Solved

CABLES - Straight Thru

Posted on 2006-06-19
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Last Modified: 2010-04-17
Hi All

I have been making cables up on and off with success in the past. I have recently be trying and it aint just me, with problems.

I have 3 crimpers. The lastet being Quest TEL-6000.
I have 2 brands of cable and one brand of connectors.

Its seems a little random. One 11mtr was successful and a 15mtr from the same cable role failed.
The cable tester is a PEAK RJ45 AtlasIT cable analyser and that states the cable is straight thru. We also have a basic network cable tester which says they are straight thru.

I think one item that will be suggested is trying new connectors, but I will add then when a cable is failing we will recrimp it. 3 time on the one we're freaking at right now :)

Hope you can help.

Cheers
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Question by:pbrane
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LVL 79

Expert Comment

by:lrmoore
ID: 16933856
Cables and ends each have two types
Stranded core copper wire and solid core copper wire
Ends come designed for either stranded or solid core
You will get mixed results if using and end designed for stranded core on wire that has a solid core
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Author Comment

by:pbrane
ID: 16933901
Hi , Thanks for your response.

I have solid core copper. I'll check with the manufacturer about the ends.
Thanks for the lead.

I'll let you know asap.
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Author Comment

by:pbrane
ID: 16933974
The manufacturer, stated that they should be fine with either, but definitely solid core?

What do you think?
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Accepted Solution

by:
lrmoore earned 500 total points
ID: 16934127
Some do claim to support both stranded and solid..
"A superior two-prong contact design works for both Solid and Stranded conductors. "
http://www.l-com.com/productfamily.aspx?id=2681

Are you following TIA/EIA 568 A/B standards for color coding? Which standard - A or B?
Are you using CAT5e cable and same rated ends?

Suggest using a CAT5 cable tester instead of a basic connectivity tester.
http://www.broadbandutopia.com/teslancatcat.html
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Author Comment

by:pbrane
ID: 16934256
I must admit I aint following any colour coding standard, only my own.
Should that matter though, as long as the colours are in same order at each end?
I am using cat5e cable and Ends.

The tester I am using is http://www.anatekcorp.com/testequipment/atlasit.htm. Should do the trick?

I think I must try different branded ends from here...?


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LVL 79

Expert Comment

by:lrmoore
ID: 16934420
>Should that matter though, as long as the colours are in same order at each end?
ABSOLUTELY! Each pair is a different length and there is a set standard for the order of wires to meet CAT5 standards.
A non-standard cable will NOT work in 100Mb or Gigabit environment

http://www.lanshack.com/make-cat5e.aspx
Pick a standard, either A or B and stick with it.
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Author Comment

by:pbrane
ID: 16934574
Extremely sheepish look on my face!!!!!

Doing it now...

Is there an explanation of what length means here. I know it may seem a stupid comment but in distance terms they are the same length.

Cheers
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LVL 79

Expert Comment

by:lrmoore
ID: 16934624
Actually, each pair has a slightly different twist density that results in each pair being slightly different in total length.
If you pull each pair out of the jacket and untwist each pair and lay them side-by-side they will be different lengths.
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Author Comment

by:pbrane
ID: 16934798
Hi
We tried that and still exactly the same response.
I did a TIA/EIA 568 B standard!

I'm not sure if there is anything else you can add. If not a will simply provide the points for all your effort. It must something to do with the cable etc I am using.

Thanks for all you input. I very grateful.
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LVL 79

Expert Comment

by:lrmoore
ID: 16935003
Sometimes I've had a bad batch of ends that took me 3-4 tries every time to get a good cable..
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Author Comment

by:pbrane
ID: 16935093
Thanks I'll try again. I'll also buy some new ends.

Thank You v much.
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