HP A6602 Installation Manual page 17

Standard cable: Also called straight-through cable. At both ends of a standard cable, wires are

crimped in the RJ-45 connectors in the same sequence. A straight-through cable is used to
connect a terminal (for example, PC or router) to a hub or LAN Switch. The cables delivered
with the A6602 are straight-through cables.
Crossover cable: At both ends of a crossover cable, wires are crimped in the RJ-45 connectors

in different sequences. A crossover cable is used to connect a terminal (for example, a PC or
router) to another terminal. You can make crossover cables by yourself as needed.
Table 1-17 Straight-through cable pinouts
RJ-45 pin
1
2
3
4
5
6
7
8
Table 1-18 Crossover cable pinouts
RJ-45 pin
1
2
3
4
5
6
7
8
You can refer to the table above when distinguishing between or preparing these two types of

Ethernet cables.
When preparing Ethernet cables, please follow the chromatogram given in the table to arrange

the wires. Otherwise communication quality will be affected even if the devices at both ends are
connected.
When preparing Ethernet cables, use shielded cables preferentially for electromagnetic

compatibility (EMC).
6) Fiber connecting a 1000 Mbps optical Ethernet interface
You can use a single-mode or multi-mode optical fiber to connect a 1000 Mbps optical Ethernet
interface to an Ethernet. You can select proper fibers for the installed 1000Base-FX SFP
transceiver (GE SFP for short). Since the optical interfaces on these SFP transceivers use LC
Signal
Tx+ White (Orange)
Tx– Orange
Rx+ White (Green)
— Blue
— White (Blue)
Rx– Green
— White (Brown)
— Brown
Signal direction
Tx+ White (Orange)
Tx– Orange
Rx+ White (Green)
— Blue
— White (Blue)
Rx– Green
— White (Brown)
— Brown
Category-5
Signal direction
twisted pair



—
—

—
—
Category-5
Signal direction
twisted pair



—
—

—
—
RJ-45 pin
1
2
3
4
5
6
7
8
RJ-45 pin
3
6
1
4
5
2
7
8