Vertical Reference ADS-C132-1AD (Single Axis)

Our newest ADS sensor is a fully functional vertical reference in a miniaturized package. Without sacrificing the accuracy Watson sensors are known for, this ADS occupies about one tenth the volume! This new ADS is ideal for space-limited leveling and stabilization applications where high precision is required.


  • Solid State, Strapdown System
  • High Accuracy
  • Low Cost, Low Power
  • Rugged, High Reliability
  • Analog and RS-232 Digital Outputs
  • One Year Limited Warranty
  • Engineering Support

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Introducing the ADS-C132-1AD, Watson Industries newest sensor system! It is a much smaller, yet fully functional vertical reference system that can serve as a replacement for a Watson VRS in many applications.

The Watson Industries Single Axis Vertical Reference System is a solid-state gyro package that measures angular displacement and rate, especially where dynamic motion may interfere. Under these conditions, the effects of lateral accelerations severely limit the performance of an ordinary accelerometer or pendulous device.

The Watson Single Axis Vertical Reference achieves exceptional performance by integrating the output of a vibrating structure gyro to get an estimate of the attitude, which is then compared to accelerometers to find the error. The error is filtered over a long time constant and subtracted from the rate gyro output to correct biases in a closed loop error correction system. This process lets the gyro measure short-term attitude accuracy above the correction loop frequency while the accelerometer serves as the long-term reference.

The ADS can be a functional replacement for mechanical gyros, which are often more expensive, larger, heavier and less reliable than this solid-state sensor. It is especially suited for applications where there is limited bank and elevation such as ships, underwater vehicles, some land vehicles, and certain camera applications.



Range: Elevation ±180° (±50° †) Digital (Analog)
Resolution: 0.02° Binary mode (14 bit)
Analog Scale Factor: 5°/V † ±10V Output
Accuracy: Static ±0.5° (up to 75°)
* Accuracy: Dynamic 0.5%

Angular Rate

Range: Pitch ±100°/sec
Resolution: 0.025°/sec Binary mode (14 bit)
Analog Scale Factor: 10°/sec/V ±10V Output
Scale Factor Accuracy: 0.5%
Bias: Pitch < 0.3°/sec ±0.02°/sec Binary mode (14 bit)
Non-Linearity: < 0.2% Full scale range
Bandwidth: 50 Hz
Noise: < 0.06°/sec rms


Range: X, Z ±10g
Resolution: 4mg
Scale Factor Accuracy: 1%
Bias: < 10mg
Non-Linearity: 0.5% Full scale range
Bandwidth: 3 Hz


Temperature: Operating -40°C to 85°C
Temperature: Storage -55°C to 85°C
Vibration: Operating 5g rms 20 Hz to 2 KHz
Vibration: Survival 10g rms 20 Hz to 2 KHz
Shock: Survival 500g 1mS ½ sine wave


Frame Rate: 250 Hz Maximum
Startup Time: Data 5 sec
Startup Time: Fully operational 10 sec
Input Power: Positive 12 to 16VDC 0.4W
Input Power: Negative -12 to -16VDC 0.2W
Input Current: 30mA @ ±15VDC
Digital Output: RS-232
Analog Output: ±10VDC
Analog Output Impedance: 300 Ohm Per line


Axis Alignment: < 2°
Size: Including Mounting Flanges 1.2″W x 2.8″L x 1.35″H 3.0 x 7.1 x 3.4 (cm)
Weight: 2.1 oz 60 grams
Connection: Amp 4-794627-2 (12 pin) Mating Connector Incl.
* Actual accuracy can be calculated as the listed percentage multiplied by the change in value over the entire dynamic maneuver.
The Analog output range for Elevation is menu selectable. This also changes the analog scale factor for Elevation.
Specifications are subject to change without notice.
This product may be subject to export restrictions. Export Classification ECCN 7A994.



Title File Type
ADS-C132-1AD Spec Sheet pdf Download
ADS-C132-1AD Owner’s Manual pdf Download