Quadra User's Guide

CONNECTOR TYPES
Ethernet Connector
350-7951 Quadra User’s Guide 104
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ETHERNET CONNECTOR
CONNECTOR TYPE
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AND PINOUTS
The Ethernet connector is a standard RJ-45 type connector.
Figure C-5.
Ethernet connector (viewed from rear of chassis)
The 8-pin RJ-45 Ethernet connector has the following signals:.
STANDARD
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ETHERNET CABLES
Standard Ethernet cables are available commercially in different lengths. The
standard cable is wired pin for pin (straight through), meaning that pin 1 of the
connector at one cable end is wired to pin 1 of the connector at the opposite end.
This type of cable is used to connect Quadra directly to the network, typically
using an Ethernet hub or switch. To connect directly from a PC to the Quadra,
a crossover cable must be used (see the following section for details).
CROSSOVER
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CABLES
To connect directly from a PC or laptop to Quadra without connecting to the
network, an Ethernet “crossover” cable must be used. Crossover cables are
available commercially. In a crossover cable, one end of the cable is wired
using the pin assignments shown in Table C-5
. At the other end, the TX and
RX connections are exchanged (crossed over).
Ethernet uses balanced differential signals on twisted pairs of conductors.
Standard pairs are shown in Table C-5
. For each pair, one wire has a solid
color. The other wire is white with a colored stripe matching the first wire’s
color (e.g., Orange and White/Orange).
Table C-5.
Ethernet Connector Pinouts
Pin Signal Wire Color
1 TX Data + White/Orange
2 TX Data - Orange
3 RX Data+ White/Green
4Blue
5 White/Blue
6 RX Data- Green
7 White/Brown
8Brown
18