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Svantek SVAN 979, User Manual

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138 

     SVAN 979 User Manual 

 

 

If you downloaded a file, you can open it with a 
double-click, if you downloaded the whole folder, 
you  need  to  link  the  downloaded  data  set.  The 
easiest  way  for  this  is  to  use  the  + 
project  functionality.  For  this,  close  the  "SVAN 
Files" window and create a new project ("File -> 
New Project" and select "Simple project" as the 
project type). 

A window on the left side with a list of project files 
(empty for now) will appear. Add files / folders to 
the project that you wish to combine. The easiest 
way to do this is through drag & drop operations 
from the file explorer by selecting the folder / files 
and  dragging  it  to  the  +  window.  The 
program  will  automatically  link  all  files  from  the 
folder, whereby the program may ask how to link 
files - in case of STIPA, the option you choose is 
irrelevant  because  STIPA  measurements  are 
linked by grouping on matching projects, areas, 
sources, points. After this operation, the STIPA 
results window will appear automatically. 

 

Summary of Contents for SVAN 979

Page 1: ...USER MANUAL SVAN 979 SOUND VIBRATION ANALYSER Warsaw 2021 05 28 Rev 2 01 Copyright 2021 SVANTEK All rights reserved ...

Page 2: ... manual belong to their respective manufacturers Microsoft and Windows are registered trademarks of Microsoft Corporation The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG Inc Disclaimer Information in this document is subject to change without notice and does not represent a commitment on the part of Svantek Svantek provides this document as is without warranty of...

Page 3: ... Vibration signal 37 3 3 4 Calibration by Measurement Acoustic signal 37 3 3 5 Calibration by Measurement Vibration signal 38 3 3 6 History of performed calibrations Last Calibration 39 3 3 7 Erasing calibration records Clear Calibr History 40 3 3 8 Automatic calibration Auto Calibration 40 4 CONFIGURING MEASUREMENT PARAMETERS MEASUREMENT 42 4 1 SETTING UP GENERAL MEASUREMENT PARAMETERS GENERAL SE...

Page 4: ...METERS INSTRUMENT 78 7 1 MEASUREMENT AUTO START AUTO START 78 7 2 CHECKING POWER BATTERY 79 7 3 BLUETOOTH ACTIVATION BLUETOOTH 79 7 4 INTERFACE PARAMETERS SETTINGS COMMUNICATION PORTS 79 7 5 SETTING EXTERNAL POWER ON OFF CONDITIONS EXTERNAL POWER 80 7 6 SETTING GPS PARAMETERS GPS 80 7 7 SELECTING IEPE CURRENT SUPPLY IEPE CURRENT 81 7 8 PROGRAMMING KEYBOARD KEYBOARD SETTINGS 81 7 9 CHECKING THE MOD...

Page 5: ...TAVE SPECTRA VIEWS 104 10 3 1 Presentation of 1 1 1 12 octave spectra 104 10 3 2 Adjusting scales of the spectrum plot Display Scale 105 10 3 3 Selecting spectra to be viewed Spectrum View 106 10 3 4 Spectrum statistics 107 10 3 5 Changing spectrum type in Vibration modes Spectrum Type 108 10 4 SETTING FILTER COEFFICIENTS FOR 1 1 OCTAVE 1 12 OCTAVE ANALYSIS SPECTRUM BASED FILTER 109 11 FFT ANALYSE...

Page 6: ... 6 INSTRUMENT PARAMETERS 170 17 7 AUXILIARY PARAMETERS 179 APPENDIX A REMOTE CONTROL 182 A 1 FUNCTION 1 INPUT OUTPUT OF THE CONTROL SETTING CODES 182 17 8 A 2 FUNCTION 2 READ OUT OF THE MAIN MEASUREMENT RESULTS 183 A 2 1 Read out the profile results 183 A 2 2 Read out the RT60 results 185 A 2 3 Read out the RPM results 185 A 2 4 Examples 186 17 9 A 3 FUNCTION 3 READ OUT OF THE MEASUREMENT RESULTS ...

Page 7: ...VAN 979 318 C 5 MISCELLANEOUS SPECIFICATION OF SVAN 979 325 C 6 SPECIFICATION OF THE SV 80 ACCELEROMETER 332 C 7 USING THE SA 279 OUTDOOR MICROPHONE PROTECTION UNIT 333 APPENDIX D DEFINITIONS AND FORMULAE OF MEASURED VALUES 356 D 1 SOUND LEVEL METER 356 D 1 1 Basic terms and definitions SLM mode 356 D 1 2 Definitions and formulas of SLM results 357 D 2 VIBRATION LEVEL METER 360 D 2 1 Basic terms a...

Page 8: ...ew 64 Communication ports 79 Compensation filter 57 Complex parameter 23 Configuration mode 22 Control keys 15 16 18 Copying file 75 D Data port 88 Data protocol 87 Data transfer 87 Day time limits 45 Decay 117 Decay method 120 Default settings 25 Deleting all files 77 Deleting file 76 Detector 48 Diffuse field compensation 57 Digital In 82 Digital Out 82 Direct sound 34 Direct vibration 34 Direct...

Page 9: ... Logger 29 30 48 49 Logger name 50 Logger results 51 101 112 Logger split 50 Logger step 48 50 101 112 Logger trigger 51 Logger view 66 71 Logging 48 101 112 Loudness 34 125 Low range 58 M Main menu 22 Maintenance 142 Manual file saving 30 32 Marker 53 Matrix of parameters 23 Max spectrum 51 106 115 Measurement function 34 Measurement mode 21 Measurement settings 42 Measurement trigger 45 Memory 2...

Page 10: ...ignal generator view 69 Signal recording 54 Sim authentication 88 Single timer 59 Slope trigger 46 55 Slow 48 SMS 88 89 Sound analyser 13 Sound level meter 13 Sound meter 34 Source type 83 Spectrum 57 101 104 113 Spectrum based user filters 109 Spectrum statistics 51 Spectrum table 105 Spectrum type 107 108 116 Spectrum view 67 104 106 113 115 Speech intelligibility 127 Start delay 43 Start measur...

Page 11: ...11 SVAN 979 User Manual Wave format 54 Wave recording 54 Wave trigger 54 Windscreen compensation 57 Wireless transfer 86 Working directory 74 ...

Page 12: ... 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 featu...

Page 13: ...VAN 979 AS VIBRATION LEVEL METER ANALYSER General Vibration measurements acceleration velocity and displacement meeting ISO 20816 1 2016 standard in the frequency range depending on the parameters of the attached accelerometer i e with SV 80 general purpose transducer is equal to 0 5 Hz 14 kHz Parallel RMS Max Peak Peak Peak MTVV measurements Z HP1 HP3 HP10 Vel1 Vel3 Vel10 VelMF Dil1 Dil3 Dil10 an...

Page 14: ... SA 08 microphone preamplifier holder gooseneck SV 55 interface RS 232 for SVAN 979 SV 80 general purpose vibration accelerometer 100 mV g 10 mV ms 2 SV 36 Class 1 sound calibrator 94 114 dB 1000 Hz SC 27 coiled TNC TNC cable for accelerometer 2 m SC18T LEMO 7 pin to TNC integrated connector SA 27 10 32 mounting adapter for SV80 and SV81 accelerometers SA 15 power supply SV 58_C GPS module with US...

Page 15: ...d be directed so that the microphone diaphragm plane is perpendicular to the direction of the measured sound source the incidence angle of the sound wave is 0 degree In the case of significant differences between the instrument s temperature and the ambient temperature at the measurement point long enough acclimatization of the instrument is recommended so that its temperature is as close to the a...

Page 16: ... 979 is supplied disassembled so the user should mount the GRAS 40AE microphone and SV 17 preamplifier on his own It doesn t matter which elements will be assembled first the microphone with the preamplifier or the instrument with the preamplifier To connect the preamplifier with the microphone to the instrument first insert the tip of the preamplifier into the socket until the connector clicks Th...

Page 17: ...y Stick or USB hard disk enabling the device to register virtually infinite sequence of measurement results The additional multi purpose input output socket called I O is a two pin LEMO socket On this socket in case the Analogue Output functionality is selected the signal from the input of the analogue digital converter before any frequency correction is available This signal can be recorded using...

Page 18: ...oard when the first Shift Alt key should be pressed and released and then the second key pressed 2nd Function mode Note Simultaneous pressing of the Alt and Start Stop keys turning the instrument on or off Start Stop This key starts or stops the measurement You can set the mode of this key so that to start or stop the measurements you should press Start Stop simultaneously with Shift This can prev...

Page 19: ...ionship between the Y axis and X axis for plots The keys pressed together with Alt allow to change a mode of result presentation programme the Real Time Clock RTC and Timer Info The Info key simultaneous pressing the and keys opens the screen with the help information in the measurement display modes Press ESC or ENTER to exit the Info screen Markers The Markers key Alt Shift enables marking the s...

Page 20: ...320 x 240 pixels which displays the measurement results and the configuration menu The instrument has two general modes of operation measurement performance and results preview mode and configuration mode with the use of Menu functionality Turning instrument on To turn the instrument on press the Alt and Start Stop keys at the same time The instrument goes through the self test routine after turni...

Page 21: ... numerical and some graphical results like on the right hand example time history plot and spectrum In some views the screen is divided into two parts to show more numerical results in different formats or both numerical and graphical results If you are in the measurement mode you can switch between views using the keys pressed together with Alt Starting measurement To start measurement press the ...

Page 22: ...ain menu sub menu lists of options lists of parameters text editor screens information screens etc Main menu The main Menu contains the headers of seven sections sub menu which group configuration settings by feature The main Menu is opened after pressing the Menu Shift ENTER key The main Menu list contains the following sections Function Measurement Display File Instrument Auxiliary Setup and Rep...

Page 23: ...rs consists of more than one column you may change column with the key line in the same column with the key value in a selected position with the and Alt keys all values in the same column with the and Shift keys all values in the same line with the and Shift keys Complex parameters For complex parameters consisting of more than one value field like Start Hour or Start Date you should first select...

Page 24: ...A HUB For each power source there is a different view presented in the Battery screen of the Instrument list When the instrument is powered from its internal batteries the battery icon is presented on the top line of the display When the voltage of the batteries is too low for reliable measurements the icon is red or during attempt to switch the instrument on the Low Battery message occurs on the ...

Page 25: ... pressure Start Delay 1 s 1 second integration time Integration Period 00 00 01 infinitive repetition till press the Stop key Repetition Cycle Inf linear integration for the RMS base results RMS Integration Lin linear integration for statistics Statistics Lin daytime limits for Lden calculations Day Time Limits 6 18 h time frames for two rolling Leq calculations Rolling Time 1 30 m and Rolling Tim...

Page 26: ...nnected stop icon is displayed when the measurement is stopped pause icon is displayed when the measurement is paused plug icon is displayed if an external power is connected to the 7 16V socket cable icon is displayed when the microphone is connected via extension cable USB icon is displayed when there is a successful USB connection with the PC RS232 icon is displayed when the RS232 port is activ...

Page 27: ...vated and assigned for file saving memory warning icon is displayed when there is no inserted micro SD card and USB disc windscreen icon is displayed when windscreen is applied SD card icon is displayed when the micro SD card memory is inserted self vibration icon is displayed when self vibration level is exceeded Icons connected with modem functionality or no wireless icon is displayed when the G...

Page 28: ...disc activation is performed in the Communication Ports window of the Instrument section path Menu Instrument Communication Ports Activation of the USB disk can also be done in the File Manager window The user should select the USB Disk position and press the ENTER push button Then in the Command list select the Activate USB Host position and press the ENTER push button again ENT The SD Card and U...

Page 29: ...les on the USB disc enter the USB Disc catalogue system select the pre defined SYSTEM catalogue or create new catalogue and make the selected catalogue as a working one see Chapter 6 1 1 Automatic logger files saving Files which contain the logger data are saved automatically in the SD Card or USB Disk memory with an extension SVL and the mechanism described above To enable automatic saving next c...

Page 30: ...ich will be created after the next measurement You can change parameters in this screen and return to the measurement view after pressing ENTER Save Manual saving of Summary Results If the Logger or the Summary Results position is switched off in the Logger Setup list path Menu Measurement Logging Logger Setup the automatic saving of the measurement data so called Summary Results is switched off t...

