This user manual describes the GlobalSat EM-411 GPS Receiver Engine Board, covering its features, electrical specifications, mechanical dimensions, and operating conditions. It includes detailed pin assignments and explains how to interface the board with external software.
The document also provides a full set of NMEA and proprietary command definitions, allowing users to configure the module, query data, and adjust navigation parameters. Example command formats and usage notes are given for common tasks such as setting the serial port, controlling output rates, and initializing position data. This manual is written in Chinese.
| Chipset | SiRF Star III |
|---|---|
| Frequency | L1 1575.42 MHz |
| Channels | 20 |
| Sensitivity | -159 dBm |
| Power input voltage | 4.5 V ~ 6.5 V DC |
| Power consumption | 60 mA |
| Dimensions | 30 mm × 30 mm × 10.5 mm |
| Operating temperature | -40 °C to +85 °C |
| Maximum altitude | 18,000 m |
| Maximum velocity | 515 m/s |
The module operates from a DC supply of 4.5 V to 6.5 V.
It can track up to 20 channels at the same time.
The receiver has a sensitivity of –159 dBm.
Standard NMEA messages GGA, GLL, GSA, GSV, RMC, and VTG can be queried or set for periodic output.