https://devzone.nordicsemi.com/f/nordic-q-a/24036/carrier-test-in-direct-test-mode-dtmHello I want to clarify the exact meaning of the carrier test or unmodulated signal in DTM. In carrier test mode, DUT transmits 0xFFF....FFF which means all one pattern. All one payload data in the packet generates only one frequency in GFSK modulationen-USTelligent Community 13Fri, 11 Aug 2017 14:27:15 GMThttps://devzone.nordicsemi.com/thread/94630?ContentTypeID=1Fri, 11 Aug 2017 14:27:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6b3c9646-25cc-4832-a1f2-e396bf0fd260run_ar<p>Not sure I understand the question. But you can find details about the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v14.0.0/ble_sdk_app_dtm_serial.html?cp=4_0_0_4_4_3#ble_sdk_dtm_proprietary">Vendor Specific packet payload here</a>.</p><div style="clear:both;"></div>