Example 4: Reducing Random Noise Of Signals - UNI-T UTD2052CL+ User Manual

① Press TRIG MENU in the trigger control zone to display the trigger setup menu.
② In this menu, use F1~F5 set the trigger type to EDGE, set trigger source to CH1, set
inclination to Rising, set trigger type to Single and set trigger coupling to AC.
③ Adjust horizontal time base and vertical range to an appropriate range.
④ Turn the TRIGGER LEVEL control knob to get the desired level.
⑤ Press RUN/STOP and wait for a signal that meets the trigger condition. If any signal
reaches the set trigger level, the system will sample once and display it on the screen. By
using this function you can easily acquire any occasional event. For example, when a
relatively big amplitude of sudden glitch is acquired: set the trigger level to just higher than
the normal signal level. Press RUN/STOP and begin waiting. When a glitch occurs, the
machine will automatically trigger and record the waveform immediately before and after
triggering. By turning the horizontal POSITION knob in the horizontal control zone on the
front panel, you can change the trigger position horizontally to achieve negative delay
trigger of various lengths for easy observation of waveform occurring before the glitch.

Example 4: Reducing random noise of signals

If the signal being measured is stacked with random noise, you can adjust the setups of
your oscilloscope to filter or reduce the noise, so it will not cause interference to the signal
during measurement. (Waveform is shown below)
Figure 12-4 Reducing random noise of signals
Steps :
(1) As in the previous illustration, set the attenuation factor of the probe and Ch1.
Figure 12-3 Single signal
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UTD2000 Series User Manual