Gotop GT-1612-MTBD, Руководство пользователя

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GT-1612-MTBD
GPS&Beidou Receiver Module
www.gotop-zzu.com Page 19 of 35 Revision: V2.0.1-January 2015
2.8. LOCUS
GT-1612-MTBD module supports the embedded logger function called LOCUS. It can log position information to
the internal flash memory automatically when this function is enabled by sending PMTK command
“
$PMTK183,0*22
”
.Due to this function, the host can go to sleep to save power consumption and does not need to
receive the NMEA information all the time. The module can provide a log capacity of more than 16 hours.
The detail procedures of this function are illustrated bellow:

The module has fixed the position (only 3D_fixed is available);

Sending PMTK command “$PMTK184,1*22” to erase internal flash;

Sending PMTK command “$PMTK185,0*22” to start log;

Module logs the basic information (UTC time, latitude, longitude and height) every 15 seconds to internal flash
memory;

Stop logging the information by sending “$PMTK185,1*23”;

Host can get the data from the module via UART by sending“$PMTK622,1*29”.
The raw data which host gets has to be parsed via LOCUS parser code provided by GOTOP. For more details,
please contact GOTOP technical supports.
2.9. Antenna Supervisor
Antenna Supervisor is designed to detect different external active antenna status including external active antenna
connection, open circuit for antenna and antenna short-circuited, and then notify the module. The detections and
notifications of external active antenna are listed in the following table.
Table 7: Status of the Antenna
Status of the Antenna EXT/Patch NMEA Message
External Active Antenna is not Inserted Patch OPEN
External Active Antenna is Inserted and Worked Normally EXT OK
External Active Antenna is Inserted but Short-circuited Patch SHORT