How to measure RF power of nRF52840 DK

[Sangbin]

Hi. 

I am using nRF52840 dk in windows 10 environment.

I want to measure the RF output power of a single nRF52840 using nRF52840 dk.

I succeeded in generating a burst signal (LE 1Mbps) at a fixed frequency by adjusting the number of channels to one

in "Direct Test Mode" using NRF CONNECT V3.3.1, and I was able to confirm the signal with a spectrum analyzer.

But problem is un-synchronous signal Spetrum analyzer and LE 1Mbps.

The signal I want to measure is

1.Tx output power (dBm).

2.2nd Harmonis.

Q1.The Tx ouput of nRF52840 is max 6dbm, and I want to see it as a fixed frequency continous signal rather than TDD signal.

This is to know the exact signal power(dBm) at a specific frequency with a spectrum analyzer.

Q2. If nRF52840 DK cannot output a signal corresponding to Q1, I would like to know how to measure a TDD signal such as LE 1Mbps by synchronizing with the trigger of SA.

It was difficult to use for the first time, but now I know that there is such a good page.

Please let me know if there is a good way!

Best regards.

[Sangbin]

Thanks to your support, i can measure the continous wave signal perfectely.

Is it set up at 6dBm output right? (i attached photo which i measure)

so i appreciate that your kindly reply.

and i have some question about hex file which you attached.

I want to set up the signal output at -10 / 0 dBm. 

But it is so difficult to me that fixing code because of hex file.

Can you support that this problem?

I would really appreciate that if you supported it as a hex file that can output -10dBm / 0dBm at the same frequency (2440MHz)

Best regard!