They can also be used to communicate up to 2 km in a noisy environment. The link can be used for interface conversion by selecting different FOls at each end. Versions are available for systems such as IBM 3270 and Wang 7550. The units may be ordered in an RFI suppressed version.
Battery backup is available in most cases.
Optical interface can be either SMA or ST connectors. FiberPlex also offers a line of waveguide filters that allow the user to pass fiber cable through a shield without compromising its RFI containment performance. The patented design of these waveguides allow installation of fiber-optic cables with connectors already attached. They provide both electrical and mechanical interconnection. Some Interface Converters are suitable for synchronous and asynchronous applications and allow selection of inverted data transfer.