RIGOL
© Copyright
RIGOL
Technologies, Inc. 2007.
3-3
User’s Guide for DS1000 Series
Example 3: Capture a Single-Shot Signal
To capture a single event, you need to gather some pre-test knowledge of the signal
in order to correctly set up the trigger level and slope. 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 you 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.
z
Press the MENU button in the Trigger control area to display the menu.
z
Press Edge to select trigger mode
z
Press
Slope
to select Rising
z
Press
Source
to select CH1
z
Press
Sweep
to select Single
z
Press Set Up
→
Coupling
to select DC
3.
Turn the vertical and horizontal
knobs to adjust the Volts/Div and
the Time base in a proper range for the signal
4.
Turn the
knob to adjust trigger level
2.
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 can help you 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
button in the horizontal
control area and change the level of the trigger position, you will get the inverted
delay trigger. It is useful when you want to observe the waveform before the
occurrence of the noise.
