KW45 Power measurment board issue

[MSM1]

Hello,

I am trying to measure power consumption on my KW45 EVK following AN13230 recommendations.

The board was working fine and i could observe figure 13.

In chapter 5.1.1 I have removed the 4 components as mentioned in Figure 12 to have the same waveform as Figure 14 and sharpen my waveform.

Now i have error when i try to flash code and the application already existing no longer run. and also led D7 is now On when i power the board.

I hope no issue happened to the board.

Thanks for the Help.

Kind Regards,

MSM.

[MSM1]

Hello Again,

It is not mentioned in the document but after looking to the schematic , should i shortcut the components after removing them ?

(R177 , L13 , R178 , R179).

Kind Regards,

MSM.

[Ricardo_Zamora]

Hello,

Hope you are doing well. Yes, you are correct. If you removed those components, you need to shortcut the connection after removing them.

Regards,

Ricardo

[MSM1]

Hello Ricardo,

Thanks for the reply.

I have made changes , the board is now running fine. But the waveform is not as expected like figure 14. Too much noisy.

Here is what i am observing. (advertising figures before and after the hardware changes). 

Before is as expected, After hardware changes too noisy. i am also measuring from JP5-3 , the project code is the same.

Kind Regards,

MSM.