Altina GGM308U - Manual (Page 3)

1 OVERVIEW
Congratulation on your purchase of Altina, which manufacture and provide various
GPS applications. Altina’s GGM308U GPS Receiver provides you various applications
such as car navigation, marine navigation, mapping, surveying, security, agriculture and so
on. It communicates with device (such as PocketPC or notebook) via compatible
dual-channel through RS-232 or TTL and saves satellite data by built–in backup memory.
Low power consumption technology enables GGM308U and your device to save more
operating power. Furthermore, GGM308U can track up to 12 satellites at a time,
re-acquire satellite signals in 100ms and update position data every second.
Trickle-Power allows the unit to operate a fraction of the time, and Push-to-Fix permits user
to have a quicker position fix even though the receiver stays off.
2 PRODUCT FEATURE
SiRF Star e/LP ”High Performance and Low Power Consumption Chipset
Integrated ARM7TDMI CPU
Cold Start : within 45 seconds.
A rechargeable battery sustains internal clock and memory and can be recharged
during normal operation.
All-in-View 12-channel parallel processing.
Support NMEA 0183 V2.2 command
Optional communication levels, RS-232 and TTL
Reacquisition Time: 0.1 seconds
Support Accurate 1PPS Output Signal Aligned with GPS Timing
Water proof design enable receiver to continuously operate for 4 days under
1meter water deep.
Built-in hardware Tracking Loop Processor WAAS/EGNOS Demodulator and
NDGPS/U.S. Coast Guard Beacon support
Obvious LED display status: LED provides users visible positioning status. LED
“ON” : power connected; “BLINKING”: positioned.
3
Differential capability utilizes real-time RTCM corrections to provide 1-5 meter
precise position accuracy.