https://devzone.nordicsemi.com/f/nordic-q-a/87614/nrf52840-rf-software-calibration-methodI&#39;m using nrf52840 for my product. when testing the Bluetooth RF of this chip, I found that the carrier is offset by 200kHz. i read many similar problems, it seems that the carrier offset of nrf&#39;s Bluetooth chip can&#39;t be adjusted by software, but I donen-USTelligent Community 13Mon, 09 May 2022 07:05:56 GMThttps://devzone.nordicsemi.com/thread/366837?ContentTypeID=1Mon, 09 May 2022 07:05:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:09bd2434-9337-4eea-9ec3-9ffb80557f3bJared<p>It should be specified in the datasheet for the crystal as CL</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/366799?ContentTypeID=1Sat, 07 May 2022 09:54:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:850400c9-c9b3-4262-8e01-c300451c3102liu hao<p>Thank you. The external load capacitance of our product is 12pF, but where do I look for the internal load capacitance?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/366681?ContentTypeID=1Fri, 06 May 2022 10:42:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7b60da67-01cf-4131-9f87-72035795825eJared<p>Hi,</p> <p>The offset can be adjusted by adjusting the load capacitors of the HFXO crystal. What is the internal load capacitance of your HFXO crystal and what is the size of the external parallel load capacitors?</p> <p>regards</p> <p>Jared</p><div style="clear:both;"></div>