Osprey wrote:

I know that there are Tone Tracer test units that allow an RJ45 plug
'tone injector' to be plugged into faceplates, and then at comms
room you have what is best described as pen detector .... You can pass
it over a bundle of CAT5 cables to identify the correct cable -
without terminating or stripping back to the cores.
i.e. continuity testing without metallic access.
such as:
http://www.openxtra.co.uk/products/t...100/index.html

Slightly cheaper:

http://cpc.farnell.com/jsp/endecaSea...sp?SKU=IN04456

Don't really want to buy one as they expensive ... but it would be
useful as I have a large number of cables to identify, save hours of
fun with a Ohmmeter & Stanley knife.

Anybody come up with a diy solution for one of these.

Not really... at least not a non contact version.

The one I use is:

http://cpc.farnell.com/jsp/endecaSea...sp?SKU=IN02109

Works well enough, and as you say it can save hours. Especially wwhen
you are working on kit that was installed badly in the first place with
nothing labled!


--
Cheers,

John.

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