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SONOPAN DSA-50 Instruction Manual

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DIGITAL SOUND ANALYZER
DSA-50
Instruction Manual
P.P.U.H. "SONOPAN" sp. z o.o.
ul. Ciolkowskiego 2/2
PL-15950 Bialystok, Poland
Phone./fax +48 85 742 3662
http://www.sonopan.com.pl
January 2012

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  • Page 1 DIGITAL SOUND ANALYZER DSA-50 Instruction Manual P.P.U.H. "SONOPAN" sp. z o.o. ul. Ciolkowskiego 2/2 PL-15950 Bialystok, Poland Phone./fax +48 85 742 3662 http://www.sonopan.com.pl January 2012...

  • Page 2: Table Of Contents

    C O N T E N T S 1. FEATURES OF THE INSTRUMENT..................4 1.1. Accessories...........................5 1.2. Weatherproof accessories set for microphone ...............5 1.3. System configuration......................6 1.4. Measured quantities......................7 1.4.1. Sound level meter (SLM) mode..................7 1.4.2. 1/1-octave analyzer mode....................7 1.4.3. 1/3-octave analyzer mode....................7 1.4.4.
  • Page 3 Appendix A. Filter characteristics....................41 Appendix B. Directional responses....................45 Appendix C. Sensitivity to vibration....................48...

  • Page 4: Features Of The Instrument

    1. FEATURES OF THE INSTRUMENT Digital sound analyzer model DSA-50 is the instrument combining the features of integrating sound level meter as well as 1/1- and 1/3-octave band frequency analyzer. The majority of quantities characterizing occupational, environmental and other kinds of acoustic noise can be measured by this Class 1 digital-signal-processing instrument.

  • Page 5: Accessories

    • OP 60/2 microphone windscreen. • Carrying case. • 1.8 m USB interface cable. • DSA-50 computer software for instrument remote operation (PC under MS Windows 98SE/ME/2000/XP required). • DSA Monitor computer software for data display, readout and analysis (PC under MS Windows 98SE/ME/2000/XP required).

  • Page 6: System Configuration

    Fig. 1.4. Assembling of weatherproof accessories – step 3. Fig. 1.5. Assembling of weatherproof accessories – step 4. Fig. 1.6. Completely assembled weatherproof microphone WK-21WP. 1.3. System configuration Basic configuration: • DSA-50 digital sound analyzer (manufacturer: SONOPAN). • PW21LG ½” microphone preamplifier (manufacturer: SONOPAN).

  • Page 7: Measured Quantities

    1.4. Measured quantities Many quantities used to characterize acoustic noise can be measured simultaneously using DSA-50 digital sound analyzer. The set of measured quantities depends on instrument operating mode. Measurement duration and battery condition information is displayed at every operating mode.

  • Page 8: Infra G Filter Mode

    IMPk • L G-frequency-weighted time-average sound level. 1.5. Specifications DSA-50 digital sound analyzer conforms to requirements of following standards: EN 61672-1:2002 Electroacoustics – Sound level meters – Part 1: Specifications. EN 61260:1995/A1:2001 Electroacoustics – Octave-band and fractional-octave- band filters.
  • Page 9 - Microphone reference direction microphone symmetry axis - microphone reference point microphone diaphragm centre - reference orientation sound wave arriving from reference direction - reference temperature +23°C - reference humidity 50% RH - reference static pressure 101.325kPa • Permissible error for sinusoidal reference signal (progressive sound wave incident perpendicularly to microphone diaphragm, 94dB, 1000Hz) ≤...
  • Page 10 actuator response; expanded (k=2) uncertainty of the determination of these differences See table below and Fig. 1.7 1000 1250 1600 2000 2240 f [Hz] dL [dB] 0,00 0,02 0,03 0,04 0,05 0,08 0,11 0,18 0,26 0,36 0,43 U [dB] ≤ 0,29 f [Hz] 2500 2800 3150...

  • Page 11: Specifications For Slm Mode

    f [Hz] 8500 9000 9500 10000 10600 11200 11800 12500 13200 14000 15000 dL [dB] -0,46 0,03 -0,50 -0,66 -0,23 -0,42 -0,83 -0,33 -0,20 -0,21 0,08 U [dB] ≤ 0,34 ≤ 0,44 f [Hz] 16000 17000 18000 19000 20000 dL [dB] 0,02 -0,09 -0,08 -0,21...
  • Page 12 • Total range for L sound level and L time-average sound level 18 – 135dBA • Total range for L peak sound level 40 – 138dBC • Extents of measurement range at specified signal frequency, level range and frequency weighting: - for sound level (L) and time-average sound level (L 31.5Hz Level range...

