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NEW! Version 4.2 NTR AIMS Scanning System
Software

NTR AIMS 4.2 Software Features Table [PDF][220kB]

NTR Systems Inc.

Acoustic Intensity Measurement
System (AIMS)

AIMS is a precision scanning system mounted on a tank that
allows measuring and mapping of acoustic fields in liquids. It is
the heart of any ultrasound measurement system, suitable for medical
imaging, pulsed and CW Doppler, theraputic devices and industrial
ultrasound between 0.25 and 60 MHz(*).

(*) Note: System may be applicable for some measurements
outside this range - consult Onda about your application.

Tank Sizes:

ASTS01:Inside dim: 0.73m X 0.36m X 0.44m
(29" x 14" x
17" tall)

ASTS03:iInsideDim: 0.89m X 0.51m X 0.58m
(35" x 20" x
23" tall)

Data Sheet
[PDF][358kB]

Applications

Engineering/Product Development: Evaluate prototype
transducers and excitation systems from measurements such as

Beam Dimensions

Focal Zone Location and Size

Pulse Amplitude, Spectrum, Center Frequency and Bandwidth

Pitch-Catch or Pulse Echo Measurement Modes

Government Compliance Testing: Gather data needed for
diagnostic device compliance submittals. Measure, calculate
and plot

Pulse waveform and pulse intensity integral plots

Intensity: pulse average(Isppa), temporal peak(Isptp),
temporal average(Ispta), pulse duration

Mechanical Index

In-water and derated intensity values

Pressure: positive and negative peak values

Acoustic power by planar integration

Beam dimensions (1 and 2 dimensions)

Center frequency and bandwidth

Therapeutic
devices: Compute

Effective Radiated Area (ERA)

Beam Non-Uniformity Ratio (BNR)

Production Testing

With data acquisition typically at 2 points per second,
production line measurements are one common application for this
system. Built-in scripting allows automation of repetitive
measurement tasks, pass/fail checks, and message-based control of
programs written by the user.

AIMS Capabilities

Precise 3-axis scan, repeatable within 12µm and absolute
accuracy of 25µm over 30 cm.

Travel: 610mm x 360mm x 380mm vertical (AST01); 800mm x 510mm
x 510mm vertical (AST03).

Digitized and stored waveforms, 1- and 2-dimensional spatial
scans. The software gathers, displays and stores the data.

Automatic computation of most relevant acoustic parameters
(see above).

Computer-controlled adjustment of either the hydrophone or the
transmitting transducer for beam alignment using the optional two
axes Angular
Positioner.

Frequency scans, where the response is measured as a signal
generator is stepped in frequency, is done with minimal additional
hardware. This is valuable in transducer evaluation and hydrophone
calibrations.

All measurement and reporting features can be verified by
using standard data files (provided) and then comparing the
resulting outputs with the expected results. While not required as
the executable software has been thoroughly validated at the
factory, verification is helpful because:

It builds confidence by showing the operator typical,
expected results.

It verifies system functionality for users who wish to
modify the source code.

The AIMS basic package

Acrylic
tank with water circulation hookups

Structural Frame with 3-axes positioner

Hydrophone
holder assemblies

Transducer
holder assemblies

Stepper
Drive Electronics for 3 axes

PCIDIO24
Interface Card

Stepper drive cables for 3 axes

Spare
parts and toolkit

USB-to-GPIB adaptor with cable

AIMS Software Executable - featuring external control

AIMS
4.2 Software Data Sheet [PDF][470kB]

AIMS 4.2
Software Features Table [PDF][219kB]

Options

Angular positioner (includes upgrade from 3 to 6-axes
controller and cable)

On-site installation and training (available in most
locations)

Water
conditioning system for degassing, filtering and temperature
control

Other required components
System Controller

A PC compatible computer running Windows 2000 Pro or XP is
needed, with one empty PCI slots.

Onda offers a PC with all software and hardware installed.

Waveform Digitizer

A digitizing oscilloscope is a necessary component. Many
models are compatible with the AIMS software.

Onda offers the Agilent DSO6012A Oscilloscope.

Hydrophone

Onda offers a complete line of hydrophones for acoustic
measurements.

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592 Weddell
Drive, Suite 7, Sunnyvale, CA 94089, Tel: (408) 745-0383, Fax: (408)
745-0956
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Reserved.