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1 INTRODUCTION
............................................................................................... 5
1.1 O
VERVIEW
............................................................................................................. 5
1.2 F
EATURES
.............................................................................................................. 5
2 RECEIVER OPERATION
............................................................................... 6
3 HARDWARE INTERFACE
............................................................................. 7
3.1 RF C
ONNECTOR
.................................................................................................... 7
3.2 I
NTERFACE
C
ONNECTOR
........................................................................................ 7
3.3 M
ECHANICAL
D
IMENSIONS AND
I
NTERFACE
C
ONNECTOR
..................................... 8
3.4 I
NTERFACE
C
ONNECTOR
P
IN
O
UT
.......................................................................... 9
3.4.1 Molex Connector JP3
........................................................................................ 9
3.4.2 Pin Header Connector JP2.............................................................................. 10
3.5 O
NE
-P
ULSE
-P
ER
-S
ECOND
O
UTPUT
.......................................................................11
3.6 RTCM D
IFFERENTIAL
D
ATA
................................................................................11
4 SOFTWARE INTERFACE
............................................................................ 12
4.1 NMEA OUTPUT MESSAGE SPECIFICATION.............................................. 12
4.1.1 NMEA Checksum Calculation.......................................................................... 12
4.1.2 GGA – Global Positioning System Fix Data...................................................... 13
4.1.3 GLL – Geographic Position – Latitude / Longitude ........................................... 14
4.1.4 GSA – GNSS DOP and Active Satellites............................................................ 15
4.1.5 GSV – GNSS Satellites in View......................................................................... 16
4.1.6 RMC – Recommended Minimum Specific GNSS Data........................................ 17
4.1.7 VTG – Course Over Ground and Ground Speed ................................................ 18
4.2 EVERMORE BINARY MESSAGE SPECIFICATION .................................... 19
4.2.1 Binary Input Messages .................................................................................... 21
4.2.1.1 EverMore Binary Input Message 0x80: Initialization
.......................................... 21
4.2.1.2 EverMore Binary Input Message 0x81: Data Logging
......................................... 22
4.2.1.3 EverMore Binary Input Message 0x86: Set Elevation Mask
................................. 22
4.2.1.4 EverMore Binary Input Message 0x87: Set DOP Mask
....................................... 22
4.2.1.5 EverMore Binary Input Message 0x8F: Set Operating Mode
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4.2.1.6 EverMore Binary Input Message 0x94: Differential GPS Control
.......................... 24