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Revolution AVThe Revolution™ AV (TNT4000) is a strap-down electronic compass designed specifically for commercial, industrial and military users requiring high accuracy, repeatability, and low power consumption in dynamic environments.  The Revolution AV is the latest addition to True North’s family of Revolution electronic compasses that have an unparalleled reputation for quality and performance.

An enhanced version of our Revolution GS, the AV includes a full suite of precision, 3-axis, MEMS rotation rate, acceleration, and magnetic sensors and a dual-axis electrolytic tilt sensor (for the ultimate in near-level accuracy).  All 11 sensor measurements are calibrated over a -40° to 105°C temperature range and aligned in three dimensions.  In addition to azimuth output, all raw and calibrated measurements are available at up to 27.5 readings per second.

The AV’s sensor suite consists of the following:

  • 3-axis angular rate gyros
  • 3-axis accelerometer
  • 3-axis magnetometer
  • 2-axis liquid eTilt sensor

The recommended applications for the AV are manned and unmanned aerial and underwater vehicles, but it can also be appropriate for robotics, weather buoys, antenna positioning, platform stabilization, excavation machinery, and irrigation equipment.  For cost sensitive applications, the rate gyros and eTilt are optional sensors that can be eliminated if not needed.

Product Brochure (PDF)

Revolution AV Brochure (PDF: 97K / 3 pages)

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Features

  • Static Accuracy
    • Azimuth within 0.5° typical (0.1°
      resolution)
    • Pitch and roll within 0.2°
  • Dynamic Performance
    • Gyro gimbal equations performed in
      firmware
    • Azimuth within 3° typ, rates < 150°/sec
    • Pitch and roll within 1° typical for rates
      < 150°/sec
  • Wide Operating Range
    • Ambient temperature -40° to 105°C (-40°
      to 220°F)
    • ±300°/sec angular rate
    • Total magnetic field (earth + hard-iron) to
      ±1.5 Gauss
    • ±80° dip angle range
    • Total acceleration field to 1.5g (gravity =
      1g)
    • ±90° pitch & ±180° roll range using accels
  • Fast Response
    • Up to 27.5 calibrated measurements per
      second
    • Wake from standby in 50 msec
  • Single Supply Operation
    • 5 to 45V unregulated DC
    • Thermal overload and reverse polarity protection
  • Low Power
    • 40 mA operating
    • 10 mA sample
    • 5 mA standby
  • Wide Selection of ASCII or Binary Output data
    • Heading, pitch, and roll
    • Temperature, input voltage, and dip angle
    • Magnetometer X, Y, and Z
    • Total, horizontal, and vertical magnetic
      field strength
    • Raw and conditioned gyro data
  • Two independent serial channels
    • Full-duplex RS-232 for the external RJ12
    • Either RS-232 or full-duplex RS-485 for the internal connector
  • In-System Configuration and Test
    • Laptop can be connected while unit operates in situ
    • Perform hard and soft iron calibration
    • Monitor outputs and change user-definable setting

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