Tektronix 4000 Series, User Manual

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Application Examples
Using the Horizontal Zoom Function
To take a close look at a particular point on the acquired waveform, use the horizontal zoom function. To look closely at the
point where the relay contact
fi rst begins to open:
1. Turn the Zoom knob.
2. Turn the Pan knob to place the center of
the zoom box close to where the relay
contact begins to open.
3. Turn the Zoom knob to magnify the
waveform in the zoom window.
Tektronix 4000 Series Oscilloscopes User Manual 275