User Manual for BX40C GNSS Board v2.0
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5.Typical Application
5.1 Data Collection on Internal eMMC
The BX40C board is embedded with up to 8GB internal eMMC chip, which
brings convenience for data collection.
Before data collection, please make sure enough space is available on
the internal eMMC chip.
!
The size of the logging:Collect raw measurements at 1Hz(about
110KByte/min if 20 satellites are tracked, about 165KByte/min if 30
satellites are tracked)If the collection frequency increases, the data
size would increase proportionately.
The detailed steps for static data collection are as follows:
UNLOGALL
//remove all logs
LOG FILE RANGECMPB ONTIME 15.00 NOHOLD
//save the
compressed version of the RANGE log
LOG FILE GPSEPHEMB ONCHANGED NOHOLD
//save the
decoded GPS ephemeris.
LOG FILE BDSEPHEMERISB ONCHANGED NOHOLD
//save the
decoded BDS ephemeris.
LOG FILE GLOEPHEMERISB ONCHANGED NOHOLD
//save the
decoded GLONASS ephemeris.
LOG FILE GALINAVEPHEMERISB ONCHANGED NOHOLD
//save the
decoded Galileo INAV ephemeris
LOG FILE QZSSEPHEMERISB ONCHANGED NOHOLD
//save the
decoded QZSS ephemeris
SAVECONFIG
//save configuration
