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Short not a short?

Question asked by agilentgeoph on May 24, 2008
Latest reply on May 25, 2008 by jvall
After I perform a 1-port or 2-port cal on an E5061 or E5070, I check the short and open connections in Smith chart format.  The S11 measurement does not read 0+0j Ohms with a short connected, and it doesn't measure infinity +infiniy j Ohms with an open.

I can use port extensions to adjust the short reading near 0+0j and this also adjust the open measurment correctly.

What's going on?

Thanks  

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