Help with impedance measurement & model

Discussion in 'General Electronics Chat' started by Management, Feb 28, 2011.

  1. Management

    Thread Starter Active Member

    Sep 18, 2007
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    0
    I have an Agilent Impedance Analyzer. I'm current measuring two cables cables and trying to come up with a model that has vales per unit length. The cable lengths are 3 meters each. Then I can just multiple the values to get whatever distance I want.

    The model:
    [​IMG]

    So my plan to get R & L was to the ends of the cables to each other and measure Rs & Ls at the open side. Is this correct? Then R & L would be equal to half of Rs & Ls.

    My real trouble is getting C between the cables. Anyone can help me? I thought to get C was to have both ends open and measure Cp from one side. But I was getting negative capacitance. Should I have both sides open and measure Cs?

    Thanks in advance.
     
    Last edited: Mar 3, 2011
  2. Management

    Thread Starter Active Member

    Sep 18, 2007
    306
    0
    Anyone can chime in on this?
     
  3. Management

    Thread Starter Active Member

    Sep 18, 2007
    306
    0
    Any help would be great appreciated.
     
  4. The Electrician

    AAC Fanatic!

    Oct 9, 2007
    2,281
    326
    Which model Agilent impedance analyzer are you using?

    At what frequency are you making the measurement?
     
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