Omnitron Systems Technology OmniMux 400XL User Manual
Page 5
Omnitron Systems Technology, Inc.
5
Self Test Mode
Diagnostic Features
The OmniMux 400XL diagnostic features make it easy to install and maintain. There are
two levels of diagnostics: Self Test and run-time activity and error monitoring.
Self Test
The power-on self test ensures that the OmniMux 400XL is fully operational. When power
is applied to the unit self testing occurs. At the end of the self test all four LEDs will
illuminate briefly. The power LED will illuminate yellow providing a continuous indication
that the external power supply unit is operational.
Run-Time Activity & Error Monitoring
During normal operation the Link and Port LEDs provide continuous diagnostic information.
These LEDs detect and display true link and port activity and data parity errors. This is
accomplished by individual port monitoring and searching for legal frame header patterns.
Upon the detection of a valid frame pattern, a green LED indicator displays the detected
activity. This feature assists in installation and in the selection of correct polarity baluns
and/or setting of the polarity switch.
The data is analyzed for correct parity and the detection of parity error is indicated by a red
LED. This feature facilitates the continuous monitoring of signal and line quality.
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Data is Being Received
OFF
No Data is Being Received
TOP LED
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Data parity error received
OFF
No data parity errors
Normal Mode
8
Omnitron Systems Technology, Inc.
Applications
The drawing on the previous page illustrates four different applications of the OmniMux 400XL.
A. Fiber Optic SuperMux Mode
Application A shows an OmniMux 400XL configured as a super multiplexer (switches 4:5
= Up:Down) connected to the host workstation controller via the DB25 “brick” cable. The
Fiber Optic SuperMux mode integrates the connectivity of several multiplexers in one unit.
Each port link in the multiplexer mode may support any mixture of the eight host ports. For
example, port link 1 may carry the data for host ports 0, 1, and 2, while port link 6 may carry
the data for host ports 3 through 7. The Fiber Optic SuperMux mode makes the OmniMux
400XL most versatile 5250 connectivity device in the industry.
Remember that host port numbers must be uniquely assigned
among the various demultiplexer or demux star destinations
B. Fiber Demultiplexer
Application B shows an OmniMux 400XL configured as a demultiplexer (switches 4:5 =
Down:Up). Up to eight stars with fiber link capability (such as the OmniMux 400XL or
OmniMux 400) may be connected to the unit in this manner. Note that the host link is made
via the fiber optic link port in Application B.
C. Fiber Demux Star
Application C shows an OmniMux 400XL configured as a demux star (switches 4:5 =
Down:Down). Workstations and printers may be directly connected to the OmniMux 400XL
in demux star mode. Remember to set the port address on switches 6-8 when in demux star
mode. Note that the host link is made via the fiber optic link port in Application C.
D. Fiber Star
Application D shows an OmniMux 400XL configured as a star (switches 4:5 = Up:Up).
OST recommends using the OmniRepeater 400FTD in conjunction with the OmniMux
400XL to provide a complete “fiber-to-the-desk” solution. Note that the host link is made
via the UTP link port in Application D.