https://devzone.nordicsemi.com/f/nordic-q-a/53566/nrf52840-dk---pca10056Hi engineers, I got a question regarding nRF52840 (PCA10056), i want to run DTM using PCA10056 board with MT8852B tester. Unfortunately, i keep failing to get the EUT address. Below is the signal diagram of Rx &amp; Tx pin. (Yellow = Rx; Pink = Tx). Theen-USTelligent Community 13Thu, 24 Oct 2019 00:11:08 GMThttps://devzone.nordicsemi.com/thread/216466?ContentTypeID=1Thu, 24 Oct 2019 00:11:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3bb1ac0a-ed69-4d22-8e2b-0f7ed0cfb7a5New Guy<p>Hi,</p> <p>Managed to run it now...cheers !!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/216366?ContentTypeID=1Wed, 23 Oct 2019 12:24:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c1d92406-788e-4688-b466-7d7795652f3cAndreas<p>Hi,</p> <p>&nbsp;</p> <p>The signals look somewhat correct, but it is hard to say without seeing more detailed. Have you compared the commands you send with the DTM spec (page 2936 of the <a href="https://www.bluetooth.org/docman/handlers/downloaddoc.ashx?doc_id=457080">BT core spec</a>)?</p> <p>&nbsp;</p> <p>Also how does your setup look like? How do you interface the nRF52 to the MT8852b?</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>