Cat 5 confusion as to which way

[Wilson12]

Something soo simple... cat 5 I’m heading into my am2 exam next week having never terminated the cable. I’ve searched online and I see different configurations everywhere
I’m confused as the numbers don’t line up with the colours the bottom diagram to the table also I’ve seen pictures of the faceplates and they have different colours inside.im unsure which way up also :/
Any help will be greatly appreciated

 

[SparkyChick]

Looks like green is at the top left? They just give that diagram to follow soo it must be green top left?

I'm going to try this once more....

Ignore the diagram/table because it does not match the physical connector you have.

Use the colours printed on the back of the connector next to the termination points (these are clearly visible in the photo of the connector you posted) that correspond with B (also clearly visible in the photo).

 

[shaun1]

Some more info (which may or may not make it clearer)

An RJ45 plug has 8 pins in a line.

These are numbered from 1 to 8 in order, and are always the same for every manufacturer. (With the clip on the bottom and the cable exiting towards you, pin one is on the left)

The socket also has 8 contacts in a row for the 8 pins, again in the same order for eveey manufacturer. But different manucaturers arange the punch down terminals (where you slot the cable) in different positions on the back. For this reason, they have the pin numbers and coresponding colours next to each punch down terminal.

To make it more confusing, there are 2 standards: T - 568A and T - 568B (often refered to as just A and B. T - 568B is almost always used so if in doubt, always go for the colours marked next to B.

So for T - 568 B
1 is always Orange/White
2 is always Orange
3 is always Green/White
4 is always Blue
5 is always Blue/White
6 is always Green
7 is always Brown/White
8 is always Brown

Just look on the back for which number relates to each terminal.

It is important to get the sequence right because the data is transmited down 4 twisted pairs (can be one Tx and one Rx, can be two Tx and Two Rx pairs depending on standard used). Its important that each pair are twisted together and not mixed up.

(I know most of this information has already been covered but ive tried to put it all together in a logical order)

 

[Rpa07]

I’ve got photos saved favourite on my phone and whether making up plug ends or faceplates I always use the photo as reference.
The lit up screen usually keeps me company in dark lofts as a bonus.
Watch a few YouTube videos and save a few screen shots, practice a few and go to sleep.

 

[westward10]

I think you need to speak to your tutor, everyone is giving good advice however, and even though I have never done an AM2 it seems following instructions is key to success.

 

[rsgaz]

Compare these two...

One has blue top left, one has green top left. It is entirely up to whoever designed the PCB to put the colours where they want. The only important thing is that they come out in the right order out of the front.

Unfortunately, you've been given one with the dual colour code, as has been mentioned, 568A and 568B. The USA uses A, the rest of the world uses 568B. If it didn't look like it had been chewed by a dog, you'd see the colour code a lot easier, like this...

So for this one, because you want code 'B', bottom left is orange and bottom right is green. Blue and brown never change for either colour code.

 

[Amjad]

Can any body tell me what is incorrect with this wiring diagram? Thanks

 

[SparkyChick]

As far as I can see... nothing.

I believe it is using the T568A scheme with the left half showing a straight through connection (as used to connect say a networked device to a network switch) whilst the right half shows the connections required to connect two devices (typically two computers) directly together without requiring an intermediary device such as a switch.