GarrettCom 1008 - Manual (Page 17)

Magnum 1000 Workgroup Hubs Installation and User Guide (04/02)
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2.4.1 RPM-BNC
The Magnum RPM-BNC repeater module is equipped with a standard
10BASE2 coax connector. This RPM performs full IEEE 802.3 repeater functionality
and is used for 10BASE2 ThinNet (commonly referred to as BNC) connections.
The RPM-BNC module is designed with a special switch-selectable internal
termination function that eliminates the need for a "tee" connector and a 50 ohm
terminator. To take advantage of internal termination, the slide switch should be in the
"DOWN" (or right-side) position. In this configuration, the 10BASE2 segment is
directly attached to the BNC port where it is internally terminated. When the switch is
in the "UP" (or left-side)
position, the BNC port
requires a "tee" connector
(not supplied) and a 50
ohm terminator for
proper termination.
Certain applications may
require a "tee" connector,
used as a tap, to allow the 10BASE2 coax segment to continue on past the RPM-BNC
connection. Magnum BPM-BNC
The RPM-BNC module includes one partition (PART) and one receive (RX)
LED, which are visible from the exterior. (The PART LED is inoperative on Model
1000 Hubs because the logic necessary to drive the LED is not included in the design.)
The RX LED illuminates GREEN intermittently to indicate data is being received.
Important Note: for the RPM-BNC Termination Switch -
DOWN (or right): Internally Terminated
UP (or left): Requires "T" Connector.
2.4.2 RPM-AUI
This module is equipped with a 15 pin female AUI connector and a slide-lock,
and performs full IEEE 802.3 repeater functionality. It is used to provide connectivity
with a 10BASE5 (ThickNet) backbone or to any AUI segments. A transceiver is
required when connecting to a ThickNet segment and the RPM-AUI supports this
convention. The RPM-AUI is also a "universal" Ethernet media interface as it may be
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Internal Termination
Slide Switch Standard BNC
10BASE2 Connector
Partition LED
Receive LED
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