LLigetfa
join:2006-05-15
Fort Frances, ON
| reply to Airplane777
Re: Good RJ45 crimping tool
You need to examine the end result under a decent magnifier. The contacts that get pushed down between the plastic lands should be just slightly below the top of the lands. Drag out a bunch of factory crimped jumpers preferably from different manufacturers and get a feel for what normal looks like.
The cheap crimpers don't seem to have any adjuster and some of the expensive ones do have an adjuster for the when the ratchet releases but the bottoming out setting of the crimper is machined into the die. On those, it is important not to keep squeezing after the ratchet releases.
Some people want to give it that EXTRA squeeze for good measure. BAAD idea. I had a 3rd party installer make all his own jumpers for a network I had a support contract on. I had to get tough with the client and refuse further support until all the jumpers were replaced. It was an ugly sight... toothpicks stuck in the jacks to hold the plugs against the contacts... PCs fading in and out like skip radio.
Oh, and not all RJ45 plugs are created equal. there are three basic types.
One for stranded with a pointed (usually 2 of them, inline) insulation displacement cutters (IDC) that peirce straight down the centre of the wire.
The type for solid where the IDC is forked (3 cutters, offset) to straddle the wire.
A third that is universal, also forked.
If you use the stranded type on solid, it will not give you a lasting connection. |
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Airplane777
join:2004-06-20
| reply to LLigetfa
said by LLigetfa  : Even if it is a quality tool, always examine the connector to be sure it is properly calibrated. What about the RJ 45 connector tells you the calibration? I'm not sure what calibration means, with respect to the RJ 45 connector.
Thanks |
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LLigetfa
join:2006-05-15
Fort Frances, ON
| reply to lutful
I'm pretty sure mine is an AMP ratchet type crimper. Whatever you get, make sure it is a quality tool that does not permit over-crimping. Even if it is a quality tool, always examine the connector to be sure it is properly calibrated.
There is nothing worse than over-crimped connectors fading in and out. I must have thrown away hundreds of factory crimped jumpers that were over-crimped. I ran into the over-crimp issue when we rolled out new PCs that had a different brand of NIC. The gauge of the spring contacts were larger and they were hanging up on the insulator between the RJ45 plug contacts. |
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