Media converter 10/100/1000Mbps, MultiMode, 850nm, SC Duplex


Fibrain FMU-AMA12G-85S-55M-E converter is an ideal choice for Ethernet users who want to extend the maximum data transmission length. Converter can work with multi mode fiber optic cables. Electrical port support transmission speed of 10/100/1000 Mb/s with autonegotiation and can determine cable type. Converter can be installed in Fast Ethernet and Gigabit Ethernet networks, works in store-and-forward mode and passes VLAN tagged frames and JumboFrames up to 9kB. Using high quality multi mode optical transceivers allows to set up a link with maximum length of 550m.

External power supply assures reliability and makes maintenance easier. Converter can operate in 2U 19″ rack chassis for 16 devices with redundant power supply.


  • 10/100/1000Base-T to 1000Base-SX signal conversion
  • Transmission distance: up to 550m (OM3 fiber or better)
  • Multimode optical transceiver (850nm)
  • Passive cooling
  • High quality components
  • MAC address auto-learning and auto-updating
  • Store-and-forward architecture
  • Supporting FDX flow control or HDX back pressure
  • Supporting Auto-negotiation for RJ45 interface
  • Supporting frames up to 9k bytes long
  • VLAN tagged frames pass-through
  • Information about device work/state on LED diodes: port activity, power, transmission speed, RJ45 link, optical link
  • MTBF exceeding 500,000 hours

Technical parameters

Dane techniczne

Transmission speed 10/100/1000Mbps
Standards IEEE802.3 10Base-T Ethernet
IEEE802.3u 100Base-TX Fast Ethernet
IEEE802.3ab 1000Base-T Gigabit Ethernet
IEEE802.3z 1000Base-SX Gigabit Ethernet
IEEE802.3x Flow control
Wavelengths 850nm
Certificates CE, RoHS
Transmission reachOptical port: up to 550m (over OM3 fiber or better)
RJ45 port: CAT5: 100m
Optical parametersTX power: -9dBm ~ -3dBm
RX sensitivity: -18dBm
RX overload: -3dBm
PortsCopper: RJ45
Fiber: SC Duplex
Conversion method store-and-forward
BER <1/1000000000
LED display PWR, FXL, TXL, 100M, 1000M, FDX
Power supply5V/1A DC (external, included in package)
Power consumption<5W
Working conditionsTemperature: 0 ~ 50 ℃
Humidity: 5%~90% non-condensing
Storage conditionsTemperature: -40~85 C
Humidity: 5~95% non-condensing
Weigth0.15kg netto; 0.40kg brutto
Dimensions28mm x 92mm x 117mm (height x width x depth)