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I was checking continuity on a G1000 harness for 3 years before a new guy in Tulsa showed me my meter's auto-ranging was lying to me.

I got a weird 0.8 ohm reading on a known-good ground path that should have been under 0.5, and he asked if I'd manually set the range, which I never did because the auto function always seemed fine until that exact moment. Has anyone else had a meter trick them on a critical low-resistance check?
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3 Comments
nancy_smith
Holy cow, three whole years? That's terrifying. Auto-range just quietly failing like that on a ground check is a nightmare. I'd be second-guessing every reading I'd ever taken. Makes you want to go back and manually check everything now.
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henderson.wesley
Right? How do you even trust your gear after that? I had a clamp meter do something similar, auto-ranging got stuck on a high setting and gave me a false low reading on a motor. Took me a week of head scratching to figure it out. Now I do a quick manual range check on a known source before every big job. That silent failure is the worst part, no warning at all.
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the_eric
the_eric10d ago
Ever check your leads, @nancy_smith?
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