With regards to result on AD5933 on Evaluation board

Hi , 

We are using AD5933 Evaluation board to measure impedance .

When using Output excitation @ 0.4 Vpp and 2 Vpp we are finding the result matching to impedance measured using different source .

But when we use Output excitation @ 0.2Vpp and 2 Vpp we find the result to be totally different.

Detail about setting:

-We are using external clock @ 250kHz as output frequency is 100 Hz 

-when changing output every time we are using calibration( Resistor only R1 )

Please let me know if there are there any setting need to be taken in consideration . 

Thanking you 

With best regards and wishes