JohnSwenson;549005 Wrote: > ...The current flowing through the interconnect shield will induce a > small voltage across the shield, and since at the far end of the cable > the input circuit sees the voltage between the center pin and the > shield, the noise voltage developed across the shield is added the the > signal you want and gets amplified along with it. > > You can get rid of this affect by using balanced interconnects because > the signal the receiver sees has nothing to do with the voltage on the > shield. I'm pretty sure this is why people like balanced better, its > not that the balanced system picks up less noise on the signal wires, > but because its immune to ground current noise on the shield...
In addition to using balanced interconnects when possible, I believe introducing great quality line-level transformers can be a solution too - even when using unbalanced interconnects. Both methods defeat the potential ground loop on the signal line, balance the impedences of the pos/neg signal lines, and also provide much better EMI/RFI noise immunity (as I understand it - please do correct me if I'm mistaken). -- NewBuyer ------------------------------------------------------------------------ NewBuyer's Profile: http://forums.slimdevices.com/member.php?userid=7862 View this thread: http://forums.slimdevices.com/showthread.php?t=78959 _______________________________________________ Touch mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/touch
