Hi I am working with zed F9 module. However sometimes(frecuently) output has several mistakes and text console show:
??:??:?? $GNTXT,01,01,02,u-blox AG - www.u-blox.com*4E
??:??:?? $GNTXT,01,01,02,HW UBX 9 00190000*12
??:??:?? $GNTXT,01,01,02,EXT CORE 1.00 (94e56e)*31
??:??:?? $GNTXT,01,01,02,ROM BASE 0x118B2060*20
??:??:?? $GNTXT,01,01,02,FWVER=HPG 1.11*5E
??:??:?? $GNTXT,01,01,02,PROTVER=27.10*1C
??:??:?? $GNTXT,01,01,02,MOD=ZED-F9P*71
??:??:?? $GNTXT,01,01,02,GPS;GLO;GAL;BDS*77
??:??:?? $GNTXT,01,01,02,QZSS*58
??:??:?? $GNTXT,01,01,02,ANTSUPERV=*22
??:??:?? $GNTXT,01,01,02,ANTSTATUS=DONTKNOW*2D
??:??:?? $GNTXT,01,01,02,PF=FFF79*30
??:??:?? $GNTXT,01,01,01,exception 0x00130905 has occurred*20
??:??:?? $GNTXT,01,01,02,Starting GNSS*5A
??:??:?? $GNRMC,V,N,V*37
??:??:?? $GPGSV,1,1,00,*55
??:??:?? $GPGSV,1,1,00,*55
??:??:?? $GLGSV,1,1,00,*49
??:??:?? $GLGSV,1,1,00,*49
??:??:?? $GAGSV,1,1,00,*44
??:??:?? $GAGSV,1,1,00,*44
??:??:?? $GBGSV,1,1,00,*47
??:??:?? $GBGSV,1,1,00,*47
??:??:?? $GNTXT,01,01,01,Input signal too strong. Disabling filter tuning.*21
Any idea of problem?. I did fw update, And problem sometimes solve alone and sometimes faled alone.