Rainbow Electronics GM-R307 User Manual
GM-R307
Low-Power Receiver for GPS Applications
The GM-R307 GPS receiver provides EverMore’s
latest 12-channel GPS technology, contained inside a
mouse-like box with a host connection cable.
The GM-R307 pushes forward EverMore’s high
standard for rapid startup time and high performance in
foliage and urban canyon environments. Applications will
benefit from improved reliability provided by newest GPS
kernel firmware. With sophisticated system design, the
GM-R307 provides robust performance for users who
need an economical GPS solution.
The GM-R307 feature set includes NMEA-0183
output, on USB I/O port, and position & velocity filtering.
With Flash-based program memory, the firmware is
upgradeable, thus protecting your GPS investment.
The GM-R307 is an all-in-one GPS receiver that is
designed for the end-users with less understanding on
GPS knowledge. It is ready for use with PDA, Notebook,
and PC in various situations: Marine, Land Survey, travel
assistance and Vehicle tracking.
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-R307
Low-Power Receiver for GPS Applications
Features
z Easy USB connector to PC/Notebook
z Built-in patch antenna
z Enhance LED indicator
z Receiver, Twelve parallel tracking channels
z Fast TTFF and low power consumption
z On-board rechargeable battery sustained
real-time clock and memory for fast satellite
acquisition during power-up
z Automatic cold start with no user initialization
required
Performance Specifications
General: L1 1575.42MHz, C/A code, 12-channel,
Carrier-Aided with HWTrack©
Sensitivity: -143 dBm Minimum
Update Rate: 1Hz
Environmental Specifications
Operation Temperature: -30°C to + 80°C
Storage Temperature: -40°C to + 90°C
Operating Humidity: 5% to 95%
Physical Characteristics
Primary Power: 5V dc ± 0.5Vp-p ripple
Input Current: Max. 162mA
Serial Ports: USB Level
Dimensions: 2.29” L x 1.57” W x 0.84” H
(58.2mm x 39.9 mm x 21.5 mm)
Weight: 2.71oz (77g)
User Protocol
Protocols: EverMore @ 4800/9600baud, 8N1
NMEA-0183 v2.20 @ 4800 baud, 8N1
NMEA Messages: GGA, GLL, GSA, GSV, RMC, and VTG
Interface Connector
Accuracy: Position: 15m CEP without S/A
Velocity: 0.1m/sec without S/A
Time: ± 1µs
Acquisition: Cold start: < 120sec average
Warm start: < 45sec
Hot start: < 15sec
Reacquisition: < 100millisecond
Dynamics: Altitude: -1000m to + 18,000m
Velocity: 500m/sec
Acceleration: ±4g
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
USB: Support host USB-to-serial driver
Applications
z Land/Marine Navigation
z Telematics
z Fleet Management
z Asset Tracking
z Timing Reference
Preliminary Specification, Subject To Change Without Notice
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