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VTG-Course Over Ground and Ground Speed
Name
Message ID
Course
Reference
Course
Reference
Speed
Units
Speed
Units
Checksum
<CR><LF>
2.2 NMEA Input Command
. Set Serial Port
A)
This command message is used to set the protocol(SiRF Binary, NMEA, or
USER1) and/or the communication parameters(baud, data bits, stop bits, parity).
Generally,this command would be used to switch the module back to SiRF Binary
protocol mode where a more extensive command message set is available. For
example,to change navigation parameters. When a valid message is received,the
parameters will be stored in battery backed SRAM and then the receiver will restart
using the saved parameters.
Format:
$PSRF100,<protocol>,<baud>,<DataBits>,<StopBits>,<Parity>*CKSUM
<CR><LF>
<protocol>
<baud>
<DataBits>
$GPVTG,309.62,T,,M,0.13,N,0.2,K*6E
Example
$GPVTG
309.62
T
M
0.13
N
0.2
K
*6E
ID:100 Set PORTA parameters and protocol
Units
VTG protocol header
degrees
Measured heading
True
degrees
Measured heading
Magnetic
knots
Measured horizontal speed
Knots
Km/hr
Measured horizontal speed
Kilometers per hour
End of message termination
0=SiRF Binary, 1=NMEA, 4=USER1
1200, 2400, 4800, 9600, 19200, 38400
8,7. Note that SiRF protocol is only valid f8
Description
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