While working as tech-support for one of the local alternative ISPs dealing with standard, POTS and DSL lines, one of the things we learned to utilize for fault detection is a so-called SELT - a Single-End Line Test that supposedly emits a signal and through some method determines the distance where the wire might have a break or a short. In that way, we could determine whether the break occurred at the customer premises, somewhere along the underground/above-ground cable or at the distribution center. The readings are accurate up to a 10m resolution, which is just fine for an average 1.5 km line.
What occurred to me is - does anyone utilize a similar method when winding pickups? Commonly a SELT works over twisted pairs, though if memory serves, I have been getting fairly correct readings even if one of the lines in the TP got snapped or unwound. This way, you might be able to utilize the same method to find if a coil has snapped and where it snapped.
Last time I checked at my university (as my secondary BSc studies had me involved in telecom work, my primary being DSPs), what they showed us as a definitive instrument was a Fluke meter used specifically for testing CAT 3, 5, 6 cables, so I'm not sure if any other meters have that option, but I recall that specific Fluke meter also had a secondary slave unit, effectively performing a DELT (Dual-End Line Test).
Any ideas if this works? I'm reading through this entire MEF f-11 forum from the back towards the front and I only got to page 42. I haven't seen the method mentioned anywhere, so I figure it might work - but it might not, as well.
What occurred to me is - does anyone utilize a similar method when winding pickups? Commonly a SELT works over twisted pairs, though if memory serves, I have been getting fairly correct readings even if one of the lines in the TP got snapped or unwound. This way, you might be able to utilize the same method to find if a coil has snapped and where it snapped.
Last time I checked at my university (as my secondary BSc studies had me involved in telecom work, my primary being DSPs), what they showed us as a definitive instrument was a Fluke meter used specifically for testing CAT 3, 5, 6 cables, so I'm not sure if any other meters have that option, but I recall that specific Fluke meter also had a secondary slave unit, effectively performing a DELT (Dual-End Line Test).
Any ideas if this works? I'm reading through this entire MEF f-11 forum from the back towards the front and I only got to page 42. I haven't seen the method mentioned anywhere, so I figure it might work - but it might not, as well.
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