Kathy Quinlan wrote: > yeap, agilent (HP's semiconductor division) make high speed optic > transmitters and receivers :o) Thanks, Kat, but I need a black box, input TTL / output fibre and viceversa, not just a transmitter or receiver. There is a lot of such devices for Ethernet and SONET/SDH, but seems to be none for just TTL signals. Cheers, Diego. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu