Zoom
3–146
TDS 420A, TDS 430A, TDS 460A & TDS 510A User Manual
Selected Graticule
Zoomed Waveforms
Zoom Boxes
Unzoomed Waveform
Figure 3–80: Zoom Preview Mode
To reset all zoom factors to their defaults, press ZOOM
➞ Reset (main) ➞
Reset All Factors
(side).
To reset only “live” waveform zoom factors to their defaults, press ZOOM
➞
Reset
(main) ➞ Reset Live Factors (side).
Press ZOOM
➞ Mode (main) ➞ Off (side) to return to normal oscilloscope
(non-zoom) operation.
To Zoom a Waveform (TDS 510A Only)
To use Zoom, turn zoom on and magnify the waveforms using the vertical and
horizontal scale knobs:
1. Press ZOOM
➞ ON (side). The ZOOM front-panel button should light up.
2. Choose which waveforms to zoom by repeatedly pressing Horizontal Lock
(side): None, Live, or All.
NOTE. Although zoom must be turned on to control which waveforms zoom
affects, the setting for Horizontal Lock affects which waveforms the horizontal
control positions whether zoom is on or off.
Reset Zoom