  • Page 13: 1/1-Octave Analyzer Mode

    - measured with WK-21 microphone installed: at A frequency weighting ≤ 19dB at C frequency weighting ≤ 24dB at Z frequency weighting ≤ 27dB 1.5.2. 1/1-octave analyzer mode • Frequency weightings A, C, Z • AC electrical output (sine, 1000 Hz) - weighted frequency response A, Z - FSD output voltage for level range...

  • Page 14: 1/3-Octave Analyzer Mode

    Frequency 31.5Hz not measurable ≤ 9.0dB ≤ 14.0dB 63Hz not measurable ≤ 8.0dB ≤ 9.0dB 125Hz not measurable ≤ 6.0dB ≤ 6.0dB 250Hz not measurable ≤ 4.0dB ≤ 4.0dB 500Hz not measurable ≤ 3.0dB ≤ 3.0dB 1kHz ≤ 2.0dB ≤ 2.0dB ≤...
  • Page 15 Frequency 25Hz 9 – 60.3dB 21 – 75dB 29 – 75dB 31.5Hz 9 – 65.6dB 21 – 75dB 28 – 75dB 40Hz 9 – 70.4dB 23 – 75dB 24 – 75dB 50Hz 9 – 74.8dB 23 – 75dB 23 – 75dB 63Hz 9 –...
  • Page 16 630Hz not measurable not measurable not measurable 800Hz not measurable not measurable not measurable 1kHz not measurable not measurable not measurable 1.25kHz not measurable not measurable not measurable 1.6kHz not measurable not measurable not measurable 2kHz not measurable not measurable not measurable 2.5kHz not measurable...

  • Page 17: Infra G Filter Mode

    10kHz ≤ 7.0dB ≤ 5.0dB ≤ 9.0dB 12.5kHz ≤ 5.0dB ≤ 3.0dB ≤ 9.0dB not measurable 16kHz ≤ 2.0dB ≤ 8.0dB power sum for all 1/3-octave ≤ 14.0dB ≤ 17.0dB ≤ 22.0dB bands 1.5.4. Infra G filter mode • Frequency weightings G, I •...

  • Page 18: Influence Of Instrument Accessories

    • Influence of vibration see Appendix C • Influence of electromagnetic field conformable to EN 61672-1:2002 specifications (maximum when microphone extension cable is parallel to field direction) • Influence of electrostatic field conformable to EN 61672-1:2002 • Influence of 80 A/m a.c. power-frequency magnetic field: - SLM mode (15 –...
  • Page 19 f [Hz] 16000 17000 18000 19000 20000 dL [dB] -1.86 -1.85 -2.22 -2.54 -2.66 U [dB] ≤ 0.07 ≤ 0.10 dL[dB] -0,2 -0,4 -0,6 -0,8 -1,0 -1,2 -1,4 -1,6 -1,8 -2,0 -2,2 -2,4 -2,6 -2,8 -3,0 f[Hz] 1000 10000 100000 Fig.
  • Page 20 dL[dB] -0,5 -1,0 -1,5 f[Hz] 1000 10000 100000 Fig. 1.10. Influence of weatherproof screen.

  • Page 21: Controlling Of The Instrument

    2. CONTROLLING OF THE INSTRUMENT DSA-50 digital sound analyzer can be controlled either by instrument keyboard or by PC via USB interface. 2.1. Control keys Instrument keyboard contains following keys: • power switch, • function keys: MEMORY , FILTER , CLEAR , SETUP , TIME , RESULTS , •...
  • Page 22 The instrument is equipped with following input and output connectors: • LEMO EGG.1B.307.CLL microphone connector for microphone preamplifier Fig. 2.3. Microphone connector – external view. Pin no. Function heater polarization voltage (+200V) signal input heater +12V supply -12Vsupply shield • GS2-2 analogue AC electrical signal output connector Fig.

  • Page 23: Default Instrument Settings

    Fig. 2.6. B-type USB interface connector – external view. Pin no. Function shield 2.3. Default instrument settings Default settings of DSA-50 after instrument turn-on are specified below: • Operating mode Sound level meter (SLM) mode • Level range 55–135dB • Frequency weightings A and C •...

