GarrettCom Magnum 3000 User Manual

Page 30

Magnum 3000 Stackable Hubs Installation and User Guide (07/06)

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4.2.1 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

Magnum RPM-BNC

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.

The RPM-BNC module includes one partition (PART) and one receive (RX)

LED, which are visible beside the connector. The PART LED illuminates AMBER to

indicate that the segment

has been automatically

partitioned. As soon as

normal reception resumes,

the segment will be

automatically re-

established. 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) = "T" Connector required.

4.2.2 RPM-AUI

Internal Termination

Slide Switch

Standard BNC

10BASE2 Connector

Partition LED

Receive LED