Page 31: ... Measurement in progress will be displayed for about 3 seconds Note When no measurements were performed and there are no results to save all the save functions are disabled You can jump from the measurement view to the working directory in the File Manager To do this make the field with file name active by means of key and press ENTER Here you can change the working directory see Chapter 6 1 1 ENT...

Page 32: ...d upload functions as well as data view and data processing options In this case the instrument should be connected to the PC via the SC 56 USB cable Note Description of SvanPC is given in the SvanPC User Manual Uploading files Same approach is used for uploading files usually setup files Files can be upload via micro SD card and USB disk or via SvanPC software 2 11 ACTIVATION OF OPTIONAL FUNCTION...

Page 33: ...y Shift and keys right after turning on the instrument allows you to check and lock back early unlocked options For example if you wish to lock the 1 1 Octave function deselect it and press ENTER After this operation this option will be unavailable ...

Page 34: ...e Vibration Meter modes and the appropriate functions dedicated for the measurement and analysis of the vibration signal Level Meter 1 1 Octave 1 3 Octave etc 3 2 MEASUREMENT FUNCTIONS OF THE INSTRUMENT MEASUREMENT FUNCTION The main function of the instrument is the measurement of Sound pressure or Vibration broad band levels Level Meter The Sound Level Meter SLM meets the standard IEC 61672 1 201...

Page 35: ...pplied and activated by the manufacturer or purchased later and activated by the user 3 3 INSTRUMENT S CALIBRATION CALIBRATION The instrument is factory calibrated with the supplied microphone and accelerometer for the reference environmental conditions Because the accuracy of the electronic components can drift so equipment should be calibrated periodically by a competent laboratory Because the s...

Page 36: ...ress ENTER 2 Set the reference calibration level Cal Level see Appendix C Chapter C 1 par Calibration 3 Attach the sound calibrator to the instrument s microphone or accelerometer to the vibration calibrator 4 Switch on the calibrator and wait approximately 30 seconds before starting the system check measurement 5 Start the calibration measurement with the Start key The measurement starts without ...

Page 37: ...formation can be performed in the following way 1 Select the Calibr by Sensitivity position in the Calibration list and press ENTER 2 Set the Sensitivity of the accelerometer taken from its calibration certificate using the key The calibration factor Cal Factor is calculated every time after pressing the key in relation to the nominal value of 10 0 mV ms 2 For accelerometers with sensitivity highe...

Page 38: ... Start Stop key The Calibration Result measured reference signal without calibration factor correction and the New Calibration Factor difference between the Calibration Level and the Calibration Result calculated in dB are displayed 6 Press ENTER to save the new calibration factor Enter to Confirm or press ESC to reject it 7 Press ENTER to exits the Calibration by Measuement screen It is recommend...

Page 39: ...out calibration factor correction and the New Calibration Factor difference between the Calibration Level and the Calibration Result calculated in dB are displayed 6 Press ENTER to save the new calibration factor Enter to Confirm or press ESC to reject it 7 Press ENTER to exits the Calibration by Measuement screen It is recommended to repeat the calibration measurement few times Obtained results s...

Page 40: ...uto Calibration Automatic calibration feature enables calibration of the instrument input as easy as possible with minimum steps If the automatic calibration is switched on the instrument when it doesn t perform the measurement periodically compares the measured signal level with the reference calibration level and starts the calibration measurement if the stable result is within 5dB of the calibr...

Page 41: ...rection and the New Calibration Factor difference between the Calibration Level and the Calibration Result calculated in dB are displayed 3 Press ENTER to save the new calibration factor Enter to Confirm press ESC to reject it In both cases the instrument exits the Calibration by Measurement screen 4 Detach the calibrator from the microphone ...

Page 42: ...sition appears in case of Tonality function STIPA Settings allowing you to set up the STIPA parameters This position appears in the STIPA function Ambient noise allowing you to set the ambient noise levels This position appears in the STIPA function Compensation Filter allowing you to switch on the required microphone compensation filter Range allowing you to select the correct measurement range E...

Page 43: ...d of next hour after the Start keystroke and then will be repeated also from the first second of the following hour after elapsing the integration period if the number of cycles is greater than one Default value Off Disabling the measurement period definition The integration period can be set as infinite or can be defined together with the Repetition Cycles number The Integr Period Inf parameter a...

Page 44: ... the elapsed time is zeroed when the new measurement cycle starts Number of measurement repetitions The Repetition Cycles parameter defines the number of measurements with the measurement period defined by the Integration Period to be performed by the instrument after the Start keystroke The Repetition Cycles number values are within the limits Inf 1 1000 This enables to make a series of measureme...

Page 45: ...pendix D for definition Two options are available 6h 18h and 7h 19h By default it is set to 6h 18h The Rolling Time x parameter defines time window for the Rolling Leq calculation The Rolling Leq are presented as LR time window For example if the Rolling Time is equal to 30 minutes the appropriate result will be named as LR30 and will be calculated each second as Leq of last 30 minutes If the Roll...

Page 46: ...gration on condition value of the measured result Source averaged by 0 5 ms is greater lower than the threshold value Level In other cases the instrument continues checking the trigger condition every 0 5 ms When a new measurement cycle begins after pressing Start key or automatically after previous measurement cycle stop the instrument checks the trigger condition every 0 5 ms and starts 1 second...

Page 47: ... is waiting for the gradient or external trigger the trigger icon appears alternatively with the measurement icon Source result Only one measured result Source can be used for checking trigger condition in the Level Meter mode namely the instantaneous RMS from the first profile with appropriate filter and detector which is denoted here as Leq 1 in the sound mode and RMS 1 in the vibration mode Thi...

Page 48: ...some profile field for example P 1 with the or key and press ENTER ENT 4 4 DATA LOGGING LOGGING Summary Results Peak Max Min Spl Leq SEL Lden LEPd Ltm3 LTeq 10 x Ln EX SD LR1 LR2 OVL NC NR for Sound measurements or RMS Ovl Peak P P MTVV for Vibration measurements as well as 1 1 1 12 octave or FFT spectra with Total results and meteo results are measured and saved in the file with the step defined ...

Page 49: ...ording of audio signal in a wave file ENT 4 4 1 Setting logger general parameters Logger Setup The Logger Setup list enables activating the logger function and programming logging general parameters If Logger is disabled only Summary Results and Wave Recording positions are accessible in the Logging list ENT Note If Logger is disabled result files will not be created automatically and only general...

Page 50: ...Split parameter is Off the data will be logged in one logger file with the name defined in the Logger Name position Default value Off In other cases registration will be carried out in separate files and the registration in the new file will start after expiration of integration period Integr Period or at every quarter of the RTC Sync to 15m or at every half an hour of the RTC Sync to 30m or at ev...

Page 51: ... Results list allows you to include exclude logging of some summary results like Statistics Meteo Statistics Spectrum Max Spectrum and Min Spectrum for Sound measurements and Meteo Max Spectrum and Min Spectrum for Vibration measurements Default modes all disabled ENT Note The Meteo results are transmitted to the instrument from the weather station connected to the SV 279 monitoring station 4 4 4 ...

Page 52: ...nnot be changed When the 1 1 Octave or 1 3 Octave mode is chosen it is possible to use the RMS band pass value of one of the 1 1 octave or 1 3 octave spectrum filters with the appropriate central frequency as the source of the triggering signal for the logger Available values of the Source parameter for the 1 1 Octave mode Leq 1 RMS 1 125Hz 250Hz 500Hz 1 00kHz 2 00kHz 4 00kHz 8 00kHz 16 0kHz Avail...

Page 53: ...minutes and seconds in the format 0m00s as a result of multiplication of number of results by the Logger Step 4 4 5 Setting markers Marker Setup Marker is used to mark or highlight special events during the measurement such as airplane flight and is nothing but an indication of the beginning and end of the block of logger results in which the event occurred In case of point markers there is no sta...

Page 54: ...parameter defines the weighting filter during signal recording A B C Z or HP for the sound signal and HP only for the vibration signal The File Name parameter defines the name of the wave file You can edit this name in the editor screen which is opened with the key The File Length Limit parameter enables defining the limit length of the signal recorded to the WAV file When Off is selected the sign...

Page 55: ... Several WAV files can be created during one measurement The attached example shows that between measurement start and stop two records were created The first record is equal to Recording Time because during this period no second trigger condition has been met During the second recording the measurement was stopped and the record is shorter than Recording Time Note When recording is waiting for th...

Page 56: ...ed result can be used as a trigger source Source for checking the trigger condition in the Level Meter mode namely the instantaneous RMS from the first profile with appropriate filter and detector which is denoted here as Leq 1 in the sound mode and RMS 1 in the vibration mode This position cannot be changed This result averaged for the Trigger Period is compared with the Level value with the step...

Page 57: ...e supplied with SVAN 979 GRAS 40AE is designed for sound measurements in the free field conditions The Free Field option means that the correction filter for the diffuse field conditions is switched off In case of sound measurements performed with the use of different specific diffuse field response microphone types the Diffuse Field option should never be used and the microphone inner noise and t...

Page 58: ...will be changed as shown on the attached screen The right hand screens present the Range for the Vibration mode and zero calibration factor Nonzero calibration factor always shifts the lower and upper limits of the ranges for vibration modes 4 8 SETTING WORKDAY EXPOSURE TIME EXPOSURE TIME The Exposure Time parameter defines the workday exposure time that is used for the calculation of LEPd cf Appe...

Page 59: ...er of pulses per one rotation Available values are in the range 1 360 The Unit parameter defines units of measure Two options are available revolutions per minute rpm and revolutions per second rps Note The RPM results are always registered in the logger file as logger results with the logger step and as summary results with the integration period step 4 11 PROGRAMMING THE INSTRUMENT S INTERNAL TI...

Page 60: ... for multiple measurements at the programmed day and time with the selected repetition number The first start of the instrument must be within one month ahead Make sure that the RTC is configured correctly before setting up the Timer Note Make sure that there is sufficient power available for the instrument to carry out the required measurement when it wakes up and starts measurements 4 11 1 Examp...

Page 61: ...ttings are configured via SvanPC or via SvanNET web service since this function was designed for the SV 279 PRO PRIM monitoring stations If you enable advances alarms the alarm icon appears and the instrument will generate alarms according to the programmed settings The SvanPC and SvanNET manuals describe the advanced alarms configuration Enabled Alarms settings can be seen in the special measurem...

Page 62: ...ctions in the Vibration mode Logger View allowing you to select and present results stored in logger files Spectrum Compare allowing you to compare current spectrum with the reference one This position appears only in the 1 1 Octave 1 12 Octave functions Screen Setup allowing you to set up the brightness and switch on off the energy saver function Themes allowing you to set the colour theme of the...

Page 63: ...ange the displayed result with the key 5 1 2 One Result view The One Result view is always available in all measurement functions You cannot disable it In this view only one measured result is displayed in large digits One Result view fields 1 Logger file name 2 Profile number 3 Value of the measured result 4 Weighting filter Z A C B G for Sound measurements or HP HP1 HP3 HP10 Vel1 Vel3 Vel10 VelM...

Page 64: ...ith the key 5 1 3 Combined views There are three display modes that combine two views 1 Prof 3 Prof 1 Prof Logger 3 Prof Logger These display modes allow you to compare results for profiles and to follow the history of measured results saved in the logger file Alt Alt One result view fields 1 Profile number 2 Result name Spl Leq SEL Lden LEPd Ltm3 LTeq Lnn EX SD LR1 LR2 Ovl Peak Max Min for Sound ...

Page 65: ... Ltm3 LTeq Lnn EX SD LR1 LR2 Ovl Peak Max Min for Sound measurements or RMS Ovl Peak P P for Vibration measurements 5 Weighting filter A B C Z G for Sound measurements For Vibration measurements this field is skipped 6 Detector type L Linear or I Imp F Fast S Slow for Sound modes For Vibration measurements this field is skipped 7 Units of the measured value 8 Value of the measured result 9 Elapsed...

Page 66: ...tive So to have this view active enable the Logger When Logger is enabled and some results have been selected for logging the logger plot can be viewed Logger view fields 1 Y scale 2 Logger plot 3 Name of the logged result and profile number 4 Name of the file 5 Real Time Clock 6 Cursor position 7 Result value for the cursor position 8 Cursor time position You may change the cursor position with t...

Page 67: ...y function of exceeding the noise level during the measurement period The X axis defines the probability of exceeding the noise level statistical level Lnn and the axis Y defines the calculated noise level in dB Statistics view fields 1 Result name 2 Statistics plot 3 Statistical level Lnn percentile value for the active cursor position 4 Active profile P1 P2 or P3 5 RMS detector Lin or Fast Slow ...

