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Because of the
parallel usage of computing power from the DSPs and the PC, a
variety of functions from 2 to 8 measuring channels in 1 to 16
windows are simultaneously available for the user. SAMURAI offers
fantastic graphical display facilities during the measurement and in
post-processing.
Level values, third octaves and time signals are stored parallel to
measurement and analysis. SAMURAI contains many innovative
functions:
Integration of a sensor database for common sensor types
The multi-analysis function offers different types of pre-defi ned
windows for the simultaneous display of sound level meter, spectra,
history, sonogram, waterfall, auxiliary channels etc.
All properties of the display windows can be adjusted
individually.
All setups can be stored and re-loaded.
File access is supported by a browser.
The replay function allows replaying the measured data stored.
All statistical values can be calculated in broad and narrow
bands.
Measurement tasks can be defined to be performed in Easy Mode. The
Easy Mode user can only measure and store, so that operator errors
are almost excluded.
An automatic calibration, run before the start of the measurement,
checks if there are typical calibration signals on the channels and
then carries out a calibration.
SAMURAI contains novel trigger and marker functions.
Third-octave and FFT spectra can be displayed in the same window.
A window for the display of tonality is available in SAMURAI.
Spectra are displayed over the time axis or over r.p.m.
SAMURAI utilizes the sleep function of the computer: the
software switches the computer on at a defined time to perform a
measurement and afterwards automatically switches it off again.
The following measurements, analyses and additional functions can be
performed simultaneously. The measurement and the display of
measurement results are separate processes, so that not every
measured value needs to be displayed during the measurement.
Different modes allow various trigger and storage functions for
effective usage of the storage capacity:
MODE --> STORAGE
Standard: Final values for a period (no history)
Autostore: All data of the measurement period (complete time
history)
Event: Data at a pre-defined event
Block: Data in start / stop operation
Timed: Data at a certain point in time
Demo: No data storage
The following types of display windows are available as standard:
Sound level meter
Type 1 according to IEC 60561, 60804, 61672
Level with Fast, Slow, Impulse & Peak time weightings and A, C & Z
frequency weightings
Lmax, Lmin, Leq, Lpeak of all level values
LE, LAtm1/3/5, Ln
One measurement channel per window
Third-octave analyzer
Real-time third-octave filter according to IEC 1260 Type 0
Measurements from 0.1 Hz to 20 kHz
Momentary, maximum, minimum and Leq spectra simultaneously
Up to eight channels can be displayed in one window
Display as bar graph, bar contour or line
FFT analyzer
FFT analyzer with 101 to 25,601 lines
Frequency range selectable from 0
19.5 Hz up to 0
20 kHz
Momentary, maximum, minimum and Leq spectra simultaneously
Up to eight channels can be displayed in one window
Display as bar graph, bar contour or line
Time signal
Display of time signals with changeable time basis
Up to eight channels can be displayed in one window
Sonogram
Color display of third-octave and FFT spectra over time
Color display of third-octave and FFT spectra over r.p.m.
Waterfall plot
3D display of third-octave or FFT spectra over time
Geometry settings can be edited
Reverberation time measurement
Measurement of the reverberation time in 1/3 octaves
Excitation: switch-off noise, impulse or sine-sweep (with
multi-generator option)
the 4 signal outputs may be used as noise generators (white and
pink noise)
The replay mode of SAMURAI allows measurements to be redisplayed.
Data export to the following formats is already integrated:
Noise & Vibration Works
si++ Workbench
MS Excel
ASCII
Universal File Format (UFF)
SAMURAI is perfectly complemented by the Noise & Vibration Works for
Windows software, which offers comprehensive post-processing
facilities.
It allows the analysis of level, time and spectra values, graphical
post-processing and convenient report generation. SAMURAI is also
used for monitoring noise and vibration with NoiseLOG and Swing,
whereby it can be controlled either locally or over a network.
The automatic storage of the measured values on exchangeable hard
disks is supported. Direct integration of a weather station with a
serial interface into SAMURAI is possible using a special display
window.
The following SAMURAI options are available:
HVMA
The Human Vibration Multi Analyzer allows up to 3-channel
measurements according to all filter curves of ISO 8041. The vectors
resulting from x, y, z for segmental or whole body vibrations with
comfort and health weighting are displayed simultaneously in one
window.
Automation
Automatic comparison of a frequency analysis with reference spectra
and their management as well as automatic detection by the device
which displays a message, switches an output signal or starts an
application (e. g. to send an email).
Vibration Meter
This option allows the double integration of the time signal as well
as third order high-pass and low-pass filtering with
switchselectable edge frequencies. The option complies with ISO
2954, ISO 7919 and DIN ISO 10816 (Vibration Meter).
Fractional octaves
This option provides 1/1, 1/3, 1/6, 1/12 or 1/24 octaves up to 40
kHz in real time (1/3 octaves comply with class 0, IEC 61260).
NoiseCam
A USB webcam allows you to store not only sound signals, but also
videos with a freely adjustable compression rate. Two main values of
a SLM or HVMA channel and the time display may be blended-in. The
video export to a multimedia standard format grants clear
measurement documentation.
Multi-Generator
In addition to the noise generator this option provides the signal
types: sine, rectangle, triangle, impulse, multi-sine, sine-sweep (lin
and log) and pseudo-noise. The output of freely defined signals or
stored values as *.wav files simultaneously to the data acquisition
and the FFT analysis is also possible.
Transfer FRF
The transfer function of a structure is obtained using an impulse
hammer or a triax accelerometer. The data storage corresponds with
the measurements geometry. The data export to MEscope is possible.
Pass-By Noise
Innovative measuring method to acquire noise data of a passing by
vehicle according to ISO 362. A highly precise GPS system measures
the vehicles velocity as well as its drive-in and driveout
position. The driver controls the measuring operation and receives
all information on a small TFT display at the windscreen. Customized
solutions are possible on request.
TCP/IP Interface
This option allows you to control SAMURAI including all features via
network and integrate it into a complex measuring system.
TCP/IP Client
Remote control of SAMURAI via network. Commands, status reports and
measured values are transmitted via WLAN or GSM and displayed as on
a Soundbook.
Building acoustics (SAMBA)
The whole acoustic testing of airborne noise and impact sound
insulation is organized according to ISO 717 and ISO 140. The
measurements are prepared (rooms, partitions, measuring tasks) and
implemented and the results are provided in printable form.
Order tracking
This option allows measurement and display of spectra versus order
of a basic frequency or RPM of a rotating machine.
Sound intensity *
Sound intensity measurements according to ISO 9614 part 1 and part 2
with sound mapping on digital photos.
Sound power measurement *
The sound power in 1/3 octaves and as a sum is measured in real time
or sequentially using various geometries and numbers of microphones.
It is possible to measure further operational parameters (e. g.
speed and power).
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