Rainbow Electronics GM-R900 User Manual

GM-R900 GPS Receiver

EverMore GM-R900 series is a high sensitivity GPS receiver , This product is based on
SiRF starIII chipset in 20 channel GPS receivers solution. The GPS module receiver will
track up to 20 satellites at a time while providing fast time-to-first-fix and 1Hz navigation
updates. It is far reaching capability meets the sensitivity & accuracy requirements of
car navigation as well as other location-based applications, such as AVL system. PDA,
Notebook operated navigation system.

The GM-R900 design utilizes the latest surface mount technology and high level circuit
integration to achieve superior performance while minimizing dimension and power
consumption. This hardware capability combined with software intelligence makes the
board easy to be integrated and used in all kinds of navigation applications or product s.
The module communicates with application system via RS-232 level with NMEA-0183
protocol.

Features:

z SiRF starIII Chipset 20 Channels all in view tracking
z High Sensitivity -159dBm
z Reacquisition Time: 0.1 second
z Support Standard NMEA-0183 at 4800 bps baud rate
z On-board rechargeable battery sustained real-time clock and

memory for fast satellite acquisition during power-up

z Dimension/Weight: 56mmx53mmx22.5mm/96g

EverMore Technology, Inc.

2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 300, R.O.C. http://www.emt.com.tw

GM-R900 GPS Receiver

Applications:

z Land/Marine Navigation
z Telematics
z Fleet Management
z Asset Tracking
z Timing Reference

Specification:

Features Description
General L1 1575.42MHz, C/A code, 20-channel all in view

tracking
Sensitivity -159 dBm (typical)
Update Rate 1 Hz
Accuracy Position: <15m(95%) without S/A

Velocity: 0.1 m/sec without S/A

Time: ± 100ns synchronized to GPS time
Acquisition Cold start: 42sec average

Warm start: 38sec average

Hot start : 1sec average
Dynamics Altitude : 18,000m Max

Velocity: 83m/s

Acceleration: 4g Max
Reacquisition Time 0.1 second
Datum WGS-84
Protocol NMEA-0183 V2.2 , Baud rate: 4800 , 8-None-1

NMEA Message Default : GGA, GSA, GSV, RMC
Primary Power 5VDC ± 0.5Vp-p ripple
DC Current 80 mA

Operation Temperature -40oC to +80oC
Storg Temperatur e -45oC to +85oC
Operating Humidity 5% to 90% non-condensing
Antenna Built-in Patch Antenna
Interface Connector Standard : PS/2 Female

Optional :USB Cable or Car Charger for PDA
Dimension/ Weight 56 mm x 53 mm x 22.5mm / 96g

* Preliminary Specification, Subject To Change without Notice

EverMore Technology, Inc.

2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 300, R.O.C. http://www.emt.com.tw