FreeLists / si-list / [SI-LIST] Instruments / Methods for measuring a cable's characteristic impedance

["Peter Baxter" <peter.baxter@xxxxxxxxxxxxx>]

Hi,

I've been using the LC method to determine the characteristic impedance of a 1 
metre long transmission line (flat) cable (around 60 ohms at 100kHz). This 
method works fine for me. However getting access to the "beautiful / expensive" 
HP LCR meter (on another companies premises) is getting harder and harder. I'm 
now considering what alternatives I might consider.

For the work I do, purchasing gear costing US$10,000 up, isn't practical. Might 
readers be able to suggest alternate methods, or products that I might 
consider? (Recommendations too, for second hand test equipment outlets - in USA 
or the rest of the world - others may also be interested).  Could a network 
cable tester be adapted to the application? Or is my cable length too short? 

Thanks

Peter Baxter  



 
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