Direct Test Mode on nRF52832

[giau nguyen]

Hi,

I want to verify Bluetooth on my board is good or bad.

Note that, I do not have any spectrum analyzer or vector network analyzer, just development kit.

I found example Direct Test Mode, radio_test but I do not have document about this example.

Then, I also try to using nRFgo Studo to test. I use 2 board, they use dtm firmware, one for transmit, other for received, but I do not see anything.

Can you help me?

Thank you so much!

[Andreas]

Hi,

 

As kindly mentioned, the easiest is to load an example from one of our SDKs and use a smart phone to estimate the range, or compare versus e.g. your development kit. Using our nRF Connect app will also let you plot the RSSI readings from multiple devices.

 

DTM is used by Bluetooth testers during RF-PHY testing. This is mainly decided by the radio itself, the PCB layout mainly decides the maximum range you will be able to get, so if you've replicated our recommended reference design fairly closely this should not be a concern. We also have some script for using a DK as tester, for PER tests, see this document.

 

Best regards,

Andreas

[giau nguyen]

Since Nordic update their website, I can not find that script in Python.

Thanks Andreas!

[Andreas]

Hi,

 

Go to https://www.nordicsemi.com/DocLib . Then press 'Application notes', and you will find the python scripts in the zip download of nAN34:

 

Alternatively, it is still available in the infocenter (the zip download).

 

Best regards,

Andreas

[giau nguyen]

Thanks Andreas