2204A voltage showing on ground

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Richard Paris
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Joined: Sun Nov 21, 2021 7:24 pm

2204A voltage showing on ground

Post by Richard Paris »

Sorry i'm quite new to using a scope.
My question is i see a voltage of up to 4-5 volts just connecting the ground to the car on both A and B chanel neither of the positive sides are connected.
Is this an issue?
If I connect the positive to bat supply it reads ok.

Thank you

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