https://devzone.nordicsemi.com/f/nordic-q-a/21898/emc-test-question-max-electromagnetic-power-emitted-by-s210Hi Nordic, Device: nRF51422. Protocol: ANT+. Softdevice: S210 We want to do the EMC test of our custom board and we would like to know at least an approximation of what is the emitted electromagnetic power in a normal application. We thought ofen-USTelligent Community 13Mon, 22 May 2017 07:17:37 GMThttps://devzone.nordicsemi.com/thread/85979?ContentTypeID=1Mon, 22 May 2017 07:17:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:74c90d77-5cf7-4793-b034-25f7980bc136angel<p>Thanks a lot Jorn!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/85978?ContentTypeID=1Wed, 10 May 2017 14:03:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5e466f3e-755c-4887-807d-a9c36199650dJ&#248;rn<p>Hello angel</p> <p>The nRF51422 has, according to page 51 of the product specification, a maximum RF output power (from the chip) of 4 dBm (2.5mW) and a minimum RF output power of -30 dBm (1uW).</p> <p>If by electromagnetic power, you mean the poynting vector of the radiated electromagnetic field it would be dependent on the field radiated by your antenna in a given direction. You could make an approximation by calculating, or simulating, the radiated field from your antenna, and then use that to find the poynting vector. A more accurate approach would be to measure it in a test chamber.</p> <p>If you mean unwanted EM radiation from the chip itself, that would be dynamic and dependent on what hardware is used at any given time. I&#39;m afraid we don&#39;t have any specifics around the EMI from the chip that I am aware of.</p> <p>I recommend you look at the white paper on <a href="http://infocenter.nordicsemi.com/pdf/nwp_006.pdf">RF Performance Test Guidelines</a> and see if that can be of help. There are a couple of sections which might be relevant.</p> <p>Best regards</p> <p>Jørn Frøysa</p><div style="clear:both;"></div>