
Appendix A. CRBasic Programming Instructions
491
GPS
UsedwithaGPSdevicetokeeptheCR3000clockcorrectorprovideother
informationfromtheGPSsuchaslocationandspeed.Properoperationofthis
instructionmayrequireafactoryupgradeofon‐boardmemory.
Syntax
GPS(GPS_Array, ComPort, TimeOffsetSec, MaxErrorMsec,
NMEA_Sentences)
Note To change from the GPS default baud rate of 38400, specify the new baud
rate in the SerialOpen() instruction.
HydraProbe
ReadstheStevensVitelSDI‐12HydraProbesensor.
Syntax
HydraProbe(Dest, SourceVolts, ProbeType, SoilType)
LI7200
CommunicateswiththeLI7200openpathCO
2
andH
2
Osensor.
Syntax
LI7200(Dest, Reps, SDMAddress, Command)
LI7700
CommunicateswiththeLI7700openpathCO
2
andH
2
Osensor.
Syntax
LI7200(Dest, Reps, SDMAddress, Command)
TGA
MeasuresaTGA100Atrace‐gasanalyzersystem.
Syntax
TGA(Dest, SDMAddress, DataList, ScanMode)
Therm107
MeasuresaCampbellScientific107thermistor.
Syntax
Therm107(Dest, Reps, SEChan, Vx/ExChan, SettlingTime, Integ,
Mult, Offset)
Therm108
MeasuresaCampbellScientific108thermistor.
Syntax
Therm108(Dest, Reps, SEChan, Vx/ExChan, SettlingTime, Integ,
Mult, Offset)
Therm109
MeasuresaCampbellScientific109thermistor.
Syntax
Therm109(Dest, Reps, SEChan, Vx/ExChan, SettlingTime, Integ,
Mult, Offset)
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