U121D
The U121D is a FOG-based inertial measurement unit (IMU) combining three axes of MostaTech's smallest fiber optic gyroscopes with three axes of MEMS accelerometers. Weighing just 195g with a power consumption of only 1.5W, the IMU incorporates a fully-integrated three-channel ADC board with serial RS422 output, and an analogue version is available upon request.
The non-ITAR IMU is enclosed in a robust aluminium housing, and is ideal for marine vessels, USVs and ROVs, as well as for integration into higher order systems such as inertial navigation systems (INS).
| Dimensions (mm) | 63 x 56 x 40 |
| Weight (grams) | 195 |
| Power (W) | 1.5W |
| Gyro Input Range (°/s) | 400 |
| Gyro Bias RMS (°/h) | 3 |
| Gyro ARW (°/√h) | 0.05 |
| Acc. Range (g) | 10 |
| Acc. Bandwidth (Hz) | 250 |
| Acc. Bias Stability (mg) | 0.2 |
| Data rate (kHz) | 4 |
| Baud rate (kBd) | 921.6 |
| Vibration (g, RMS) | 6 |
| Shock Resistance (g) | 350 |
| Operating Temperature (°C) | -40 - +70 |
| Housing | Al alloy |