Page 68: ...rmation about profiles If specified in that list result is not measured in any profile it will be of grey colour and without value 5 1 9 GPS view The GPS view allows you to display information from GPS module connected to the USB Device or USB Host socket of the instrument The GPS view shows the GPS status co ordinates etc This view will be active if you switch on the GPS position in the Display M...

Page 69: ...ing with the keys pressed together with Alt Auto mode means that generator starts and stops with the Start Stop key Alt To change the amplitude of the generated signal select the Amplitude field and change its value with the keys pressed together with Alt Alt To change the type of the generated signal select the Function field and change its value with the keys pressed together with Alt There are ...

Page 70: ...expressed in decibels results are calculated in relation to the values specified in the Reference Levels screen path Menu Auxiliary Setup Reference Levels Note In Vibration modes parameters can be presented in Logarithmic dB or Linear for example m s2 units It depends on the Scale parameter value For example 10 m s2 can be presented also as 140 dB Resolution The Resolution parameter appears when S...

Page 71: ... 1 In the Logger View screen you can include or exclude the curve from the logger plot first column and define the colour of this curve second column ENT The view of the logger screen can be adjusted quickly without stopping the measurement Highlight the function label in the bottom left hand corner then press ENTER The Logger View list will be displayed in which you can make necessary adjustments...

Page 72: ...use the screen to switch back on again Power saver delay The power saver delay defines the delay period from the last use of any key to the power saver mode This delay period can be set for Dim screen on idle from 5 s to 60 s and for Screen off on idle from 1 m to 60 m The ENTER key must be pressed for confirmation of the selection which then also closes the Screen Setup screen 5 5 SETTING THE COL...

Page 73: ...when an SD card or USB Disk is inserted Otherwise the instrument will generate a warning every time you try to open any position in the file list There are three types of files that the instrument generates Logger files with measured results extension SVL WAV files with time waveform records extension WAV Setup files with measurement configuration settings extension SVT The detailed description of...

Page 74: ...R or edit To edit the new directory or file name press the key and edit the name in the text editor screen Changing directories The marked directory can be opened with the key To return to the upper directory press the key 6 1 1 Assigning directory for data files saving Set as Working Dir You can assign a directory for automatic saving of data files To do this choose the required directory and pre...

Page 75: ...irectory from the files directories list of one memory to another To perform this operation select the file directory and press ENTER Select the Copy position in the command list and press ENTER The instrument will propose to choose the target directory in another memory ENT After selection of the target directory press ENTER The screen with two options will appear Copy Here and Rename In case of ...

Page 76: ...file or a directory To do this select the desired file directory and press ENTER Select the Info position in the command list and press ENTER The information screen will be opened ENT The file Info screen contains information about file size measurement function number of records with summary results and results saved with the logger step for three profiles 6 1 7 Deleting files directories Delete ...

Page 77: ...iles are stored in the default SETUP directory on the SD card ENT Saving setup files It is possible to save only current instrument s settings To save current settings in the setup file select the Save Setup position and press ENTER ENT You can edit the setup file name in the editor screen Press ENTER to confirm edition Up to 8 characters can be used to name a setup file ENT Opening setup files Op...

Page 78: ...wing you to check the status of the modem position appears when the GPRS function is switched on Multifunction I O allowing you to select the available functionality of the I O port Polarisation Voltage allowing you to choose the polarisation voltage for the instrument s microphone Remote Control Mode allowing you to configure the remote control of the instrument RS232 allowing you to set the tran...

Page 79: ...so with inactive Visible parameter If Transf on stop only is enabled the Bluetooth function is switched off during the measurement Active Bluetooth may be a source of additional internal electrical noise in a very low acoustic environment 7 4 INTERFACE PARAMETERS SETTINGS COMMUNICATION PORTS The Communication Ports position enables selecting the active communication port of the instrument You can ...

Page 80: ...refore when using the GPS module you should select the port GPS Host Port or GPS Device Port depending on your GPS type SV 58_H or SV 58_C 7 5 SETTING EXTERNAL POWER ON OFF CONDITIONS EXTERNAL POWER The External Power position allows you to set the minimum voltage of the external DC power source for example SA 15 33 when the instrument should be switched off automatically Power Off or the voltage ...

Page 81: ...elected the Shift and Alt keys operate as in a computer keyboard to achieve the desired result the second key should be pressed at the same time with Shift Alt When the 2nd Fun option is selected the Shift Alt key operates in sequence with the other one as in smartphones Due to this you can operate the instrument with one hand Start Stop key mode In the Start Stop position you can choose between D...

Page 82: ...sed as an external trigger to start the measurements The instrument is acting in this case as so called slave instrument output of the digital signal Digital Out used for triggering other slave instrument s the instrument is acting in this case as a master instrument or as a source of any alarm signal in case of certain circumstances occurred during measurements i e the level of the input signal i...

Page 83: ...Pulse which starts the measurement in another slave instrument linked to the master instrument or as an alarm signal which appears there after fulfilment of certain conditions Alarm Pulse Polarisation of the digital output trigger pulse The Polarisation parameter defines the output trigger pulse polarisation Negative or Positive Active level of the alarm pulse The Active Level parameter defines wh...

Page 84: ...il Settings screen path Menu Instrument Wireless Transfer E mail Settings Note SMS and e mails can be sent if the instrument is working as a part of SV 279 PRO monitoring station 7 11 SETTING MICROPHONE POLARISATION VOLTAGE POLARISATION VOLTAGE The Polarisation Voltage position allows you to choose polarisation voltage of the instrument s microphone in the Sound Meter mode 0V and 200V In other mod...

Page 85: ...LOCK RTC The RTC position allows you to programme the internal Real Time Clock This clock is displayed in the upper right corner of the display ENT The required time hour minute and second is set in a special screen which is opened with the key when the Time position is selected To set hour minute or second select the appropriate field with the key select value with the key and press ENTER If you ...

Page 86: ...nnection with the help of the Wireless Transfer functionality The connection with the external modem is carried out via the USB port Such solution is used in the SV 279 PRO and SV 279 PRIM monitoring stations The Wireless Transfer position allows you to select the network type and set the parameters of data transmission ENT 7 17 1 Selecting network type Network In the Network screen you can disabl...

Page 87: ...following parameters Internet Cfg if it is switched on the instrument will automatically configure the modem right after turning on Data Protocol defines connection type for data exchange Available types are TCP S server mode TCP C client mode and UDP Register Mode selecting this option ensures that the device instantly attempts to register the station provided the modem is already configured Depe...

Page 88: ...m Connection The Modem Connection position allows you to configure several parameters to establish internet connection ENT Note For connection with the SvanNET server the parameters in the Modem Connection list should be set on default values as is shown on the screenshots above and below The Modem Connection screen contains the following positions Server Address allows you to enter up to 32 chara...

Page 89: ...tered DynDns Server DynDns Hostname DynDns Login and DynDns Password allow to define the server and login information when using DynDNS service in case of dynamic IP address Edition of each position is performed in the text editor screen which is opened with the key 7 17 5 Configuring SMS service SMS Options The SMS Options position allows you to configure SMS service used for alarm notification T...

Page 90: ...s you to enter up to 32 characters of SMTP server address which will be used to send e mail messages Login Type None Login Plain or Cram These options define authentication method which depends on the SMTP server used for sending e mails In most cases Plain value is used User Login allows you to enter up to 20 characters of user login text for establishing verified connection with SMTP server User...

Page 91: ...g this option enables result mapping During measurement on going results will be placed in Holding Registers starting from appointed address It is not recommended to use this option alongside with Modbus CMD option Mb Map Index denotes address from which result map will be placed during measurements 7 18 INTRODUCING THE INSTRUMENT NAME UNIT NAME The Unit Name position allows you to edit the instru...

Page 92: ... you to select units for Vibration results This position appears only in Vibration modes Warnings allowing you to enable disable warnings to be displayed during the normal operation of the instrument 8 1 SELECTING THE USER INTERFACE LANGUAGE LANGUAGE The Language position enables selecting language of the user interface If after turning the instrument on an unknown language interface appears on th...

Page 93: ...cement signal in the range 1 pm 100 pm Reference level for sound measurements For sound measurements the Reference Levels sub lists is used to inform only the user that the reference level of the acoustic signal is equal to 20 µPa 8 4 UNLOCKING RPM FUNCTION RPM MEASUREMENT The RPM Measurement position allows you to unlock the RPM function which is usually an optional After unlocking this position ...

Page 94: ...osition is available only in Vibration modes It is possible to select the Non Metric units e g g ips mil etc or Metric units e g m s2 m s m etc ENT 8 7 WARNINGS SETUP WARNINGS The Warnings position allows you to activate messages which will be displayed during the normal operation of the instrument By default all warnings are enabled except Preamplifier and Self Vibration Level ENT Saving the meas...

Page 95: ... compensation filter every time the windscreen is removed or put on again The windscreen is detected automatically if the Windscreen parameter is set to Auto path Menu Measurement Compensation Filter Preamplifier detection If the Preamplifier warning is enabled the instrument will display the message if a preamplifier is connected to the instrument through the extension cable Self vibration warnin...

Page 96: ...ual Low Battery warning If the Low Battery warning is enabled the instrument will display the message in the case the internal battery capacity drops below 10 Warning Low Battery will be displayed shortly every 20 seconds ...

Page 97: ...blue RS232 icon appears on the display Note Before printing be sure that the RS232 port is active path Menu Instrument Communication Ports The RS232 position is switched on by default in the Communication Ports list of the Instrument section ENT Additionally in the RS232 list path Menu Instrument RS232 select the proper speed of the transmission Baud Rate and the time limit during which the commun...

Page 98: ...rring all data If the Prompt parameter was selected in the Eject Page position the following confirmation question is displayed after printing path Menu Report Options You should answer in this case if the paper in the printer has to be ejected to the new page The similar message is displayed after sending out statistics and user filters to the printer Print Statistics and Print User Filters The m...

Page 99: ... the paper after the listing is done The following options are available Prompt the instrument asks whether to eject the page after printing report statistics or catalogue Auto after printing the paper is ejected automatically and None the paper is not ejected after printing In particular it is possible to have one result after another using the None or Prompt options The request is displayed afte...

Page 100: ... octave 1 12 octave band the Leq RMS result is calculated and presented as a bar on the spectrum plot Spectra can be examined on a display in the Spectrum view The read out of spectrum values can be done using a vertical cursor Besides results for bands three Total values are measured and displayed as additional three bars on the spectrum plot Parameters for Total values e g filters are set by def...

Page 101: ... step and or Logger Step For logging 1 1 octave 1 12 octave spectra the Logger position must be enabled in the Logger Setup screen path Menu Measurement Logging Logger Setup If you wish to save spectra together with Summary results you must enable the Summary Results position 1 1 octave 1 12 octave spectra will be then logged with the Integration Period step The instrument allows additional loggin...

Page 102: ...o 16 kHz 1 3 Octave o Audio 20 20k 31 filters with centre frequencies from 20 Hz to 20 kHz o Full 0 8 20k 45 filters with centre frequencies from 0 8 Hz to 20 kHz 1 6 Octave o Audio 21 1 21 1k 61 filters with centre frequencies from 21 1 Hz to 21 1 kHz o Full 0 75 21 1k 90 filters with centre frequencies from 0 75 Hz to 21 1 kHz 1 12 Octave o Audio 20 5 21 8k 122 filters with centre frequencies fr...

Page 103: ...rom 0 75 Hz to 21 1 kHz 1 12 Octave o Full 0 73 21 8k 180 filters with centre frequencies from 0 73 Hz to 21 8 kHz Weighting filter selection Following weighting filters are available for the 1 1 Octave 1 12 Octave sound analysis HP class 1 according to IEC 61672 1 2013 Z class 1 according to IEC 61672 1 2013 A class 1 according to IEC 651 and IEC 61672 1 2013 C class 1 according to IEC 651 and IE...

Page 104: ...tions are used for setting views of 1 1 octave 1 12 octave results Display Modes allowing you to activate the Spectrum and Spectrum Table views Display Scale allowing you to adjust scales of a spectrum plot and toggle the grid Spectrum View allowing you to select spectra to be viewed instantaneous averaged maximum or minimum Spectrum Type allowing you to change the spectrum type presented on the d...

