EWD108-GN03(485) BDS/GPS/GLONASS Multi-mode GNSS positioning module Standard ModBus RTU protocol Adopt guide rail installation
[Communication interface]：RS485
[Working voltage]：DC 5~24V
[Positioning system]：BDS/GPS/GLONASS
[Communication protocol]：Modbus RTU
[Product size]：103*28*28.5mm
[Introduction]：EWD108-GN03(485) multi-mode GNSS positioning module is a positioning terminal that supports multiple positioning systems (BDS/GPS/GLONASS positioning system). The device outputs positioning information through the Modbus RTU protocol, supports outputting RMC-ASCII strings that comply with the NMEA0183 protocol and storing them in separate registers (longitude, longitude direction, latitude, latitude direction, etc.). The serial port baud rate can reach up to 115200bps, and can be easily modified through the Modbus RTU protocol, which is convenient and fast.
| Serial number | Project | Specification |
| 1 | Power supply voltage | 5V~24V DC |
| 2 | Communication interface | RS485 |
| 3 | Baud rate range | 1200-115200bps |
| 4 | Communication protocol | Modbus RTU |
| 5 | Supported positioning system | BDS/GPS/GLONASS |
| 6 | Working frequency band | BDS B1、GPS L1、GLONASS L1 |
| 7 | Positioning update rate | 1Hz~10Hz |
| 8 | User Configuration | Modbus RTU to modify the register, restart takes effect |
| 9 | Antenna interface | SMA (Official Threaded Inner Hole) |
| 10 | Hardware interface | 4Pin 3.81mm Phoenix Terminal |
| 11 | Size | 103×28×28.5mm（L×W×H） |
| 12 | Average weight | 32±5g |
| 13 | Operating temperature | -40 ~ +85℃, industrial grade |
| 14 | Working humidity | 10% ~ 90%, relative humidity, no condensation |
| Category | Indicators | Typical values | unit |
| Positioning time (Test condition 1) |
Cold start | ≤32 | S |
| Hot start | ≤1 | S | |
| Recapture | ≤1 | S | |
| Sensitivity (Test condition 2) |
Cold start | -148 | dBm |
| Hot start | -156 | dBm | |
| Recapture | -160 | dBm | |
| track | -162 | dBm | |
| Accuracy (Test condition 3) |
Horizontal positioning accuracy | ＜2.5 | m |
| Speed positioning accuracy | ＜0.1 | m/s | |
| Timing accuracy | 30 | ns | |
| Power consumption (Test condition 4) |
Capture current | 30 | and |
| Tracking current | 20 | and | |
| Operating temperature | - | -35℃-85℃ | - |
| Storage temperature | - | -55℃-100℃ | - |
| humidity | - | 5%-95%RH (no condensation) | - |
[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 after 10 tests, and the positioning error is 10 meters.
[Test Condition 2]: The external LNA noise figure is 0.8, the number of received satellites is greater than 6, and the received signal strength value under locked or locked conditions is locked within five minutes.
[Test Condition 3]: Open and unobstructed environment, boot up for 24 consecutive hours, 50%CEP.
[Test Condition 4]: The number of received satellites is greater than 6, and the signal strength of all satellites is -130dBm.
