Reyax RSS8833 Software Manual Download Page 26

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2020, REYAX TECHNOLOGY CO., LTD.

RYS8830 RYS8833

`GNSS Module Software Guide

VTG: Course Over Ground & Ground Speed

Format : $--VTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh

<CR><LF>

Field

Format

Description

Header

Talker ID

GP : Using only GPS for positioning
GL : Using only GLONASS for
positioning
QZ : Using only QZS for positioning
GN : Using combined satellite systems
for positioning

Sentence ID

VTG

Course over ground - True

x.x,T

[degrees]

Course over ground -
Magnetic

x.x,T

NULL

Speed over ground

x.x,N

[knot]

Speed over ground

x.x,K

[km/h]

Mode Indicator

A : Autonomous mode
D : Differential mode

E : Dead reckoning mode
N : Data not valid

Checksum

*hh

Termination

Summary of Contents for RSS8833

Page 1: ...RYS8830 RSS8833 1 Jan 2020 56312E34 GNSS Module Software Guide...

Page 2: ...merSetup exe Please open a dialog window by selecting Setup S Serial Port S Then you should put following parameter on the window Port Number This depends on your PC system Baud rate 115200 Data 8bit...

Page 3: ...IDLE mode GSTP Command input procedure In the case of use communication terminal software other than a GNSS monitor positioning operation will be started if a command is inputted below It is required...

Page 4: ...tion 8 10 Cold start 8 11 GPS ephemeris data acquisition 8 12 GPS ephemeris data injection 9 13 Positioning use satellite setting 9 14 Receiver position setting ellipsoidal coordinates 10 15 Receiver...

Page 5: ...17 33 Sleep 18 34 Firmware revision number acquisition 18 35 Wake up 18 NMEA sentence specifications 19 1 GGA Global Positioning System Fix Data 19 2 GLL Geographic Position Latitude Longitude 20 3 GN...

Page 6: ...ata save ON OFF Syntax Response ABUP arg 1 ABUP Done This command is used to control the automatic backup data save function When 1 is specified for the argument the backup data contents are saved in...

Page 7: ...ut NMEA sentence bit0 GGA bit1 GLL bit2 GSA bit3 GSV bit4 GNS bit5 RMC bit6 VTG bit7 ZDA bit8 Reserved bit9 Reserved bit10 Reserved bit11 Reserved bit12 Reserved bit13 Reserved bit14 Reserved bit15 Re...

Page 8: ...sure that the Done response is received at the original baud rate When the command has failed the original baud rate is not changed In the default status the baud rate is set to 115200 bps Argument Fi...

Page 9: ...YS8830 Transmit the GPS almanac data binary data following the Ready response from the RYS8830 The GPS almanac data size is 2048 bytes In addition the data which is actually required has the header an...

Page 10: ...3 Positioning use satellite setting Syntax Response GNS GNS Done This command is used to select the satellite systems to be used for positioning The satellite systems are assigned to the bits of the a...

Page 11: ...conds of the receiver using an integer arg 4 This specifies the longitude degrees of the receiver using an integer arg 5 This specifies the longitude minutes of the receiver using an integer arg 6 Thi...

Page 12: ...S arg 1 GPPS Done This command is used to control 1PPS output When 1PPS output is enabled timing pulse is output in 1 sec period from 1PPS output port after clock information being received from GNSS...

Page 13: ...p time must be kept certainly set the parameters so that the operation time may be 1 minute or more When the Low power mode is used set the positioning cycle to the value over 30sec Argument Field Des...

Page 14: ...d is used to start positioning using a hot start The TTFF is prioritized until first fix TTFF is about 1s shorter than GSP but the position accuracy is somewhat worse than GSP There is no difference w...

Page 15: ...ples of commands GTCX 250 CR LF TCXO offset 250Hz GTCX 100 CR LF TCXO offset 100Hz 24 GPS test end Syntax Response GTE GTE Done This command is used to end the GPS test When the test is ended using th...

Page 16: ...nd is issued and then issue the command The CN level and Doppler frequency are returned as the test results Argument None 27 GPS test start Syntax Response GTS arg 1 arg 2 arg 3 arg 4 GTS Done This co...

Page 17: ...ging the receiver by thehand bit 1 reserved always specify 0 for this bit 2 reserved always specify 0 for this bit 3 reserved always specify 0 for this bit 4 reserved always specify 0 for this bit 5 r...

Page 18: ...acquire the GLONASS ephemeris data which has been received by RYS8830 When the command is received the RYS8830 transmits the GLONASS ephemeris data binary data to the host controller The GLONASS ephe...

Page 19: ...n Reboot Argument Field Description arg 1 This selects whether to transfer to the Sleep state or Deep Sleep state 0 Transfer to Sleep 0 1 Transfer to Sleep 1 2 Transfer to Sleep 2 34 Firmware revision...

Page 20: ...Field Format Description Header Talker ID GP Sentence ID GGA UTC of position hhmmss ss hh hour mm min ss ss sec Latitude llll ll dd degree mm mmmm min Latitude N S a N North latitude S South latitude...

Page 21: ...S for positioning GN Using combined satellite systems for positioning Sentence ID GLL Latitude llll ll dd degree mm mmmm min Latitude N S a N North latitude S South latitude Longitude yyyyy yy ddd deg...

Page 22: ...UTC of position hhmmss ss hh hour mm min ss ss sec Latitude llll ll dd degree mm mmmm min Latitude N S a N North latitude S South latitude Longitude yyyyy yy ddd degree mm mmmm min Longitude E W a E...

Page 23: ...output on the line of GPS SVIDs are over 193 Format GSA a x xx xx xx xx xx xx xx xx xx xx xx xx x x x x x x hh CR LF Field Format Description Header Talker ID GP Using only GPS for positioning GL Usi...

Page 24: ...Total number of sentences x Sentence number x Total number of satellites in view xx SV1 Satellite ID xx Elevation xx degree Azimuth xxx degree SNR C N xx dB Hz NULL at no acquisition SV2 Satellite ID...

Page 25: ...for positioning Sentence ID RMC UTC of position fix hhmmss ss hh hour mm min ss ss sec Status A A Data valid V Data not valid Latitude llll ll dd degree mm mmmm min Latitude N S a N North latitude S S...

Page 26: ...ly GPS for positioning GL Using only GLONASS for positioning QZ Using only QZS for positioning GN Using combined satellite systems for positioning Sentence ID VTG Course over ground True x x T degrees...

Page 27: ...rmat Description Header Talker ID GP Using only GPS for positioning GL Using only GLONASS for positioning QZ Using only QZS for positioning GN Using combined satellite systems for positioning Sentence...

Page 28: ...et value etc are stored are retained so the conditions required for hot start are retained After wakeup the program is rebooted Sleep 2 In this state the power of all the blocks except for the real ti...

Page 29: ...time with each positioning cycle and the positioning operation is performed continuously for the remaining time of the positioning cycle Low Power In this mode the positioning operation is performed a...

Page 30: ...the rest of the time When the time subtracting sleep time from positioning cycle that is operating time is under 60sec the RYS8830 continues to work at the Exec state until position fixed as shown in...

Page 31: ...certain level the RYS8830 transits to the intermittent operation from next positioning cycle to achieve low power consumption The RYS8830 works by alternating between Sleep the positioning cycle 15se...

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