I was just wanting some hints and tips on designing a fiber based communications system with a PIC We were wanting to use a 17C756 as the base for our telemetry system and since there are 3 fibers in the cable, why not use them instead of RS485? Baud Rate?? anything over 50K would be wasted probably. Any ideas ? Homebrewed preferably. Straight digital. i.e.. no op amps. Maybe one amp stage then into a Schmidt trigger then into a buffer or something like that. Thanks in advance ! James & Ili Irving, TX. 75038