failures in getting SCAN_RSP packet for a SCAN_REQ packet

Hi,

I am sending a SCAN_REQ packet from my code after receiving an Advertising packet from the NRF5340 DUT. Sometimes I receive the SCAN_RSP packet, but other times I encounter failures. I have captured the Over-the-Air waveform log with the NRF52840 sniffer. In the snippet below, the sniffer indicates that the CRC matches for the SCAN_REQ packet, but I am not receiving a response from the DUT. I am conducting this test inside an RF chamber. Out of 50 attempts, I do not receive a response around 15 times. Could you please suggest possible reasons for these failures and areas where I can improve?

Regards,

Kaviya

   

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