Cayman Systems 2E-H-W Manual de usuario descargar pdf (Pagina 25)

NMEA Manual based on MediaTek chipset - Manual

Reply:

$PMTK001,352,3*34<CR><LF>

This message applies only for MT333X based receivers IT530, IT530M, UC530 and UC530M.

2.32 PMTK353 API SET GNSS SEARCH MODE

Command purpose:

This command is used to configure the constellations used in navigation.

Default setting is both Glonass and GPS enabled.

Command number: 353

DataField:

PMTK353,GPS_Enabled,GLONASS_Enabled

GPS_Enabled: ‘0’: disable (DO NOT search GPS satellites)

‘1’ or non-Zero: search GPS satellites

GLONASS_Enabled: ‘0’: disable (DO NOT search GLONASS satellites)

‘1’ or non-ZERO: search GLONASS satellites

Example:

$PMTK353,0,1*36<CR><LF> : Search GLONASS satellites only

$PMTK353,1,0*36<CR><LF> : Search GPS satellites only

$PMTK353,1,1*37 : Search GPS and GLONASS satellites

Reply:

$PMTK001,353,3*35<CR><LF>

This message applies only for MT3339 based receivers IT530M and UC530M

2.33 PMTK386 API SET STATIC NAV THD MT333X

Command purpose:

Set the speed threshold for static navigation. If the actual speed is below the threshold, then the output position

will stay the same, and the output speed will be zero. If the threshold value is set to 0, this function is disabled.

Command number: 386

DataField:

PMTK386,speed_threshold

speed_threshold: 0=disable; >0 = speed threshold in m/s

The minimum is 0.1 m/s, the maximum is 2.0 m/s.

Example:

$PMTK386,0.7*3A<CR><LF>

Reply:

$PMTK001,386,3*3D<CR><LF>

This message applies only for MT333X based receivers IT530, IT530M, UC530 and UC530M.

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Cayman Systems 2E-H-W Manual de usuario Pagina 25