BLE TX Mask Failed

RE: BLE TX Mask Failed

JONATHAN LL — Thu, 20 Feb 2025 20:58:43 GMT

The results look ok and is what we would consider expected. The -60dBm result that you have there is perfectly normal.

If there is some specific certification you are going for then that would be nice to know and maybe we can look more in to this then, but as the results stand now I don't see any issues here as the device would pass FCC or similar tests.

We can have a look at the custom board files and schematic and provide some feedback for best practise for our devices if you want that.

Regards,
Jonathan

RE: BLE TX Mask Failed

TuanB — Thu, 20 Feb 2025 16:14:57 GMT

not on Nordic DK. On our custom board.

RE: BLE TX Mask Failed

JONATHAN LL — Thu, 20 Feb 2025 15:02:14 GMT

Are you testing on a Nordic DK ? or some custom hardware?

Regards,
Jonathan

RE: BLE TX Mask Failed

TuanB — Thu, 20 Feb 2025 14:39:42 GMT

Hi,

I'm using DTM software from Nordic to run TX continuously. Command lines from DTM is also attached in the images.

Yes, if you compare to IEEE standard, it passed. I think compare to other Nordic chips, the far out noise floor should be much better than -80dBm, right?

RE: BLE TX Mask Failed

JONATHAN LL — Wed, 19 Feb 2025 14:48:54 GMT

Hi,

What test is this ?

And how is the test setup?

It does not seem to fail the Bluetooth spec.

Regards,
Jonathan