  • Page 24: Operation

    3. OPERATION To operate DSA-50 analyzer, select proper menu among from following: SETUP , RESULTS , TIME , FILTER , MEMORY and CLEAR using function keys. To select proper option of selected menu use arrow keys controlling the cursors. In some menus cursors are used to select proper value directly.
  • Page 25 WARNING! Results of last measurement are cleared by frequency weighting change! Analogue signal, available at instrument AC signal output is frequency-weighted as shown below: • SLM mode: Frequency weighting Frequency weighting of selected output signal A/C or A/Z Z/C or Z/Z •...

  • Page 26: Results Menu

    3.3. RESULTS menu In DSA-50 analyzer several sets of results are available. The number of these sets depends on instrument operating mode being in use. To select active set use arrow key. Following data are displayed at each operating mode: measurement duration time, overload indicator (not visible if no overload has been occurred), RUN/PAUSE state indicator, microphone heater state indicator (On/Off) and battery gauge.
  • Page 27 Frequency weighting Quantity displayed by selected analogue level indicator Analogue level indicator makes the selection of optimum level range easier. Measurement Results quantities Heater state Battery gauge Result selection Run/Pause state indicator cursor Overload indicator Run/Pause Measurement state duration Analogue level indicator Level range Fig.

  • Page 28: 1/1-Octave Analyzer

    reaching the start of the measurement. After removing required amount of one-seconds results, the measurement can be continued at a specific point by pressing RUN/PAUSE button. This is especially useful if the measurement is carried out without recording time history and user wants to remove “on the fly”...

  • Page 29: 1/3-Octave Analyzer Mode

    proportional to A-frequency-weighted S-time-weighted sound level (L ). Analogue level indicator makes the selection of optimum level range easier. 3.3.3. 1/3-octave analyzer mode key to move cursor to select bar representing signal level in one of frequency bands. Result for selected band is displayed numerically near lower display border. Most right bar, somewhat wider, marked as represents measured signal power sum from all 1/3-octave bands.

  • Page 30: Setup Time Menu

    Analogue signal level indicator is displayed near lower border of display screen. Its deflection is proportional to G-frequency-weighted S-time-weighted sound level (L ). Analogue level indicator makes the selection of optimum level range easier. Another predefined sets of results are shown on the figures below: Fig.

  • Page 31: Filter Menu

    WARNING! Results of last measurement are cleared after operating mode change! Fig. 3.25. FILTER menu. 3.6. MEMORY menu DSA-50 analyzer at every operating mode enables saving and loading of single measurement result and also recording of measurement history. To select desired option press key.

  • Page 32: Save Measure

    Fig. 3.26. MEMORY menu. 3.6.1. Save measure Storing of measurement result is possible only when measurement process is stopped. All results of present measurement together with instrument settings are stored, so the measurement may be continued after loading the measurement result. It is possible to record measurement results at every instrument operating mode.

  • Page 33: Measurement History

    To select memory cell, from which data should be loaded use keys. The date and time of stored measure is displayed near lower left corner of the screen. To load content of selected cell press key or press to cancel. If no data are stored in instrument memory then the message: NO DATA IN MEMORY! is displayed.
  • Page 34 Fig. 3.31. MEMORY menu, measurement history, selecting data in SLM mode. Maximum recording duration is shown in table below (hh:mm:ss): No. of Maximum recording duration, when recording every: quantities 97:56:56 489:44:40 979:29:20 1469:14:00 2938:28:00 5876:56:00 58:46:09 293:50:45 587:41:30 881:32:15 1763:04:30 3526:09:00 41:58:41 209:53:25 419:46:50...
  • Page 35 3.6.3.3. 1/3-octave analyzer mode This operating mode enables to record values of 1 to 2 quantities. All quantities are determined for time interval elapsed since last recording. As for first recording after measurement run, the time interval is taken since measurement run moment. The quantities can be recorded for all filters are as follows: •...

  • Page 36: Free/Occupied Menu

    Maximum recording duration is shown in table below (hh:mm:ss): No. of Maximum recording duration, when recording every: quantities 97:56:56 489:44:40 979:29:20 1469:14:00 2938:28:00 5876:56:00 58:46:09 293:50:45 587:41:30 881:32:15 1763:04:30 3526:09:00 41:58:41 209:53:25 419:46:50 629:40:15 1259:20:30 2518:41:00 32:38:58 163:14:50 326:29:40 489:44:30 979:29:00 1958:58:00 3.6.4.

