On Sunday 26 September 2004 08:09 am, Archer did deign to grace us with the following:
I've always found a time domain reflectometer gets me close enough.
Good Luck! Rich
Problem about characteristic impedance
Sep 27, 2004
5 Replies
how to measure the characteristic impedance of a coax? I'm starting to study the rf circuit design.
may i measure the impedence using meter? and how would it be done that measure the open far end coax?
I suppose you might do with a vector volt meter. Not sure. Been too long since I used one. I'd use a scope.
you don't measure at the far end. you just short the far end or open the far end.
local optimization seldom leads to global optimization
my e-mail address is: AT mmm DOT com
Or you also could measure the inductance of the inner conductor and capacitance between the inner conductor and the shield. Z0=sqrt(L/C)
Regards
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