SiRF StarIII Low Power Consumption Chipset 
 
Integrated ARM7TDMI CPU
 
Cold Start : within 50 seconds
 
20 channels for fast acquisition and reacquisition
 
A rechargeable battery sustains internal clock and memory. The battery is recharged during normal operation
 
Support NMEA 0183 V2.2 command
 
Differential capability utilizes real-time RTCM corrections producing 1-5 meter position accuracy.
 
User initialization is not required.
 
Dual communication channels and user selectable baud rates allow maximum 
interface capability and flexibility.
 
Optional communication levels RS-232 and TTL meet ordinary application 
and new fashions of connecting PDA with TTL or RS-232 output.
 
Built-in WAAS Demodulator.
 
LED display status: The LED provides users visible positioning status. 
LED "BLINKING" when power connected and "ON" when GM-210 got positioned.
FLASH base program memory.

Specification
Key Feture 
Frequency L1, 1575.42 MHz 
C/A Code 1.023 MHz chip rate 
Channels 20  
Sensitivity Acquisition : -144~ -149 dBm Tracking : -155~ -160dBm 
Non DGPS (Differential GPS) 
Position Horizontal 5 to 25 meter CEP, without SA 
Velocity 0.1 meter/second, without SA 
Time 1 microsecond synchronized GPS time 
DGPS (Differential GPS) 
Position Horizontal 1 to 5 meter, typical 
Velocity 0.05 meter/second, typical 
EGNOS/ WAAS  < 2.2 m, horizontal 95% of time 
Datum WGS 84 
Performance 
Hot start 2 sec., average 
Warm start 38 sec., average  
Cold start 50 sec., average 
Reacquisition 0.1 sec. average 
GPS Protocol Default: NMEA 0183 V2.2 (Secondary: SiRF binary) 
GPS Output Data SiRF binary >> position, velocity, altitude, status and control; 
NMEA 0183 protocol, and supports command: 
GGA,GSA,GSV,RMC,VTG,GLL(VTG and GLL are optional) 
GPS transfer rate Software command setting (Default : 4800 ,n,8,1 for NMEA ) 
Acceleration Limit Less than 4g 
Altitude Limit 18,000 meters 
Velocity Limit 515 meters/sec. (1,000 knots) max 
Jerk Limit 20 meters/second, max 
Operating -40oC to +85oC(internal temperature). 
Storage -45oC to +100oC 
Input Voltage +4.75 ~ 5.5 VDC without accessories 
Power consumption <80mA at 4.5- 5.5V input 
Dimension 1.69" x 1.47" x 0.66" (43mm x 37.5mm x 16.99mm) 
Weight 80g 


Applications
Vehicle Tracking & Location-based Services
Marine and boaters guidance
Car navigation, Automobile tracking and security system
Mobile and navigation consumer application
Personal navigation or touring devices
Mapping devices, auto pilot
Fleet management
GPS clock and digital camera