Page 105: ...t Display Scale The Display Scale screen allows you to define the result units absolute or logarithmic adjust scale of plots and toggle the grid ENT Scale of results presentation The Scale parameter defines results units linear Lin m s2 m s etc or logarithmic Log dB For sound measurements the Scale position is not active All results are always presented in dB The Log option means that the graphica...

Page 106: ...on allows you to toggle the horizontal grid lines of the logger or spectrum plot Switching the automatic Y scale adjustment on off The Autoscale position switches on the automatic adjustment of the Y scale Auto scaling is performed only once at the start of the measurement to set the most appropriate scaling for the display 10 3 3 Selecting spectra to be viewed Spectrum View In the Spectrum View s...

Page 107: ... field in the lower left hand corner of the display with the key Then select the appropriate value with the key pressed together with Alt Alt The NR or NC results can be seen also in the 1 Profile and or 3 Profile modes If the NC or NR result exceeds the maximum value for which the curves are defined NC 70 or NR 130 then before the displayed result the character appears and the highest defined cur...

Page 108: ...t to the 1 1 Ln s 1 12 Ln s with the key pressed together with Alt Alt Ln spectrum view fields 1 Ln spectrum name 2 Ln spectrum bar plot 3 Leq value for the cursor position 4 Lnn value for the cursor position 5 Leq spectrum curve plot 6 Central frequency for the cursor position 10 3 5 Changing spectrum type in Vibration modes Spectrum Type In the Spectrum Type screen which is available only in Vib...

Page 109: ... with the use of the User Total 1 User Total 2 and User Total 3 positions ENT Sound modes In the User Total x screen you can select one of the five above mentioned filters S1 S2 S3 S4 or S5 and set the calibration factor applied to the Total value calculation Vibration modes In the User Total x screen you can select one of the five above mentioned filters S1 S2 S3 S4 or S5 set the calibration fact...

Page 110: ...0 0dB 100 0dB for 1 00 Hz in the range 100 0dB 100 0dB for 20 0kHz in the range 100 0dB 100 0dB Clearing coefficients of the user filters The Filter Clear position allows you to clear values of the user coefficients of octave or third octave filters It is possible to clear all sets of coefficients All or to clear the selected set Sx ENT ...

Page 111: ...urrent function the measurement must be stopped 11 2 CONFIGURING FFT ANALYSER Execution of the FFT analysis depends on a certain number of the parameters configured in the Measurement section 11 2 1 General measurement settings of FFT analysis General Settings FFT spectra are averaged during Integration Period and saved as Summary Results the number of times specified by the Repetition Cycles para...

Page 112: ...alysis frequency band Band pre weighting filter Filter weighting window Window number of lines Lines and averaging type Averaging ENT The Band parameter defines the band for the FFT analysis performance 20 kHz 10 kHz 5 kHz 2 5 kHz 1 25 kHz 625 Hz 312 Hz 156 Hz or 78 Hz The following weighting filters Filter are available for the FFT analysis of sound HP class 1 according to IEC 61672 1 2013 Z clas...

Page 113: ...u to select spectra to be viewed instantaneous averaged maximum or minimum Spectrum Type allowing you to change the spectrum type presented on the display in vibration modes acceleration velocity or displacement This position appears in the vibration modes 11 3 1 Presentation of FFT spectra Spectrum plot view The Spectrum position in the Display Modes list becomes available for the FFT function It...

Page 114: ...sults presentation The Scale parameter defines results units linear Lin m s2 m s etc or logarithmic Log dB For sound measurements the Scale position is not active All results are always presented in dB The Log option means that the graphical presentation is given in the logarithmic scale and the measurement results are expressed in decibels the result is related to the values set in the Reference ...

Page 115: ... mode Averaged Instantaneous Max or Min When the Averaged or Instantaneous spectrum is selected you can additionally switch on or off the presentation of the Max and or Min values by switching the Max or Min parameters on To enable to read the Max or Min values at the cursor position select the field in the lower left hand corner of the display with the key Then select the appropriate value with t...

Page 116: ...trum Type In the Spectrum Type screen which is available only in Vibration modes you can select the different types of vibration spectra to be presented on the display Acceleration Velocity or Displacement ENT As an example same spectrum is presented as Acceleration and Velocity ...

Page 117: ...familiarize with Appendix E before proceeding This chapter describes only the navigation of the instruments whereas Appendix E depicts the definitions and describes reverberation time measurements 12 1 SELECTING THE RT 60 FUNCTION To activate the RT60 analysis function select the RT60 position in the Measurement Function list and press ENTER ENT Note The RT60 function is optional and should be unl...

Page 118: ...e moment of the trigger condition appearance Recording time can be set in the range 1 30 s The Time Step parameter defines the time step of data registration sound pressure level in the file The parameter value can be selected from the set 2 5 10 20 50 100 ms The Smoothing position allows you to set the number of samples which should be taken into consideration by the smoothing algorithm The highe...

Page 119: ...he RT60 measurement If the measured sound is below the Level value the RT60 measurement will not start The parameter can be set in the range 24 136 dB with 1 dB step default value is 100 dB For the Impulse method the source is Leq 1 integrated by 0 5 milliseconds For the Decay method the source is Leq 1 integrated by 1 second It also should be stable within 0 5 dB for 2 seconds 12 3 CONFIGURING RT...

Page 120: ...rt the measurement process by pressing the Start Stop key While the instrument is waiting for the trigger condition fulfilment the Spl result is displayed 6 Switch off the sound power source the source should work enough long to obtain the acoustic field stabilisation After the trigger condition fulfilment the instrument starts to collect data 7 After the data recording process ends the instrument...

Page 121: ...tion of the reverberation time results During this process the messages Reading Logger and Calculations appear 4 To save results press the Save key or use the File menu option Note During the data collections in the tested room all other sources of sound should be suppressed to not affect the measurements 12 5 VIEWING OF RT60 RESULTS The RT60 measurement results for all 1 1 or 1 3 octave bands and...

Page 122: ...f the reverberation time results from several measurements To make averaging of the new results with the results calculated earlier the Start key should be pressed and first measurement completed select the Averaging field and press ENTER In the Warning screen select Yes and press ENTER In the field No x the value x will be increased by one and the symbol will inform that the results have been ave...

Page 123: ...position T0 marker position is used as a starting point to all three and the RT User also reverberation time calculations On the display T1 marker position is labelled indicator A7 as EDT RT20 or RT30 according to which the most restricted definition of the RT condition is fulfilled Changing the data type When the field 9 is active the type of data displayed Raw Smoothed or Integrated can be chang...

Page 124: ...r reverberation time calculation process 2 Set the position of the marker T1 Note The marker should be located on the right side of the T0 marker but not in the noise background region for more details see Appendix E 3 When the marker position is located press ENTER then select Yes field and press ENTER again 4 The RT User result will be calculated and presented in the field 13 as well in the Tabl...

Page 125: ...oudness analysis is performed in parallel to the Sound Level Meter measurements 13 1 SELECTING THE LOUDNESS FUNCTION To activate the Loudness analysis function select the Loudness position in the Measurement Function list and press ENTER ENT 13 2 VIEWING LOUDNESS RESULTS The results of the Loudness function can be viewed in a special view mode Loudness path Menu Display Display Modes The Loudness ...

Page 126: ... You may change the cursor position with the keys The bark number and appropriate value are presented in the line below the plot You may shift the Y axis during the spectrum presentation the keys pressed together with Shift Sh ...

Page 127: ...th the octave bands from 125 Hz up to 8 kHz Each noise carrier is modulated with one or more modulation frequencies at one third octave intervals ranging from 0 63 Hz up to and including 12 5 Hz Such test signal which simulates speech fluctuations is reproduced in a room or through a communication channel and received at a listener position superimposed by distortions presented in the room like ec...

Page 128: ...nt of the tested area LAeq A weighed time averaged sound level for 15 seconds integration period in dB LCeq C weighed time averaged sound level for 15 seconds integration period in dB LZeq Z weighed time averaged sound level for 15 seconds integration period in dB LAS time weighted sound level expressed at observation time 15 seconds integration period in dB m f1 m f2 modulation transfer ratios as...

Page 129: ... Modulation function view corresponds with the measurement selected in the Point view Modulation function presents LZeq and modulation transfer ratios m f1 m f2 for seven octave bands with central frequency from 125 Hz up to 8 kHz In case the modulation ratios are greater than 1 due to errors or disruptions detected during the measurement they are given a value of 1 and the results for this band a...

Page 130: ... in the instrument s memory Projects can be accessed through File Manager For example in the below screens the project directory PROJ_001 contains one area directory AREA_001 which contains one source position directory S1 which contains two points directories P1 and P2 and file with the ambient noise distortions NOISE SVL Directory P1 contains files with measurement results M1 SVL M2 SVL First th...

Page 131: ... This averaging concerns two aspects 1 averaging of results for a measurement point Averaged STI CIS for the measurement point is displayed in the left upper corner of the Point view and in the measurement points list of the Area view 2 averaging of results for a tested area Averaged STI CIS for the tested area is displayed in the left upper corner of the Area view and in the second line of the Ar...

Page 132: ...ame will be displayed in the Project position of the STIPA Settings screen ENT 3 Go to the Area position press the key and in the Select Area screen select New Area to create a new area directory or select the directory of the previously created Area and press ENTER After creation of a new area directory or selection of the existed one press ENTER and the selected area name will be displayed in th...

Page 133: ...the same way as in the manual mode The difference is that in automatic mode the instrument decides when to end the series of measurements and ends it automatically when the appropriate condition is met 7 The Index position allows you to define which index STI or CIS will be displayed in the main STIPA views 8 In the Source Calibration position set the adjustment of the reference STIPA signal level...

Page 134: ...ave already made the measurements for some measurement points you should create a new measurement point see step 5 2 To start measurement press the Start key The Measurement view appears showing the measurement progress bar and STI index calculated with considered ambient noise measured STI index STI qualification band LAeq and LAS results The measurement lasts 15 seconds during which the displaye...

Page 135: ...h the measurement results will be deleted from the Point directory ENT You can exclude include the selected measurement from the averaging by pressing the key together with Alt The file with the excluded measurement results will have the _ character instead of M Alt 5 After completion of the measurement series for the measurement point you can create a new measurement point pressing the Next soft ...

Page 136: ...uded point s The directory of the excluded point will have the _ character instead of P Alt You can delete a measurement point For this select it with the key and press the Delete soft key After confirmation the selected point will be deleted The point directory with all measurement files will be deleted from the Source directory ENT To view measurements for the measurement point select it with th...

Page 137: ... list on the left side of the window and then use the right arrow button As a result the file will be downloaded to the folder on the right side of the window Then just double click on the downloaded file and it will be automatically opened in the SvanPC program The STIPA results window will appear You can skip downloading the file and double click on the file in the list on the left panel then th...

Page 138: ...th a list of project files empty for now will appear Add files folders to the project that you wish to combine The easiest way to do this is through drag drop operations from the file explorer by selecting the folder files and dragging it to the SvanPC window The program will automatically link all files from the folder whereby the program may ask how to link files in case of STIPA the option you ...

Page 139: ...on on the toolbar In case of Simple project projects this window can also be opened via the Add available panel tab and selecting STI STIPA results by default appear for areas sources and points Each point on the view is a button which when pressed shows measurement results for a given point Each measurement has a checkbox which can be used to enable disable a given measurement in this situation t...

Page 140: ...from the selected cell You can copy data to the clipboard from Excel from another program as well as you can copy values from another view of SvanPC thanks to that you can import results from another SVL file If the clipboard has numerical values separated by a white space space tab enter the program will accept them correctly 14 5 5 Generating reports There are two ways to generate a report 1 Usi...

Page 141: ...nNET web service which enables basic features for the user as instrument performance control data files downloading and setup files uploading SvanNET allows usage of all type of SIM cards with a station modem regardless of having a public or private IP The connection over SvanNET allows you to use a PC mobile phone or tablet with the access to the Internet watch real time measurement results start...

Page 142: ... the rechargeable batteries can be charged only with the use of optionally provided charger SA 31 after removal them out of the instrument To change or charge the batteries switch off the instrument unscrew coin operated screw take off the black bottom cover of the instrument and slide the battery tubes out Note While changing the batteries observe the correct polarity Powering the instrument from...

Page 143: ...To extract the card push on the card and then pull it out of the slot While insertion the SD card a click sound indicates that the card is inserted properly If necessary use a tool e g pen to push the card right in 16 3 TRANSDUCERS SVAN 979 is equipped with the Lemo7 connector as an input of the measured signal taken from the microphone preamplifier or the vibration transducer Microphone The SVAN ...

