The FOI-1GBT provides complete electrical isolation for 1000BASE-T Gigabit Ethernet communications. The unit has an automatic MDI/MDIX switch over capability that allow users to use either a straight or crossover cable for all LAN configurations. The copper interface is fully automatic. If TP+ and TP- are reversed, the unit will automatically swap the polarity internally. Similarly, if the transmit and receive pairs are reversed, the unit will automatically swap both pairs internally. Therefore, either a crossover or straight cable can be used.
The unit can be used in areas of high electrical noise or in and out of RF shielded enclosures. The fiber optic cable is not susceptible to interference caused by impulse noise, crosstalk, or EMI. Privacy of communications is also enhanced because the fiber optic cable does not radiate any emissions. In addition, fiber optic cable offers much longer transmission distances than copper wiring. Traditional 1000BASE-T Cat5e cabling is limited to a maximum distance of 100m, but multimode optics on the unit can extend the distance to 550m, while singlemode optics can further extend the distance to 5km.A typical link consists of two FOI-1GBT, one at each end of the network, with a duplex fiber optic cable between them.
Flexible Mounting and Powering Options
The FOI-1GBT is part of the FOI line of products designed for ruggedized mil applications. It is housed in the familiar FOI shielded can enclosure. For standalone applications it can be powered by adding a PSQ-4909 AC supply or a PSQ-4920 DC power supply (not included). Optionally, up to 8 FOI units can be mounted on CMA chassis adapters and installed in an RMC-3101 or RMC-2101 rack mount chassis. The units are powered redundantly by a common back plane connection.