https://devzone.nordicsemi.com/f/nordic-q-a/86283/scan-window-switching-time-in-nrf52840According to the official BLE core specification, in the scanning state: &quot;If the scanWindow and the scanInterval parameters are set to the same value by the Host, the Link Layer should scan continuously.&quot; But the scanning in this case is not reallyen-USTelligent Community 13Mon, 28 Mar 2022 11:53:28 GMThttps://devzone.nordicsemi.com/thread/360276?ContentTypeID=1Mon, 28 Mar 2022 11:53:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6763882e-72b8-4b20-858a-1f18bb5b101fKenneth<p>Sorry, but we don&#39;t have min/max for the tScanReserved, I can see that it is 760us in the softdevice specification you refer to. It may change between softdevice releases and version, so if this value is critical for you you should check the softdevice specification for the specific softdevice you are using. For short scan windows/intervals the tScanReserved will relatively start to take a substantial time of the on-air actve scanning (e.g. 760us of 5ms), so likely you would want to have larger scan window/interval to reduce the impact yes (e.g. 760us of 100ms). Sorry, but I don&#39;t have any more accurate number for you, but the power profiler should give a decent accuracy, since it does show when the radio is in active listening mode by looking at the peak current consumption is stable like you already are doing.</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>