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890-007 Rev. A 01/28/99 Page 4 © 1999 RadioLAN, Inc.
• The amber Fault LED illuminates for several seconds during the power-on diagnostic sequence. When the
CPU is operating, this LED is normally extinguished.
• The green Status 1 LED illuminates when the CPU detects the presence of the distant CPU. When the CPU
is operating, this LED normally illuminates when the near and far CPUs are active.
• The green Status 2 LED illuminates when the CPU detects the presence of data passing through the wireless
link. During normal CPU operation, this LED flickers when near and far CPUs are active.
One end of the CPU features a button and two ports:
• MDI/MDI-X selector button
• 10BaseT port
• Local port
MDI/MDI-X Switch
The MDI/MDI-X selector button switches the jack’s pin assignment of transmit and receive data wire pairs for the
10BaseT port.
Use MDI-X configuration when the remote end of the wires is connected to a network station. For example, use
this setting when connecting the CPU to a 10BaseT Network Interface Card or to an MDI port with a 10BaseT
concentrator.
Set the switch for MDI configuration when the remote end of the wire is connected to a 10BaseT concentrator or a
hub.