EtherCom Model EMB11 10/100 TX to 100 FX LK/ACT 10/100 Switch/Media Converter

The EtherCom Model EMB11 is a standalone network media converter that bridges copper Ethernet networks with fiber optic networks. It converts between 10/100Base-TX copper and 100Base-FX fiber interfaces, supporting auto-negotiation on the copper segment and user-selectable duplex modes on fiber. The unit extends network segment lengths, eliminates electromagnetic interference, and provides lightning strike protection.

Built in a compact, rugged steel enclosure, it operates from 0°C to 55°C and draws 7.2 W maximum power. The converter employs store-and-forward switching with modified cut-through frame forwarding for low latency and achieves a forwarding rate of 148,800 pps. It is supplied with a wall-mount 12 VDC power adapter and includes LED indicators for power, speed, duplex, link/activity, and fault status.

Technical Specifications

• Copper Interface: RJ-45 connector; auto-negotiating 10 Mbps or 100 Mbps; auto MDI/MDIX; Cat. 3/4/5 UTP/STP for 10 Mbps; Cat. 5 UTP/STP for 100 Mbps; maximum 100 m segment distance


• Fiber Interface: SC connector (multimode standard); 100 Mbps; user-selectable full or half-duplex; multimode up to 2 km; single-mode up to 50 km (optional)


• Data Rate: 10/100 Mbps


• Forwarding Rate: 148,800 pps


• Switching: Store-and-forward with modified cut-through frame forwarding


• Flow Control: IEEE 802.3x (full-duplex); back-pressure (half-duplex)


• Power Supply: 12 VDC external AC-DC adapter, 110–240 VAC input


• Power Consumption: 7.2 W maximum


• Operating Temperature: 0°C to 55°C


• Humidity: 5% to 80% non-condensing

Key Features

• Dual duplex modes: auto-negotiating on copper; user-selectable on fiber


• Extended fiber transmission distances via optional single-mode configuration


• Compact rugged steel enclosure; stands alone or mounts as module in 19" rack chassis


• LED status indicators: power, 100 Mbps, full-duplex, link/activity (TX and FX), fault

Compatibility & Integration

• IEEE 802.3, 802.3u, 802.3x standards


• FCC Class B, CE Mark, VCCI Class B (Japan)