Round trip time measurement and coded PHYhttps://devzone.nordicsemi.com/f/nordic-q-a/33941/round-trip-time-measurement-and-coded-phyHi, I want to measure Round Trip Time (RTT) varying data rate However, when using coded phy, the RTT shows extremely long time Using 1M or 2M with connection interval 30ms, RTT usually 26ms or 56ms, which is understandable, but using coded phy, iten-USTelligent Community 13Fri, 04 May 2018 10:51:26 GMTRE: Round trip time measurement and coded PHYhttps://devzone.nordicsemi.com/thread/130996?ContentTypeID=1Fri, 04 May 2018 10:51:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9c2f6ff9-b706-434b-b559-d1d9d52648a0Susheel Nuguru<p>That is not the correct way to test as this includes all the software processing latencies to notify those events to the app. You should use RADIO notification API and check the time between the packet sent and packet received.</p><div style="clear:both;"></div>RE: Round trip time measurement and coded PHYhttps://devzone.nordicsemi.com/thread/130714?ContentTypeID=1Thu, 03 May 2018 06:14:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1626a0af-8dc6-4b20-8911-5751bf7bbc5cElissa<p>Hi, thanks for reply.</p> <p>I modified &#39;ble_app_att_mtu_throughput&#39;, so whenever test_run called, send a packet (just one packet) and measure the time from&nbsp;NRF_BLE_AMTS_EVT_TRANSFER_FINISHED event to&nbsp;NRF_BLE_AMT_C_EVT_RBC_READ_RSP event.</p><div style="clear:both;"></div>RE: Round trip time measurement and coded PHYhttps://devzone.nordicsemi.com/thread/130509?ContentTypeID=1Wed, 02 May 2018 11:19:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bfc94893-fd9d-483e-b731-f5351822d54bSusheel Nuguru<p>I am not sure how you are measuring this and getting the info in RTT.</p> <p>500ms is not correct, it cannot be that much. The max difference should be in micro seconds, not in milliseconds.</p><div style="clear:both;"></div>