Fiber Bypass Units OBU-102

- Supports Fast, Gigabit, and 10 Gigabit Ethernet fiber connections in SC/ST/LC connectors
- Optical bypass switching time < 10 ms
- Low insertion loss
- Redundant dual 12/24/48 VDC power inputs
- IP30 rugged metal housing
- Configurable boot delay range from 0 to 45 seconds by rotary switch
- operating temperature range from -20 to 70°C 
- Low power consumption 0.72 W

OBU-102 series is an industrial optical fiber bypass unit installed to protect a 100M/1G/10G fiber optical network from large-scale failure resulted during power outage or network maintenance.

The bypass unit has 2 inline ports that are used to connect to the local Ethernet switch, 
and 2 network ports that are used to connect to the other 2 remote Ethernet switches in the main network.

When the bypass unit receives power, it will forward network traffic to the local switch. When the bypass unit loses power, it will bypass the local switch and send traffic between 2 remote switches. The bypass unit is expected to be powered from the 
same power source with the local switch to ensure power loss makes the 
bypass unit change to bypass mode.

Moxa OBU-102 fiber-optic bypass units add bypass relay functionality to any network node. In linear topologies, a single power outage or node failure can take out an entire chunk of the network, because communications to all the network nodes further down the line are also cut.

With relay bypass, that node is bypassed in the event of a failure, and the rest of the network is unaffected. OBU-102 Series sits between a node and the network to add bypass relay functionality to any network switches that do not already support this important function. In normal operations, the OBU-102 Series acts as a gateway that forwards network traffic to and from the network switch. However, if power is lost, the OBU-102 will bypass the unpowered switch and simply pass network traffic to the next switch in the relay.