How to Measure Electrical Noise Using an Oscilloscope: Guide for Encoders and Power Supplies

Question:

Hello everyone, I could really use your assistance in measuring electrical noise that is causing our encoder readings to fluctuate. I'm looking for guidance on how to configure an oscilloscope to detect noise on the following components: - The signal cable of the encoder - 120VAC power supply - 24VDC power supply It's becoming quite frustrating trying to pinpoint the source of this electromagnetic interference (EMI). Additionally, I've attached a reference image of a similar oscilloscope that we currently use. Thank you for your help! Best regards, Sam

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Discover a collection of helpful video tutorials designed to enhance your skills! Check them out here: [Video Tutorial 1](https://youtu.be/pKXPqApOYfk) and [Video Tutorial 2](https://youtu.be/D5GF4B3TzTQ).

What kind of encoder are you using? Is it a differential signal encoder? Is it operating at 24V? Additionally, are you supplying power to the encoder with a 120VAC source?

Thank you for your support!

I'm not supplying the encoder with 120VAC power; instead, I'm interested in analyzing the noise levels on the 120VAC line. While I don't have the specific model number of the encoder, it is designed for positioning applications.

Every encoder allows for positioning functionality, though the performance can vary significantly among different models. Additionally, when it comes to assessing noise levels, understanding the type of connection and interface used by the encoder is crucial. Are you also looking to enhance your skills in using an oscilloscope?

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