Analyzing signal details, Looking at a noisy signal, Nalyzing – B&K Precision 2552-2559 - Manual User Manual

Page 136: Ignal, Etails

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The following steps show you how to use the oscilloscope to capture a

single event.

1. Set the Probe option attenuation to 10X and set the switch to 10X

on the probe.

2. Trigger set up:

1) Press “TRIG MENU” button to show the “Trigger Menu”

2) Under this menu, set the trigger type to “edge”, Edge type

is “Rising”, source is “CH1”, trigger mode is “Single”,

coupling is “DC”

3) Adjust the horizontal time base and vertical scale to the

satisfied range

4) Turn the “LEVEL” knob to adjust the trigger level

5) Press the “RUN/STOP” button to start capturing

When the trigger conditions are

satisfied, data appears on the display

representing; the data points that the oscilloscope obtained with one

acquisition and press the RUN/STOP button again rearms the trigger circuit

and erases the display.

Analyzing Signal Details

You have a noisy signal displayed on the oscilloscope and you need to

know more about it. You suspect that the signal contains much more detail

than you can now see in the display.

Looking at a Noisy Signal

The signal appears noisy and you suspect that noise is causing problems in

your circuit. To analyze the noise better, follow these steps:

1) Press the “ACQUIRE” button to see the acquire menu.

2) Press the “Acquisition” option button or turn the “Universal” knob

to select “Peak Detect”.

3) If necessary, press the “DISPLAY” button to see “Display menu”.

Turn the “Universal” knob to adjust waveform intensity and grid

brightness to see the noise more clearly.

4) Peak detect emphasizes noise spikes and glitches in your signal,

especially when the time base is set to a slow setting.

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