https://devzone.nordicsemi.com/f/nordic-q-a/120130/rf-testHi, We are doing RF Test for nRF52840DK, and we are using CBT Bluetooth tester. Commands are going to CBT fro nRF board. My Question is code we need to flash for RF test. any specific BT tester, please suggest. with regards, Bhagyashree.en-USTelligent Community 13Tue, 25 Mar 2025 12:19:28 GMThttps://devzone.nordicsemi.com/thread/528835?ContentTypeID=1Tue, 25 Mar 2025 12:19:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:596ae30a-3ff1-4ad4-a9f6-a395e131b3b0Asbj&#248;rn<div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;">Hello,</div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;"></div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;">the CBT communicates with the nRF52840 with the BLE defined direct test mode (DTM). It&#39;s a specific FW for running BLE testing:<span>&nbsp;</span><a style="border:0;margin:0;padding:0;vertical-align:baseline;" href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/bluetooth/direct_test_mode/README.html">https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/bluetooth/direct_test_mode/README.html</a></div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;"></div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;">The code can be found in our nRF Connect SDK:<span>&nbsp;</span><a style="border:0;margin:0;padding:0;vertical-align:baseline;" href="https://docs.nordicsemi.com/bundle/ncs-2.0.0/page/nrf/getting_started.html">https://docs.nordicsemi.com/bundle/ncs-2.0.0/page/nrf/getting_started.html</a></div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;"></div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;"></div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;">Best regards</div> <div style="border:0;color:rgba(0, 0, 0, 1);font-size:11pt;font-style:normal;font-weight:400;letter-spacing:normal;line-height:inherit;margin:0;padding:0;text-indent:0;text-transform:none;vertical-align:baseline;white-space:normal;">Asbjørn</div><div style="clear:both;"></div>