DSO4000 Series Digital Storage Oscilloscope     57 
 
 
 
3.3 Example 3: Analyzing Input Signals to Eliminate 
Random Noise 
In certain circumstances, to display a noisy signal on the oscilloscope and to get its details, you 
may follow the steps below to analyze this signal. 
 
Observing Noisy Signal 
1.  Press the ACQUIRE button to see the Acquire menu. 
2.  Push the Type option button and select Real Time. 
3.  Push the Peak Detect option button. 
4.  If necessary, push the DISPLAY button and set the Contrast option to view the noise more 
clearly.