The Data Connect
DCE/SFM Serial Fiber Modem 

sfm double pic

The Data Connect Serial Fiber Modem provides a fiber modem solution to extend RS232 or RS45 transmission distance up to 2km over multimode fiber or up to 120km over single mode fiber. The modem is equipped with multiple interface circuits, for connection to RS232, RS423, or RS485/422 (2 or 4 wire). The Data Connect SFM secures data transmission over EMI resistant fiber at speeds up to 256Kbps for RS232 or up to 1024Kbps for RS422/485. When the Data Connect is linked to the Data Connect SFM-RM card, it allows network engineers to get greater functionality through advanced SNMP features. The network administrator can manage any serial fiber modem module from anywhere on the network and detect any link loss and maintain each loop.


  • Extend serial transmission from 2 to 120km over fiber
  • Selectable data I/F for RS232/423/422/485/TTL
  • Selectable two or four wire RS485/422
  • Selectable three or five wire RS232/423
  • SNMP management features with SFM Chassis
  • Speeds up to 256kbps for RS232 (Async mode) and RS423
  • Speeds up to 1024kbps for RS485/422 and TTL
  • Support auto-adjustable function, no extra attenuator needed



6 pin screw block connector fro RS-485/RS-232/RS-422 serial asynchronous port and SC, ST or FC 155M fiber port

Operating Wavelength
1310nm or 1550nm, MM, SM, WDM

Operating Distance
2Km on 62.5/125um fiber, up to 120Km on 9/125um fiber

Optical connector
SC, ST, or FC available

Front LEDs
PWR, Data, Test, Fiber Link

External 90-260VAC switching adapter 12VDC@1A with NEMA1-15(2 blades only), US type main plug

0–50°C (Operating); 0—90% (Storage)

20—80% non-condensing (Operating); 0—90% (Storage)

less than 5W

Dimensions (W x D x H)
85.6mm x 122.6mm x 20mm

310g (Without AC adapter)

CE, FCC Class A

257,063 hours

Ordering Information

Call 301.924.7400 X25 for Special Sale Ordering Information on Option