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OmniMux
400
Twinax-Over
Fiber Multiplexor/Star Hub for iSeries |
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A
5250 Twinax-over-Fiber Multiplexor Star Hub for iSeries AS/400
Overview
The OmniMux? 400XL is
a multifunctional 5250 Twinax over fiber super-multiplexer-star. It
concentrates 8 ports from a local or remote controller and delivers
them to a maximum of 8 different distant locations via 8 fiber pairs.
The 400XL performs the function of up to 8 standard OmniMux 400
multiplexers or fiber converters
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- Twinax 5250 and 5250 Express compatible multiplexer
that concentrates AS/400 or system 3X Twinax cables and delivers them
to distances up to 25,000 feet via a fiber pair, twisted pair or a
single Twinax.
- Seamlessly connects to IBM AS/400 and 3X local and
remote Twinax controllers and workstations.
- Operates with traditional Twinax cabling or modern
fiber and twisted pair wiring.
- Retiming repeater technology regenerates and reclocks
data, eliminating clock jitter and noise.
- Digital Phase Locked Architecture provides
acquisition of data rates of 1 Mbps for 5250 or 2 Mbps for 5250
Express (-2%, +4%), resulting in high immunity to noise and crosstalk.
- Twinax or RJ11/45 connectors and polarity controls
provide easy installation and flexibility.
- Clear display and software independence make
installation and monitoring intuitive and easy
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here for more information on AS/400 & iSeries Wiring Products
Description
The OmniMux 400 is an IBM compatible
multiplexer that provides part or full local or remote 5250 and 5250
Express Twinax controller connectivity to a distant location. It replaces
up to eight AS/400 Twinax cables with a single link. This link may be a
Twinax, twisted pair or a multimode or single-mode fiber pair. Optionally,
the OmniMux can eliminate the Twinax distribution box ("brick")
and provide a direct single cable connection to the host controller,
replacing all host controller Twinax with a single DB25 cable. The OmniMux
supports up to 56 addresses per link.
The OmniMux operates as a multiplexer (Mux),
a demultiplexer (Demux), a demultiplexer-star (Demux-Star) or a star.
In the Mux and Demux modes, the OmniMux operates
in pairs. On the host side, the Mux is connected to the local or remote
controller?s Twinax connectors, concentrating their Twinax ports into a
single link. At the far end, the Demux recreates each host port. Each port
behaves as the original host port it is recreating. It can connect to the
distant workstations via Twinax daisy chains, twisted pair star hubs, such
as the OmniStarTM, or via fiber to desk repeaters, such as the
OmniRepeater FTD.
In the Star mode, the OmniMux delivers
twisted pair or Twinax connectivity to the workstation while providing
fiber connectivity back to the host end. The fiber conversion at the host
end can be done using any OmniRepeater fiber converter.
The Demux-Star mode is used for
multi-drop applications, when seven or less workstations at the far end
are required. In this configuration, the OmniMux with an OmniMux XL
multi-port mux supports the multi-drop requirement and allows a single
host port to be selected for delivery to the far end.
The OmniMux utilizes a Digital Phase
Locked Architecture (PLA). It facilitates data synchronization of data
rate variations of up to -2% to +4%. It also facilitates a high degree of
noise and crosstalk immunity. Each port is monitored and each data packet
is analyzed for validity and errors. Noisy, shorted or open ports are
automatically ignored and only valid data is processed. The retransmitted
data is repeated, regenerated and reshaped; this ensures its reliable
delivery to its destination.
The Express models operate with both the
5250 and 5250 Express protocols. Each port provides data rates of 1 Mbps
for standard 5250 and 2 Mbps for 5250 Express protocol.
The host and workstations can be
connected via Twinax, RJ11/45 twisted pairs or a 25-pin DB25 cable. The
twisted pair polarity control allows interface to different baluns.
Utilizing two links simultaneously
provides a hot backup connection for fault tolerance in critical
applications.
The OmniMux diagnostics detect and
display true port activity and parity errors. Each port is monitored for
valid frame header patterns, a detected pattern is displayed via a
per-port green Activity LED. The data is analyzed for parity errors; a
detected error is displayed via a per-port red Error LED. These features
assist in installation and monitoring of the OmniMux operation.
