Hi Dave,
Originally Posted by This is from the faq
1. What is a network isolator?

A network isolator is an electrically insulating separation device for Ethernet-based networks. It disconnects all the electrically conductive connections between the connected network peripherals and the connected device, and typically provides protection against DC and AC voltages of 4 kV and greater.
At the same time, it makes possible an almost loss-free transmission of high frequency AC signals with frequencies greater than 1 MHz, which are used in the Ethernet protocol for signal transmission.
What do you exactly mean by high frequency noise? What is it's source/root cause?

Of course the proof of the pudding is in the eating. Also, as you quite rightly state, a true side to side comparison with the Giso would be the only definitive way to go.

Shaun

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