The Revolution AV+ (TNT4700-AV) is the top-line family member of four devices that combine IMU and magnetic compass operation with advanced vibration and sensor fault detection. It features 11 sensors aligned and calibrated to identical, orthogonal axes and compensated over a temperature range of ‑50°C to 110°C. There are two independent serial channels (RS232 or RS485) to transfer either compass or IMU data in industry-standard formats: a simple-to-decipher ASCII string for compass data (NMEA 0183*) and an efficient binary packet format for IMU data.
The sensor suite consists of 3D rate gyros, a 3D MEMS accelerometer, a 3D MEMS magnetometer, and a dual axis electrolytic tilt (eTilt) sensor. The GS+ family member eliminates the Z-axis gyro, XT+ has no gyros, and the NG+ has the same sensors as our legacy Revolution compass: 3D magnetometer and electrolytic sensor.
All family members are RoHS compliant, which requires an immersion silver (iAG) PCB finish. A protective conformal coating is applied to the finished assemblies to allow operation in challenging environments. Several non-magnetic enclosure options are available depending on the level of protection needed.
IMU/Compass operating mode can be changed on the fly. In Compass mode, easy-to-tune complementary filters blend accelerometer, gyro, and magnetometer data to produce accurate estimates of attitude in dynamic ambient conditions. Diagnostic measurements include magnetic dip angle and horizontal field strength that can be verified with online geomagnetic model data to ensure that interfering magnetic signals are correctly compensated.
Built in diagnostic and test features ensure that all sensors are operating properly. Power-up and/or soft-reset electrostatic tests can be selected to verify accelerometer and gyro operation at startup. Run-time monitoring of ambient temperature, sensor voltage levels, electrolytic sensor impedance, and magnetometer set-reset offsets provides a high degree of confidence in reported measurements.
True North offers a development kit that includes the compass, cable, and software. The Revolution AV+ is covered by a full one-year warranty for workmanship.
Product Brochure (PDF): Revolution AV+ Family Brochure
Features
- Electronic Compass and IMU operating modes
- 11 calibrated and aligned inertial sensors
- ±250°/sec range, vibration rejecting gyros
- ±2, ±4, ±8, ±16 G selectable accelerometer range
- ±2 Oersted magnetic sensors with adjustable gain
- ±40° dual-axis electrolytic (liquid) tilt sensor
- Ambient temperature and input voltage measurements
- -50° to 110 °C sensor temperature compensation range
- Sensor measurements aligned to identical, orthogonal axes
- Two independent serial output channels
- RS232 and RS485
- 2400, 4800, 9600, 19200, 38400, 57600, or 115200 baud
- RJ12 and 8-pin header connectors
- NMEA ASCII output format in Compass mode
- 46-byte binary packet output in IMU mode
- Single supply operation
- Unregulated 6 to 45Vdc input
- Reverse polarity protection
- Low operating current
- 40mA Run mode (continuous measurements)
- 10mA Sample mode (measurement on request)
- Comprehensive diagnostic measurements
- Power-up and software reset built-in electrostatic tests
- Accelerometer vibration outputs in IMU mode
- Sensor voltage and temperature operating tests
- Magnetometer offset and bridge voltage tests
- Electrolytic sensor impedance tests
- PC Revolution Test Software
- Windows XP through 11 compatible
- Both Compass and IMU mode support
- Change and verify settings
- Record selected data is CSV (Excel) format
- Communication, calibration, and settings logs
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