Vertical Reference Gyro ADS-C232-1A

This sensor is able to detect attitude along two axes, bank and elevation. If your application involves precisely leveling a platform or vehicle, a Watson dual-axis vertical reference is ideal.


  • All Solid State
  • High Reliability
  • Low Cost
  • One Year Warranty
  • Low Power
  • Engineering Support


The Watson vertical reference is a solid state gyro system used to measure angular displacement and rate, especially where dynamic motion may interfere. This is where the effects of lateral acceleration severely limit performance capability of an ordinary accelerometer or pendulous device. The Watson vertical reference provides exceptional performance in this area.

This vertical reference achieves improved performance by integrating a Watson angular rate gyro to get an estimate of attitude and then comparing it with the output from an inclinometer (pendulum) to find the error. The error is filtered over a long time constant and subtracted from the rate gyro output to correct biases as a closed loop error correction system. The Watson vertical reference can be a functional replacement for a mechanical vertical gyro. Mechanical gyros are often more expensive and cannot provide the reliability and life of this solid-state sensor.

The Watson vertical reference has been used to stabilize or control ships and submersibles, to instrument automobiles, to stabilize antennas and many other applications. This vertical reference is especially suited for applications where there is limited bank and elevation such as ships, underwater vehicles, land vehicles, and camera stabilization. This is because the vertical reference uses a linear coordinate system. To do any better, a full three axis system would be required. Consult the factory about your application.



Range: X Axis, Y Axis ±30°
Analog Scale Factor: 3°/V ±10V Output
Accuracy: Static ±0.3°
* Accuracy: Dynamic 2%

Angular Rate

Range: X Axis, Y Axis ±100°/sec
Resolution: 0.1°/sec
Analog Scale Factor: 10°/sec/V ±10V Output
Scale Factor Accuracy: 1% Constant temperature
Bias: X Axis, Y Axis < 1.5°/sec
Non-Linearity: < 0.05% Full scale range
Bandwidth: 50 Hz


Temperature: Operating -20°C to +50°C
Temperature: Storage -30°C to +60°C
Vibration: Operating 2.5g rms 20 Hz to 2 KHz
Vibration: Survival 10g rms 20 Hz to 2 KHz
Shock: Survival 500g 10mS ½ sine wave


Input Power: Positive 12 to 16VDC 0.9W
Input Power: Negative -12 to -16VDC 0.9W
Input Current: 60mA @ ±15VDC
Analog Output: ±10VDC
Analog Output Impedance: 1000 Ohm


Axis Alignment: < 2°
Size: Including Mounting Flanges 3.13″W x 4.5″L x 3.12″H 8 x 11.4 x 7.9 (cm)
Weight: 15oz (0.9 lb) 430 grams (0.4 Kg)
Connection: 9 pin male “D” subminiature
Life: > 50,000 Hrs MTBF
* Actual accuracy can be calculated as the listed percentage multiplied by the change in value over the entire dynamic maneuver.
Specifications are subject to change without notice.
This product may be subject to export restrictions. Please consult the factory.



Title File Type
ADS-C232-1A Spec Sheet pdf Download
ADS-C232-1A Owner’s Manual pdf Download