Horizontal Controls
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TDS3000 Series User Manual
The trigger position is marked with the letter T at the top of the
graticule and also in the waveform record icon at the top of the
screen.
Trigger marker and
horizontal expansion point
Waveform record icon
The small inverted triangle is the horizontal expansion point. When
you change the horizontal SCALE setting, the waveforms contract or
expand about this point. When delay is off, the horizontal expansion
point is the same as the trigger point.