Patton FiberPlex TD-1280 / TD-1281 RS-232 (TIA-232) to Fiber Isolator and Extender

Patton FiberPlex TD-1280 Fiber Optic Isolator, Converter, Modem for high speed TIA-232
Model: TD-1280
Availability: 3 - 4 Weeks or Less

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Patton Electronics TD-1280 and TD-1281 RS-232 Isolator and Extender over Fiber Optics

The FiberPlex TD-1280 (to DTE) and TD-1281 (to DCE) pair offer a flexible and cost-effective method for extending RS-232 (now known as TIA-232) serial communications. The DB-25 connectors are pinned to support a TIA-232 serial link directly. Transparency and flexibility allow the TD-1280/TD-1281 modules to be configured as 3x2 independent 1 Mbps TIA-232 channels and 5x5 independent 120 kbps TIA-232 channels. By using FiberPlex’s unique technology, all clock, data, and control channels are entirely independent of one another. It supports several configurations:  two (2) bi-directional 1 Mbps TIA-232 serial channels with one (1) unidirectional 1 Mbps TIA-232 channel and five (5) bi-directional 120 Kbps TIA-232 channels; or, three (3) 1 Mbps TIA-232 channels in one direction and two (2) in the other (3x2); or, five (5) 120 Kbps TIA-232 channels in one direction and five (5) in the other (5x5).

This impressive versatility solves a host of serial data communications problems. Limited serial links can not only be consolidated but extended to over 20 km on a single fiber pair. SCADA, telecommunications, automation and control, and broadcast applications benefit from the TD-1280/81 combination. For advanced systems, a ‘Regeneration’ switch on the TD-1281 allows users to toggle between synchronous applications that require Send Timing (ST) and asynchronous or synchronous applications that require Terminal Timing (TT).

Key Features

  • Consolidates and extends RS-232 channels
  • Supports rates from DC to 1 Mbps
  • Multimode extension up to 1.2 miles (2 km)
  • Singlemode extension up to 12.4 miles (20 km) or longer
  • Regeneration switch on the TD-1281 toggles between sync requiring send timing (ST) and async/sync requiring terminal timing (TT)
  • Compatible with TIA-232 / V.28, MIL-STD-188-114A unbalanced type 3, MIL-STD-188C, FED STD 1020A protocols
  • A link requires the TD-1280 and TD-1281
  • Can alternately be used for 3x2 high-speed TIA-232 and 5x5 low speed TIA-232
  • Optional DIN-rail, NEMA enclosures, and 1U rack tray mounting
  • 0 to 50°C operating temperature
  • Power adapter included


TD-1280-C, Fully Compatible TIA-232 with 5 pair 120 Kbps, 2 pair 1 Mbps, DTE (Female), TD Package, SFP Cage Only, includes AC power adapter
TD-1280-L22, Same as above with DTE (Female), 1310 nm Multimode
TD-1280-L5B, Same as above with DTE (Female), 1300 nm Singlemode
TD-1281-C, Same as above with DCE (Male), SFP Cage Only
TD-1281-L22, Same as above with DCE (Male), 1310 nm Multimode
TD-1281-L5B, Same as above with DCE (Male), 1300 nm Singlemode

CategorySerial Connectivity
Total Ports2
Serial Interface
CategorySerial to Fiber
Serial Ports1 RS-232/422/485
Input Voltage7 to 32 VDC at 500 mA
Isolation ProtectionFiber
Connector TypeDB25 (RS-232) and SFP Slot
Dimensions4.5 in (114 mm) 2.75 in (70 mm) 1.66 in (42 mm)
Weight.4 lbs.
MountingOptional DIN-rail, wall, rackmount
LED IndicatorsSIG, SYNC, PWR
Dip SwitchRegeneration Mode
Operating Temperature0 to 50°C
Storage Temperature-40 to 85°C
Download NameFile Size
Patton TD-1280 Data Sheet472.66KB
Patton TD-1280 User Manual2.04MB