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The Zoom button displays a magnified waveform. See How to view long
record length waveforms Zoom on page 119.
The Horizontal controls
The Horizontal Position knob adjusts the trigger point location left or right
relative to the acquired waveform record.
Push the Position knob to return the trigger point to the center of the screen
(center vertical graticule).
Appendices
162 TBS1000C Series Oscilloscopes User Manual