Application Exa
mples
Looking at a Noisy Signal
The signal appears noisy. You suspect that noise is causing problems in your circuit. To better analyze the noise:
1. Push Acquire.
2. Push Mode on t
he lower menu.
Mode
Sample
Record
Length
10k
Delay
On |
Off
Set Horiz.
Position to
10%
Waveform
Display
XY Display
Off
3. Push Peak Detect on the side menu.
Sample
Peak
Detect
Hi Res
Envelope
Average
4. Push In
tensity and turn multipurpose knob
a to see the noise more easily.
5. View the results on the display. Peak detect
emphasizes noise spikes and glitches in
your signal as narrow as 1 ns, even when
the time base is set to a slow setting.
Pea
k-detect and the other acquisition modes are explained earlier in this manual. (See page 49, Acquisition Concepts.)
148 MSO3000 and DP O3000 Series Oscilloscopes User Manual
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