SVAN 945A
Sound Meter and Analyser

The SVAN 945A is all digital, Type 1 sound meter along with analyser. Instrument is intended to general acoustic measurements, environmental noise monitoring, occupational health and safety monitoring.

Three acoustic profiles allow parallel measurements with independently defined filters and RMS detector time constants. Each profile provides significant number of results (Leq, LMax, LMin , LPeak, SPL, SEL, Lden, LEPd etc.). Advanced time history logging for each profile provides complete information about measured signal in non-volatile 8 MB (or 48 MB option) internal memory and can be easy downloaded to any PC using USB 1.1 interface and SvanPC software.

 

Using computational power of its digital signal processor the SVAN 945A can perform real time 1/1 & 1/3 octave analysis with time history, Min & Max spectra's and including statistical calculations; real time FFT analysis with spectra's logging and selectable lines number up to 1920; reverberation time RT 60; Tonality; Loudness and acoustic dose meter (options).

Fast USB 1.1 interface (12 MHz) creates real time link for the SVAN 945A as a PC "front-end" application.

Measurement results can be stored in large 8 MB or 48 MB (option), non-volatile memory and easy downloaded to any PC using SvanPC software.

Thanks to built in rechargeable batteries and robust, lightweight design the SVAN 945A can be used in hard environmental conditions over the whole work day.

FEATURES

  • Type 1 Sound Level Meter (sound measurements in 1 Hz ÷ 20 kHz band)
    PTB approved
  • Three parallel independent profiles of the meter mode with time history
    (simultaneous to frequency analysis)
  • 8 MB or 48 MB (option) internal memory for logging more than
    one week (six weeks) of three 1 sec results (one result per profile)
  • Measurement range 22 dBA RMS ÷ 140 dBA Peak in SLM mode
  • 1/1 and 1/3 octave real time analysis with time history, Min & Max spectra's and statistical calculation (option)
  • FFT real time analysis in 20 kHz band with spectra's logging, selectable number of lines up to 1920, several window types (option)
  • RT 60 Reverberation Time (option)
  • Tonality (option)
  • Loudness (option)
  • Acoustic dose meter (option)
  • Enveloping (option)
  • Advanced trigger function
  • Built in temperature and static pressure sensors
  • Markers
  • Outdoor microphone kit SA 200A (option)
  • Easy in use
  • USB 1.1 interface
    (real time PC "front end" application supported)
  • Integration time programmable up to 24 h
  • Hand held, light weight and robust case
    (only ca 600 grams including batteries)
  • Menu languages: English, Italiano, Polski, Magyar, Turkish, Flamish, Francais
SVAN 945A Technichal specifications
SOUND LEVEL METER
Standards Type 1 IEC 651, IEC 804 and IEC 61672-1
Results SPL, Leq, SEL, Lden, LEPd Ltm3, Ltm5, statistics - Ln (L1 - L99), LMax, LMin, LPeak, Time History

