1.5 Copper Cabling

What is twisted pair copper cabling?

Balanced pair operation, having two wires with equal and opposite signals.

How are twisted pair copper cables written?

Transmit+, Transmit-/ Receive+, Receive-.

What does the twist in twisted pair copper cabling do?

Twist keeps a single wire constantly moving away from interference, with the opposite signals are compared on the other end.

Different pairs in the same cables have

different twist rates.

Do cables have speed?

No, electrical are sent over the cable with signal encoding determine the data transfer rate.

How must cables be manufactured?

Specific standards, using the IEEE 802.3 Ethernet standards.

What are cable standards called?

Categories.

How do you determine the minimum cable category to meet the standard?

Check the IEEE standard to determine the minimum cable category to meet the standard.

What are coaxial cables?

Two or more forms share a common axis.

What are coaxial cable used for?

TV or digital cable.

What are twinaxial cable?

Two inner conductors, often called a twinax.

What are twinaxial cables common for?

10 Gigabit Ethernet.

What is a plenum-rate cable?

Traditional cable jacket with polyvinyl chloride (PVC).

What are fire-rated cable jackets?

Fluorinated ethylene polymer (FEP) and Low-smoke polyvinyl chloride (PVC).

What’s a con of plenum-rated cables?

May not be as flexible and may not have the same bend radius.