AnsweredAssumed Answered

Partial Cal issue

Question asked by analyzer100 on Jan 21, 2013
Latest reply on Jan 21, 2013 by Dr_joel
I've been having an issue with the Partial Calibration on the 4-port ENA series analyzer.

If I complete the following scenarios:

Scenario 1
----------------

- Perform a 4-port cal but make a mistake on the reflection part of the cal, the Thru is connected correctly though.

- Perform a partial cal, re-doing the reflection (Open/Short/Load) correctly


Scenario 2
---------------

- Perform a 4-port cal but make a mistake on the thru part of the cal, the Reflection is connected correctly though.

- Perform a partial cal, re-doing the Thru cals correctly


In scenario 1, the final calibration is always bad, but in scenario 2 it is good Why is this?

It seems like a good Reflection calibration always has to have been performed, before a Thru cal can be correct.  

Outcomes