... cableFor RJ45, RJ12 & RJ11 A. Functions: 1. Can test correspondingly double-twisted cables 1,2,3,4,5,6 ... RJ45 andBNC,ST-248 tests RJ45 and BNC. B. Test of double-twisted cables; switch on the power ( ... circuited, none of the corresponding lights is on . C. If test patch panels or wall plate outsells, two cables which ... ) will be connected to the tester. D. If test cables of the same axes, BNC turns on when ...