IBM 1PA, Operational, Installation, And Maintenance Manual

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Note: A device can be a 7299 Hub, a 6299 Hub, a multiple- or single-address
PC, or a terminal. For 2 Mbps mode, Category 5 cabling or better is
recommended. To document your configuration for the Host Multiplexer, write
the WSC and ports used by the DB25 connection above the DB25 connector,
This should match the pinout jumper settings you selected above and provides
information for future verification and changes.
To document your configuration for each Device Multiplexer, write the Host
WSC and ports provided by the DB25 connection above the DB25 connector.
This should match the pinout jumper settings you selected above and provides
information for future verification and changes.
6. Connect the fiber optic cables to each 7299 Multiplexer. Because the
Multiplexers are in different locations, be sure that you mark the cables for the
Multiplexer and connector (TX or RX) for easier connection.
7. Strain relief all the data cables firmly, but do not crush them. Keep the data
cables away from the power cables.
8. Verify that the power cords are firmly attached to the back of the 7299. Plug
the AC power cord into the power outlet.
When you power on the Multiplexer, a lamp test is performed. Verify that all
the LEDs light for about two seconds before fading to black.
9. Power on all the devices.
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Planning, Installation, and Maintenance Guide