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TECHNICAL SPECIFICATIONS
Connectors and Pinouts
350-8697 DGy Model 201 User Guide 136
. . . . .
ETHERNET
. . . . . . . . .
CONNECTOR
CONNECTOR TYPE AND PINOUTS
The Ethernet connector is a standard RJ-45 type connector.
Figure A-2. Ethernet connector (viewed from rear of chassis)
The 8 pin RJ-45 Ethernet connector has the following signals:.
Table A-2. Ethernet Connector Pinouts (EIA/TIA 568B)
Pin Signal Wire Color
1 TX Data + White/Orange
2 TX Data - Orange
3 RX Data+ White/Green
4 Blue
5 White/Blue
6 RX Data- Green
7 White/Brown
8 Brown
STANDARD CABLES
Standard Ethernet cables are available commercially in many different
lengths. The standard cable is wired pin for pin (straight through) which
means that pin 1 of the connector at one end of the cable is wired to pin
1 of the connector at the opposite end of the cable. This type of cable is
used to connect the DGy 201 directly to the network — typically using an
Ethernet hub or switch. To connect directly from a PC to the DGy 201, a
crossover cable must be used (see the following section for details).
CROSSOVER CABLES
To connect directly from a PC (such as a laptop) to the DGy 201 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 as a straight through
cable, using the pin assignments shown in
Table A-2. At the other end
of the cable, the TX and RX interconnections are exchanged (crossed
over).
Ethernet uses balanced differential signals on twisted pairs of