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Q: I would like to use the ADuCM350 to do potentiostat type measurements ?
A: Please refer to AN-1281 and the Amperometric example code in the Software Development Kit. Details in Featured Content on ADuCM350 Engineerzone homepage.
Q: Can I put a +200mV step on sensor ? See AN-1281+ details n Featured Content on ADuCM350 Engineerzone homepage.
A: Yes. At time=0, the system is calibrated so that no voltage across sensor (both sides precisely calibrated to 1.1V).
At time=1, the DAC can output 1.3V to give a DC step across sensor of 200mV.
Q: I have changed RCAL/RTIA on my board, how do I reflect this change in the Amperometric Measurement example from the SDK?
A: Please refer to the following: http://ez.analog.com/docs/DOC-11063
Are there any plans to release a later version of the software with the DC measurement restored or will it only be possible using the IAR environment in future?
Also what's the smallest measurable current change possible?
Due to some issues with the DC measurement capability on the EKSP v1.1 we removed it for the EKSP v2.0.
Once you download the 32kByte Kickstart version of IAR, the Amperomtric/DC Measurement example using the Software Development Kit is relatively straight forward and documented here:
Potentiostat / Amperometric Measurement Using ADuCM350
In AN-1281_Amperometric_Measurements_Rev0.pdf is described how to make DC measurement EKSP v.1.1)
However, in available software EKSP v 220.127.116.11. DC measurement are not available.
Where can I find EKSP software where DC measurement are available?