DeLorme Earthmate LT-40 User manual

Earthmate®GPS LT-40
Technical Specifications
NMEA-compliant 16-channel receiver
WAAS-enabled (SBAS)
Low-power baseband and RF chip set (RF chip based on the ultra-low-power silicon-germanium BiCMOS process)
Cold start (avg.): 39 seconds
Warm start (avg.): 34 seconds
Hot start (avg.): < 3 seconds
Supply requirements: 90mA (through USB connector)
Maximum Velocity: 1000 knots
Advanced high-sensitivity algorithms for superior tracking in urban environments
Initial acquisition sensitivity down to -149dBm
Weak signal tracking down to -159dBm
Proprietary Kalman filter for enhanced position accuracy
Superior noise rejection for high EMI environments
STMicroelectronics new high-sensitivity chipset featuring DeLorme ConstantLock™ technologies for
outstanding time-to-first-fix and signal-retention performance
Environmental Characteristics
Operating temperature range -40° C to +85° C
Storage temperature range -55° C to +100° C