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RoyalTek RGM-3000/REB-3000 
GPS Module Operational Manual) 
 
1 
RoyalTek GPS Module: RGM-3000/REB-3000101 Operational Manual 
 
I
NTRODUCTION
......................................................................................................................................... 1
 
P
RODUCT 
F
EATURES
................................................................................................................................ 1
 
P
RODUCT APPLICATIONS
........................................................................................................................... 1
 
T
ECHNIQUE DESCRIPTION
.......................................................................................................................... 1
 
P
ICTURE
.................................................................................................................................................. 2
 
RGM-3000E ....................................................................................................................................... 2
 
RGM-3000L ....................................................................................................................................... 2
 
RGM-3000M ...................................................................................................................................... 2
 
REB-3000 .......................................................................................................................................... 3
 
RGM-3000/REB-3000 S
ERIES 
S
YSTEM 
B
LOCK 
D
IAGRAM
.......................................................................... 3
 
T
ECHNIQUE SPECIFICATIONS
...................................................................................................................... 5
 
RGM-3000/REB-3000 Mechanical Layout ......................................................................................... 6
 
H
ARDWARE INTERFACE
............................................................................................................................. 9
 
A
BSOLUTE MAXIMUM RATINGS
.................................................................................................................. 10
 
C
RITICAL DESIGN GUIDE AND DIAGRAM
...................................................................................................... 10
 
D
ESIGN 
L
AYOUT 
D
IAGRAM
...................................................................................................................... 11
 
NMEA V2.2 P
ROTOCOL
......................................................................................................................... 12
 
GGA-Global Positioning System Fixed Data.................................................................................... 13
 
GLL-Geographic Position – Latitude/Longitude ............................................................................... 13
 
GSA-GNSS DOP and Active Satellites ............................................................................................ 13
 
GSV-GNSS Satellites in View .......................................................................................................... 14
 
RMC-Recommended Minimum Specific GNSS Data....................................................................... 14
 
VTG-Course Over Ground and Ground Speed ................................................................................ 15
 
S
I
RF P
ROPRIETARY 
NMEA I
NPUT 
M
ESSAGES
.......................................................................................... 15
 
SIRF NMEA Input Messages ........................................................................................................... 16
 
Set Serial Port.................................................................................................................................. 16
 
Set DGPS Port................................................................................................................................. 17
 
Query/Rate Control .......................................................................................................................... 17
 
LLA Navigation Initialization ............................................................................................................. 18
 
Development Data On/Off................................................................................................................ 19
 
Calculating Checksums for NMEA Input .......................................................................................... 19
 
S
I
RF B
INARY 
P
ROTOCOL
........................................................................................................................ 19
 
Initialize Data Source-Message I.D. 128.......................................................................................... 21
 
Switch To NMEA Protocol – Message I.D. 129 ................................................................................ 22
 
Set Almanac- Message I.D. 130 ...................................................................................................... 22
 
DGPS Source – Message I.D. 133 .................................................................................................. 23