Utilizador Página 98