UEH4002 User Manual

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 Category 5 has been superseded by Cat 5e cabling which includes improved data integrity to support high-speed communications.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

 

 

 

 

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