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Functional Description
4-Channel SPO Digital Oscilloscopes
37
Operation Steps
To display in details a portion of the waveform:
1. Press the "
Horiz
" button to open the HORIZONTAL menu.
2. Turn the "
S/div
" knob to adjust the main timebase.
3. Press the «
Zoom
» button to activate the horizontal Zoom.
4. Turn the «
S/div
» knob to adjust the
“Zoom” time base.
5. Turn the horizontal "
Position
" knob to move the zoom window.
In the example below, we display in « Zoom » mode, a detail (a 0.24µs wide
window with a resolution of 0.5ns situated at 235µs from the trig event) of a signal
acquired at 2GSPS sample rate with a memory depth of 28Mpoints. The
oscilloscope has recorded the evolution of the signal during a lapse of time of 14ms
with an elementary time step of 0.5ns :
The arrows indicates the delay value (Delay=235µs) relative to the trigger event
and the signal value for this delay :
We can « Stop » the trace refresh («
Run/Stop
» button) to observe it in detail.
For example we can determine the value that the signal has 74ns before the trigger
event by moving the zoomed window (Horizontal « Position » knob):
The red arrows indicate the value of the signal at the trigger event and 74ns before :