DS-41SMD-2 June ’06

©2006 RF Solutions Ltd, www.rfsolutions.co.uk

Page 11

Tel 01273 898000 Fax 01273 480661

Embedded GPS Module

GPS-41SMDR

GPS-41SMDF

VTG - COURSE OVER GROUND AND GROUND SPEED

Velocity is given as course over ground (COG) and speed over ground (SOG).

Format:

GPVTG,<1>,T,<2>,M,<3>,N,<4>,K,<5>*<6><CR><LF>

Example:

$GPVTG,221.0,T,224.3,M,016.0,N,0029.6,K,A*1F<CR><LF>

Field

Example

Description

1

221.0

True course over ground, 000.0 ~ 359.9 degrees

2

224.3

Magnetic course over ground, 000.0 ~ 359.9 degrees

3

016.0

Speed over ground, 000.0 ~ 999.9 knots

4

0029.6

Speed over ground, 0000.0 ~ 1800.0 kilometers per hour

5

A

Mode indicator

‘N’ = Data invalid

‘A’ = Autonomous

‘D’ = Differential

‘E’ = Estimated

6

1F

Checksum

ZDA TIME AND DATE

Format:

$GPZDA,<1>,<2>,<3>,<4>,<5>,<6>*<7><CR><LF>

Example:

$GPZDA,104548.04,25,03,2004,,*6C<CR><LF>

Field

Example

Description

1

104548.04

UTC time in hhmmss.ss format, 000000.00 ~ 235959.99

2

25

UTC time: day (01 ... 31)

3

03

UTC time: month (01 ... 12)

4

2004

UTC time: year (4 digit year)

5

Local zone hour

Not being output by the receiver (NULL)

6

Local zone minutes

Not being output by the receiver (NULL)

7

6C

Checksum

Binary Messages

See Binary Message Protocol User’s Guide, DS-41COM for detailed descriptions.

RF Solutions Ltd.,

Unit 21, Cliffe Industrial Estate,

South Street, Lewes, E Sussex, BN8 6JL. England

Tel +44 (0)1273 898 000

Fax +44 (0)1273 480 661

Email sales@rfsolutions.co.uk

http://www.rfsolutions.co.uk