Page 144: ...connection of the accelerometer to the instrument via SC18T adapter is like for the microphone preamplifier but there is no ring to be tighten to the screw thread 16 4 RESETTING THE INSTRUMENT SYSTEM RESET internal software reset clears any setup configuration and brings back the default factory settings See Factory Settings path Menu Auxiliary Setup HARDWARE RESET internal hardware reset no user ...

Page 145: ...otentially dirty industrial environment it is advisable to use the carrying case provided by the manufacturer such as the fabric material case SA 47 lightweight case SA 143 or waterproof case SA 79 which ensures excellent mechanical and environmental protection and long term storage conditions 16 8 CLEANING Clean the surface of the instrument with damp soft cloth The instrument sockets should be c...

Page 146: ...dedicated accelerometer When Vibration Meter is selected all abbreviations of the Measurement Function start from V letter Chapter 3 1 Direct Sound Measurement of sound results with other than dedicated preamplifier and microphone direct voltage input When Sound Meter is selected all abbreviations of the Measurement Function start from DS letters Chapter 3 1 Direct Vibration Measurement of vibrati...

Page 147: ...ound or vibration measurements in accordance with Class 1 IEC 61260 1 2014 1 6 octave results are presented as a spectrum plot a function of result vs central band frequency 1 6 octave results can be saved as a time history When the 1 6 Octave function is active the S 1 6 or V 1 6 abbreviation appears in the icon line Chapter 3 2 10 1 12 Octave Measurement Function enabling calculation of Level Me...

Page 148: ...apter 3 3 System Check Position in the Calibration screen allowing you to perform system check ISO 8041 1 2017 standard advises users to perform in situ checks of measuring instruments Checking should be carried out immediately before and after the measurement Chapter 3 3 1 Calibration by Sensitivity Type of calibration with the use of microphone s published sensitivity information This calibratio...

Page 149: ...er of the display in the format mm ss in the range from 00 00 to 59 59 or in the format hh mm ss in the range from 01 00 00 to 99 59 59 or in format xxxh from 100h to 999h and 999h if the elapsed time exceeds 999 hours Its maximum value is equal to the Integration Period and the elapsed time is zeroed when new measurement cycle starts Chapter 5 1 Ovl Percentage of the overloaded input signal which...

Page 150: ...ual to 1 s SEL is always equal to Leq Appendix D D 1 2 LEPd Daily Personal Noise Exposure the noise exposure level for a nominal 8 hour working day used for assessing the noise exposure of a worker during a working day The LEPd result is calculated on the base of the Leq Appendix D D 1 2 LTeq Takt Maximal Level calculated according to the German standard TA Lärm Applied filter and detector constan...

Page 151: ... function is active Appendix D D 1 2 P P Peak to peak the difference between highest and lowest value of the signal within the elapsed measurement time Appendix D D 2 2 RMS Root Mean Square result of the time weighted vibration acceleration velocity or displacement level within the elapsed measurement time Appendix D D 2 2 MTVV Maximum Transient Vibration Value according to the ISO 8041 1 2017 sta...

Page 152: ... 1 Integration Period Time of averaging of Summary Results from 1 second to Infinitive For example with 8 hours integration period the LEQ result will be averaged for 8 hours In case of Infinitive the measurement will last until the user presses the Stop key Chapter 4 1 Repetition Cycles Number of measurement integration repetitions after the Start key pressure This enables to make a series of mea...

Page 153: ...al to 30 minutes the appropriate result will be named as LR30 and calculated each second as Leq integrated during last 30 minutes Chapter 4 1 Profiles Virtual broadband level meters which calculate the set of results with own weighting filter Filter and exponential detector time constant Detector Chapter 4 3 Filter Weighting filter applied in the profile in accordance with most applicable world st...

Page 154: ...tes the effect of the SA 22 windscreen when Free Field or Diffuse Field options are selected Chapter 4 6 Range Position that enables selecting the linear operating range for the sinusoidal signal Low or High The calibration factor is always added to the range limits The ranges depend on the selected Compensation Filter Chapter 4 7 Low Low linear operating range for the sinusoidal signal The calibr...

Page 155: ...r cases the instrument continues checking the trigger condition every 0 5 mc During one measurement cycle the instrument performs as many 1 second integrations as many seconds the Integration Period consists and stops the measurement cycle Chapter 4 2 Level Type of trigger that starts the 1 second measurement integration on condition value of the RMS result Source integrated during 0 5 ms is lower...

Page 156: ...apter 4 10 Exposure Time Screen that enables setting a duration of worker s exposition to the noise This duration is considered in LEPd calculations Chapter 4 8 Appendix D D 1 2 Statistical Levels Screen that enables setting a boundary level Lnn surpassed by the temporary noise level values in not more than nn of the observation period The user can define ten statistical levels named from N1 to N1...

Page 157: ...1 12 octaves Statistics Spectrum spectra for max and min results Max Spectrum and Min Spectrum Chapter 4 4 3 Logger Step Time of measuring integrating Logger Results and recording them to the logger file same meaning as Integration Period for Summary Results Logger Step can be selected from the set 2 ms 5ms 10ms 20ms 50ms 100ms 200ms 500ms or from 1 second to 59 seconds with 1 second step or from ...

Page 158: ...Type of trigger that starts logging of Logger Results on condition value of the Leq RMS result Source integrated by the Logger Step period is lower than the threshold value Level In other cases the logging is skipped Chapter 4 4 4 Source Measured result that is compared with the threshold value Level for triggering RMS measured in the first profile Leq 1 in sound modes and RMS 1 in vibration modes...

Page 159: ...d HP for vibration The Z filter is recommended for audio listening Chapter 4 4 6 File Name Name of the WAV type file Chapter 4 4 6 File Length Limit Limit of the length of the signal recorded to the WAV file Chapter 4 4 6 Trigger on Marker Parameter that enables triggering the wave recording when one of the Marker is initiated Chapter 4 4 6 Trigger Parameter that enables switching Off or selecting...

Page 160: ...ppears on the I O socket of the instrument Chapter 4 4 6 Integr Period Type of trigger that starts the wave recording for Recording Time every time the measurement starts If Integration Period is shorter than Recording Time the wave recording will be continued for additional Recording Time Chapter 4 4 6 Source Measured result that is compared with the threshold level for triggering Level measured ...

Page 161: ...ectrum Screen that enables setting the 1 1 Octave 1 12 Octave spectrum parameters Band Filter and Detector Chapter 10 2 4 Spectrum Position in the Logger Results screen that switches on off spectra saving as a time history in a logger file Chapter 10 2 3 Band Frequency range of 1 1 1 12 spectrum Depending on the function and mode of the instrument the frequency range can be selected for sound meas...

Page 162: ...in the FFT analysis Linear or Exponential Chapter 11 2 4 Time Constant Time constant used in the exponential averaging of FFT spectra Chapter 11 2 4 RT60 Settings Screen that enables setting the reverberation time measurement parameters Start Delay Method Octave Freq Range Recording Time Time Step Smoothing Internal Signal Amplitude Noise Mar Logger Name and Level Chapter 12 2 Appendix E Start Del...

Page 163: ...rement data sound pressure level decay curve registration during RT60 calculations 1s 30 s Chapter 12 2 Appendix E Time Step Time step of data registration sound pressure level in the file during RT60 calculations 2 5 10 20 50 100 ms Chapter 12 2 Appendix E Smoothing Process of smoothing of the raw reverberation time results This is used for better visualization of the RT60 results The value of th...

Page 164: ...ents the Bark spectrum Chapter 13 2 STIPA Settings Screen that enables setting the STIPA parameters Project Area Source Averaging Standard Measurement Unit and Source Calibration Chapter 14 4 4 Project Position enabling selecting the catalogue in the instrument memory which contains Area catalogues Chapter 14 4 4 Area Position enabling selecting the catalogue in the instrument memory which contain...

Page 165: ...function enabling alarm setting generation and alerting The alarm setting can be done through the SvanPC software If Alarms were defined the they can be seen in the instrument s screens Some terms used in the SvanPC software are presented below Chapter 4 12 Alarm Conditions List of alarm conditions Alarm condition can be a Threshold or Time type Chapter 4 12 Threshold Alarm condition type Alarm is...

Page 166: ...ctave FFT and Loudness Chapter 5 1 2 Running SPL view Mode of the running SLP result view in Sound measurement modes This mode is used for the noise level estimation before the measurement start Chapter 5 1 1 1 Prof 3 Prof view Mode of presentation of one result in the upper part of the screen and three results in the lower part of the screen Chapter 5 1 3 1 Prof Logger view Mode of presentation o...

Page 167: ...ude Altitude Speed Time and Date Chapter 5 1 9 Meteo view Presentation of results measured by the weather station when the instrument works as a part of the SV 279 PRO monitoring station Chapter 5 1 10 Signal Generator view Signal generator control screen In this screen you can switch on the generator and configure its parameters Amplitude Function and Frequency The generator signal is transmitted...

Page 168: ...t results are presented always in logarithmic units dB Chapter 5 2 Resolution Number of digits after the decimal point of the results presentation one digit after the decimal point 0 1 dB or two digits after the decimal point 0 01 dB Chapter 5 2 Dynamics Range of the plot scale 10dB 20dB 40dB 80dB 100dB and 120dB Chapter 5 2 Grid Grid swither on or off during the time history or spectrum presentat...

Page 169: ...ds Chapter 10 3 3 11 3 3 NR Noise rating values for 1 1 octave sound measurements Chapter 10 3 3 NC Noise criterion values for 1 1 octave sound measurements Chapter 10 3 3 Spectrum Type Screen that enables selecting of types of spectra for displaying during vibration measurement Acceleration Velocity or Displacement Chapter 10 3 4 11 3 4 Acceleration Acceleration spectrum which is displayed if it ...

Page 170: ... off in no activity after certain delay Is setting up in the Screen Setup screen Chapter 5 4 Themes Screen that enables setting colour theme of the display Chapter 5 5 Solar Colour theme of the display Chapter 5 5 Forest Colour theme of the display Chapter 5 5 17 6 INSTRUMENT PARAMETERS Name Description Screen Reference Instrument Section in the Main Menu that enables setting the hardware componen...

Page 171: ...ernal Power Screen that enables configuring automatic instrument switching on or off in case the voltage of the external DC power exceeds or becomes lower than the threshold level Chapter 7 5 GPS Screen that enables setting parameters of the external GPS Time Zone and GPS Synchronisation switching the time synchronization on or off Chapter 7 6 IEPE Current Screen that enables setting the supply cu...

Page 172: ...Parameter that enables transmitting the analogue signal from the internal signal generator of the instrument after digital to analogue converter to the pin 1 of the I O connector and the analogue input signal to the pin 2 of the I O connector after digital to analogue converter The input signal can be weighted with HP Z A C or B filter Source and additionally gained by 60 dB to 60 dB Gain Chapter ...

Page 173: ...of the Digital Out I O mode defining the level of the signal treated as an alarm Low 0 V or High 3 V Chapter 7 10 Appendix C Source Parameter when Alarm Pulse is selected as a function of the Digital Out I O mode defining the measured result the level of which should be checked for alarm generation The measurement results from the first profile Peak 1 Spl 1 Max 1 or Leq 1 can be used Chapter 7 10 ...

Page 174: ...es programming the instrument s real time clock This clock is displayed in the upper right corner of the display Chapter 7 14 Self Vibration Screen allowing you to check the instrument s self vibration levels Chapter 7 15 Signal Generator Screen that enables switching on the signal generator function Chapter 7 16 7 15 Wireless Transfer Screen that enables configuring data transfer control via exte...

Page 175: ...method of user verification by SIM card Depending on the SIM card several options are possible some of them are recognized by the modem none no verification required PAP CHAP MsChap Chapter 7 17 3 Send SMS Parameter of the Modem screen switching on the SMS alarm notification Chapter 7 17 3 Send E Mail Parameter of the Modem screen switching on the e mail alarm notification Chapter 7 17 3 Auto Reco...

Page 176: ...hich a communication socket will be configured for data exchange between the remote host and the station Chapter 7 17 4 Registration Port Parameter of the Modem Connection screen defining the port number that denotes a port on which a communication socket will be configured to transmit registration package Register Mode On or exchange Http data Register Mode AS or SMT AS Chapter 7 17 4 APN Paramet...

