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R+C Impedance measurement with CM350 eval board.

Question asked by sofy Employee on Jan 9, 2015
Latest reply on Jan 14, 2015 by sofy

Hi,

I had be trying to measure impedance following this EZ FAQ and UG guide. But there are some not good result.

Environment is as below.

  • Eval-ADuCM350EBZ
  • ADuCM350 Switch Mux Config (removed LK10 and LK12 jumper for impedance measurement)
  • EKSP (Version 2.0.0.15)

Referenced information as ADuCM350 FAQ Evaluation Kit Software Platform

I'd success to start EKSP after writing a firmware. and EKSP seems good working (but there are some broken button or slider: Pls see the below image)


I've been trying to measure R3 (CAP) + R4 (Register) network that soldered on Switch Mux Config board.

The result plot is almost good fit to ideal curve but there are some peak and out of line at lower frequency.

I appreciate if you give me some advice to get more good result.


EKSP configuration is as below.

01.png

Impedance measurement result as below.

02.png

Thank you for your help in advance.

Best regards,

Sofy

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