When I am using my oscope to measure duty cycle and pulse width from my phone line, I must float my oscope to see the signal.
I'll explain... if I connect the oscope chassis ground to earth ground i can not trigger the scope to see the sgnal.
If I float the scope's ground then I can.
Does anyone know why?
I'll explain... if I connect the oscope chassis ground to earth ground i can not trigger the scope to see the sgnal.
If I float the scope's ground then I can.
Does anyone know why?