I've just bought one of these (first installation tester). Playing around trying to get used to it, I can't get a reading higher than 0.00 Ohms on the loop impedance test. I've tried it on the furthest points on the loop at home and also on a commercial install.
Also, what is the Zi measurement it gives you on this test? When you turn the unit on and the whole LCD screen shows up you can see there are also Zs and Zr measurements at the top next to the Zi, yet they're not shown on the picture in the manual or mentioned anywhere.
I'm confused, do I need to get the unit changed to Zs to get a proper reading from it? It's a full UK spec unit with UK plug etc so can't see why it wouldn't come out of the box ready for use over here.
Maybe (probably) I'm being daft but as I said it's my first tester and this has thrown me a bit, I expected to just have a Zs setting on the wheel, showing up small resistances just above 0.
Also, what is the Zi measurement it gives you on this test? When you turn the unit on and the whole LCD screen shows up you can see there are also Zs and Zr measurements at the top next to the Zi, yet they're not shown on the picture in the manual or mentioned anywhere.
I'm confused, do I need to get the unit changed to Zs to get a proper reading from it? It's a full UK spec unit with UK plug etc so can't see why it wouldn't come out of the box ready for use over here.
Maybe (probably) I'm being daft but as I said it's my first tester and this has thrown me a bit, I expected to just have a Zs setting on the wheel, showing up small resistances just above 0.