nRF52833 BLE direction finding IQ samples are out of range?

[adel]

HW: nrf52833-DK

SW: SDK v16.0.0 and SoftDevice s140

We are using nRF52833 BLE direction feature and read IQ samples produced by BLE Radio.

The format of the IQ samples is described as follows:

According to the documentation both I and Q must be in the range -2048 .. +2047.

However in practice we observe that occasionally (<3%) of IQ snapshots have the exact value -32768-32768i, which is out of the specification.

The errata does not seem to mention it as a known issue. So the chances are high that we use BLE Radio incorrectly.

Are there any hints as to what might go wrong with the BLE Radio setup that could lead to this kind of malfunction?

[Kenneth]

Hi, I can check if someone may have an idea. 

Edit: Looks like there is missing a "out of range samples are saturated at value -32768" from the table you refer to. This is included for the same chapter for nRF5340:
https://infocenter.nordicsemi.com/topic/ps_nrf5340/radio.html#concept_dfe_iq_sampling

In other words these values should be discarded.

[adel]

Thanks for the swift reply.