u-blox ANTARIS 4 - NMEA Protocol

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4.4.3.4 UBX Message Flow
Therearecertainfeaturesassociatedwiththemessagesbeingsentbackandforth:
• Acknowledgement
ssagesfromtheCla ttothereceiver,thereceiverwillsendanAcknowledgeoraNot
agebackt thesender,dependingonwhetherornotthemessagewasprocessed
• PollingMechanism
ou
There is not a single specific me s designed, that
w e essage with n

mess
Toc utputmessage
4 4. otocol
The l is an indus e electronics and was
o  to allow data  ships.
Nowadays,itisa de-factostandar d
pleasereferto“NMEA
0183Stan onicDevices",Version2.300,March1,1998.
T ecification of the  p at
http://www.nmea.org.
 Note UBX protocol offers ol. It’s
optimized to commun est performance and optimal
ugging.
4.4.4.1 NMEA Protocol Overv
The ASCII-b d.
GPS
  start w at
follows.NMEAmessageshavea c ows
thestructureofaNMEAprotocol
Whenme ssCFGaresen
Acknowledgemess
corr
o
ectly.

Mostmessagesthatcanbe tputbythereceivercanalsobepolled.
ssage, which polls any other message. The UBX protocol wa
h n sending a m
ageispolled.
o payload (or just a single parameter which identifies the poll request)
 the
onfigureUBXo stoaspecificrepetitionrateuseUBX-CFG-MSG.
. 4 NMEA Pr
NMEA protoco try-standard protocol that was developed for marin
riginally designed  exchange between various sensors and navigation equipment aboard
dforGPSreceiverdataoutput.ForfurtherinformationontheNMEAStandar
dardForInterfacingMarineElectr
he full sp rotocol is available from the National Marine Electronics Association
a greater flexibility and more powerful messages than NMEA protoc
icate with u-center AE software to get the b
deb
iew
NMEA protocol is an
specific messages all
ased protocol. Records start with a $ and end with carriagereturn/line fee
ith $GPxxx where xxx is a three-letter identifier of the message data th
hecksum,whichallowsdetectionofcorrupteddatatransfers.Figure 72sh
message.
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) ReceiverDescription
GPS.G4-MS4-05007-A1
  Page 85