Fixed bandwith for certification process

[FabienP]

Hello,

We have developed a firmware based on nrf52832 that use Softdevice for the BLE stack, as a peripheral. So the advertising is made on channels 37,38 and 39 and once connected all channels can be used.

The supplier in order to certificate the Radio as us to provide a 3 firmwares that will use only one fixed channel (bandwidth) at  2402MHz 2440MHz 2480MHz.

But I can't see how to do it. Can you provide us a technical solution ideally that does not change the firmware features or if not possible a configuration to emit on these 3 frequencies.

Thank you,

[ketiljo]

You can either use DTM (Direct Test Mode)  or the "radio test example" from the SDK. The first is best if you have a Bluetooth testes, the latter is best is you are doing just regulatory testing. You can take the functions from the radio test example and spin your own firmware to make it easier for the test house to use it.

Regulatory testing is usually done without the Bluetooth stack