Ublox RCB-F9T, Руководство по интеграции

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3.9.3 iTOW timestamps........................................................................................................................31
3.9.4 GNSS times................................................................................................................................... 31
3.9.5 Time validity.................................................................................................................................. 31
3.9.6 UTC representation..................................................................................................................... 32
3.9.7 Leap seconds................................................................................................................................ 33
3.9.8 Real-time clock............................................................................................................................. 33
3.9.9 Date.................................................................................................................................................33
3.10 Timing functionality...........................................................................................................................34
3.10.1 Time pulse...................................................................................................................................34
3.11 Security.................................................................................................................................................38
3.11.1 Spoofing detection / monitoring............................................................................................ 38
3.11.2 Jamming/interference detection / monitoring....................................................................38
3.11.3 Consolidated signal security information............................................................................ 39
3.11.4 GNSS receiver integrity............................................................................................................39
3.12 u-blox protocol feature descriptions.............................................................................................. 40
3.12.1 Broadcast navigation data...................................................................................................... 40
3.12.2 Save-on-shutdown feature...................................................................................................... 49
3.12.3 Spectrum analyzer.................................................................................................................... 49
3.12.4 Sky view signal masking.......................................................................................................... 50
3.13 Forcing a receiver reset.....................................................................................................................51
3.14 Firmware upload................................................................................................................................. 52
4 Design..................................................................................................................................... 53
4.1 Pin assignment......................................................................................................................................53
4.2 Power supply..........................................................................................................................................53
4.2.1 VCC: Main supply voltage.......................................................................................................... 53
4.2.2 RCB-F9T VCC_ANT: Antenna power supply.......................................................................... 54
4.3 Antenna...................................................................................................................................................54
4.4 EOS/ESD precautions.......................................................................................................................... 55
4.4.1 ESD protection measures.......................................................................................................... 56
4.4.2 EOS precautions...........................................................................................................................56
4.4.3 Safety precautions...................................................................................................................... 56
4.5 Electromagnetic interference on I/O lines.......................................................................................57
4.5.1 General notes on interference issues...................................................................................... 57
4.5.2 In-band interference mitigation................................................................................................58
4.5.3 Out-of-band interference........................................................................................................... 58
4.6 Thermal management......................................................................................................................... 58
5 Product handling................................................................................................................. 59
5.1 ESD handling precautions.................................................................................................................. 59
Appendix.................................................................................................................................... 60
A RCB-F9T default configurations...........................................................................................................60
B Glossary......................................................................................................................................................60
C RCB-F9T PCB dimensions......................................................................................................................61
Related documents................................................................................................................ 62
Revision history....................................................................................................................... 63