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E5230A 4-port cal w/cascade substrate and PNA cal wizard

Question asked by greggd on Aug 4, 2006
Latest reply on Aug 17, 2006 by LeonardHayden
We are having trouble obtaining an accurate 4-port cal using the E5230A cal wizard and the Cascade differential cal substrate.

Sdd21 is -1dB @ 20 GHz
Scc21 is +1dB @ 20 GHz ???

S11, S22, S33, S44 look fine as do S31 and S42 when measuring the
cal thru after the cal has been completed.

Any help will be greatly appreciated.

-Gregg  

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