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Re: So I could also make a twisted pair

For an RCA plug digital IC, I would stick with the proper 75 ohm impedance cables.

Now some folks have used the twisted pair with shield as a digital IC, but I do not personally recommend it, and have always recommended the Belden 1695A with the added shield as the prefered digital IC for 75 ohm SP/DIF use (RCA plug digital IC's).

The twisted pair recipe might work really well if paired with an AES interface, which looks for a 100 ohm impedance, and uses XLR connectors. Here, my recommended analog construction, using the pin 1 ground connect wire wrapped OUTSIDE the shield ofthe twisted pair, would come very close to the mandated AES 110 ohms characteristic Z, and provide many of the benefits needed for clean digital signal transmission.

As for silver vs. copper for a digital IC, to me, this is a much more subtle difference than the insulation or shielding differences.
Jon Risch


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  • Re: So I could also make a twisted pair - Jon Risch 18:14:03 12/04/06 (1)


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