Page 177: ...configuring parameters of the SMS service used for alarm notification Phone Number and Text Message Chapter 7 17 5 Phone Number Parameter of the SMS Option screen defining the phone number where the text messages will be sent Chapter 7 17 5 Text Message Parameter of the SMS Option screen defining additional text which will be appended into a standard alarm message template Chapter 7 17 5 E mail Se...

Page 178: ...ith SMPT server Chapter 7 17 6 Sender e mail Parameter of the E mail Settings screen defining e mail address from which the e mail message will be sent Chapter 7 17 6 Recipient e mail Parameter of the E mail Settings screen defining e mail address to which the e mail message will be sent Chapter 7 17 6 E mail Subject Parameter of the E mail Settings screen defining e mail message s subject Chapter...

Page 179: ... AUXILIARY PARAMETERS Name Description Screen Reference Auxiliary Setup Section in the Main Menu that enables customizing the instrument interface to specific user requirements in the screens Language Factory Settings Reference Levels RPM Measurement User Filters Vibration Units and Warnings Chapter 8 Language Screen that enables selecting the user interface language Chapter 8 1 Factory Settings R...

Page 180: ...at allows you to assign the user filter to the additional Total result with the use of the User Total 1 User Total 2 and User Total 3 screens Chapter 10 4 User Total x Screen that allows you to select the user filter S1 S2 S3 S4 or S5 to the user Total x result set the calibration factor and in case of vibration measurements type of integration filter for measuring Acceleration Velocity or Displac...

Page 181: ...bration Units Screen that enables selecting units for vibration measurements Chapter 8 6 Warnings Screen that enables activating warning messages which are to be displayed during the normal operation of the instrument Chapter 8 7 ...

Page 182: ...ires dedicated hardware and this option should be unlocked by a software code The functions which are developed in order to control data flow in the serial interfaces ensure bi directional data transmission remote control of the instrument The user in order to programme the serial interface has to 1 send the function code 2 send an appropriate data file or 3 receive a data file Following basic inp...

Page 183: ...REMENT RESULTS A 2 1 Read out the profile results 2 function enables one to read out the current measurement result from the selected profile 2 function has the format defined as follows 2 t p X X X X where t the type of the results a averaged i instantaneous c 1 second results p the number of the profile 1 2 or 3 or 0 for all profiles X the code of the result The instrument sends the values of re...

Page 184: ...ult ccc the value in dB k flag determining the kind of the result k 1 Ld result k 2 Le result k 3 Lde result k 4 Ln result k 5 Lnd result k 6 Len result k 7 Lden result I nn the LEPd result ccc the value in dB nn the value of Exposure Time in minutes Z the LTeq result ccc the value in dB L nn the value L of the nn statistics ccc the value in dB g the LR1 result ccc the value in dB h the LR2 result...

Page 185: ...re not available 2 type 1 results when results are available type accepts the following values EDT T20 T30 status is the status of device 0 no results 1 waiting for trigger 2 measurement in progress 3 calculations results is the full list of frequencies with corresponding results in the format freq1 value1 freq2 value2 freqN valueN The exemplary answer 2 T30 1 50 0Hz 63 0Hz 80 0Hz 100Hz 0 48s 125H...

Page 186: ...ends out the instantaneous results of measurement coming from the first profile in predefined described above order 2 i 1 V0 T39 P125 4 R102 1 L 01 107 9 L 10 107 6 L 20 107 2 L 30 102 8 L 40 99 0 L 50 96 7 L 60 82 5 L 70 54 5 L 80 20 9 L 90 20 4 Note All bytes of that transmission are ASCII characters 17 9 A 3 FUNCTION 3 READ OUT OF THE MEASUREMENT RESULTS IN 1 X OCTAVE OR FFT MODE 3 function ena...

Page 187: ... DISK 4 function enables the user to read out the data file from the internal Flash disc memory The data file formats are given in Appendix B 4 function formats are defined as follows 4 0 the file containing the catalogue 4 0 the count of the files 4 0 index count the part of the file containing the catalogue where index first record count number of records in the catalogue The catalogue of the fi...

Page 188: ... b6 b5 b4 b3 b2 b1 b0 where b7 0 means that overload does not happen 1 means that overload appeared b6 reserved b5 0 the instantaneous current result RUN State 1 the final result STOP State b4 1 always 1 b3 0 reserved Note There is not any succeeding transmission in case the Status Byte is equal to zero The transmission counter is a two byte word denoting the number of the remaining bytes to be tr...

Page 189: ...3 or 4 6 function formats are defined as follows 6 type L This function returns the list of the defined existing in the instrument filters in the following format 6 type n name1 namen 6 type W name v v v This function sets the coefficients of the new user filter named as name The name parameter should be unique in the instrument there is not any other filter with the same name otherwise it will be...

Page 190: ... of the user filter assigned to the pos TOTAL value of channel chn in the following format 6 type chn pos name avd cal The returned parameters name avd and cal are set in the description record after the execution of the function In case of an error they can differ from the current parameters of the function Note In case of an error all these functions return 6 A 7 FUNCTION 7 SPECIAL CONTROL FUNCT...

Page 191: ... disk3 D d This function returns the parameters of the working directory in format D d disk address count D d disk address This function enables to change the working directory Response D d command was executed D d command can not be executed D M This function returns the parameters of the last measurement directory in format D s disk address D s This function returns the parameters of the setup d...

Page 192: ...ponse D f D r disk address offsetB nB This function enables the user to read the file Response D r disk address offsetB nB data D z disk address offsetB nB This function enables the user to read the file with CRC Response D z disk address offsetB nB data CRC D w name nB data This function enables the user to write the file in the working directory Response D w A 6 FUNCTION R AUTOMATIC RESULTS TRAN...

Page 193: ...ny ASCII character from range 1 to 255 d decimal separator parameter allows for change of decimal separator character dot character as default ASCII value 46 d any ASCII character from range 1 to 255 Note The lack of any data transmission format parameter between the colon characters will keep the default value of the parameter For example command R 1 9 44 will change the result separator to the h...

Page 194: ...ctrum results will not be sent Note If the number of results sent is greater than the number of available results only available results will be sent Note If the parameter values are outside the acceptable range the command will not be accepted and the command error message will be returned see point 4 Note The identifier of any result or parameter can appear in the command only once If any identi...

Page 195: ...l identifiers appearing in the above response will be given with all parameters even if the parameters were not given in the command to enable the mode 4 Command error response R The instrument will send this response after receiving an incorrect instruction Sending this response by the instrument also means that the automatic sending of results mode is turned off 5 Results transmission R V1 Vn CR...

Page 196: ...5 72 48 74 91 73 17 81 27 81 76 80 51 80 55 80 36 81 58 78 94 80 25 80 17 79 56 79 32 79 21 78 46 78 51 77 67 76 90 75 86 76 07 76 2 4 76 15 R 13 27 56 1 123 62 93 45 72 19 75 20 78 78 83 65 103 80 88 12 82 32 79 41 74 86 77 43 76 41 83 58 83 85 82 13 81 68 82 88 82 98 80 14 81 48 81 09 81 48 81 78 81 50 81 75 81 54 81 19 81 02 80 88 80 28 80 3 1 80 19 R 13 27 57 1 123 82 93 62 73 59 76 01 78 85 8...

Page 197: ...ond R HT 11 22 56 HT 0 HT 94 64 HT 97 05 HT 98 92 HT CR LF R HT 11 22 57 HT 0 HT 95 09 HT 97 73 HT 98 90 HT CR LF R HT 11 22 58 HT 0 HT 94 25 HT 97 34 HT 99 08 HT CR LF R HT 11 22 59 HT 0 HT 96 49 HT 98 27 HT 99 12 HT CR LF R HT 11 23 00 HT 0 HT 95 74 HT 98 01 HT 99 13 HT CR LF R HT 11 23 01 HT 0 HT 95 52 HT 98 08 HT 99 10 HT CR LF R HT 11 23 02 HT 0 HT 97 83 HT 98 77 HT 99 10 HT CR LF R HT 11 23 ...

Page 198: ...10 10 2 00 kHz 6 11 11 4 00 kHz 7 12 12 8 00 kHz 8 13 13 16 0 kHz 9 14 14 31 5 kHz 15 Total 1 10 15 16 Total 2 11 16 17 Total 3 12 17 18 Indexes of 1 3 octave bands Nominal frequency Audio band Full band Ultra band 0 80 Hz 0 0 1 00 Hz 1 1 1 25 Hz 2 2 1 60 Hz 3 3 2 00 Hz 4 4 2 50 Hz 5 5 3 15 Hz 6 6 4 00 Hz 7 7 5 00 Hz 8 8 6 30 Hz 9 9 8 00 Hz 10 10 10 0 Hz 11 11 12 5 Hz 12 12 16 0 Hz 13 13 20 0 Hz 0...

Page 199: ...5 kHz 22 36 36 4 00 kHz 23 37 37 5 00 kHz 24 38 38 6 30 kHz 25 39 39 8 00 kHz 26 40 40 10 0 kHz 27 41 41 12 5 kHz 28 42 42 16 0 kHz 29 43 43 20 0 kHz 30 44 44 25 0 kHz 45 31 5 kHz 46 40 0 kHz 47 Total 1 31 45 48 Total 2 32 46 49 Total 3 33 47 50 Indexes of 1 6 octave bands Nominal frequency Audio band Full band Nominal frequency Audio band Full band 0 75 Hz 0 168 Hz 18 47 0 84 Hz 1 188 Hz 19 48 0 ...

Page 200: ...z 23 2 37 kHz 41 70 11 9 Hz 24 2 66 kHz 42 71 13 3 Hz 25 2 99 kHz 43 72 15 0 Hz 26 3 35 kHz 44 73 16 8 Hz 27 3 76 kHz 45 74 18 8 Hz 28 4 22 kHz 46 75 21 1 Hz 0 29 4 73 kHz 47 76 23 7 Hz 1 30 5 3 kHz 48 77 26 6 Hz 2 31 6 0 kHz 49 78 29 9 Hz 3 32 6 7 kHz 50 79 33 5 Hz 4 33 7 5 kHz 51 80 37 6 Hz 5 34 8 4 kHz 52 81 42 2 Hz 6 35 9 4 kHz 53 82 47 3 Hz 7 36 10 6 kHz 54 83 53 Hz 8 37 11 9 kHz 55 84 60 Hz ...

Page 201: ...BE 0 Vibration Meter 1 Sound Meter Measurement function M AL 1 Level Meter 2 1 1 Octave analyser 3 1 3 Octave analyser 5 Loudness function in SLM mode only 6 FFT analyser 7 Tonality analyser in SLM mode only 8 RT60 function in SLM mode only 15 1 6 Octave analyser 16 1 12 Octave analyser Microphone Compensation MC EY 0 Off 1 Free Field 2 Diffuse Field 3 SA279 90 4 SA279 0 Polarisation Voltage PV JO...

Page 202: ...the full 30 minutes 60 Sync to a full hour Integration Period D 0 infinity measurement finished by pressing the STOP push button or remotely by sending S0 control code nn nn number in seconds 1 86400 nns nn number in seconds 1 86400 nnm nn number in minutes 1 1440 nnh nn number in hours 1 24 Integration Period Infinity EJ 0 Off 1 On Integration Period Hour EL nn nn number of hours 0 24 Integration...

Page 203: ...nce Level Dil Xd RD BQ nn nn reference level 1 100 in pm Table A 4 Profile parameters Group name 1 code 7 code S code Code value description Filter type in profile n in SLM mode F 3 n R3 filter for profile n 2 n R2 filter for profile n 1 n R1 filter for profile n 1 n Z filter for profile n 2 n A filter for profile n 3 n C filter for profile n 4 n G filter for profile n 5 n B filter for profile n F...

Page 204: ...E detector 1 FAST detector 2 SLOW detector Detector type in profile 3 in SLM mode AC2 0 IMPULSE detector 1 FAST detector 2 SLOW detector Logger type in profile n in SLM mode B x n x sum of the following flags 1 logger with PEAK values in profile n 2 logger with MAX values in profile n 4 logger with MIN values in profile n 8 logger with RMS values in profile n Logger type in profile 1 in SLM mode A...

Page 205: ...filter for profile n 1 n HP1 filter for profile n 2 n HP3 filter for profile n 3 n HP10 filter for profile n 4 n Vel1 filter for profile n 5 n Vel3 filter for profile n 6 n Vel10 filter for profile n 7 n VelMF filter for profile n 8 n Dil1 filter for profile n 9 n Dil3 filter for profile n 10 n Dil10 filter for profile n 21 n Wh filter for profile n Filter type in profile 1 in VLM mode AR0 3 R3 fi...

