MicroStrain by HBK 3DM-CX7 Tactical Grade IMUs
MicroStrain by HBK 3DM-CX7 Tactical Grade Inertial Measurement Units (IMUs) deliver precision inertial performance in the same compact, embeddable OEM form factor trusted across the C-Series product line, redesigned for demanding high-vibration platforms. Built on 80+ years of HBK sensing heritage, every unit is individually calibrated across its full temperature range. It features the industry-proven MicroStrain auto-adaptive Extended Kalman Filter for real-time error rejection.
The 3DM-CX7-AHRS features an integrated three-axis magnetometer that enables absolute magnetic heading, providing a reliable orientation reference without dependence on external signals. The 3DM-CX7-AR provides a clean, robust altitude solution in environments where magnetometer-based heading is impractical. The 3DM-CX7-INS accepts external GNSS, body-frame velocity, and heading aiding inputs, and fuses inertial data with your navigation stack to maintain a robust position, velocity, and attitude solution even when satellite signals are degraded or unavailable.
The MicroStrain by HBK 3DM-CX7 builds on decades of inertial expertise and is uniquely suited for applications that experience high levels of shock and vibration, like UAVs and legged robotics. For platforms that demand a precision attitude the user can count on, the 3DM-CX7 delivers.
Features
- Up to 100x improved vibration and shock robustness, where the device maintains an attitude solution where others fail completely
- External clock synchronization with tighter synchronization with external sensors like LiDAR or cameras to improve state estimation
- Tactical-grade gyro provides improved position accuracy during dead reckoning
- Custom event trigger system simplifies configuration of context-based events and frees up CPU on the vehicle's main board
- Redundant multi-IMU architecture gives intelligent outlier rejection for reliable estimation in high-dynamic environments
- Adjustable sampling rates provide a faster response to vehicle dynamics
- Calibrating over the full temperature range ensures consistent and reliable performance over the entire temperature range
- Expanded accelerometer and gyroscope ranges provide accelerometer support up to ±32g and gyroscope support up to ±4,000°/s
Specifications
- Physical and electrical
- 8.3g weight
- 38mm x 24mm x 8.6mm size
- 324mw (typ.), 404mW (max.) power consumption
- 3.2VDC to 5.2VDC operating voltage range
- 3V (5V tolerant) GPIO voltage
- -40°C to 85°C operating temperature
- MTBF is 1,953,356 hours (Telecordia Method, GM/35C)
- Attitude and heading
- 0.25° roll, pitch (static)
- 0.5° roll, pitch (dynamic)
- 0.5° heading (static) (3DM-CX7-AHRS and 3DM-CX7-INS only)
- 2° heading (dynamic) (3DM-CX7-AHRS and 3DM-CX7-INS only)
- Interface
- Samtec FTS-105 (2x5) connector
- UART (TTL), USB communications interface
- 1Hz to 1000Hz output data rate (IMU and EKF)
- 4x GPIO I/O
- GPIO functions are general purpose, I/O, PPS, events, UART
- Protocols
- MIP (3DM-CX7-AHRS,3DM-CX7-AR)
- MIP, NMEA (3DM-CX7-INS)
IMU Performance
Related Tactical Grade IMUs
MicroStrain by HBK 3DM-CV7 Tactical Grade Ruggedised IMUs
These devices offer tactical-grade inertial performance in a small and light OEM package.