Following the document "C94-M8P-Appboard-Setup_Presentation_(UBX-16009772)", I configure the rover side GPS as "portable" mode. Then I sent RTCM message to it, it was still in 3D fix mode, and doesn't goes into "3D/DGNSS" mode mentioned by the document. Should I configure more for this?
And no UBX-RXM-RTCM item in message view...
More informarion, after enable UBX-MON-MSGPP, I can see the message from UART1 is paserd as USER0, but not RTCM3.