2016-09-04, 13:50
(2016-09-04, 11:45)kevinmcc Wrote: The PCB is marked A1 as positive and A2 as negative. Since the antennas are passive I don't believe polarity matters. Worse case the wave form sensed on one ferrite could be 180 degrees out of phase as that of another ferrite. I don't believe phase matters.
We use balanced inputs, so polarity make no sense.
It made sense with single ended inputs (Green and Red), where the outer winding went to ground (a sort of shielding)
A1-A2, balanced input. A3, ground (for shielding where needed)
Ferrite antennas are right wounded, so the signal is still the same if you rotate it 180°
/Richo