1. Select the channel that you want to zoom.
2. Push Zoom.
3. Push the Scale side-menu button and use the Multipurpose knob to adjust
the size of the area to zoom (magnify).
4. Push the Position side-menu button and use the Multipurpose knob to adjust
the position of the zoom area in the waveform record.
Analyzing a waveform
120 TBS1000C Series Oscilloscopes User Manual