Fiber Fiber Optics, Modems, Multiplexers, Converters, Video


Model TC3820 
Managed Fiber Optic Gigabit Ethernet Switch w/Self-Healing Ring (6Tx + 2Sx or 2Lx)

6Tx + 2Fx Ports,
  1 or
2-fiber strands


Features   Product or Application Questions (click here)

  • Ring Self-Heals within 50ms

  • Network Management (SNMP, Web, Telnet)

  • IEEE 802.3, 802.3u, 802.3x Compliant

  • 6 Ethernet 10/100-Base Auto-Sensing UTP Ports

  • 2 Fiber Optic 1000Base-SX/LX Ports

  • Standard Single Mode Distance of 50km (optional 100km)

  • Multimode or Single Mode (1300/1550nm)

  • Full or Half-Duplex Operation

  • Industrial Hardened (optional)

  • Hi-Temp2 Version Exceeds NEMA & Caltrans Traffic Control Specs

  • 12VDC, Optional 24VDC, -48VDC, 125VDC or 115/230VAC


Ideal for mission critical fiber optic ring networks, the TC3820 Redundant Ring Gigabit Ethernet Switch provides maximum reliability through its sophisticated redundant ring technology. If a fiber cable or device failure occurs, the data path automatically switches over within 50 msec. to the secondary path to maintain Ring network integrity.

Available with SNMP Management, the Model TC3820 1000Base-SX/LX Switch provides six 10/100M copper ports and two Gigabit fiber ports. It can be daisy-chained and supports distances between switches up to 100 km.

The Ring can be single mode or multimode fiber (1300/1550nm) or CAT5 UTP cables. The TC3820 is IEEE 802.3, 802.3u, 802.3x and 802.z compliant.

Industrial Hardened, Rugged or Outdoor versions are available for harsh environments (e.g. Process Control applications in Manufacturing, Utility, SCADA, Transportation, & Traffic Control). These versions exceed all pertinent Utility and Traffic Control environmental and temperature specifications (-40C to 80C).

A Web-based configuration user interface is provided to view and change network settings such as IP Address, Subnet, Gateway, Speed, Half/Full Duplex, Name, Password and other parameters. It also monitors the fiber ring status, alarm conditions, fault locations for local and remote units. The TC3820 can also be configured through a serial console (Out-of-Band).

The TC3820's store-forward switching technology eliminates the congestion problem inherent to the contention-oriented Ethernet CSMA/CD protocol.

Power is 12VDC, optional 24Vdc, -48Vdc, 125Vdc or 115/230VAC. Power redundancy is standard on 12Vdc. The unit is 19" rack mountable. Optical connectors can be ST, FC or SC.

TC3820 Specifications

Data Rates
10/100 Mbps (electrical)    1000 Mbps (optical)
Interface 2 Ethernet 1000Base-SX,-LX
Transmitter ELED, LASER
Receiver PIN Diode
Wavelength 1300nm Multimode
1310nm, 1550nm Single Mode
Fiber Optic Connectors ST, optional FC or SC
Loss Budget*
(1300nm, 1550nm)
Multimode (62.5/125m): 15dB
Single Mode (9/125m): 20dB
Laser Single Mode: 25dB
Ethernet Ports 6 RJ-45 Female
Interface Ethernet 10/100Base-T (auto-sensing)
Standard IEEE 802.3/3u/3x
Bit Error Rate 1 in 10^9 or better
Fault Recovery < 50 msec.
Visual Indicators
System Status Power, Status (8
Port Status (Each Port) 10/100, Act, Link, Tx, Rx, Speed
Dry Contact Normal OPEN
Standard 12VDC @ 500mA
Optional 24VDC, -48VDC, 125VDC or 115/230VAC (with external power cube)
Operating -10 to 50C
High Temp (Optional) -20 to 70C
Hardened (Optional) -40 to 80C
Storage -40 to 90C
Humidity 95% non-condensing
Physical (Standalone/Wallmount Unit)
Height (3.53 cm) 1.4"
Width (18.14 cm) 7.1"
Depth (16.57 cm) 6.5"
Weight (544 gm) 1.2 lbs

Typical Application (Application Questions)

The TC3820 is frequently used to interconnect Remote Programmable Logic Controllers (PLCs) in high bandwidth applications, such as interconnecting traffic control video cameras, that require multiple channels and the reliability of a Self-healing Ring Topology.