Tektronix TDS544A Manual do Utilizador descarregar pdf (Página 86)

Performance Tests

Performance Verification Procedures

Figure 1-40: Sync Duty Cycle Test: One-Div Neg Pulse Waveform

Turn the pulse generator PULSE DURATION variable control to

adjust the negative pulse so the oscilloscope CH1 – Width

measurement displays 400ns +/–10 ns.

Turn the HORIZONTAL SCALE knob to set the oscilloscope time

base to 5 s/div.

Turn the pulse generator PERIOD variable control to adjust the

period until the oscilloscope CH1 Period measurement reads

21.000 s –25/+50 ns (See Figure 1-41). 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 TDS544A Manual do Utilizador Página 86