GEM1111

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GEM1111 - 1616A00

GEM1111

GEM1111 is a high-performance L1 GNSS positioning module with antenna built-in, which is developed on the base of the state-of-the-art Allystar Cynosure III Lite architecture.
It supports global civil navigation systems, including GPS, BDS, GLONASS, Galileo, and QZSS. Featured with SAW and LNA, GEM1111 achieves high positioning accuracy and short TTFF, especially in a rough urban environment.
It supports antenna supervisor and auto-switching between the built-in antenna and the external antenna. With a compact body and high performance, GEM1111 is widely applied to tracking applications, like automotive, consumer, and industrial tracking.

Feature

  • Supports GPS, BDS, Galileo, GLONASS, and QZSS systems Built-in LNA & SAW for better sensitivity
  • Supports A-GNSS
  • Supports geo-fence function
  • Ultra-low power consumption around 13 mA in tracking mode
  • Supports antenna supervision
  • Supports auto-switching between the built-in antenna and the external antenna


Specifications

Parameters Specification
GNSS tracking channels 72 channels, GPS/QZSS: L1C/A Galileo: E1 GLONASS: L1
Updating rate 1 Hz (Default), up to 5 Hz
Position accuracy < 1.5 m CEP @ Open Sky
Velocity accuracy 0.1 m/s CEP
Time accuracy 1PPS 20ns
Time to First Fix(TTFF) Hot start 1S
Cold star 28S
Sensitivity Cold start -149 dBm
Reacquisition -159dBm
Tracking -163dBm
Power supply 2.0-3.63 V, Typical 3.3 V
Power consumption Acquisition 15mA @3.3V
Tracking 13mA @3.3V
Standby mode 10uA
Serial Interface UART Default: 115200 bps
Protocol NMEA 0183 Protocol Ver.3.01/4.00 (Default)/4.10
Operating temperature -40~+85℃
Storage temperature -40~+85℃
Weight 7.5g
Dimessions 16*16*6.9mm