Hi Bill,
I have attached a schematics describing the test.
This is a medical device which is emitting a 1 MHZ RF signal via a handpiece.
According to the standard, the leakage current to earth must not exceed 50mA whilst I receive 65mA.
I have tried already to place a Toroid on the GND line inside the device for 1 Mhz signal and it improved it a bit....and also tried to feed the internal circuity directly with an external laboratory power supply which should be greatly isolated....but I cannot detect where the leakage comes from...
Even if I disconnect completley the gnd line to the device result stays the same, how can it be? what closes the circuit to enable this current flowing?
Any idea is appreciative.