The OmniMux 400 is completely software transparent and
no setup or any changes are required.
Operation
Inputs: The
OmniMux 400 is built around a Digital Phased Locked Architecture (PLA). It
allows the independent monitoring and processing of data signals at each
individual port, discriminating between true data and noise. A priority
mechanism increases isolation between individual ports, reducing any
crosstalk effect. The incoming Manchester encoded data is over-sampled at
a rate of 16 samples per bit cell. This sampling rate is instrumental in
the digital filtering of noise. A unique clock extraction technology
facilitates the synchronization to data, with frequency variations of -2%
to +4%.
Processing:
Once the data has been recovered and synchronized, it is processed
internally for validity. The processor analyzes the Frame Header,
expecting at least 3 Sync bits followed by a Code Violation. When a legal
Frame Header is detected, the port is "marked" active and the
data is allowed to be retransmitted.
Outputs:
The retransmitted data is fully regenerated and reclocked. Lost sync bits
are restored, and the data is reclocked at a 50% duty cycle, eliminating
any accumulated phase shift and clock jitter. The regenerated signal is
restored to its nominal shape and amplitude and the pre-distortion logic
compensates for anticipated phase shift and attenuation.
Displays:
Per port true data activity and parity errors are displayed by green and
red LEDs. The green activity LEDs assist in monitoring signal strength and
polarity. The red Parity Error LEDs assist in monitoring connectivity
quality, signal strength, impedance mismatches and reflections.
Auto Link Backup: Utilizing
two links simultaneously provides link redundancy. The primary F/O link
can be backed up by a "Standby" Twinax or UTP link. Switching
between the primary and secondary links is done automatically by the
hardware. The Activity LEDs report the activity of each link.
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Sample
Application
In this application, four
AS/400 controller ports must be extended via fiber across a
campus to a second building.
The host (a) is connected to
the Mux (c) using baluns and UTP cabling (b). A fiber optic
cable (d) connects to the Demux (e) which connects each port to
a UTP star that provides UTP connectivity to each workstation
(f).
Application 2. Remote
Controller Extension
In this application an
existing Twinax cable, which is used to connect a single port
with seven workstations, is being reused to increase the number
of ports at a distant site to four and service up to 28
workstations. The workstations at the far end are to be
connected via Twinax.
In this implementation, a 5494 type remote
controller (a) is connecting the four Twinax ports (b) to the
Mux (c) which concentrates them onto the existing Twinax link
(d). The Twinax link cable connects to the far end Demux (e)
where the original ports are regenerated and provide
connectivity to the 28 workstations. As required the
workstations are connected via Twinax directly from the Demux.
Application 3. OmniMux
As a Fiber Optic Star
In this example, a
low-cost solution is desired for connecting a single AS/400 host
port via fiber to a twisted pair distribution star.
In the proposed implementation, the host (a)
Twinax port which originates at the local controller's
distribution "brick" is converted into twisted pair
via an impedance matching balun. The UTP wire is converted into
fiber (d) using an OmniRepeater 400FTD (c). The fiber connects
the far end OmniMux (e) which is operating in a fiber star mode
and connects to each workstation (f) via UTP cables.
Application 4. Multi-Drop
Demux-Star Layout
In this example,
several buildings across a campus are required to be connected
to the host via fiber. Some use one port with fewer than seven
devices and others use multiple ports with more than seven
devices.
In this case an OmniMux 400XL (c) is connected
via a DB25 (b) cable to the host (a) and provides the central
fiber distribution point with each fiber link being able to
connect any number of ports. The example shows one fiber (d1)
connecting to a regular Demux (e1) with two ports connecting to
its end workstations via Twinax (f1) and a second fiber
connecting to a Demux-Star (e2) servicing a single port directly
from its UTP ports (f2).
Application 5. DB25
and Local Port Connectivity
In this case it is
required to minimize Twinax cabling at the host end and connect
UTP workstations at the host and at the distant ends.
To minimize cabling, a single DB25 (b) cable
replaces the "brick" and all Twinax cables, and
connects the host (a) to the Mux (c). The local workstations (g)
are connected via a local star. The far end Demux (e) is
connected via the fiber link (d) and the far end workstations
(f) are connected to the Demux via a star. Note that the two
stars use different host ports from their Muxes.
