The NV-MC311 digital compass module uses a magnetoresistive sensor and a two‑axis tilt sensor to deliver heading information. It can operate accurately even when tilted up to 70°, and includes an automatic calibration routine to compensate for magnetic interference.
The manual lists the module's physical dimensions, electrical characteristics, performance specifications, and recommended operating conditions, as well as typical application areas such as aviation, marine navigation, radar, antenna installation, and vehicle detection. This manual is written in Chinese.
| Size (L×W×H) | 25.4 mm x 36.8 mm x 1.6 mm |
|---|---|
| Dynamic measurement range | +1.0 Gauss max |
| Resolution | 1 mGauss |
| Heading accuracy (<60° attitude) | <3° RMS |
| Pitch and roll accuracy (>60° attitude) | <2° RMS |
| Input voltage | 5.0 VDC |
| Operating current | 75 mA @ 5 VDC |
| Communication port | RS232 |
| Baud rate | 1200~38400 bps |
| Update frequency | 20 Hz |
| Operating temperature | -40°C~+80°C |
| Storage temperature | -45°C~+100°C |
The module measures 25.4 mm × 36.8 mm × 1.6 mm (L × W × H).
It operates from a 5.0 VDC supply and draws up to 75 mA at that voltage.
The module communicates via an RS232 serial port with a baud rate of 1200 to 38400 bps.
It can operate in magnetic fields up to +1 Gauss (100 µT).