Seeed DS203, Руководство пользователя

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signal trace will be displayed.
This procedure can catch occasional events very easily, such as. a sudden spike of high amplitude. Set
the trigger level a little bit higher than normal signal level, press
, and wait for the spike. DSO203
will automatically trigger and store the waveforms before and after the triggering event
. It’s
shown in
the figure below. You can observe the waveforms before and after the triggering event.
Example Three: Measurements with Cursors
There are several measuring cursors in DSO203. They are displayed a narrow dotted horizontal and
vertical lines across the display screen. They are used to measure the time and voltage in the signal
traces.
The following figure shows a typical analog signal trace. You can do two exercises with this trace.
Measure the cycle time of the 3rd waveform from the signal trace.
Follow these steps:
1.
Navigate to T1 in N field. Change its color to yellow.
2. Scroll , move cursor T1 to the 3rd peak of the trace.
3. Navigate to T2 in O field. Change its color to yellow.
4. Scroll , move cursor T2 to the 4th peak of the trace.
5. Read
△
T=14.0uS, in the W field of the Parameter Area.
Measure the peak-to-peak voltage of the signal trace.
Follow these steps:
1.
Navigate to V1 in L field. Change its color to yellow.
2. Scroll , move cursor V1 to the top of the trace.
3. Navigate to V2 in O field. Change its color to yellow.
4. Scroll , move cursor V2 to the bottom of the trace.
5. Read
△
V=168mV in the X field of the Parameter Area.