https://devzone.nordicsemi.com/f/nordic-q-a/86521/multi-nusI was starting from multi-NUs.I need to send form a Master a message to 4 Slave every 50mS. I see that up to 100ms It work but that at 50mS the comunication doesen&#39;t work . I have to send 30 bytes is there a minimum time required to send the messageen-USTelligent Community 13Fri, 01 Apr 2022 14:50:41 GMThttps://devzone.nordicsemi.com/thread/361273?ContentTypeID=1Fri, 01 Apr 2022 14:50:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a226de0a-cc3f-4e1a-b9a5-fcb4c99198a2Sigurd[quote user="novello"]have BLE connection(err -120)[/quote] <p>What function returned that?</p> <p>Could you post the log output?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/361220?ContentTypeID=1Fri, 01 Apr 2022 12:12:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d4ebd8b4-6bfb-4519-888c-fbce7d6828bcnovello<p>at 100ms the device wotk.&nbsp;</p> <p>if but at 80mS Ihave BLE connection(err -120)&nbsp; .I&#39;m using the zephyr-version&nbsp; sdc_hci_driver:Softdevice Controller Build version 73 59 13 e4 e1 27 b5 aa 22 21 6a b2 cb 9e.</p> <p>If I d&#39;ont use the Sdc version it work for 3 second and then stop</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/361199?ContentTypeID=1Fri, 01 Apr 2022 10:55:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0db9f525-524e-41a7-b7a8-3cecd67e12b5Sigurd<p>Hi,</p> <p>Are you using nRF Connect SDK or nRF5-SDK ?</p> [quote user=""]I see that up to 100ms It work&nbsp; but that at 50mS the comunication doesen&#39;t work .[/quote] <p>Do you get any errors? Could you describe some more what isn&#39;t working?</p><div style="clear:both;"></div>