I have a cctv tester the tells me "cable sequence error" on 1,2 but not to sure what it means by that.
I switch the 1,2 with 7,8 on both ends but this caused the inbuilt poe in the NVR to short and shut off. So I'm assuming pairs 7,8 may actually be +, - .
It's a 152m cable run 9m high with a...