Ethernet Cabling E-11

Ethernet Cabling The Ethernet port of the CoreBuilder allows you to connect the CoreBuilder to an Ethernet network for Network Management Station (NMS) connectivity (such as Transcend™). The Ethernet port is a standard RJ-45 connection of a terminal side.

Follow these guidelines for 10BASE-T cabling:

Use only copper, unshielded twisted-pair (UTP) wiring. Do not use flat, multiconductor cable (for example, silver satin), which is often identified by solid colors such as red, green, yellow, or black.

Use two twisted-pairs for each link.

Use twisted-pair wire that is 22-26 AWG (0.5 millimeter) in diameter.

￿Use twisted-pair wire with an impedance between 85 and 115 ohms.

Make sure that the maximum twisted-pair link length from the system to any potential workstation location is 100 meters (328 feet).

Cable Pinouts Management connections may be established with a direct cable link to a PC-AT serial port, or via modem. The following tables detail cable pinouts for 9 and 25 pin PC-AT links, and for a modem connection.

CoreBuilder 7000 Serial Port

The CoreBuilder 7000 provides a standard DB-9 connector for management connections (refer to Figure E-1). Table E-8 details the pinout and functions for this connector. The CoreBuilder 7000 plays the standard role of a DCE.

Figure E-1Serial Port Pinouts

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3Com DUA3700-0BAA04 manual CoreBuilder 7000 Serial Port, Figure E-1Serial Port Pinouts

DUA3700-0BAA04 specifications

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