Electronics > Repair
Fluke PM6666 counter freezing after 3 seconds from turning on.
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thinkfat:
Aand you forgot to switch the probe to 10X again  :palm:

Really, make this a habit when you probe digital signals or anything above audio frequencies: Your probe in 1X mode has a bandwidth of maybe 5 MHz, which means you basically get to see the fundamental tone of the square wave and all higher order harmonic will be attenuated a lot. So you see a distorted sine wave at best, but not the true waveform.
pizzigri:
Oh my god! But you pegged me perfectly: I'm an audio enthusiast, and I mainly play with amplifiers etc
Give me a moment, I'll redo it...
pizzigri:
Here it same conditions
thinkfat:
OK. Is that with or without the GPIB card connected? I'd like to see both.
pizzigri:
Without, this one is with. The shape doesn’t change much but amplitude is less
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