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TRL Global Delta Match cal

Question asked by on Oct 18, 2011
Latest reply on Oct 18, 2011 by daveb
Using the N5230C 4 port with one reference receiver that requires a global delta match(GDM) cal to do TRL.

1)  If I do a GDM cal with one set of cables and connect up different set of cables/adapters, can I still apply my GDM cal to do a TRL cal?

2)  If so, why doesn't Agilent just do a GDM on these analyzers before they ship to customers?

3)  When do these GDM cal's have to be redone?

4)  Could you please update the PNA help file to cover these details besides responding here?