Media converter 10/100/1000Mbps, 28dB, SingleMode, LC Duplex, CWDM 1270-1610


Fibrain FGMS-CxxL-28B converter is an ideal choice for Ethernet users who want to extend the maximum data transmission length. Converter can work with single 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 optical CWDM transceivers with 28dBm power budget allows to set up many fast, long reach connections on minimum number of optical fibers. Converters are available with SFP modules operating on 16 wavelengths compliant with ITU G.694.2 (1271nm ~ 1611nm). 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-ZX signal conversion
  • Transmission distance: up to 80km*
  • Singlemode SFP CWDM module (included in package, wavelength is model dependent, please check datasheet)
  • 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

Technical details

Transmission speed10/100/1000Mbps
Standards IEEE802.3 10Base-T Ethernet
IEEE802.3u 100Base-TX Fast Ethernet
IEEE802.3ab 1000Base-T Gigabit Ethernet
IEEE802.3z 1000Base-EX Gigabit Ethernet
IEEE802.3x Flow control
WavelengthModel dependent, please check datasheet for details
CertificatesCE, RoHS
Transmission reach Optical port:
III window up to 120km
II window up to 60km
RJ45 port: CAT5: 100m
Optical parametersTX power: 0dBm ~ 5dBm
RX sensitivity: -28dBm
RX overload: -5dBm
PortsCopper: RJ45
Fiber: LC Duplex
Conversion method store-and-forward
Latency <10us
BER <1/1000000000
LED displayPWR, 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
Weigth 0.15kg netto; 0.40kg brutto
Dimensions28mm x 92mm x 131mm (height x width x depth)