Chapter 6: Operation
FAQ: What is the difference between Level 1 and Level 2 and when do I use it? Level 1 verification tests for length, opens, shorts, split pairs (including distance to the fault) along with propagation delay, skew, NEXT, FEXT, and cable category measurements. Level 1 testing uses simulated digital signals to test the cable. Level 2 adds to the testing with the use of real live data from a NIC, hub, or switch. Use Level 1 for new cable installations or anytime a LAN device (hub, switch, PC) is not available.
