SEL-2814 Fiber-Optic Transceiver/Modem With Hardware Flow Control
Improve safety, signal integrity, and reliability by using two optical fibers instead of wire to transfer bidirectional serial data plus hardware flow-control signals. Apply for instrumentation, protection, automation and other applications that benefit from economical fiber-optic links up to 4 kilometers long.
- Improve Communications Reliability
Use data rates up to 115.2 kbps for a full duplex serial link with up to 4 kilometers of multimode optical fiber. Far less susceptible to EMI/RFI than copper links, with a maximum Bit Error Rate of 10-9. Apply in harsh electrical and physical environments. - Apply Easily
Plug transceiver/modem directly onto a standard 9-pin serial connector (DB-9). No special mounting is required. Uses popular ST® connectors. Requires no jumpers or settings. Eliminate the need for special adapters by using the selector switch to choose DCE or DTE pin usage. - Use Control Lines to Improve Operation
Use the same transceivers and fibers to simultaneously transfer duplex data plus a control signal in each direction. Use for data flow-control to prevent overrunning buffers, key transmitters, or sense equipment problems. - Choose Best Power Source
Provide power from the host device; no separate power supply or power wiring is needed. Or, if the host cannot provide a control line for power, connect an external power supply to the power-input jack. - Improve Safety
Provides improved isolation from ground potential rise and other electrical hazards compared to copper connections. Eye-safe Class 1 Laser Product.
- Use an SEL-2814 link between an SEL-2032/2030/2020 Communications processor or other master device, and a device that uses hardware flow-control (“handshaking”) to prevent overflowing buffers.
- Connect radios with integral EIA-232 serial ports to monitoring and control equipment, using an SEL-2814 link. Assert the control line to the radio to key the transmitter. Use the other control line from the radio to sense radio or carrier status.
- Sense the status of devices by monitoring a control line indicating loss of power, loss of connection, printer paper problem, or other alarm conditions.
These devices can communicate with SEL-2814 models when connected through fiber-optic cables. Control lines are only supported with another SEL-2814. No IRIG-B signal is transferred:
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Fiber Compatible Device (option)
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Optical Fibers
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SEL-2814
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2
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SEL-2812
|
2
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SEL-9220 Fiber-Optic Adapter
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2
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SEL-2600 RTD Module (SEL-2812 compatible)
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1
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SEL-2664 Field Ground Module
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1
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SEL-700 Series Relays (Fiber-Optic Port)
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2
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SEL-2411, -2414, -2431, -2440 (Fiber-Optic Port) |
2
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SEL-2505, -2515 Remote I/O Modules (SEL-2812 compatible) |
2
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