SIMCom SIM7600EI LTE Cat-1 Cellular Module w/ GNSS

The SIM7600EI uses standard 3GPP AT commands for configuration. Begin by checking module readiness with 'AT', then set the APN with 'AT+CGDCONT'. To establish a TCP/IP connection, use 'AT+NETOPEN' followed by 'AT+TCPCONNECT' with the server IP and port. Data can be sent via 'AT+TCPSEND'. Always refer to the official SIMCom AT command manual for the complete syntax and specific parameters required for your network carrier.

To activate the GNSS receiver, send the AT command 'AT+CGNSPWR=1'. You can then request NMEA position data with 'AT+CGNSINF'. For better performance, ensure the module has a clear sky view via its external antenna connection. The GNSS can operate concurrently with cellular data. Configure the specific satellite systems (GPS/GLONASS/BeiDou/Galileo) using 'AT+CGNSCHS' to optimize for your region and improve Time-To-First-Fix (TTFF).

Provide a stable 3.8V DC power source capable of delivering peak currents of up to 2A during LTE transmission bursts. Use a low-ESR capacitor bank (e.g., 100uF + 10uF + 1uF) close to the module's VBAT pins to mitigate voltage droop. Implement proper LC filtering to suppress noise. The module includes internal regulators, so avoid supplying voltages outside the 3.4V to 4.2V range. A dedicated PMIC or high-current LDO is recommended for reliable operation.