Notes from the factory
Short, technical notes on media converters, SFP optics and industrial fiber links. Every figure quoted here is printed in our factory's catalogue, with the page cited — where the catalogue is silent, the article says so and points at the quotation instead of guessing.
1 article · new notes added as buyers ask new questions
Latest · 4 Nov 2026 · 8 min read
Three boxes turn up in almost every fiber quote: a media converter, an SFP module and a switch with a fiber uplink. They are priced next to each other and they do different jobs — here is how to tell which one a link actually needs.
1780 words · 8 sections
Where to go next
Mark the devices at each end, the fiber type, the distance and the power available in the cabinet. We answer with the converter, the optic for each span and the supply each cabinet needs.