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Pin Assignment
Pin Explanation
VIN (DC power input): This is the main DC supply for a 4.5V ~6.5 DC input power.
TX: This is the main transmits channel for outputting navigation and measurement data to user's
navigation software or user written software.
RX: This is the main receive channel for receiving software commands to the engine board from
SiRFdemo software or from user written software.
GND: GND provides the ground for the engine board. Connect all grounds.
3. Software Commands
NMEA Output Command
GGA-Global Positioning System Fixed Data
Table B-2 contains the values for the following example:
$GPGGA,161229.487,3723.2475,N,12158.3416,W,1,07,1.0,9.0,M,,,,0000*18
Table B-2 GGA Data Format
Name
Message ID
UTC Time
Latitude
N/S Indicator
Longitude
E/W Indicator
Position Fix Indicator
Satellites Used
HDOP
ER-411
Example
Units
$GPGGA
161229.487
3723.2475
N
12158.3416
W
1
07
1.0
Page 5 of 13
Description
GGA protocol header
hhmmss.sss
ddmm.mmmm
N=north or S=south
dddmm.mmmm
E=east or W=west
See Table B-3
Range 0 to 12
Horizontal Dilution of Precision
Specifications are subject to be changed without notice.
Version 1.3.1
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