Page 206: ...Filter type in profile 3 in VLM mode AR2 3 R3 filter 2 R2 filter 1 R1 filter 0 HP filter 1 HP1 filter 2 HP3 filter 3 HP10 filter 4 Vel1 filter 5 Vel3 filter 6 Vel10 filter 7 VelMF filter 8 Dil1 filter 9 Dil3 filter 10 Dil10 filter 21 Wh filter Detector type in profile n in VLM mode E 0 n 100ms detector in profile n 1 n 125ms detector in profile n 2 n 200ms detector in profile n 3 n 500ms detector ...

Page 207: ...etector 4 1 0s detector 5 2 0s detector 6 5 0s detector 7 10 0s detector Logger type in profile n in VLM mode G x n x sum of the following flags 1 logger with PEAK values in profile n 2 logger with P P values in profile n 4 logger with MAX values in profile n 8 logger with RMS values in profile n Logger type in profile 1 in VLM mode CR0 x x sum of the following flags 1 logger with PEAK values in p...

Page 208: ...d nn nn number in milliseconds 2 5 10 20 25 50 100 200 500 1000 nns nn number in seconds 1 60 nnm nn number in minutes 1 60 AG nn nn number in milliseconds 2 5 10 20 25 50 100 200 500 1000 nn 1000 6000 with step 1000 nn 60000 3600000 with step 60000 Logger Name for SD card JT xxxxx xxxxx up to 8 characters permitted characters 0 9 A Z and _ Logger Name for USB disk JU xxxxx xxxxx up to 8 character...

Page 209: ...0 Off 1 On Color index of nth logger series in 1st profile KK1n nn color index 0 30 Color index of nth logger series in 2nd profile KK2n nn color index 0 30 Color index of nth logger series in 3rd profile KK3n nn color index 0 30 Table A 6 Spectrum parameters Group name 1 code 7 code S code Code value description 1 x OCTAVE analysis band A DT 0 Full 1 Audio in SLM mode only Filter type in 1 x OCTA...

Page 210: ...is band r BJ 1 20 kHz 2 10 kHz 3 5 kHz 4 2 5 kHz 5 1 25 kHz 6 625 Hz 7 312 Hz 8 156 Hz 9 78 Hz Window in FFT analysis w BK 0 Hanning 1 Rectangle 2 Flat Top 3 Kaiser Bessel FFT lines y CY 0 1600 1 800 2 400 Averaging in FFT analysis a BL 0 Linear 1 Exponential Time Constant for exponential averaging in FFT analysis j JQ 100 100ms 125 125ms 200 200ms 500 500ms 1000 1 0s 2000 2 0s 5000 5 0s 10000 10 ...

Page 211: ...ode n BX xxx xxx level in dB 60 200 Gradient in SLM mode O BY xxx xxx gradient in dB ms 1 100 Gradient in VLM mode k BZ xxx xxx gradient in dB ms 1 100 Table A 10 Logger trigger parameters Group name 1 code 7 code S code Code value description Trigger Mode XT CA 0 Off 3 Level 4 Level Level in SLM mode XL CE x x level in dB 24 136 Level in VLM mode XC CF x x level in dB 60 200 Logger Pre triggering...

Page 212: ...characters permitted characters 0 9 A Z and _ Wave Name for USB disk KF xxxxx xxxxx up to 8 characters permitted characters 0 9 A Z and _ Wave Length Limit AF x x number in minutes with step 10 0 480 Trigger on Marker XXO BH 0 Off 1 On Trigger Mode XXu EZ 1 Slope 2 Slope 3 Level 4 Level 7 External 10 Integration Period Trigger Level in SLM mode XXv FD x x level in dB 24 136 Trigger Level in VLM mo...

Page 213: ...x x hour 0 99 Repetition Minute ET x x minute 0 59 Table A 13 Warnings Group name 1 code 7 code S code Code value description Results Not Saved WS CL 0 Off 1 On Ext Disk Free Space WF EQ 0 Off 1 On Min Free Space WM ER x x minimum disk free space 1 1024 Save Changes JI 0 Off 1 On Windscreen KL 0 Off 1 On Preamplifier KS 0 Off 1 On Self Vibration Level KR 0 Off 1 On Power Off LD 0 Off 1 On GPS Sign...

Page 214: ...ff Modbus Mode setting Internet Configure Xo HE 0 Off 1 On Data Port XJ HF xxxxx xxxxx up to 5 decimal characters 0 65535 Server Address XI HG xxxxx xxxxx up to 32 characters permitted characters 0 9 a z and _ Registration Port XK HH xxxxx xxxxx up to 5 decimal characters 0 65535 APN XN HI xxxxx xxxxx up to 32 characters permitted characters 0 9 a z and _ APN User XO HJ xxxxx xxxxx up to 32 charac...

Page 215: ...ed characters 0 9 a z A Z _ DynDns Password XXI OH xxxxx xxxxx up to 20 characters permitted characters 0 9 a z A Z _ Phone Number XXa HQ xxxxx xxxxx up to 15 characters permitted characters 0 9 Text Message XXb HR xxxxx xxxxx up to 20 characters permitted characters 0 9 a z A Z Modem Alphabet XXA HT 0 Off 1 On Send SMS XXc HU 0 Off 1 On Send e mail XXk HV 0 Off 1 On E mail SMTP Address XXd HW xxx...

Page 216: ...en reconnection attempts x 1 59 1h 1 hour between reconnection attempts ID x x number of seconds between reconnection attempts x 1 59 x x number of minutes between reconnection attempts x 60 118 119 1 hour between reconnection attempts TCP IRT IE x x number of seconds x 1 60 TCP Max Ret IF x x maximum number of TCP retransmission x 1 30 Table A 17 RT60 parameters Group name 1 code 7 code S code Co...

Page 217: ...plitude EO x amplitude for Internal Signal Generator given in mV 100 1500 Table A 18 RPM parameters Group name 1 code 7 code S code Code value description RPM Measurement Xr DO 0 Off 1 On RPM Pulse Rot Xp DP x pulse rot x 1 360 RPM Unit Xu DQ 0 rps 1 rpm Table A 19 Display modes parameters Group name 1 code 7 code S code Code value description 1 Prof 3 Prof AO 0 Off 1 On 1 Prof Logger JC 0 Off 1 O...

Page 218: ... JH 0 Off 1 On Signal Generator MO 0 Off 1 On Table A 20 Display scale parameters Group name 1 code 7 code S code Code value description Scale in SLM mode BM 1 Log Scale in VLM mode BN 0 Lin 1 Log Resolution NQ 0 0 1 dB 1 0 01 dB Dynamics in SLM mode BF 0 10 dB 1 20 dB 2 40 dB 3 60 dB 4 80 dB 5 100 dB 6 120 dB Dynamics in VLM mode NR 0 1000 1 1000000 Grid AP 0 Off 1 On Autoscale CK 0 Off 1 On ...

Page 219: ...On Table A 22 Spectrum type parameters Group name 1 code 7 code S code Code value description Spectrum Type in VLM mode only CU 0 Acceleration 1 Velocity 2 Displacement Table A 23 Screen parameters Group name 1 code 7 code S code Code value description Dim screen on idle JM 0 Off 1 On Screen off on idle JN 0 Off 1 On Dim screen delay LS x Dim screen delay x 5 60 Screen off delay LT x Screen off de...

Page 220: ... 26 RS232 ports parameters Group name 1 code 7 code S code Code value description Baud Rate BD 1 1200 2 2400 3 4800 4 9600 5 19200 6 38400 7 57600 8 115200 AQ 0 1200 1 2400 2 4800 3 9600 4 19200 5 38400 6 57600 7 115200 Time Out TO BB x RS232 time out x 1 60 Table A 27 Bluetooth parameters Group name 1 code 7 code S code Code value description Authorisation code KN xxxxx xxxxx up to 16 characters ...

Page 221: ...On Power On Threshold OC x threshold in dB 10 65 240 Table A 30 IEPE parameters Group name 1 code 7 code S code Code value description IEPE Current IE 0 IEPE Off 1 IEPE Current 1 5 mA 2 IEPE Current 4 5 mA IEPE in Sound Meter mode DR 0 IEPE Off IEPE in Vibration Meter mode GS 1 IEPE Current 1 5 mA 2 IEPE Current 4 5 mA IEPE in Direct Sound mode GT 0 IEPE Off 1 IEPE Current 1 5 mA 2 IEPE Current 4 ...

Page 222: ...e 1 Alarm Pulse Active Level Xc GH 0 Low 1 High Source in Digital Out mode Xs GI 0 Leq 1 1 Peak 1 2 Max 1 3 Spl 1 Source Type Xt IM 0 Current 1 Periodic Alarm Level in SLM mode Xn GJ x alarm level in dB 10 x 300 1400 Alarm Level in VLM mode Xn NP x alarm level in dB 10 x 600 2000 Direct only Analog Out mode Xe 0 D A 1 Direct GK 0 D A 1 Direct GL 0 Direct 1 D A Source only Analog Out mode XE GM 0 H...

Page 223: ...rs Group name 1 code 7 code S code Code value description Language LA DE German EN English SP Spanish IT Italian NL Flemish FR French HU Hungarian NO Norwegian PL Polish RU Russian TU Turkish BI 0 German 1 English 2 Spanish 3 Italian 4 Flemish 5 French 6 Hungarian 7 Norwegian 8 Polish 9 Russian 10 Turkish Table A 35 Signal generator parameters Group name 1 code 7 code S code Code value description...

Page 224: ... Statistics Spectrum XP QI 0 Off 1 On Max Spectrum XM BC 0 Off 1 On Min Spectrum Xm BD 0 Off 1 On Setup File Name FW xxxxx xxxxx up to 8 characters permitted characters 0 9 A Z and _ Table A 37 Report parameters Group name 1 code 7 code S code Code value description Format AS 0 A4 1 A5 Eject Page AT 0 None 1 Prompt 2 Auto Title FX xxxxx xxxxx up to 132 characters permitted characters 0 9 a z A Z a...

Page 225: ...DA This function deletes all files result files and setup files The function returns 7 DA This function is not accepted while the instrument is in the RUN state Temperature read only TP x temperature 10 C Pressure read only PR x pressure hPa Internal flash memory read only ME 7 ME This function returns the size of internal flash memory in format 7 ME FlashMB Load setup write only LS 7 LS setup_nam...

Page 226: ...l level and it returns the following sequence of characters 7 SL Power off write only PO This function powers off the instrument Clear RT60 averaging write only AC 7 AC This function clears the RT60 averaging and returns the following sequence of characters 7 AC Last logger name read only LB 7 LB This function returns the name of last logger in format 7 LB logger_name Last wave name read only LW 7...

Page 227: ...rection in Rx rain flag 0 or 1 Nx x rain intensity mm h Send screen read only SP 7 SP x where x 1 function returns the screen settings 2 function returns the color palette 3 function returns the screen status External cable connection read only PC 0 disconnected 1 connected Alarm read only AL 7 AL This function returns the alarm status in the format 7 AL curr_level text alarm_level where curr_leve...

Page 228: ...de fraction of seconds Lodir Longitude direction E east W west Start the measurement without data recording ST 7 ST This function start the measurement without logging and wave recording Time from last GPS synchronization GL 7 GL This function returns the time from last GPS synchronization Battery voltage BV 7 BV This function returns the battery voltage USB voltage UV 7 UV This function returns t...

Page 229: ...ers placed in the respective blocks of parameters The following chapters describe the structure of each block B 1 DESCRIPTION OF BLOCKS OF PARAMETERS Table B 1 1 File header Word number Name Comment 0 2 SvanPC text SvanPC 3 001Ah value 001Ah 4 15 reserved Table B 1 2 File information Word number Name Comment 0 0nn01h 01h block identifier 0nnh block length in words 1 4 FileName file name 8 ASCII ch...

Page 230: ...ion Pre parameter important only for the performed calibration 3 PreCalibrTime hour of the calibration Pre parameter important only for the performed calibration 4 PreCalibrFactor calibration Pre factor in 0 01 dB format parameter important only for the performed calibration reserved Table B 1 5 User s text Word number Name Comment 0 0nn03h 03h block identifier 0nnh block length in words 1 TitleTe...

