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N4691B measurement issues with Port A

Question asked by tandmguy on Dec 10, 2015
Latest reply on Dec 21, 2015 by Dr_joel
We are facing measurement issues with Ecal module N4691B.
After performing 2 port CAL on E5071C the network analyzer is showing S11 as 0.3 to 0.5 dB on Port A 
2.5GHz     0.0915dB
2.8Ghz     0.0701dB
3.1Ghz     0.01446dB
3.3GHz     0.2353dB 
3.5GHz     0.3102dB
3.8GHz     0.4163dB
4.1GHz     0.4363dB
2.5GHz     0.0928
2.8Ghz     0.1194
3.1Ghz     0.1088
3.3GHz     0.094
3.5GHz     0.0892
3.8GHz     0.1032
4.1GHz     0.122

Kindly advice whether these results are acceptable.
When we calibrated with another Ecal the E5071C is giving good results.