Cable tracing through a building

Nov 19, 2013 20 Replies

to find the other end of it. I thought that I knew where it went as I installed all these cables, but it's just not there. I have a small tone generator and an inductive probe that work well on unshielded wire, but attempts at using this on shielded cable have always been a problem. I've been thinking of trying to set my old HP200CD audio oscillator to 1KHZ and really crank it up and feed it into the cable. The 200CD will output a respectable signal across 600 ohms, (naturally I'd be using it unterminated here), and I wonder if I'd be able to pick it up through the cable then?

practical) is to inject a high enough RF frequency into the cable at a level where it would egress. Perhaps I might be able to see this on my spectrum analyzer. Of course I realize that the superior shielding of the quad cable is working against me here too.

really in a position to make a purchase like that. Does anyone have any suggestions for finding this cable? Thanks, Lenny

You might try using 10 kHz and exciting both core and shield against ground. It might work better.

?-)

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