PeakTech 1145 Bedienungsanleitung Seite 75

7.1.7. Using "ACQUIRE"-Function
1) Noisy Signals And Acquisition Mode
Often you will need to deal with a noisy signal displayed on the oscilloscope and you need to know more about it.
The signal might contain more detail than you can now see in the display.
The signal appears noisy and you suspect that noise is causing problems in your circuit. It is helpful to see the
peaks which detect and emphasize noise spikes and glitches in your signal.
To better analyze the noise and to see the peaks, follow these steps:
1. Push the ACQUIRE button to see the Acquire Menu.
2. Push the Peak Detect option button and set to On.
3. If necessary, push the DISPLAY button to see the Display Menu.
4. Use the Contrast Increase and Contrast Decrease option buttons to adjust the contrast to see the noise more
easily.
2) Dealing With Noisy Signals And Using Acquisition Mode Continued
Many signals contain unwanted noises. It is often necessary to analyze the signal shape and filter the unwanted
noise. To reduce the unwanted noise in the signal displayed on the screen, follow these steps:
1. Push the ACQUIRE button to see the Acquire Menu.
2. Push the Average option button.
3. Push the Averages option button to see the effects of varying the number of running averages on the
waveform display. There are 2-128 waveforms over which to take the resulting average. Averaging reduces
random noise and makes it easier to see the actual signal.
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