Long Distance HIPPI Modem

Overview
The Model 20000B Long Distance Fiber Modem is a stand-alone rack-mountable unit providing a fiber optic transmitter/receiver for long distance transmission of information using the serial HIPPI protocol. The unit can be connected to any HIPPI host for extension of the host interconnect distance from 25 meters to 20 kilometers.

Host Computer Interface
The Long Distance Fiber Modem can be driven by any host supporting the ANSI X3.183-1991 HIPPI-PH (HIPPI Physical) Standard. It will support the full rate of data transmission by the host under this standard, up to the maximum 800 Mbps in each direction.

Delay Buffering for Long Distance Connections
The Long Distance Fiber Modem provides internal round-trip bufering and logic to support continuous operation of a single HIPPI chanel over distances of 20km or less. This enables users to avoid the round-trip connection delay which would normally be incurred over long links, and lets facilities establish reliable dedicated channels between high volume data producers and consumers. At the same time, the modem supports normal HIPPI throttling protocol, so that interconnected hosts using the link will not require software modifications in order to operate properly.

Metropolitan Area Networks
This technology provides a standard, high data volume technology for use in metropolitan area networks. HIPPI is known for its ability to transfer large quantities of error-free data at high speed, and this device makes it feasible to consider using HIPPI technology for plant-wide and city-wide applications.

Singlemode Fiber and Multimode Fiber options
The Long Distance Fiber Modem will function ably and reliably over either singlemode or multimode fiber. When used with 8/125 micron singlemode fiber, the transceiver will function reliably over distances up to 20 kilometers. When used with 62.5/125 micron FDDI-grade multimode fiber, the transceiver will function reliably over distances up to 0.3 kilometer.

Reliability of Transmission
The Long Distance Fiber Modem has expected bit error rates of less than 1x10^-14, when the modem is used with good quality cables within the maximum distance specification.

FEATURES Full duplex HIPPI channel using dual fibers Full HIPPI bandwidth of 800 Megabits per second (Mbps) on each duplex channel Ports transmit and receive reliably over distances of up to 20 kilometers with singlemode fiber Expected Bit Error Rate of 1x10^-14 or less over maximum supported distances Ports utilize standard SC fiber connections BENEFITS Provides long distance extension of existing HIPPI products Provides the high data reliability and integrity of HIPPI channels for dedicated links Compact size, moderate power requirements, and low cost Download this datasheet in PDF (Acrobat) form	Overview The Model 20000B Long Distance Fiber Modem is a stand-alone rack-mountable unit providing a fiber optic transmitter/receiver for long distance transmission of information using the serial HIPPI protocol. The unit can be connected to any HIPPI host for extension of the host interconnect distance from 25 meters to 20 kilometers. Host Computer Interface The Long Distance Fiber Modem can be driven by any host supporting the ANSI X3.183-1991 HIPPI-PH (HIPPI Physical) Standard. It will support the full rate of data transmission by the host under this standard, up to the maximum 800 Mbps in each direction. Delay Buffering for Long Distance Connections The Long Distance Fiber Modem provides internal round-trip bufering and logic to support continuous operation of a single HIPPI chanel over distances of 20km or less. This enables users to avoid the round-trip connection delay which would normally be incurred over long links, and lets facilities establish reliable dedicated channels between high volume data producers and consumers. At the same time, the modem supports normal HIPPI throttling protocol, so that interconnected hosts using the link will not require software modifications in order to operate properly. Metropolitan Area Networks This technology provides a standard, high data volume technology for use in metropolitan area networks. HIPPI is known for its ability to transfer large quantities of error-free data at high speed, and this device makes it feasible to consider using HIPPI technology for plant-wide and city-wide applications. Singlemode Fiber and Multimode Fiber options The Long Distance Fiber Modem will function ably and reliably over either singlemode or multimode fiber. When used with 8/125 micron singlemode fiber, the transceiver will function reliably over distances up to 20 kilometers. When used with 62.5/125 micron FDDI-grade multimode fiber, the transceiver will function reliably over distances up to 0.3 kilometer. Reliability of Transmission The Long Distance Fiber Modem has expected bit error rates of less than 1x10^-14, when the modem is used with good quality cables within the maximum distance specification.

SPECIFICATIONS / STANDARDS
Physical Dimensions: (HxWxD) 17" x 12.5" x 1.75" (43 cm x 31.6 cm x 4.4 cm) Weight: 3.6 lb. (1.6 kg) Standards Compliance Serial HIPPI ANSI X3.300-1997 HIPPI-SERIAL Standard. Power Supply: Autoranging 100-240 VAC, 50/60 Hz Power Consumption: 56 Watts max	Environmental Environment Temperature 32° - 104° F Humidity 10% - 90% non-condensing Altitude to 10,000 feet (3,048 meters) Safety Certifications (pending) EN 60950 CSA-C22.2 No. 950-93 Electromagnetic Emissions Certifications (pending) FCC Class B CSA/TUV
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