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Toner and Probe POE interferenceHelpful Member! 

troma76 (IS/IT--Management) (OP)
16 Dec 11 8:59
m in need of a Toner and Probe kit that can overcome the interference created by PoE or a cable plugged into an active switch.

I bought a Fluke Networks Pro3000 Analog Tone and Probe and all i got was the feedback . I am wondering if a Fluke Networks IntelliTone Pro 200 Toner  will work. I been looking through the comments and i have not seen this mentioned or maybe im missing the right verbiage to look for. can any one help??
trvlr1 (TechnicalUser)
16 Dec 11 13:41
Look up something like: Progressive Tone And Probe Line Tracer. When you get it, build an adapter that sends the tone (normally on the blue pair) down an unused pair, or split it between other pairs, ie one on Green/white, the other on white/orange or similar. That should take care of your issue.
I am not familiar with what you have, but you may be able to build an adapter for that too, with just a pair of data jacks and a piece of wire.
Helpful Member!  wires (TechnicalUser)
16 Dec 11 15:22
Toners work best on split pairs on unconnected cables. Since you have to disconnect one end to insert the tone you can't work on a live circuit anyway. So one method goes like this:

1. Connect toner to a split pair with an adapter or connect toner to one wire in the cable and the other toner lead to ground.

2. Look at switch for unconnected ports.

3. One at a time remove the cable patchbay connector that connects to a unconnected switch port.

4. Stick the insulated tip of your tone probe into the open connector on the patchbay. The tone should be quite audible.


There are better ways to trace wires in this situation than a toner and probe.

First, if it is a managed switch look at the MAC address table and you will be able to tell which devices are connected to which port.

Second, there are quite a few devices available that flash switch ports when connected to a remote jack. My favorite is the MicroScanner. It gives provides a complete set of tools to verify basic connectivity and find faults in almost any sort of cable. I don't know if the MicroScanner2 has this capability.

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