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Rgm-3550lp user manual – RoyalTek RGM-3550LP User Manual

Page 16

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16

RGM-3550LP User Manual

Table 6 GGA Data Format

Name Example

Units

Description

Message ID

$GPRMC

RMC protocol header

UTC Position

161229.487 hhmmss.sss

Status

A

A=data valid or V=data not valid

Latitude 3723.2475

ddmm.mmmm

N/S Indicator

N

N=north or S=south

Longitude 12158.3416

dddmm.mmmm

E/W Indicator

W

E=east or W=west

Speed Over Ground

0.13

knots

Course Over

Ground

309.62 degrees

True

Date 120598

ddmmyy

Magnetic Variation

degrees

E=east or W=west

Checksum *10

<CR><LF>

End of message termination

VTG-Course Over Ground and Ground Speed

Table 7 contains the values of the following example:

$GPVTG, 309.62, T, , M, 0.13, N, 0.2, K*6E

Table 7 VTG Data Format

Name Example

Units

Description

Message ID

$GPVTG

VTG protocol header

Course 309.62

degrees Measured

heading

Reference T

True

Course

degrees Measured

heading

Reference M

Magnetic

Speed

0.13

knots

Measured horizontal speed

Units N

Knots

Speed

0.2

km/hr

Measured horizontal speed

Units

K

Kilometer per hour

Checksum *6E

<CR><LF>

End of message termination