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Serial to Fiber Converters

Serial to Fiber Converters

Long-Distance, Noise-Free Serial Data Transmission

Fiber is a robust and inexpensive way of sending data long distances. Unfortunately, automation, access control and data acquisition hardware typically doesn’t come with a fiber interface. The serial RS-232, RS-422 and RS-485 standards are, however, practically ubiquitous in this type of equipment. Serial-to-fiber converters solve this problem. By connecting a serial interface to a serial-to-fiber converter, data can be sent hundreds or thousands of yards in electrically noisy environments without risking corruption by EMI. At the receiving end a second converter turns the optical signals back into serial for easy connection to a computer. Westward Sales carries industrial-grade serial-to-fiber converters for switching between single or multi-mode fiber and RS-232/422/485.


Fiber Modes, Range and Robustness

A serial-to-fiber converter, sometimes referred to as a “transceiver,” contains both a transmitter and a receiver. Electrical signals are converted to light and light back to electrical signals. Light is transmitted in one of two ways: single-mode and multi-mode. While single-mode offers longer range – potentially many miles - and higher bandwidth, multi-mode predominates in most industrial and commercial environments.

The effective range of RS-232 is 50' (15.2m) but RS-422 and RS-485 work over distances to 4,000' (1,200m.) Multimode fiber is often used for sending data hundreds or a few thousand feet so competes with RS-422 and RS-485. However, its big advantage is EMI immunity. As industrial environments in particular contain many sources of electrical noise, from welders and motors to transformers and switchgear, fiber has the benefit of eliminating errors.

Product Range

Westward carries serial-to-fibers converters to meet a range of needs and applications. Manufactured by Antaira Technologies, these come with a 5 year warranty. Each converter is available in both multi and single-mode forms, so they pair readily with existing fiber infrastructure. All will accept either ST or SC connectors.

STF-300C RS-232/422/485 to Fiber Converter

When all that’s needed is basic conversion functionality the STF-300C compact unit does the job. Selectable between RS232/422/485, it is available with a single mode option and also offers WDM. It comes in a metal enclosure and needs a 12V supply.

STF-401C Industrial Compact RS-232/422/485 to Fiber Converter

Designed for DIN-rail mounting, the STF-401C multi-mode, (optionally, single-mode) converter handles speeds from 300bps to 921kbps. It needs 9 to 48VDC and provides 15KV of ESD protection.

STF-501C Industrial RS-232/422/485 to Fiber Converter

Fanless and DIN-rail mountable, the STF-501C industrial-grade converter incorporates 2.5 kV of isolation protection and 8 kV of ESD Protection. Front-facing LEDs indicate power, TD/RD, or fiber link problems.

STF-502C Industrial RS-232/422/485 Dual Fiber Converter

With 2.5 kV of isolation protection and 8 kV of ESD Protection, the dual fiber ports and redundant dual power inputs (12 to 48VDC) make the STF-502C converter robust enough for the most challenging environments.

Westward Sales Combines Serial with Fiber Transmission Systems

Serial devices are used in many industries but achieving reliable data transmission over long distances is often difficult. With a serial-to-fiber converter RS-232/422/485 data can be sent long distances without fear of corruption or error. Contact a Westward Sales product specialist for further information.

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Antaira STF-300C RS-232/422/485 to Fiber Media Converter, Multi or Single-Mode or WDMThe STF-300..
Antaira STF-401C Serial to Fiber Media Converter, Multi or Single-Mode, SC or ST ConnectorThe ST..
*** DISCONTINUED ***  This product is discontinued and there is no designated replacement. Avai..
Patton FiberPlex FOI-2990 Extends Relay and Control Signal over Fiber OpticsThe FOI-2990 series ..
Patton Electronics TD-1280 and TD-1281 RS-232 Isolator and Extender over Fiber OpticsThe FiberPl..
Patton FiberPlex TD-1580 and TD-1581 RS-422 and EIA-530 Isolator and Extender over Fiber OpticsT..
Patton Electronics TD-7280 Line Level Stereo Audio, Serial, and Control Extender over FiberThe f..
Patton 2089 RS-232 to RS-485 Serial Converter with Handshaking, Interface PoweredPatton Electron..
Black Box ME662A Serial to Fiber Media Converter, Single-Mode, SC or ST ConnectorExtend Async RS..
*** DISCONTINUED ***  This product is discontinued but available while supplies last. Consider ..
Serial, Fiber, Converters