The SVAN 979 is all digital, Class 1 Sound & Vibration level meter (SLM and
VLM) as well as a real time 1/1, 1/3 octave analyser. The instrument is designed
for general acoustic and vibration measurements, environmental monitoring,
occupational health and safety monitoring.
Three acoustic or vibration user configurable profiles allow parallel
measurements with independently defined frequency filters and RMS detector
time constants. Each profile provides a significant number of results (like Spl,
Leq, Sel, Lden, LEPd, Ltm3, LTeq, Peak, Max and Min as well as ten statistics,
two rolling Leq, expected Leq value, standard Leq deviation and noise criterium
and noise ratio indexes in case of sound measurements or RMS, Ovl, Peak,
P-P, MTVV in case of vibration measurements). Advanced time history logging
for each profile provides complete information about the measured signal using
the external SD card or USB Memory Stick and can be easily downloaded to any
PC using the USB interface and SvanPC++ software.
All required weighting filters: A, B, C, G, Z for sound measurements and HP1,
HP3, HP10, Vel1, Vel3, Vel10, VelMF, Dil1, Dil3, Dil10 and Wh for general
vibration measurements (like acceleration, velocity and displacement); are
available with this instrument.
Standard version of SVAN 979 is equipped with 1/1 and 1/3 octave real-time
analysis as well as FFT. In the sound level meter mode, the statistical analysis
in 1/1 or 1/3 octaves is also available. Frequency analysis is an essential tool for
sound & vibration engineers. Depending on an application it can be more or less
detailed. For advanced applications that require the narrow band frequency
analysis, SVAN 979 offers options of the 1/6 or 1/12 octave real-time analysis.
The frequency analysis is a critical tool in building acoustics measurements.
Depending on the application, frequency analysis can be done in 1/1 octave or
1/3 octave spectra. SVAN 979 records the time history of spectra with
milliseconds logging step. It enables one to calculate RT60 results as well as
sound insulation results. Additionally, SVAN 979 offers the functionality of a
signal generator which is capable of generating pink noise, white noise or a
selected sine wave. The signal generator works together with the RT 60 function
which is calculated in 1/1 or 1/3 octave bands.
SVAN 979 enables STIPA calculations in accordance with IEC 60268-16:2011.
Another feature of SVAN 979 is a time signal recording, which stands for a
recording of the raw signal samples with defined frequency up to 48 kHz.
Analysis of the raw signal is used whenever frequency analysis is not sufficient.
Postprocessing of wave files such as calculation of tonality is available in the
SvanPC++ software. Time signal is recorded in a wave format which means that
it can be played back in the PC software and used for noise source recognition
(audio recording).
A fast USB 1.1 interface (12 MHz) creates a real time link for the PC "front-end" application using the SVAN 979.
The USB Host functionality is also available. The USB Host controller installed in the instrument enables the
user to connect this meter to USB memory sticks, USB hard disks, USB printers etc. With the use of optional
interfaces (RS 232, Bluetooth
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1
or IrDA) the instrument can be remotely controlled from the PC or smartphone.
Measurement results can be downloaded to the PC using all the interfaces mentioned above.
Working as a part of SV 279 PRO monitoring station, equipped with 3G modem, SVAN 979 can transfer
measured data via Internet to PC with the use of SvanPC++_RC option or via SvanNET web service. The
instrument can be fully remotely controlled via these interfaces. The instrument has advanced alarms features,
that enables the user notification about exceeded threshold levels by SMS or mails.
The instrument is powered from four AA standard alkaline or rechargeable batteries (i.e. NiMH - separate
charger is required). Powering the instrument from an External DC power source or the USB interface is also
possible.
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