2D Heading, Pitch and Roll Measurement

Temperature and Depth Measurement

www.roperresources.com

Roper Resources LtdCdn Sales: (250) 361-9115

US Sales: (805) 798-0277Facsimile: (250) 361-9115

Email: chris@roperresources.comWeb: www.roperresources.com

Roper Resources Ltd984 St. Patrick StreetVictoria, British Columbia V8S 4X5 Canada Cdn Sales: (250) 361-9115US Sales: (805) 798-0277 Facsimile: (250) 361-9115 Email: chris@roperresources.comWeb: www.roperresources.com

Compass Measurement

Compass Type: Tri-axial Magnetoresistive Magnetometer

Range: 0º - 360º Magnetic Heading

Resolution: 0.1º

Accuracy: 1º RMS Level

3º RMS 0º to 30º Tilt

4º RMS 31º to 60º Tilt

Inclinometer Measurement

Inclinometer Type: Bi-axial MEMS Accelerometer

Range: ±60º from Horizontal

Resolution: 0.1º

Accuracy: ±0.5º from 0º to 30º Tilt

±1º from 31º to 60º Tilt

Optional Pressure Measurement

Pressure Sensor Type: Absolute Pressure Transducer

Available Ranges: 10, 20, 50, 100, 200, 500, 1000, 2000 m

(1, 2, 5, 10, 20, 50, 100, 200 bar)

Resolution: 0.1 meters

Accuracy: ±0.1% Full Scale Output Typical

Optional Temperature Measurement

Temperature Sensor Type: 1000Ω Platinum 385 RTD

Range: -40º Celsius to 85º Celsius Calibrated

Resolution: 0.1º Celsius

Data Acquisition Sub-System

Microcontroller: 22 MHz SOC Intel 8052 Core MCU

Analog to Digital Converter: 8-Channel 24-Bit Σ-∆ ADC

Other Features: In-situ firmware updating, user-

controllable baud rate, transmission

frequency, ADC parameters

Power Management Sub-System

Voltage Input: 12-24 VDC Unregulated

Current: 170mA

Board Voltage: 3.3 / 5 VDC Regulated

Safety Features: 35V Over-voltage Protection

40A Over-current Protection

Short Protection

Communications Sub-System

Communications Protocol: NMEA 0183 Compliant

Communications Method: 2-Wire Half-Duplex Bi-directional RS-485

RS-232C Serial via Surface Control Box

Communications Distance: 2000m on compliant cable

Safety Features: Optoisolation of communication lines

Environmental Conditions

Storage Temperature: -40º to 85º Celsius

Operational Temperature: -40º to 85º Celsius

Physical Characteristics

Pressure Case Dimensions: 1⅞”x1⅞”x4¾” (48mm x 48mm x 121mm)

The AIM series of underwater instruments provides a reliable system for measuring

the real-time tri-axial orientation of any submerged platform or device. These instruments and their predecessors have logged an impressive performance record in

many diverse applications, from absolute aiming of sonar transducers to monitoring of towed body attitude. The basic AIM model measures compass heading, pitch, and

roll; optional sensors include hydrostatic pressure and temperature. The AIM system includes spare data acquisition channels to allow other parameters to be acquired

from external sensors using many different analog and digital protocols. These additional input features are available as custom factory options and are specified

and quotes on a per case basis.

The orientation measurement subsystem consists of a tri-axial magnetometer coupled with a biaxial accelerometer. These solid-state components are very

resistant to vibration induced by turbulent water or nearby electromechanical systems, eliminating the drawbacks of gimballed flux-gate compasses and fluid-filled

ampoules. Data from the sensors are acquired and transmitted in the industry-standard NMEA 0183 format. The RS-485 compliant communications features a

differential line design that allows transmission over long cables with excellent noise immunity. Data integrity is ensured by checksum validation, and the data protocol

includes error flags to identify conditions such as out-of-range measurements, excessive magnetic field distortion or internal malfunctions.

The AIM units are enclosed in a compact titanium pressure case rated to over 2,000 meters depth, with a four-way mountable

flat plate that provides a horizontal and vertical plane reference. The form factor is the same for all models, the only external differences being the addition of a sensor port and debris shield on one end of the case.

Included with each unit is front-end software running on either a Microsoft Windows™ computer or on a Palm™ OS handheld, providing intuitive and readily understood graphical and character-based interfaces and built-in histogram and data logging.