AnsweredAssumed Answered

AD5933EBZ with a PZT sensor

Question asked by nazz3 on Oct 13, 2015
Latest reply on Jun 30, 2016 by swagat

Dear Sirs,

I am using the evaluation board EVAL AD5933EBZ to take impedance readings from a PZT sensor.  I left the links as default.  Unfortunately, I have no peaks in the results obtained.  The graph is nearly linear.  The board was set as follows:

 

Start frequency - 70000 Hz

Delta Frequency - 60

Number of increments - 500

Number of settling times - 15

External clock

Output excitation - Range 1

PGA control - Gain X1

Calibration impedance - Resistor only R1

 

What do you think I am doing wrong?

 

I thank you in advance.

 

Best regards,

 

Niki

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