Rhodes Chroma Polaris

Am 14.07.19 um 09:48 schrieb 'Paul D. DeRocco' pderocco@... 
[chromapolaris]:
> You should always have a connection between the scope ground and a 
> circuit ground near where you're trying to look.
Just another pitfall: I once mis-seated a connector, so there was no 
ground connection between a troublesome pcb and the supplies. But due to 
the circuits circumstances the pcb itself had created a virtual ground, 
which made me measure "reasonable" values on the pcb itself. My lesson 
from that is, that I now measure the ground lines first.

Florian