Difference between revisions of "GEM1111"

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! Parameters !! Specification  
! Parameters !! Specification  
|-
|-
| GNSS tracking channels || 72 channels GPS/QZSS: L1C/A  Galileo: E1 GLONASS: L1OF
| GNSS tracking channels || 72 channels, GPS/QZSS: L1C/A  Galileo: E1 GLONASS: L1
|-
|-
| Updating rate || 1 Hz (Default), up to 5 Hz  
| Updating rate || 1 Hz (Default), up to 5 Hz  
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| Time accuracy || 1PPS 20ns  
| Time accuracy || 1PPS 20ns  
|-
|-
| Time to First Fix(TTFF) || Hot start 1S
| Time to First Fix(TTFF) || Hot start 1S<br>Cold star 28S
|-
|-
| Cold start || -149 dBm  
| Sensitivity || Cold start -149 dBm <br> Reacquisition -159dBm<br> Tracking -163dBm
|-
| Reacquisition || -159 dBm
|-
| Tracking || -163 dBm
|-
|-
| Power supply VDD || 2.0-3.63 V, Typical 3.3 V
| Power supply VDD || 2.0-3.63 V, Typical 3.3 V
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| Standby mode || 10uA
| Standby mode || 10uA
|-
|-
| Serial Interface || UART Default: 9600 bps  
| Serial Interface || UART Default: 115200 bps  
|-
|-
| Protocol || NMEA 0183 Protocol Ver.3.01/4.00 (Default)/4.10   
| Protocol || NMEA 0183 Protocol Ver.3.01/4.00 (Default)/4.10   

Revision as of 17:25, 13 September 2023

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.

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 VDD 2.0-3.63 V, Typical 3.3 V
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