SVAN 953 USER MANUAL
1-1
1 INTRODUCTION
The SVAN 953 is digital, Type 2 sound level meter along with analyser meeting IEC 61672:2002
standard. The instrument is dedicated to general acoustic measurements, environmental noise
monitoring, occupational health and safety monitoring. Acoustic dose meter function is also available as
an option with the SV 25 dedicated microphone. The SVAN 953, using computational power of its digital
signal processor, can perform real time statistical calculations.
Three acoustic profiles allow parallel measurements with independently defined filters and RMS
detector time constants (e.g. concurrent Impulse, Fast and Slow measurements are possible).
All required weighting filters (e.g.: Z, A, C) are available with this instrument.
Fast USB 1.1 interface (with 12 MHz clock) creates real time link for the application
of the SVAN 953 as a PC front-end. The measurement results can be stored in large 16 MB, non-volatile
memory or external USB Memory Stick (option) and easy downloaded to any PC using USB 1.1 and
SvanPC software. The usage of the RS 232 interface (option) or IrDA interface (option) is also possible.
The SVAN 953 can be used in hard environmental conditions over the whole work day thanks to
replaceable four AA standard or AA rechargeable (i.e. NiMH, the separate charger is required) batteries
and robust, lightweight construction.
The main features of SVAN 953 instrument are as follows:
SVAN 953 as Sound Level Meter
• noise measurements (SPL, LEQ, SEL, L
den
, Ltm3, Ltm5, L
Peak
, L
Max
, L
Min
, L
EPd
and statistics)
with Type 2 accuracy in the frequency range 20 Hz ÷ 20 kHz and with 48 kHz sampling rate
• parallel IMPULSE, FAST and SLOW detectors for the measurements with A, C or Z filters
• one measurement range 26 dB
A RMS
÷ 141 dB
A PEAK
(5 dB margin from noise level) in the SLM mode
General features of SVAN 953
• advanced data logger, up to 12 results logged simultaneously from three independent profiles (PEAK
/ MAX / MIN / RMS results from each profile) with time step down to 2 ms
• advanced trigger function
• USB 1.1 Client (standard) and RS 232, IrDA, USB Host interfaces (options)
• powering from four AA standard batteries (operation time - OT > 12 h) or AA rechargeable batteries
(e.g. NiMH - OT > 16 h), SA 17A external battery pack (OT > 24 h), external DC power source (6 V ÷
15 V) or USB interface (500 mA)
• handheld, robust case and light weight (only ca 600 grams with batteries, microphone and preamplifier)
Accessories included
• 7052S - prepolarised ½” condenser ACO PACIFIC’s microphone with nominal sensitivity 20 mV/Pa
• SV 12 - microphone preamplifier
• SC 16 - USB 1.1 cable
• 4x AA alkaline batteries
• SvanPC for Windows 95/98/NT/2000/XP
Accessories available
• SA 17A - external battery pack
• SA 22 - windscreen
• SA 43 - carrying case for SVAN 95x and accessories
• SA 46 - carrying belt-bag for SVAN 94x and SVAN 95x (leather)
• SA 47 - carrying bag for SVAN 95x and accessories (fabric material)
• SV 25 - dose meter microphone with integrated preamplifier and cable
• SV 55 - RS 232 option for the SVAN 955
• SvanPC+ for Windows 98/2000/XP
Software options available
• SV 953_1 - 1/1 octave analysis option
• SV 953_10 - dose meter without the SV 25 microphone
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