Know your gear
Finisar's FCBG110SD1Cxx 10 Gb/s SFPwire SFP+ active optical cables are designed for use in 10-Gigabit Ethernet links. No host electrical transmitter pre-emphasis is required. No host electrical receiver linear equalization is required. Host board designers using an EDC PHY IC should follow the IC manufacturer's recommended settings for interoperating the host-board EDC PHY with a limiting receiver.