  • Page 37: Measurement History

    Fig. 3.39. CLEAR menu, clearing of entire memory. 4. COMMUNICATION WITH COMPUTER DSA-50 should be connected with battery-powered PC class computer USB interface using original interface cable, supplied together with the instrument. CD supplied with the instrument contains following data: •...

  • Page 38: Recomendations For Instrument Use

    Correct measurement can be performed only when calibrated instrument is used. Recommended sound calibrator for DSA-50 analyzer is SONOPAN KA-50 sound calibrator. This device produces calibrated sound signal of 94 dB nominal sound pressure level and 1000 Hz nominal frequency.

  • Page 39: Warranty

    • after complaint receipt is confirmed send the instrument with Warranty Card included to SONOPAN by freight company, • if SONOPAN service find instrument damage to be not covered by warranty or warranty conditions to be not fulfilled, then the purchaser is obliged to cover service and transport costs as specified in the bill made out by SONOPAN, •...

  • Page 40: Maintenance And Repair

    5.5. Maintenance and repair DSA-50 digital sound analyzer requires no special maintenance treatments. All repairs of the instrument are performed by the manufacturer . 6. CE MARKING AND CONFORMANCE TO EU COUNCIL DIRECTIVES The product described in this instruction conforms to following EU Council Directives:...
  • Page 41 Appendix A. Filter characteristics L[dB] -10,0 -20,0 -30,0 -40,0 -50,0 -60,0 -70,0 -80,0 1000 10000 f[Hz] 100000 Fig. A.1. The characteristics of A filter, conformable to EN 61672-1:2002 class 1 requirements. L[dB] -10,0 -20,0 -30,0 -40,0 -50,0 -60,0 -70,0 -80,0 1000 10000 f[Hz]...
  • Page 42 L[dB] -10,0 -20,0 -30,0 -40,0 -50,0 -60,0 -70,0 -80,0 1000 10000 f[Hz] 100000 Fig. A.3. The characteristics of Z filter, conformable to EN 61672-1:2002 class 1 requirements (-3dB at f = 8,7Hz and f = 24,93kHz). L[dB] -10,0 -20,0 -30,0 -40,0 -50,0 -60,0...
  • Page 43 L[dB] -10,0 -20,0 -30,0 -40,0 -50,0 -60,0 -70,0 -80,0 -90,0 0,10 1,00 10,00 f/f0 Fig. A.5. The characteristics of 1/3-octave bandpass filter (upper centre frequency), conformable to EN 61260:1995/A1:2001 class 1 requirements. L[dB] -10,0 -20,0 -30,0 -40,0 -50,0 -60,0 -70,0 -80,0 -90,0 0,10...
  • Page 44 L[dB] -10,0 -20,0 -30,0 -40,0 -50,0 -60,0 -70,0 -80,0 -90,0 0,10 1,00 f/f0 10,00 Fig. A.7. The characteristics of 1/3-octave bandpass filter (lower centre frequency), conformable to EN 61260:1995/A1:2001 class 1 requirements.
  • Page 45 Appendix B. Directional responses Instrument orientations corresponding to directional responses shown below: inner curve outer curve WARNING! Dynamic range of logger used to made directional responses was equal 25dB, so scale interval equals 0.5dB and maximum scale value is 25dB. Fig.
  • Page 46 WARNING! Dynamic range of logger used to made directional responses was equal 25dB, so scale interval equals 0.5dB and maximum scale value is 25dB. Fig. B.2. Directional response of the instrument at 2kHz. Fig. B.3. Directional response of the instrument at 4kHz.
  • Page 47 WARNING! Dynamic range of logger used to made directional responses was equal 25dB, so scale interval equals 0.5dB and maximum scale value is 25dB. Fig. B.4. Directional response of the instrument at 8kHz. Fig. B.5. Directional response of the instrument at 12.5kHz.
  • Page 48 Appendix C. Sensitivity to vibration Instrument orientation used during vibration sensitivity determination: X axis Z axis Y axis Fig. C.1. Sensitivity of DSA-50 to X-directed vibration. Fig. C.2. Sensitivity of DSA-50 to Y-directed vibration.
  • Page 49 Fig. C.3. Sensitivity of DSA-50 to Z-directed vibration.

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