Products > Test Equipment
Agilent E8357A
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caesarv:
Attached is the 2-Jumper version the mxcal files from my E8358A.  The previous one I uploaded was for the 3-Jumper version.  Again, these are only approximate for any unit but the one it was created for.

Sorry, I do not know anything about the N4416A or the software that was used for it.
joeqsmith:
Shown with 2 jumper on 12 and 3 jumper on 21.   There 's about a 1dB shift between them but still the big offset.   


--- Quote ---My question for Forzaman and Caesarv,  if they rename these cal files, exit and reload the PNA program, display S11 with nothing connected, does theirs display 0, or 6ish dB?   This will at least make sure my PNA is not doing something abnormal.   
--- End quote ---

Another thing I would like to see is after alignment (assuming both of yours are),  could you also plot S11 and S22 with an open. 

I installed the 2-jumper files and swept S11/22 with the an open.   While its much worse than my attempt to align it, it addresses much of the offset.  Seems to suggest there is something else going on with the alignment and what is actually being recorded.   
joeqsmith:
Just for completeness, shown with Caesar's 2-jumper files using an old HP cable for a thru and measuring S21/12 (no cal).   
Forzaman:
Joe, I attached my screen captures with and without the mxcal files loaded. Note that the scale was changed to 2dB/div on the plots without the mxcal files loaded due to the larger offset. For the through measurements I used a 3-foot flexible SMA test cable with adapters on the ports. The insertion loss characteristics of the cable is also attached.
joeqsmith:
Thank you very much for running that.  This answers the first big question.  Seeing that mine exhibits roughly the same offset, the next question is do they reduce the power level when running the alignment.   If you plan on using one of the called out power meter/sensors with the internal alignment routine,  I would be very interested in knowing if the power level is reduced to -6ish dBm or if they run it at 0.  I assume you can just read it right from the power meter.   I'm not too worried about the entire data set, just the first data point would be good enough to answer that.   

That HP cable I show was only used to a couple of GHz.  Good enough to see if the files Caesar provided would produce an offset or not.

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