TX power setting in Direct Test Mode

RE: TX power setting in Direct Test Mode

Håkon Alseth — Wed, 26 Feb 2025 09:35:51 GMT

Is the issue that you want to change the default output power?

If yes, please see this thread: RE: Change DTM TX Power in Zephyr

If you still see issues, I would suggest opening a dedicated thread.

Kind regards,

Håkon

RE: TX power setting in Direct Test Mode

sguitton01 — Tue, 25 Feb 2025 16:16:40 GMT

Hi Hakon, Paul,

It seems I have the same issue here. Were you able to find the reason and to resolve this issue?

Thank you,

Sylvain

RE: TX power setting in Direct Test Mode

Håkon Alseth — Fri, 24 Nov 2023 14:47:54 GMT

Hi Paul,

Good to hear that the hardware connections works as intended. The issue is then that the output power is not varied while using the PC application, but this works as intended with the nRF52840-DK.

Could you share information related to which SDK (NCS or nRF5) and which version of said SDK you're using?

Kind regards,

Håkon

RE: TX power setting in Direct Test Mode

paul0208 — Fri, 24 Nov 2023 14:23:28 GMT

Hi,

Q1: Have you verified that DTM runs as expected on your custom board?

-> I test single and sweep function and looks working well.

Q2: Do you get any errors in the PC application?

-> There is no error message on log window.

Q3: Do you mean that there's no output when setting a carrier for instance?

-> Output power is measured some value. but, not change even though I change tx power in DTM app.

Q4: DTM has a strict dependency on the external 32M xtal. Is this running as expected on your board?

-> My application is working well. advertisement packet can be received by DK board.

BR
Paul

RE: TX power setting in Direct Test Mode

Håkon Alseth — Fri, 24 Nov 2023 13:10:46 GMT

Hi,

Q1: Have you verified that DTM runs as expected on your custom board?

Q2: Do you get any errors in the PC application?

[quote user=""]RF test equipment measured average power and peak power are not changed at all. Fixed.[/quote]

Q3: Do you mean that there's no output when setting a carrier for instance?

Q4: DTM has a strict dependency on the external 32M xtal. Is this running as expected on your board?

Kind regards,

Håkon