Extron FOX I/O 1616 SM (part number 70-771-22) — a 16x16 singlemode fiber optic input/output board for Extron FOX Matrix modular switchers.

Fitted into one slot of a FOX Matrix 320x or FOX Matrix 14400 chassis, this board brings sixteen fiber ports to the frame, each pairing a transmit and a receive link on LC terminations — 16 Tx and 16 Rx, 32 LC connectors altogether. The 1310 nm transceivers are what set this card apart from the multimode version: they drive singlemode plant out to 30 km (18.75 miles) against a 13 dB optical loss budget, and Extron also rates them for multimode fiber at the same 1310 nm wavelength. That reach is what makes campus-to-campus and inter-building links practical without repeaters.

Key Capabilities

• Sixteen singlemode fiber inputs and sixteen outputs from one single-slot card
• 32 LC connectors per board, individually isolated and buffered
• 1310 nm optics reaching 30 km (18.75 miles) with an Extron singlemode transmitter and receiver
• 13 dB maximum optical loss budget and -18 dBm typical receiver sensitivity
• Channel data rate up to 4.25 Gbps at unity gain, 8 bits per channel across R, G and B
• Hot-swappable, and freely mixable with multimode boards in the same frame

Where It Is Used

Singlemode boards suit distances copper and multimode cannot cover: linked hospital campuses, stadiums and arenas, university estates, refinery and utility sites, airport and military installations, and broadcast plants where a control room and a remote facility must share the same routed video and audio.

Specifications at a Glance

• Fiber type: singlemode, 1310 nm nominal peak wavelength
• Transmission power -5 dBm typical; maximum receiver sensitivity -18 dBm typical
• Optical loss budget: 13 dB maximum
• Board power draw: 23.5 watts
• Operating range: +32 to +122 °F (0 to +50 °C), 10% to 90% noncondensing

Also referenced as Extron FOXIO1616SM, FOX-I-O-1616-SM, part number 7077122.