Oscilloscope Connections.

jethro99 · Mar 4, 2022

Got a new oscilloscope to play with. 126 page user manual but with no advice as to how to properly connect the test probes.
Would someone take a look at the illustrations below and let me know if I am thinking correctly? It would be appreciated.

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IRstuff · Mar 4, 2022

Oscilloscope ground should NEVER be connected to anything except a ground. I nearly got got hit by a chunk of an exploding IC when I connected an oscilloscope ground to chassis, which I naively assumed was ground; it was not and it was actually hot.

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zeusfaber · Mar 5, 2022

Agree with IRStuff. A safer approach to taking the measurement you want in your second example would be to take a ground from the vehicle, then use two separate probes on the stator outputs and set the scope to display the difference between the two channels.

A.

IRstuff · Mar 5, 2022

An oscilloscope with two inputs will typically have a Ch2-Ch1 function to get differential measurements without compromising the ground.

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Oscilloscope Connections.

jethro99

Student

IRstuff

Aerospace

zeusfaber

Military

IRstuff

Aerospace

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