Three profiles measure simultaneously with independent set of filters and detector times.
Weighting Filters A, C, G and Lin (Type 1: IEC 651, IEC 804 and IEC 61672-1)
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB,
Time Constants: Slow, Fast, Impulse.
SOUND ANALYSER (OPTION)
1/1, 1/3 octave* Real time analysis with spectra logging down to 2 ms step
FFT* Real time analysis in 20 kHz band and sub-bands with time history, selectable number of lines up to 1920, window types: HANNIG, RECTANGLE, FLAT TOP, KAISER-BESSEL
RT 60* Reverberation time analysis in 1/3 octave bands
Tonality* Pure tone indication based on the FFT analysis
Loudness* Based on ISO 532 B and Zwicker model
Acoustic dose meter Acoustic dose meter meeting IEC 61252
* EACH OPTION PARALLEL TO METER MODE
BASIC DATA
Input Five 5 pin LEMO connector
Preamplifier SV 11 Microphone preamplifier supporting 200 V polarization voltage
Microphones GRAS 40AN Type 1 1/2" condenser microphone (1 Hz ÷ 20 kHz; 50 mV/Pa sensitivity)
Measurement Range 22 dBA RMS ÷ 140 dBA Peak (with 5 dB margin from noise level)
Dynamic Range 120 dB (meter mode), 100 dB (analyser mode)
Resolution 0.1 dB
Internal Noise Level less than 17 dBA RMS
Frequency Range 1 Hz ÷ 20 kHz (input microphone dependent)
Sampling Rate 48 kHz
Display LCD 97 x 32 pixels plus icons with backlighting
Memory 8 MB or 48 MB (option) non-volatile flash type
Interface USB 1.1 (real time PC "front end" application supported), analogue output AC 1 V Peak
Power Supply
  • Built in rechargeable batteries operation time more than 12 h (4.8 V / 1.6 Ah)
  • With external battery operation time > 24 h (optional SA 17 pack)
  • External power supply 6 ÷ 15 V DC (1.5 W)
Environmental Conditions Temperature -10oC to 50oC
Humidity up to 90 % RH, non condensed
Dimensions 336 x 82 x 42 mm (with microphone and preamplifier)
Weight Approx. 0.6 kg with battery
Main result one channel view
1/3 octave spectrum
Loudness
SVAN 945A - 10 Reason Why to Choose
  1. A powerful Type 1 Sound Level Meter conforming standards: IEC 651,
    EN 60651, IEC 804, EN 60804, IEC 61672, and ANSI S1.4-1983 (R 2001).
    • Providing measurements results: SPL, Leq, Lden, Ltm3, Ltm5, SEL, Peak, Statistics, LMax, LMin, LPeak and the Time History with 2 ms step;
    • A state of the art "3 SLM's in One meter," three profiles of SLM mode operate parallel to the frequency analysis function;

  2. The SA 201 outdoor microphone kit allows applying this instrument for outdoor sound monitoring.

  3. Several advanced analysis tools offered as the options (possible later upgrade without resending instrument to manufacturer).
    • real time 1/1 and 1/3 octave analysis with statistics and spectra recording - 50 spectra/second (2 ms logging step),
    • real time high resolution (1920 lines) FFT analysis in 20 kHz band and sub-bands with Hanning window,
    • Reverberation time RT 60 in 1/3 octave bands,
    • Tonality,
    • User defined measurement sequences,
    • Loudness.

  4. Powerful Acoustic & Vibration Data Logger with Flash memory up to 48 MB and advanced auto save/event triggering capabilities.

  5. More than 12 hours on the internal rechargeable battery operating time with only 21 ounces (600 grams) instrument weight including battery.

  6. State-of-the-art (DSP based with sophisticated algorithm software) and very robust design.

  7. A USB interface for fast real time data transfer to PC. Thanks to supplied in standard MS Windows wave driver it is easy to apply as a real time PC "front end" data acquisition tool.

  8. Continuous development of the instrument firmware guarantees that this product will fulfil future version of the International Standards.
  9. SvanPC+ sophisticated software, compatible with Windows 95, 98, NT, XP and 2000. This software allows downloading data, presentation of the data in effective and easy way, format conversion and import to other application like MS Excel etc. The SvanPC+ is a free software and is provided with each instrument.
SVAN 945A - User Manual
Click below to download
Contents
Chapter 1 Introduction
Chapter 2 Manual Control of the Instrument
Chapter 3 Setting of the Instrument
Chapter 4 Measurement Functions of the Instrument
Chapter 5 Auxiliary Function

Appendixes
Appendix A Remote Control (firmware version 5.14)
Appendix B PC Downloaded Data Files Structure (firmware 5.12)
Appendix C Technical Specification
Appendix D Definitions and Filter Characteristics

Appendix G Reverberation Time Measurements (RT 60)
Appendix H Reverberation Time Measurements (RT 60)
CE Declaration of Conformity
SVAN 945A- Drivers / Software
Click here to download
ZIP file [ 777 KB] SvanPC v. 2.6.06 (8/05/2006) (RS 232 interface only)
ZIP file [ 813 KB] SvanPC v. 2.7.18 (5/12/2007) (both RS 232 & USB)
ZIP file [ 360 KB] USB drivers v. 1.3.6n (14/06/2007)