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Arm streamline NI DAQ 6211

Hi, I am trying to measure power using 'NI DAQ USB-6211' in arm streamline.

According to the page above, when energy probe is used, the maximum shunt voltage is 165mV and the appropriate resistor must be selected according to the formula written on the page.

Then what is the maximum shunt voltage when using USB-6211 above, and what formula should I use to select the appropriate resistor?

(USB-6211 Specifications - National Instruments (ni.com) USB-6211 spec)

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Ben Gainey over 3 years ago +2 verified

Hi You should refer to the documentation from NI to be sure, but I believe caiman assumes the voltage drop is given as +/-200mV and Vsupply is 5V. ( https://github.com/ARM-software/caiman/blob/84194e50ba051e711c38f58a20c57bce3645fc8e...
Peter Harris over 3 years ago in reply to Ben Gainey +2 verified

One follow up. It is also worth noting that the acceptable voltage drop depends on your target circuit. If you drop too much over the shunt resistor, you may under-volt the rest of the circuit and it...

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0 Jeongho Kim over 3 years ago in reply to Peter Harris

Thanks everyone!

It really helped a lot.
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0 Jeongho Kim over 3 years ago in reply to Peter Harris

Thanks everyone!

It really helped a lot.
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