UEH4002 User Manual
13
Technical Glossary
Category 5 (Cat 5) Network Cabling
Category 5 cable is commonly also referred to as Cat 5. This cabling is available in either
solid or stranded twisted pair copper wire variants and as UTP (Unshielded Twisted Pair)
or STP (Shielded Twisted Pair). UTP cables are not surrounded by any shielding making
them more susceptible to electromagnetic interference (EMI). STP cables include
shielding over each individual pair of copper wires and provides better protection against
EMI. Category 5 has been superseded by Cat 5e cabling which includes improved data
integrity to support high-speed communications.
USB Cables
USB cables have two distinct connectors. The Type A connector is used to connect the
cable from a USB device to the Type A port on a computer or hub. The Type B connector
is used to attach the USB cable to a USB device.
RJ45
The Registered Jack (RJ) physical interface is what connects the network cabling (Cat 5)
to the Local unit and Remote unit. You may use either the T568A scheme (Table 1) or the
T568B scheme (Table 2) for cable termination as the UEH4002 uses all four pairs of the
cable. RJ45 connectors are sometimes also referred to as 8P8C connectors.
RJ45 Pin Positioning
Table 1 - T568A Wiring
PIN
PAIR
WIRE
CABLE COLOR
1
3
1
WHITE/GREEN
2
3
2
GREEN
3
2
1
WHITE/ORANGE
4
1
2
BLUE
5
1
1
WHITE/BLUE
6
2
2
ORANGE
7
4
1
WHITE/BROWN
8
4
2
BROWN
