FOI-4431-R-ST - Isolator for V.35, for connection to DTE, 6 Mbps, RFI Suppressed, Multimode ST optics, Power Options Sold Separa
by PATTON

The Patton Model FOI-4431-R-ST provide end-to-end conversion, extension, and electrical isolation of V.35 circuits. Multimode optics can extend the distance to 2km, while singlemode optics can extend the distance to 20km. The units 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. Patton recommends “T” units for high security applications because they have been TEMPEST tested and approved.

The units are transparent to all handshaking protocols, and can accept data and clock signals up to a maximum rate of 6.144 Mbps. A regeneration switch on the FOI-4341 enables users to toggle between synchronous applications that require send timing (ST), and asynchronous or synchronous applications that require terminal timing (TT). They support tail circuit and null modem functions for DCE to DCE or DTE to DTE communications. Alternate interface units (RS-232 or RS-422) may be installed at the opposite end, allowing the user to create an isolated interface converter.