Bob wrote in
:

On Tue, 06 Apr 2010 00:16:56 GMT, Owen Duffy wrote:
....
I have had sucess with placing a balun of a string of ferrite cores
over the line.

That means literally threading some suitable ferrite toroidal cores over
the transmission line you are measuring.

If you add a separate balun between the analyser and the cable under test,
you introduce an unknown component that will probably disturb your
readings.

Owen