Owon TAO3000 Series User Manual page 120

display the Acquire menu.
(4) Select Acqu Mode in the bottom menu. Select Peak Detect in the right
menu.
(5) Click to call up the menu panel. Click the Trig Menu softkey on panel
to display the Trigger menu.
(6) Select the first menu item in the bottom menu. Select Single in the right
menu.
(7) In the left menu, select Edge as the mode.
(8) Select Source in the bottom menu. Select CH1 in the right menu.
(9) Select Coupling in the bottom menu. Select DC in the right menu.
(10) In the bottom menu, select Slope as
(11) Turn the upper knob and adjust the trigger level to the roughly 50% of the
signal to be measured.
(12) Check the Trigger State Indicator on the top of the screen, if it is not
Ready, push down the Run/Stop button and start acquiring, wait for trigger
to happen. If a signal reaches to the set trigger level, one sampling will be
made and then displayed in the screen. By using this approach, a random
pulse can be captured easily. For instance, if we want to find a burst burr of
high amplitude, set the trigger level to a slightly higher value of the average
signal level, push the Run/Stop button and wait a trigger. Once there is a
burr occurring, the instrument will trigger automatically and record the
waveform during the period around the trigger time. When the HOR button
is lit, by turning the upper knob on the front panel, you can change the
horizontal triggering position to obtain the negative delay, making an easy
observation of the waveform before the burr occurs (see Figure 7-3).
7.Demonstration
Figure 7-3 Capturing a Single Signal
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(rising).