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DSO3000 SERIES
DIGITAL OSCILLOSCOPE
Capturing 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 3.3V COMS logic, a trigger level of 1.2 or higher Volts should work on a rising edge.
Do these steps as follows:
1. Set the probe and the channel attenuations to X 10.
2. Set up the trigger in the Trigger Menu, or in the Trigger Setting window.
1) Adjust the Trigger Mode to Edge.
2) Set the Trigger Sweep to Single.
3) Set the Trigger Source to CH1.
4) Set the Trigger Slope to “+” which means you select the rising edge.
5) Adjust the Volts/Div and the time base in a proper range for the signal.
6) Drag the trigger level sign on the waveform display screen to proper position. It’s usu-
ally higher a little above the normal level.
7) Click START button to start capturing. When the trigger conditions are met, data ap-
pears on the display representing the data points that the oscilloscope obtained with one
acquisition.
This function helps to capture the signal occurrence easily, such as the noise with large
amplitude; set the trigger level higher a little above the normal level and press and wait.
When noise occurs, the instrument will record the waveform before and after the trigger.
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