Mode conditioning cables (also called gigabit launch cables or mode conditioning patch cords) are designed for Gigabit Ethernet 1000Base-LX network and other applications where both dingle-mode and multi-mode interconnects needed. As Gigabit-LX can use both single-mode and multi-mode cables, when a Gigabit-LX transceiver is operated with single-mode cable and directly coupled to multi-mode cables, an effect known as Differential Mode Delay (DMD) might occur. DMD limit the cable distance lengths for operating Gigabit Ethernet. Mode conditioning cable can enable a single-mode signal to be correctly sent through a multimode network. producing area:China