Owner's manual

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
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
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
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