[Communication interface]：UART
[Operating voltage]：1.8-3.6V
[Positioning system]：BDS/GPS/GLONASS/Galileo/QZSS/SBAS
[Communication protocol]： NMEA0183V4.1 and previous versions
[Product size]：12.2*16.0*3.1mm
[Introduction]：EWM108-GN05S is a high-performance dual-frequency GNSS positioning module equipped with the HD8040D chip solution of Huada Beidou. This GNSS satellite positioning module supports the new generation of Beidou-3 signal system and all global civil navigation satellite systems including BDS, GPS, GLONASS, Galileo, SBAS, QZSS, etc. It provides high-precision, high-sensitivity and low-power solutions for GNSS navigation applications, and can customize SPI, USB, CAN and I2C interface outputs.
| Main parameters | performance | Remark | ||
| Minimum value | Typical values | Maximum value | ||
| Operating voltage (V) | 1.8 | 3.3 | 3.6 | More than 3.6V may burn the module |
| Communication level (V) | 3.3 | Use 5V TTL with risk of burning | ||
| Working temperature (℃) | -40 | - | 85 | Industrial design |
| humidity | 5% | - | -95%RH | No dew |
| Main parameters | describe | Remark |
| Baud rate (bps) | 1200~460800 | Default 115200bps |
| Data bits | 8bit | - |
| Stop position | 1 | - |
| Communication interface | UART | - |
| Packaging method | SMD type | - |
| EWM108-GN05 Size | 9.7*10.5*3.1mm | ±0.2mm |
| EWM108-GN05S Size | 12.2*16.0*3.1mm | |
| Antenna interface | Stamp hole | - |
| Output format | NMEA0183 V4.0/4.1 and previous versions RTCM 2.3/2.4/3.0/3.2 Cynosure GNSS receiver protocol | - |
| Positioning update rate | 1Hz | Maximum positioning update frequency can reach 10Hz |
| Supported positioning system | BDS/GPS/GLONASS/Galileo/QZSS/SBAS | GPS/QZSS: L1C/A, L5C BDS: B1I, B2A GLONASS: L1 Galileo: E1, E5a SBAS: L1 |
| EWM108-GN05 product weight | 0.5 | ±0.1g |
| EWM108-GN05S product weight | 0.9 |
| Category | Indicators | Typical values | unit |
| Positioning time (Test condition 1) |
Cold start | ≤28 | s |
| Hot start | ≤1 | s | |
| Sensitivity (Test condition 2) |
Cold start | -148 | dBm |
| Hot start | -155 | dBm | |
| Recapture | -158 | dBm | |
| track | -162 | dBm | |
| Accuracy (Test condition 3) |
Horizontal positioning accuracy | ＜1 | m |
| Speed positioning accuracy | ＜0.1 | m/s | |
| Timing accuracy | 25 | ns | |
| Power consumption (Test condition 4) |
EWM108-GN05 Capture Current | 47.3 | and |
| EWM108-GN05S Capture Current | |||
| EWM108-GN05 Tracking Current | 47.8 | and | |
| EWM108-GN05S Tracking Current | 47.2 | ||
| EWM108-GN05 Sleep Current | 14 | do | |
| EWM108-GN05S Sleep Current |
Note: The above results are GPS/Beidou dual-mode working mode.
[Testing Condition 1]: The number of received satellites is greater than 6, the signal intensity of all satellites is -130dBm, the average value is taken 10 times, and the positioning error is less than 10 meters.
[Test Condition 2]: The external LNA noise factor is 0.8, the number of received satellites is greater than 6, and the received signal strength value under locked within five minutes or without losing the locking condition.
[Test Condition 3]: Open without occlusion environment, start the test for 24 hours continuously, 50%CEP.
[Test Condition 4]: The number of received satellites is greater than 6, and the signal strength of all satellites is -130dBm.
