Larson Davis Data
Navigation And Analysis Software (DNA)
Analyzing noise and
vibration data can be difficult. Its not often easy to see the
patterns or recognize the nuances of complex data sets. Furthermore,
presenting data in a way that is meaningful can be challenging, yet
perhaps our most important task. DNA (Data, Navigation, and
Analysis) makes manoeuvring through extensive data a simple
operation and putting together meaningful reports has never been
easier.
If you'd like any further information then don't hesitate in giving us a call or dropping
an
e-mail.
Acoustic Intensity
superimposed on a drawing:
Automotive - Order
Tracking with a spectrograph:
Some of DNAs many features include:
Windows 95/XP
Setup and Control of Larson Davis Models 720, 812, 820, 824,
2900B & 3000+
Stream data
directly from screen to hard drive, including sound files
Read stored data files directly
from analyser or disc
Create report templates for easy
graphing and printing
Organise templates, graphics and
measurements for easy recall
Reports can integrate text,
graphics, pictures or embedded objects (OLE 2.0) such as MS
Word, MS Excel and .WAV files
Graph 1/1, 1/3, 1/12, 1/24
octave, FFT and zoom FFT, SLM parameters; statistical
distribution and more!
Cursor Synchronisation between
different types of graphics with drag and drop functionality for
use in a wide variety of applications
Research and
Development
Building Acoustics
Sound Power
Determination
Vibration
Measurements
Statistics
Pass-By
Sound Intensity
Simple Point and
Shoot
Transient Capture
Environmental
Aircraft Noise
Industrial Noise
General Surveys
Transport Noise
Community Noise
Events and Tone
Worker Safety
Work Place Surveys
Machinery Noise
One Software
Package for Unlimited Needs
DNA was developed to integrate and fully support all types of
measurements made with Larson Davis noise and vibration
instrumentation. It replaces the need for several different
software applications to achieve what you really want for
display, analysis, and reporting of all project measurement
data. DNA quickly produces high quality charts, reports, and
presentations.
Real-time Display Mode
DNA displays and controls measurement data on a PC in real-time,
while maintaining access to all of the instruments measurement
and analysis functions.
WYSIWYG
DNA is What You See Is What You Get software. You place, resize,
and manipulate graphical objects, images, graphs, text, and
other types of objects on a page. What you see displayed on the
screen remains unchanged on the printed report.
Instruments Supported
DNA software interfaces with the Larson Davis Models 812, 820,
824, 2900B, & 3200+ via RS-232 and RS-422. It provides
instrument setup and direct conversion and display of data
files.
Waterfall:
Building Acoustics
RT-60's:
Measurement Organization
DNA saves all measurement-related files as elements of a project
file. Project files can contain measurement data, page descriptions,
images, audio files, etc. All data are organized in a tree structure
(like Windows Explorer). In addition, DNA allows you to drag & drop
any object onto project reports.
Graphics
It is possible to perform any kind of graphic presentation with
dimensions, scaling, dotted lines, bar graphs, overlaying, linear
and log scales, EU, cursor synchronized among the graphics
displayed, etc. Any combination of graphs and objects (even an
entire document) can be saved as a template. In addition, you can
perform cumulative distribution versus time and for each frequency
band, percentile Ln versus time and frequency; frequency versus
time, speed, distance or rpm; order analysis, RT-60, etc.
Data Post-Processing
DNA calculates functions including all mathematical operations from
data blocks, spectra, multi-spectra, levels versus time, engine
revolution or speed, and more. Levels of selected spectral bands can
be modified or cancelled, both in frequency and in time domain, for
data matrix or multi-spectra. Several weighting curves are included
with the software.
Optional
Modules
DNA can be expanded to meet your measurement needs with the
following modules:
PC Direct Data
Store
Stores Data
Directly to the PC Hard Drive
Intended for
applications where the instrument memory is not sufficient, e.g.
environmental monitoring, pass-bys and long run-up
File Audio
Stores time
domain signal from the instrument to the PC sound card and then
to the Hard Drive
Sound file can be
attached to a graph or page
Creates .WAV
files
Order Tracking
Analysis
Order extraction
from autostore by-Tach
Graphics template
for order analysis
Spectrum vs RPM
or Speed for frequency or order
Building Acoustics
RT-60 with
backward Schroeder Integration
ISO R140 & ISO
717
ASTM E90-E336 &
ASTM E007
Acoustic Intensity
Support for ISO
9614
Contour Plotting
(planar only)
Overlay on DXF
Autocad file of the measurements surface
General
WYSIWYG display.
The working page is the same as the print out.
Support for; 720,
812, 820, 824, 2900B & 3000+
Data Input
Import data via
Floppy Disc, RS-232, RS-422 and Modem
Real-time control
of all measurement and analysis functions of the instrument
Automatic
identification of noise events
Easy management
of the various instrument setup parameters
Data files of
waveforms, statistics, frequency analysis in 1/1, 1/3, 1/12,
1/24 octave and FFT with any kind of spectral resolution,
crosspectra, module, phase, real and imaginary part, spectrum,
multispectra, harmonic orders, meteorological signals, voltage,
current etc
Measurement file
with icons (Measurement Organiser) with drag and drop functions
for quick selection
Graphics
Management of
graphics, numerical tables, comments, dynamic markers, digital
photos and video clips
Direct import of
image files as metafile WMF and EMF or bitmap as DIB or BMP
X, Y and Z axis
definable as linear or logarithmic with selectable values or
using auto scale
Single or
multiple cursors synchronised among the displayed graphs
Alignment of
graphics and objects
Post Processing
Cut & Paste
between sequences acquired in the time domain
Measurement
recalibration and level modification in frequency and time
domain
Spectrograms and
3D graphics (Waterfall)
Mathematical
functions, masks in time and frequency domain, automatic
identification of the events, tonal components etc
Creation of the
curve family as ISO NR, ISO 2633, Isophonics ISO 226 etc
Weighting Curves
Statistics on the
overall value and per frequency band, also in FFT
Other
OLE 2.0 (client)
with all Microsoft applications
Copy and Paste
through clipboard both for graphics and numerical tables
Undo
Email documents
On-line help
Print preview
with multiple pages of a document
Options
Pass-by Data
Calculation
Direct data
acquisition to a PC .WAV files of an event
DNA software and
functions apply only to Larson Davis products which support them
Head Office:
PC Environmental Ltd, Units 1&2 Claylands Road. Ind.Est.,
Claylands Road, Bishops Waltham, Southampton SO32 1BH UK
