Omnitron Systems Technology OmniMux 400XL - Manual (Page 2)

Omni 400XL Series
2
DESCRIPTION
General: The OmniMux TM 400XL is a versatile
multifunction AS400/3X 5250 fiber connectivity
unit. It inter-operates with all of Omnitron’s Omni
series products and is ideal for a wide range of 5250
fiber applications. Being software independent, it is
easy to install and manage. It performs the
following functions:
•
Fiber optic star
•
Fiber optic Super multiplexer
•
Fiber optic demultiplexer
•
Fiber optic demultiplexer star
As a fiber optic star, the XL provides per device
fiber to the desk connectivity. On the host end
(Link), the star may be connected to an RJ11/45 or a
fiber source. On the device side it connects to each
device via a fiber converter such as the
OmniRepeater
TM 400FTD.
As a SuperMux TM the XL connects to the host using
a DB25 cable and eliminates the twinax distribution
“Brick”. The DB25 cable connects the eight host
ports from the local controller and the XL
multiplexes (condenses) these ports into a single data
stream which is then forwarded to eight fiber links.
Each one of the eight links delivers all multiplexed
twinax host ports to a distant destination via fiber.
At the distant location each fiber is connected to a
second OmniMux
TM
400 which demultiplexes the
ports to their original host port designation. Based
on the application at the distant end, the far end
demultiplexer can be an XL or another OmniMux
TM
converting the ports back to twinax, twisted pairs or
to fiber, for fiber to the desk applications.
As a demultiplexer, the XL demultiplexes the data
stream received from the fiber link back into 8 host
port data streams on fiber.
As a demultiplexer-star the XL combines the
demultiplexing function with a star function. By
selecting a specific port, that port alone can be
selected from the multiplexed data stream and each
of the fibers can serve as an individual device port.
Processing: The OmniMux TM 400XL utilizes a
digital Phase Locked Architecture (PLA). This
technology facilitates reliable data acquisition with
data rate variations of -2% to +4%. This facilitates
consistent connectivity with all IBM and compatible
devices and host models. It also facilitates a high
degree of noise and crosstalk immunity.
The XL monitors all incoming data streams
simultaneously, checking for data activity and
errors. Once the valid data frame is recovered, it is
processed and checked. True data activity or errors
are displayed for each link using LED displays thus
helping in monitoring network operation and
problem isolation.
When a valid data frame header is recognized, the
data frame “Cuts Through” and is retransmitted. It
is fully regenerated and restored to its full original
amplitude, and any lost start bits are reconstructed
and regenerated. Each data bit is reshaped and
reclocked at a 50% duty cycle eliminating any clock
jitter and ensuring reliable connectivity
Inputs and Outputs: The OmniMux TM 400XL
features the following inputs and outputs:
•
Host ports 0-7 for host DB25 connection
•
Link 0 for host side RJ11/45 copper connection
•
Link 1 for host side ST fiber connection
•
Port-Link 0-7 for ST fiber connection to distant
multiplexers or to local stars or devices
In SuperMux TM mode, the DB25 host ports 0-7
connect to the host’s workstation controller and
replace the 8 port twinax “Brick”. On the far side,
the Port-Links 0-7 connect to far side
demultiplexers.
In demultiplexer mode, Link 0 (copper link) or Link
1 (fiber link) connect to a host side multiplexer. On
the far end, Port-Links 0-7 connect to far end stars.
In star mode, Link 0 or Link 1 connect directly to a
workstation controller (via a balun or a fiber
converter), or to a demultiplexer. Port-Links 0-7
connect to twinax devices via fiber converters such
as the OmniRepeater
TM 400FTD.
In demultiplexer-star mode, Link 0 or Link 1
connect to a host side multiplexer. On the far end,
the Port-Links 0-7 connect to individual devices via
fiber converters.