Inertial Measurement Unit (IMU)

CASTOR IMU 1100

Miniature Tactical 6DOF IMU with RS422 Interface

IP65MIL-STD-883F
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Castor IMU 1100
Castor GYR 1200
Castor IMU 1640
CSTR-IMU1100
0.0°/hrGyro Bias Instability
< 0.0 WPower Consumption
0 HzUpdate Rate
0 gShock Survival

Overview

The Castor series CSTR-IMU1100 is a high-end tactical class inertial measurement unit consisting of high-performance tri-axial accelerometer, tri-axial gyroscope, and tri-axial inclinometer sensors based on the latest MEMS technology, delivering control-grade inertial measurement data over an RS422 interface.

Its rugged and modular design, with output available over an RS422 interface, makes the IMU 1100 suitable for integration with control computers and other application hardware in guidance, navigation, and control systems, robotics and gimbal control, unmanned ground vehicles, and flight control systems.

Design Highlights

High-end Tactical Gyro Performance
Digital Software Filtering
Fully Calibrated
High Shock Survival
Communication
High Update Rate

How Castor IMU 1100 Processes Sensor Data

Raw accelerometer, gyroscope, and inclinometer signals are calibrated, temperature-compensated, and digitally filtered in real time before being delivered as control-grade inertial data over RS422.

Everything Built for Tactical-Grade Reliability

Shared engineering DNA across the Castor family — factory calibration, digital filtering, and rugged MIL-qualified construction.

High-end Tactical Gyro Performance

Excellent 0.7 deg/hr (typically) in-run bias instability, thermal compensation, and good short-term turn-on to turn-on repeatability.

Digital Software Filtering

IMU1100 features configurable filters with programmable taps optimizing the IMU for best performance.

Fully Calibrated

Factory calibrated for misalignment, offsets, and scale factor errors and temperature compensated.

High Shock Survival

IMU1100 is designed for shock survival up to 1500g making it suitable for high dynamics applications.

Communication

RS422 Interface, external trigger, diagnostics, and data ready options for integrated communication with user controller.

High Update Rate

Offers update rates of up to 2000Hz and configurable bandwidth as per customer application requirements.

Operating Voltage

Low supply voltage requirement making it possible to power up the IMU with low voltage battery systems.

Low Noise Sensors

Low noise and highly stable accelerometer and gyroscope sensors for high performance sensor data.

Operating Environment

Wide operating temperature range and temperature compensation of sensors for useful performance across operating range.

Technical Specifications

Castor IMU 1100 · CSTR-IMU1100 · Datasheet v 1.5

Range

±10 g

Bias Instability

0.020 mg (typ.) — 0.016 to 0.024 mg (At 25°C)

Velocity Random Walk (VRW)

0.018 m/s/√hr (typ.) — 0.018 to 0.028 (262 Hz LPF, at 25°C)

Bias Repeatability

±1.5 mg

Bandwidth

262 Hz, −3dB

Noise Density

0.0001 m/s² / √Hz

Resolution

24 bits

Where Castor IMU 1100 Delivers

Field-proven precision across guidance, navigation, and control platforms.

Guidance, Navigation and Control
Guidance, Navigation and Control
Drone Navigation and Control
Drone Navigation and Control

Compare the Castor Family

IMU 1100, GYR 1200, and IMU 1640 — every spec, side by side, no need to switch tabs.

Sensor Suite
Sensors
Accelerometer, Gyroscope, Inclinometer
Gyroscope only
Accelerometer, Gyroscope
Gyro Bias Instability
GYR 1200's single-axis-family design delivers the lowest gyro bias instability in the range
0.7°/hr (typ.)
Best
0.6°/hr (typ.)
1°/hr (typ.)
Accelerometer Bias Instability
0.02 mg (typ.)
—
0.019 mg (typ.)
Update Rate
Up to 2000 Hz
Up to 2000 Hz
Best
Up to 4250 Hz
Communication & Interface
Interface
RS422
RS422
SPI (15 Mbps)
Data Format
Binary
Binary
Binary
Mounting
Standalone module
Standalone module
OEM PCB-mount (board-to-board connector)
Electrical & Power
Input Voltage
4.5 to 5.5 V DC
4.5 to 5.5 V DC
3 to 3.6 V DC
Power Consumption
< 1.3 W
1.2 W
Best
< 1 W
Mechanical & Environmental
Dimensions
38.6 × 44.8 × 21.5 mm
37.6 × 43.8 × 19 mm
47 × 44 × 14 mm
Weight
72 ± 3 g
60 ± 4 g
Best
57 ± 3 g
Mechanical Shock
All three qualified per MIL-STD-883F, Method 2002.4, Test Condition B
1500 g / 0.5 ms half-sine
1500 g / 0.5 ms half-sine
1500 g / 0.5 ms half-sine
Operating Temperature
−40°C to +85°C
−40°C to +85°C
−40°C to +71°C
Ingress Protection
IP65
IP65
IP65
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Documents & Resources

Documentation

Castor Family

3 Datasheets

Castor IMU 1100 — Datasheet

CSTR-IMU1100 · Product Code: 26008

Download PDF

Castor GYR 1200 — Datasheet

CSTR-GYR1200 · Product Code: 26012

Download PDF

Castor IMU 1640 — Datasheet

CSTR-IMU1640 · Product Code: 26002

Download PDF

Frequently
Asked
Questions

Common questions about the Castor IMU 1100.

What is the interface for CSTR-IMU1100?
CSTR-IMU1100 can be interfaced on RS422.
What dynamics is CSTR-IMU1100 suitable for?
CSTR-IMU1100 has a dynamic measurement range of ±480 °/s and up to ±10 g.
What sensors are integrated in the IMU?
It combines a tri-axial accelerometer, tri-axial gyroscope, and tri-axial inclinometer.
What is the gyro bias instability of Castor IMU 1100?
It offers a typical bias instability of approximately 0.7°/hr.