S.I. Tech Model 2850: Ethernet RJ45 to Fiber Optic Transceiver

S.I. Tech Model 2850 Ethernet RJ45 to Fiber Optic Transceiver


  • Supports 10Base - FL and FOIRL and IEEE 802.3 Standards
  • Link Status, Collision, Receive Data, Transmit Data, and Power LED indicators
  • ST or SMA optical connectors
  • Connects directly to STP cable devices
  • Multimode or Single mode option



S.I.Tech 2850 Ethernet Fiber Optic Transceiver is designed to extend the distance of Ethernet based STP (Shielded Twisted Pair) LAN's on a fiber optic cable up to 10 km. The transceiver has RJ45 connector allowing connection to the STP network devices and provides ST or SMA fiber optic connectors.

Five LED indicators provide a visible verification of transmission status and transceiver functions.

  • Ordering Information
  • Specifications
  • Operating Distance
  • Typical Applications

Model 2850 Ordering Information:

Product Description
2850 Ethernet Stand Alone 10 Mbps RJ45 Optical Bit-Driver

Model 2850 Specifications:

Operation Mode: 10 Mbps Ethernet
Input/Output Interface: RJ45, 8 pin jack
Transmission Line Interface: ST optical connector standard (SMA option)
Transmission Distance: 6600 ft. (2 Km), (5 Km and 10 Km option)
Transmitter Output Power: 15 Microwatts into 62.5/125 Micron fiber
System Wavelength: 820 nm (1300 nm Multi or single mode option)
Data Rate: 10 Mbps
Transmit Start Up Delay: 10-9
Receiver Sensitivity: 1 Microwatt @ 820 nm
LED Diagnostic: TX/RX/Link/Col/Pwr
Operating Temperature: 0 C to 50 C
Metal Enclosure: 7.5" W X 3"H X 7"L (19 X 7.6 X 17 cm) (Rack Mounting Option, Part#2850 - R)
Weight: 3 lb. (1.36 kg)
Input Power: 110 VAC, 50/60 Hz, 10W 230 VAC version - 2850V

Specifications subject to change without notice.

Model 2850
Operating Distance for Fiber Optic Cable:

Multi-mode or single mode distances

Fiber Size

100 5 2000 6600
62.5 4 2000 6600
50 3 2000 6600
10 SM* 1 7000 23000

* Single mode, 1300 nm option

Optical unit connection: Connect the optical transmission line to the Tx and Rx receptacles. Note which cable channel goes to Tx or Rx by noting cable imprint. On the other end, reverse the connection.

Model 2850
Typical Application:

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