stlink-V3pwr and X-NUCLEO-LPMO01A inconsistent & inaccurate current readings

[mars-ic]

stlink-V3pwr current ：  21mA 

X-NUCLEO-LPMO01A current ：17mA 

actual  current ： 15mA 

[TDK]

Consider providing more information on why you think the spikes indicate a bug.

[Andrew Neil]

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@mars-ic wrote:

stlink-V3pwr current ：  21mA 

X-NUCLEO-LPMO01A current ：17mA 

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Are you sure that these are measuring the exact same pulses?

 

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@mars-ic wrote:

actual  current ： 15mA 

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How do you measure that?

[mars-ic]

1、Same hardware and software。
2、will Compare the measurement data of DMM6510(Keithley DMM6500 6.5 Digit Multimeter with Graphical Touchscreen)

[Andrew Neil]

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@mars-ic wrote:

1、Same hardware and software。

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But were they at the same time ?

 

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@mars-ic wrote:

2、will Compare the measurement data of DMM6510 (Keithley DMM6500 6.5 Digit Multimeter with Graphical Touchscreen)

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Do you mean DAQ6510 - this: https://www.tek.com/en/products/keithley/digital-multimeter/keithley-daq6510 ?

Are you sure that has the necessary time resolution for such short pulses?