Example 3: Capture A Single-Shot Signal - Rigol DS1102/4B 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.
3) Press Slope to select .
4) Press Source to select CH1.
5) Press Sweep to select Single.
6) 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 noise with large
amplitude; and 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
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.
© 2008 RIGOL Technologies, Inc.
knob to adjust trigger level.
User's Guide for DS1000B Series
knobs to adjust the Volts/Div and
knob in the horizontal control
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