Time
2 hours 16 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

Rj45 Color Patterns, UTP & Max Length We continue this lesson examining in detail the Rj45 connector and examine its physical make up. For examples, unlike the Rj11, the Rj45 cable has an 8-pin connector a multi-color wiring scheme. You'll learn what TS68A & B are and why there is a difference in how the color patterns are used. We also diagram to explain and clarify the importance of each colored wired, and why the wire-to-pin color coding match-up must be consistent, and explain what Vampire pins are and how data is established across the wires.

Video Transcription

00:04
R R J 45
00:07
has color patterns. These twisted wires on the end, they are color coded are two color patterns are going to be our T 568 A and R T 568 Be commonly referred thio, a color scheme and the color scheme.
00:24
These color patterns. It really doesn't matter which one we use. We can use a or we can use B
00:28
as long as we keep them consistent in our environment. What the's color patterns do is it allows us to make sure that when we're making a particular cable or what we're doing when we're making connectors from one end of the cable all the way to the other end wherever that other, and maybe that when we plug both the ends into, say, the switch and the computer
00:48
that they transmit that data across
00:50
the computer across the wire in the way we're expecting them to. If we want a straight cable. If we want just standard connection, say, between a switch and our computer to get that get an Internet connectivity, we're just gonna be using a straight cable with one end of the wire being exactly one end of our wire,
01:10
all the pins being matched up
01:11
in the same order to the colors as the has our wires are toe. Understand this a little bit better. Let's take a zoom in. The connector on the end of our R J 45 is going to look like so with eight pens and eight wires going in channels underneath the pens. Now our eight pins
01:30
are going to be what we call vampire pins.
01:33
When this cable is being created,
01:34
the wire's actually go inside of the clip,
01:41
are pushed inside of the channels in the clip underneath of the pens and then the pens or crypt down on top of the wires, actually piercing the coding and making contact between the metal pins and the metal
01:55
core inside of each of the individual wires. So when we plugged this connector into a computer port and it makes connection with those connectors with those pins in the computer, it sends data across the wires, expecting when it gets to our other end of our cable, everything is gonna match up.
02:13
If this isn't correct. If,
02:15
say, pin number three and pin number four, or switched on the other end, then
02:21
we're not gonna get that data transferred across correctly. It's not going to be transmitting like it's expecting it, too, so we can see how hard that would be if we were trying to connect these connectors on either end and make sure that they're in the right place. If all the wires look exactly the same, it would merely be nearly impossible without having a rip over the rip, open
02:39
the entire cable or do constant tests on each individual wire.
02:44
So in order to
02:46
find a solution for this problem, we have the color coded wires so that we can make sure that we're putting them all in the right order. And we have the two colors code schemes, Skin A in the scheme B
02:59
and again doesn't matter which scheme you use as long as you're consistent in your environment. R R J 45 cables are typically bundled as you tp unshielded twisted pair cabling,
03:09
and they have a maximum length of 100 meters.
03:14
You see how much Sure that is then our 50 miles single mode five or fiber in our 500 meter multi mode fiber. But with R J 4500 meters is going to be our maximum length that we have without signal degradation

Up Next

Peripheral Devices and Connectors

A peripheral device or auxiliary device, is generally defined as any device that connects to and works with the computer in some way

Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
Instructor