On 19/05/2018 13:58, ARW wrote:
Just after a cheap one for when I have not got the works proper one.


https://www.toolstation.com/shop/p10555

https://www.screwfix.com/p/philex-ne...e-tester/93219

For checking you have the right pin wired to the right pin they will
usually do the job nicely.

They probably wont spot things like split pairs - where the right
connections are made, but with wires not in the right pairs, and they
can't give any indication of the "quality" of the connection (near and
far end crosstalk, bandwidth etc).

For new install stuff, the basic testers are fine (assuming you are not
going to be running 10G ethernet over the wires)

The next level up testers, e.g:

http://cpc.farnell.com/fluke-network...t=lan%20tester

Add some handy bits like split pair detection, a tone injector, and
possibly a capacitive cable length indication. Of those, tone injection
is the most handy for finding which wire out of the many identical
looking ones you are after.

I have one made by Ideal, with an add on pack of 8 remote modules.
That's quite nice for new installs since you can do multiple connections
at one end, and connect up the remote modules, then go do a bunch at the
other end, and it will identify which module its connected to as well as
testing the pinout. Alas they don't seem to do that one any more... ISTR
it was a couple of hundred with the extra modules. This is probably
comparable though, and included the modules:

http://cpc.farnell.com/peak/utp05e/a...ser/dp/IN07477


On vary rare occasions I wish I had access to a "full on" lan analyser -
or something that at least contained a TDR, and could do frequency and
noise performance tests. I have had a couple of times where connections
have probably been nibbled by rodents, and the basic lan testers can't
see any problem. However the connections no longer function reliably
when in use. I expect a proper tester would show a fault here.


--
Cheers,

John.

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