Example 3: Capture A Single-Shot Signal - Rigol DS1302CA User Manual

Example 3: Capture a Single-Shot Signal

To capture a single event, it needs to gather some pre-test knowledge of the signal
in order to set up the trigger level and slope correctly. For example, if the event is
derived from TTL logic, a trigger level of 2 volts should work on a rising edge.
The following steps show how to use the oscilloscope to capture a single event.
1. Set the probe and the channel attenuations to 10X.
2. Set up the trigger.
(1) Press the MENU button in the Trigger control area to display the menu.
(2) Press Edge to select the trigger mode. Press Slope to select . Press Source to
select CH1. Press Sweep to select Single. Press Set Up→Coupling to select DC.
(3) Turn the vertical and horizontal
the Time base in a proper range for the signal.
(4) Turn the
(5) Press RUN/STOP button to start capturing. When the trigger conditions are met,
data appears on the display representing the data points that the oscilloscope
obtained with one acquisition.
This function helps to capture the occurrence easily, such as the noisy with
large amplitude; set the trigger level higher a little above the normal level and
press RUN/STOP and wait. When noise occurs, the instrument will record the
waveform before and after the trigger. Adjust the
horizontal control area and change the level of the trigger position, will get the
inverted delay trigger. It is useful to observe the waveform before the
occurrence of the noise.
User‟s Guide for DS1000CA Series
knob to adjust trigger level.
knobs to adjust the Volts/Div and
RIGOL
button in the
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