IBM 1PA, Руководство по эксплуатации, установке и обслуживанию

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Product Highlights
The IBM 7299 Express Products for AS/400:
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Reduces costs by letting you use inexpensive unshielded twisted-pair (UTP)
cabling to connect your devices to the following:
– AS/400 host
– System/38 host
– System/36 host
– 5494 Remote Control Unit
– 5394 Remote Control Unit
– 5294 Remote Control Unit
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Creates a star topology that provides flexibility for adding, removing, and
moving devices
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Reduces transmission delays when using optimized mode and 2 Mbps mode
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Supports the 5250 Express Data Stream or traditional 5250 devices in 1 Mbps
mode
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Provides the flexibility of reconfiguring active pins and polarity to accommodate
changes in your cabling scheme
The 7299 active hubs also provide:
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Receiver circuitry that improves impedance-matching and reduces reflection
problems
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True protocol transparency (provided that the polarity and the pinout are
consistent throughout your network), so that you have maximum device
performance and reliability
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Advanced DC filtering and transient suppression for improved immunity to noise
from the AC power line
When used with 6299 baluns, that filter out noise, the 7299 active hubs provide a
clear transmission path and prevent noise from disrupting sessions.
The 7299 Multiplexer also provides:
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8 ports (two clusters of four ports each) multiplexed into a single fiber optic
cable. This maps directly to the latest work station controller (WSC)
implementation in the AS/400. Two polling groups are permitted with one port
in each group active at a time.
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Connection to the AS/400 from the Host Multiplexer by either the DB25 direct
connection or eight individual RJ45 connectors (with appropriate twinax
distribution block and baluns). Set jumpers for each one of the 8 ports to
choose the method of connection. Jumper-selectable pair callouts in the RJ45
connection permit 4/5, 3/6, and 1/2 parings.
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Connection to twinax devices (Hub or Terminal) by either the DB25 connection
(with gender changer and twinax distribution block) or eight individual RJ45
connectors.
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The backbone media is 62.5/125 micron multi-mode fiber optic cable. The
length of fiber run is similar to the 6299 Family. The 7299 Multiplexer uses the
ST-type fiber optic connector. Overall length is influenced by a number of
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Planning, Installation, and Maintenance Guide