Gmm-r1 GPS Module

GlobalTop Gmm-r1 utilizes MediaTek ROM GPS Chipset –MT3337 achieving the industry’s highest level of sensitivity (-165dBm) and instant Time-to-First Fix (TTFF) with lowest power consumption in a small footprint package. Gmm-r1 supports various location and navigation applications including autonomous GPS, QZSS, SBAS, DGPS (RTCM) and AGPS. Gmm-r1 supports up to 210 PRN channels with 66 search channels and 22 simultaneous tracking channels.

The Gmm-r1 is excellent in low power consumption. It is suitable for power sensitive devices such as portable applications (15mA at tracking and 19mA at acquisition).

Feature

  • Support QZSS satellites (Japan)
  • MediaTek MT3337 Chipset, 22 tracking/ 66 acquisition-channel.
  • Dimension 9.7 x 10.0 x 2.1 mm; SMD
  • Ultra-high Sensitivity, -165dBm, TCXO Design
  • Indoor and outdoor multi-path detection and compensation
  • GPS Consumption current (@3.3V)
      Acquisition for GPS: 19mA Typical
     Tracking for GPS: 15mA Typical
  • E911, RoHS Compliance
  • CE,FCC Certification
  • DGPS (QZSS/WAAS/EGNOS/MASA/GAGAN*)
    *GAGAN will be supported.

Specification

Dimension 9.7 x 10 x 2.1 mm, SMD type
GNSS Solution MTK MT3337, 66 Channels
Frequency GPS L1, 1575.42MHz
Sensitivity
Acquisition -148 dBm
Tracking -165 dBm
Position Accuracy Without aid: 3.0 m (50% CEP)
DGPS (SBAS(WAAS,EGNOS,MSAS,GAGAN*)): 2.5 m (50% CEP)
TTFF (Time to First Fix) Cold Start: <35 Seconds (Typical)
Warm Start: <33 Seconds (Typical)
Hot Start: <1 Seconds (Typical)
Timing Accuracy (1PPS Output) ±10ns RMS
Protocol NMEA 0183, MTK Command
DGPS SBAS(default) [QZSS,WAAS, EGNOS, MSAS,GAGAN*]
AGPS Supported (Offline Mode & Host Aiding Mode)
Update Rate 1Hz (default), maximum 10Hz
Baud Rate 9600 bps (default),4800,38400,115200
Interface 2 UART
Power Supply VCC: 3.0 V to 4.3 V
VBACKUP: 2.0 V to 4.3 V
1V8_input 1 :1.62V to 1.89V
Current Consumption Acquisition: 19 mA
Tracking: 15 mA
Working Temperature -40 °C to +85 °C

 

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