Agilent Technologies ESA-E Series User And Programming Manual page 51

2. The polar vector diagram is shown in
rectangular shape has shifted by 90°, with the longer side of the
rectangle along the Q axis. As stated earlier, this is normal, and will
arbitrarily shift back and forth.
Figure 4-16 Polar Vector Showing an I/Q Gain Imbalance
Chapter 4
Making Modulation Analysis Measurements
Interpreting Measurement Results
Figure 4-16. Observe that the
37