Hi All,

I'm new to Amtech and I've been asked to review a model.

I'm looking at circuits that are SWA cables using the armour and an internal conductor as the CPC. There are various earth loop impedance errors listed where the Zs at the load end is too high, but what I can tell, Amtech firstly calculates the Zs using the armour only, and if this is too high it sees it as an error, but it then recalculates using the internal CPC in parallel with the armour to reduce the Zs to an acceptable value. There is a note listed referencing the same cable stating this, so I'm I correct in thinking that even though Amtech says this is an error but it actually isn't because of the note explaining the second calculation.

Steve