I've been using Altium for several years when I've needed to designed boards. However it's all been for simple analog designs and never anything too technical. I'm now trying to take a jump into a board requiring 100Base-TX ethernet.
I'm using a Microchip ENCX24J600 and it seems I need to use run 100 ohm impedance Differential Pairs for the TPOUT+/- and TPIN+/-.
I found a pretty good example video that has explained how to set up Altium here I thought I'd just need to call the manufacture and get the numbers as explained around 4:00 in the video. However I called the PCB shop and they said all I needed to do was provide a sample trace on the side and they'd make it work.
I'm sure this would work but I was wondering if there was a nice standard way that one should specify 100 ohm or 50 ohm for traces (as this seems complete different from in the tutorial I found).
Perhaps I'm making a mountain out of a molehill but I'd rather get things figure out once and then be consistent rather then get a few bad habbits that I'd have to relearn later on.