In the non-signaling mode, continuous TX or RX and burst mode TX can be used.
When doing an RSSI scan test, verify first the RSSI reference noise floor level as a function of frequency with an antenna feed pad that is terminated to 50 Ω. Then, connect the antenna and repeat the test. The expected measured RSSI variation is less than 2 dB. The test result may be heavily impacted by cables that are connected to the Device Under Test (DUT), for example, for AT command control. This can be avoided by controlling the DUT wirelessly through Bluetooth. The test may also reveal noise that originates from some other source than the DUT, for example, an LTE base station nearby.
For more information, see Non-signaling mode.