Low Speed RS-422/530 (MIL-STD-188C-114A) Products
FiberPlex FOI-2591 Fiber Optic Isolator/Converter/Modem - EIA-530/RS-422; mission critical packaging


Packed in rugged military style metal enclosure, the FOI-2591 Series units Isolate and Extend Serial (EIA-530/RS-422) over fiber at rates up to 256 kbps


Overview
Not recommended for new designs. See FOI-4451 for a functional replacement.
 
Used in pairs, the FOI-2591 (to DTE) and FOI-2951 (to DCE) provide end-to-end conversion, extension, and electrical isolation of EIA-530/RS-422 circuits. Multimode optics extends the distance to 2km, while singlemode optics extends the distance to 20km. The units are transparent to all handshaking protocols, and can accept data and clock signals up to a maximum rate of 256 kbps. A regeneration switch on the FOI-2591 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. An alternate interface (V.35 or RS-232) may be installed at the opposite end, allowing the user to create a fully isolated interface converter.

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. Patton recommends “R” units for high security applications because they have added filtering and shielding for RFI suppression.

FOI version units can be mounted in several redundant powering chassis; rack and wall mount options including Tempest and NEMA alternatives.

Applications
A typical link consists of an FOI-2591 at the Data Communication Equipment (DCE) and an FOI-2951 at the Data Terminal Equipment (DTE) with a duplex fiber optic cable in between.

FiberPlex FOI-2591 application diagram


Features
  • Serial Data (TIA/EIA-422, MIL-STD-188-114A and FED STD 1030A) Fiber Modem and Converter
  • Multimode extension of up to 1.2 miles (2 km), singlemode extension up to 12.4 miles (20 km)
  • Supports Data Rates from DC to 256 kbps
  • Tail circuit and null modem functions for DCE to DCE or DTE to DTE
  • Pairs with other FOI with V.35 or RS-232 interfaces for interface conversion
  • Rugged metal enclosures with RFI shielding
 
Ordering
# Model # Description Availability
1 FOI-2591-R-ST Isolator for EIA-530/RS-422, for connection to DCE, 128 Kbps, Multimode ST optics, RFI suppressed, Power Options Sold Separately Special Order
 
 Accessories
2 FOI-2591-RZ-ST Isolator for EIA-530/RS-422, for connection to DCE, High Z inputs, 128 Kbps, multimode ST optics, RFI suppressed, Power Options Sold Separately Special Order
 
 Accessories
3 FOI-2591-ST Isolator for EIA-530/RS-422, for connection to DCE, 128 Kbps, Multimode ST optics, Power Options Sold Separately Special Order
 
 Accessories
4 FOI-2591-Z-ST Isolator for EIA-530/RS-422, for connection to DCE, High Z inputs, 128 Kbps, multimode ST optics, Power Options Sold Separately Special Order
 
 Accessories
5 FOI-2951-R-ST Isolator for EIA-530/RS-422, for connection to DTE, 128 Kbps, RFI suppressed, Multimode ST optics, Power Options Sold Separately Special Order
 
 Accessories
6 FOI-2951-RZ-ST Isolator for EIA-530/RS-422, for connection to DTE, High Z inputs, 128 Kbps, RFI suppressed, multimode ST optics, Power Options Sold Separately Special Order
 
 Accessories
7 FOI-2951-ST Isolator for EIA-530/RS-422, for connection to DTE, 128 Kbps, Multimode ST optics, Power Options Sold Separately Special Order
 
 Accessories
8 FOI-2951-Z-ST Isolator for EIA-530/RS-422, for connection to DTE, High Z inputs, 128 Kbps, multimode ST optics, Power Options Sold Separately Special Order
 
 Accessories

 


 
 
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