https://devzone.nordicsemi.com/f/nordic-q-a/77408/how-to-measure-cw-signal-of-2-4g-as-a-frequency-meterI try to use 52832 as a frequency meter to measure the bluetooth central frequency to do crystal trimming. The target is a CW(continous wave) signal, like 2441MHz,which can be easily measured with a spectrum analyzer or a frequency meter in the precisionen-USTelligent Community 13Tue, 13 Jul 2021 13:41:35 GMThttps://devzone.nordicsemi.com/thread/319834?ContentTypeID=1Tue, 13 Jul 2021 13:41:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:836824c2-4589-4098-93e5-cb243326a9d2ovrebekk<p>Hi</p> <p>You can set the nRF52832 in a continuous wave mode where it generates a constant carrier on one of the supported channels, but the resolution is only 1MHz, and the accuracy is set by the 32MHz crystal used.&nbsp;</p> <p>Normally these crystals are only required to have an accuracy of +/- 50ppm or better, which means that a carrier at 2.4GHz could have up to 120kHz drift in one direction or the other.&nbsp;&nbsp;</p> <p>So I don&#39;t think the nRF device is able to do what you need.&nbsp;</p> <p>Part of the reason spectrum analyzers are expensive is the level of accuracy and precision they must be built to in order to be useful for RF testing.&nbsp;</p> <p>Best regards<br />Torbjørn</p><div style="clear:both;"></div>