I just received a PicoScope 2105 (about 1 week ago) and firstly, I am very pleased with it.
It's is an excellent scope for the price, but it has one annoying feature.
Maybe it's a feature, maybe it is a fault? I hope someone can help me.
If I connect the probe tip, to the ground wire I'd expect to get an almost perfectly flat trace, with almost no ripple at all.
Instead I get constant noise of about 2 to 7 mV, and the sprectrum i sjust wild!
The same noise is evident on all signals that I trace, so I can't tell if I'm seeing real noise or the 'inherent' noise from the scope.
I could probably take some screen dumps if it would help.
Can anyone tell me if this is normal or a fault? Is there anything I can do to mitigate it?