A testing device that will give results regarding interference will be quite expensive. The Fluke DTX-1800 is a good example of an overpriced "Certifier" that will test for crosstalk and some interference. NONE of the "Certifiers" will properly test a twisted pair cable for power influence, RF interference or EMF interference. Some will do one or another, but none will do all. To do that you need to sweep test the cable. A sweep test will reveal all abnormalities in the cable.
We happen to own a sweep generator and scope. I have had to drag the equipment out one time in 40 years to prove a cable. A Fluke instrument certified the cable and the cable would, intermittently drop data. I found a high power influence induced on the cable by running a sweep test.
If you have a Sidekick, hook up a CO line on one end for each pair and shoot it with the Sidekick. You'll see, very quickly, if you have power influence, noise, crosstalk or faults.
Rcaman
