Application Examples
Looking at a Noisy Signal
The signal appe
ars noisy and you suspect that noise is c ausing problems in your
circuit. To better analyze the noise, follow these steps:
1. Push the Acqui
re button to see the Acquire Menu.
2. Push the Peak Detect option button.
Peak detect emphasizes noise spikes and glitches in your signal, especially when
the time base is set to a slow setting.
Separating the Signal from
Noise
Now you want to analyze the signal shape and ignore the noise. To reduce random
noise in the oscilloscope display, follow these steps:
1. Push the Acquire button to see the Acquire Menu.
2. Push the Average option button.
3. Turn the Multipurpose knob to highlight different numbers of averages from
the pop-up menu. As you push the knob to select a different number, you can
see the effects of varying the number of running averages on the waveform
display.
Averaging reduces random noise an d m akes it easier to see detail in a signal. In
the example below, a ring shows on the rising and falling edges of the signal when
the noise is removed.
TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 35
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