ER-411
Specifications are subject to be changed without notice.
Page 5 of 13
Version 1.3.1
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
Example
Units
Description
Message ID
$GPGGA
GGA protocol header
UTC Time
161229.487
hhmmss.sss
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
Position Fix Indicator
1
See Table B-3
Satellites Used
07
Range 0 to 12
HDOP
1.0
Horizontal Dilution of Precision