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Ordering Information
Standard
5250 Multimode Fiber |
Standard
5250 Single- Mode Fiber |
5250
Express Multimode Fiber |
5250
Express Single- Mode Fiber |
Description |
2700 |
2720 |
2740 |
2760 |
8
Ports, RJ11/45 to F/O and RJ11/45 |
2701 |
2721 |
2741 |
2761 |
8 Ports, TWX to F/O
and TWX |
2702 |
2722 |
2742 |
2762 |
4
Ports, RJ11/45 to F/O and RJ11/45 |
2703 |
2723 |
2743 |
2763 |
4 Ports, TWX to F/O
and TWX |
2704 |
2724 |
2744 |
2764 |
2
Ports, RJ11/45 to F/O and RJ11/45 |
2705 |
2725 |
2745 |
2765 |
2 Ports, TWX to F/O
and TWX |
2710 |
2730 |
2746 |
2766 |
8
Ports, RJ11/45 and DB25 to F/O and RJ11/45 |
2711 |
2731 |
2747 |
2767 |
8 Ports, TWX and DB25
to F/O and TWX |
2750 |
2770 |
2748 |
2768 |
8
Ports, DB25 to F/O and TWX |
9100-DB25-30 |
DB25 Cable, 30 feet
(for other distances, consult factory.) |
Legend:
TWX= Twinax
F/O= Fiber Optic |
Technical Specifications
Item |
Feature / Description |
Protocol: |
IBM 5250 and 5250
Express for Systems AS/400 and 3X |
Devices Supported: |
All Twinax IBM / compatible devices
(terminals and printers) |
Interface: |
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Host/Device:
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Eight (8) Twinax
or
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Eight (8) Twinax and DB25 or
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Eight (8) UTP or
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Eight (8) UTP and DB25
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Mux Link:
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Fiber Optic
(pair) and Twinax or
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Fiber Optic (pair) and UTP
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Mating
Connectors Supported: |
Fiber Optic:
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ST |
Twinax:
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IBM 7362229 or equivalent |
UTP:
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RJ11 pins 3-4
active or RJ45 pins 4-5 active |
Cable
Types: |
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Fiber Optic:
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50 /125, 62.5
/125, 100/ 140 ?m |
Twinax:
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IBM 7362229 or equivalent |
UTP:
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Level 3
(EIA/TIA
568): 24 AWG solid copper 100 +/- 15 ohms @ 1.0 Mhz 7.8 db per
1000 ft. @ 1.0 Mhz (shorter distance @ lower grade) |
Data
Rate: |
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Standard 5250:
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1 Mbps -2%, +4% |
5250 Express:
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1 or 2 Mbps -2%, +4% |
Supported
Distances: |
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Host/Device
to Mux:
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Twinax:
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5,000 ft. |
UTP:
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3,000 ft. |
DB25
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50 ft. |
Mux
to Mux: |
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Twinax:
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5,000 ft. |
UTP:
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3,000 ft. |
Multimode
fiber:
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15,000 ft. |
Single-mode
fiber:
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30,000 ft. |
Indicators: |
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Power:
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Yellow LED (1) |
Activity:
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Green LED (10) |
Parity
Error:
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Red LED (10) |
Link:
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One
(1) Twinax, One (1) Fiber or
(1) RJ11/45, one (1) Fiber |
Port:
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One
(1) Twinax, or one (1) RJ11/45 (RJ11 pins 3-4, RJ45 pins 4-5 are
standard) |
Data
Rate: |
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Standard 5250:
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1
Mbps -2%, +4% |
5250 Express:
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1 or 2 Mbps -2%, +4% |
Physical
features: |
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Rackmounted:
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W:19.0"xD:6.0"xH:1.75" |
Tabletop:
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W:17.5"xD:6.0"xH:1.75" |
Weight:
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8
lbs. |
Power: |
115 or 230 VAC, 150
mA. |
Temperature: |
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Operating:
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0 to
40 degrees C |
Storage:
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-40 to 75 degrees C |
Humidity: |
Up to 90%
(non-condensing) |
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here for more information on AS/400 & iSeries Wiring Products
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