Page 231: ...pCycle number of measurement cycles zero means infinity the parameter is important if the duration of the measurement cycle IntTimeSec is finite for infinite measuring cycle time this parameter is irrelevant see SplitCycles 9 NofProf number of measurement profiles 10 StartDelay measurement start delay in seconds 11 12 IntTimeSec duration of one measurement cycle in seconds zero means infinity 13 S...

Page 232: ...to 1nm s for sound measurement mode Second Rolling Leq s score in seconds 20 RefDil for vibration measurement mode value of reference vibration displacement at 0 01dB relative to 1pm for sound measurement mode reserved value 21 RPM_On rotation measurement mode 0 disabled 1 enabled 22 RPM_Pulse Number of pulses per rotation 23 Widscreen windscreen only for sound measurement mode 0 measurement witho...

Page 233: ...rt time in milliseconds 37 SplitCycles number of split measurement files zero means infinity the parameter is important if the duration of the measurement cycle IntTimeSec is set to infinity for finite measuring cycle times this parameter is irrelevant see RepCycle reserved Table B 1 8 Measurement triggering parameters Word number Name Comment 0 0nn2Bh 2Bh block identifier 0nnh block length in wor...

Page 234: ...occurred 6 TriggerPost number of records logged after trigger condition disappears reserved Table B 1 10 Reserved block Word number Name Comment 0 0nn31h 31h block identifier 0nnh block length in words reserved Table B 1 11 Waveform signal registration wave recording Word number Name Comment 0 0nn2Dh 2Dh block identifier 0nnh block length in words 1 RecordingMode recording mode 0 no recording 1 co...

Page 235: ...e in 10 Hz format 10 RecTime maximum recording time in seconds zero means no registration time limit parameter relevant only for recording with triggering 11 RecFilter measurement filter for the recorded signal 0 HP 1 Z 2 A 3 C 5 B 12 BitsPerSample number of bits per sample 13 TriggerOnMarker marker triggering parameter relevant only to triggering mode 0 disabled 1 enabled reserved Table B 1 12 Pa...

Page 236: ...nt only to alarm function in digital output mode 7 Polarisation Slope polarity of external triggering pulse parameter relevant only to instantaneous triggering pulse function 0 positive polarity 1 negative polarity active slope of external triggering pulse essential for out of range performance 0 active positive slope 1 active negative slope reserved Table B 1 13 Main block of profile parameters W...

Page 237: ...nt detector 1 125 ms time constant detector 2 200 ms time constant detector 3 500 ms time constant detector 4 1 s time constant detector 5 2 s time constant detector 6 5 s time constant detector 7 10 s time constant detector type of exponential detector in sound measurement mode 0 Impulse 1 Fast 2 Slow 2 Filter measurement filter in vibration measurement mode 3 R3 2 R2 1 R1 0 HP 1 HP1 2 HP3 3 HP10...

Page 238: ...wpass filter 2 bandpass filter 2 Order 1 order of the first filter 3 4 LowPole 1 low pole of the first filter in 10mHz format parameter not relevant to low pass filter 5 6 HighPole 1 high pole of the first filter in 10 mHz format parameter not relevant to the upper pass filter second filter parameters third filter parameters reserved Table B 1 16 Marker parameters Word number Name Comment 0 0043h ...

Page 239: ...Name Comment 0 0nn0Ah 0Ah block identifier 0nnh block length in words 1 N number of statistical class histogram 2 BottomClass first class histogram in 0 01 dB format 3 ClassWidth class histogram width in 0 01 dB format reserved Table B 1 19 Octave and partial octave spectra analysis Word number Name Comment 0 004Ah 4Ah block identifier 1 BlockLength block length in words 2 reserved 3 SystemBase fi...

Page 240: ...ential detector Fast 2 exponential detector Slow 10 Band frequency range 0 full band Full 1 audible band Audio reserved Table B 1 20 Parameters of 1 1 and 1 3 octave spectra histograms Word number Name Comment 0 0nn13h 13h block identifier 0nnh block length in words 1 N number of histograms spectra bands and total results 2 NofClasses number of statistical histogram classes 3 BottomClass first cla...

Page 241: ... WindowFactor window correction factor in 0 01 dB format 15 Averaging type of averaging 0 linear averaging 1 exponential averaging 16 TimeConst time averaging constant in milliseconds exponential averaging only 17 Filter spectrum measurement filter 0 HP 1 Z 2 A 3 C 5 B 18 InstFreq frequency of instantaneous spectra counting reserved Table B 1 22 Reverberation time analysis parameters RT60 Word num...

Page 242: ...t number of defined events Events 3 10 EventName 1 name of the first event 16 ASCII symbols 11 reserved 12 EventType 1 type of the first event 0 block event 1 point event parameters of the following events reserved Table B 1 24 STIPA parameters Word number Name Comment 0 0063h 63h block identifier 1 BlockLength block length in words 2 Standard standard 0 IEC 60268 16x2 1 IEC 60268 16x3 3 Averaging...

Page 243: ...aryRes number of records saved as the summary results reserved B 2 DESCRIPTION OF LOGGER S DATA BLOCKS The logger consists of data records of basic results that are recorded with a fixed logger step see Table B 1 23 Ts and Tms parameters and various additional information blocks markers Markers contain information about events that occurred during the registration process as well as additional mea...

Page 244: ...e number of profiles comes from the corresponding parameter in the main parameter block see Table B 1 12 the word 00nxxh ResRPM 2 lowest and highest word of the RPM measurement result value result is available if the RPM measurement is enabled see the word RPM_On in the measurement parameter block Table B 1 7 value of the result is calculated according to the formulas given in the comment of the R...

Page 245: ...ber Name Comment 0 0B0nnh 0B0h ID of the first word of the block 0nnh first the lowest byte of the parameter 1 0B1xxh 0B1h ID of the second word of the block 0xxh second byte of the parameter 2 0B2yyh 0B0h ID of the third word of the block 0yyh third byte of the parameter 3 0B3zzh 0B3h identifier of the fourth last word of the block 0zzh forth last byte of the parameter value 0zzyyxxnnh specifies ...

Page 246: ...asurement result in the format 0 1 m s 8 WindDirection wind direction in degrees for maximum wind speed if the parameter value is equal to 0FFFFh the direction is undefined 9 MaxWindSpeed maximum wind speed measurement result in the format 0 1 m s reserved 0nnnnh block length in words 0CF04h 0CF04h block end identifier Table B 2 8 Block of marker for meteorological rainfall calculated with the log...

Page 247: ... the state of the first event the next one the second event and so on set bit indicates that the event is active cleared bit indicates that the event is inactive number of available events and the type block or point are defined in the corresponding block of parameters see Table B 1 23 2 AlarmEventState block event state bit mask each bit specifies the state of one event the lowest bit defines the...

Page 248: ...eserved markers Word number Name Comment 0 0C7kkh 0C7kkh block start identifier 0kkh is an additional number from 0 to 127 identifying the block 1 0nnnnh block length in words 2 reserved 0nnnnh block length in words 0CFkkh 0CFkkh block end identifier 0kkh is an additional number from 0 to 127 identifying the block B 3 DESCRIPTION OF CYCLICAL RESULTS BLOCKS SUMMARY RESULTS Table B 3 1 Block of coun...

Page 249: ...for vibration measurement mode or SEL value in 0 01 dB format for sound measurement mode 5 Max value of the Max result in the format 0 01 dB 6 Reserved Min value reserved for vibration measurement mode or Min value in 0 01 dB format for sound measurement mode 7 Reserved Spl value reserved for vibration measurement mode or Spl value in 0 01 dB format for sound measurement mode 8 RMS Leq RMS value i...

Page 250: ...urement mode 18 Reserved SD value reserved for the vibration measurement mode or SD result value in the format 0 01 dB for the sound measurement mode reserved Table B 3 4 Statistical analysis results only for sound measurement mode Word number Name Comment 0 0nn17h 17h block identifier 0nnh block length in words 1 00pxxh p number of profiles 0xxh profile bit mask bit mask informs about which profi...

Page 251: ...T result 5 6 RMIN lower and higher word of the minimum value of the rpm measured during the measurement cycle the value of the result is calculated according to the formulas given in the comment of the ROT result reserved Table B 3 6 Loudness measurement results Word number Name Comment 0 001Eh 1Eh block identifier 1 BlockLength block length in words 2 OverloadFlags overload flags bit 0 level 130 ...

Page 252: ...lt 1 value of the first result in the format 0 01 dB 6 Result 2 value of the second result in the format 0 01 dB Result N T 1 value of the penultimate result in the format 0 01 dB Result N T value of the last result in the format 0 01 number of spectral lines and the number of aggregate results are determined in the corresponding FFT analysis block of results see Table B 1 21 reserved Table B 3 9 ...

Page 253: ...at the beginning of the measurement cycle 35h GPS measurement results at the end of the measurement cycle 0nnh block length in words 1 Quality GPS signal quality 0 no signal 1 FIX 2 FIX DIF 2 TimeSec value of seconds of real time clock 3 TimeMin value of minutes of real time clock 4 TimeHour value of hours of real time clock 5 DateDay day number 6 DateMonth month number 7 DateYear year number 8 La...

Page 254: ...rees for maximum wind speed if the parameter value is equal to 0FFFFh the direction is undefined 12 MaxWindSpeed maximum wind speed measurement result in the format 0 1 m s 13 14 WindDirTotalPuffs number of wind measurement samples 15 N number of directions of wind direction distribution 16 WindDir N wind direction distribution table values in the format 0 1 16 N M number of directions of measurem...

Page 255: ...he format 0 01 dB i 5 2 Err1 i m f1 error flag for the next frequency 0 1 i 5 3 Mf1 i m f1 result value for the next frequency in the format 0 01 i 5 4 Err2 i m f2 error flag for the next frequency 0 1 i 5 5 Mf2 i m f2 result value for the next frequency in the format 0 01 N 5 6 Flags bit 0 underrange flag bit 1 overload flag N 5 7 STI Measured STI result not considering Ambient Noise reserved Tab...

Page 256: ... 1 in the instantaneous results block reserved value in the averaged results block number of RT20 averaged results for the first frequency 14 N_RT30 1 in the instantaneous results block reserved value in the averaged results block number of RT30 averaged results for the first frequency 15 N_RTuser 1 in the instantaneous results block reserved value in the averaged results block number of RTuser av...

Page 257: ...nstantaneous results block reserved value in the averaged results block number of averaged RTuser results for the next frequency reserved B 4 DATE AND TIME EXAMPLE DECODING PROCEDURE Following function written in C explain how the date and time are coded void ExtractDateTime int date unsigned int time int dt dt 0 time 30 sec dt 1 time 30 60 min dt 2 time 1800 hour dt 3 date 0x001F day dt 4 date 5 ...

Page 258: ...nt set SC 59 Output cable for I O connector LEMO to 2 x BNC SC 16 USB 1 1 cable SA 22 Windscreen Accessories available SV 55 RS 232 interface for SVAN 95x 97x instrument series SC 93 Extension cable Lemo 7 plug to Lemo 7 socket SA 08 microphone preamplifier holder gooseneck SA 15 Power supply unit SA 17A External battery pack SA 279 Outdoor microphone kit waterproof Measured quantities The measure...

Page 259: ...e Windscreen position must be On Note Installation of the SC 93 preamplifier extension cable is automatically detected by the instrument When SC 93 is installed the case compensation filter is switching off Periodical test upper frequency 8 kHz Linear Operating Ranges Two measurement ranges are available LOW and HIGH The starting point at which tests of level linearity shall begin is 94 0 dB for t...

Page 260: ...is the upper limit for the sinusoidal signal Example For the crest factor n 10 the upper limit is A10 120 dB Measurement ranges Reference measurement range of the acoustic pressure High Measurement frequency range of the acoustic pressure 3 dB 3 15 Hz 20 000 Hz Basic measurement error of the acoustic pressure 0 7 dB measured for the reference conditions see below Weighting filters see part C 3 Z m...

Page 261: ...t ranges of SVAN 979 Please check the below given specification Linear operating ranges for LEQ measurements with Diffuse Filter Table C 1 4 Linear operating range for the Diffuse filter LOW for the sinusoidal signal and microphone sensitivity 50 mV Pa dB LAS F LBS F LCS F LZS F LAeqT LBeqT LCeqT LAE LCpeak tint 2 s from to from to from to from to from to from to from to from to from to 31 5 Hz 23...

Page 262: ...Hz band Overload detector The instrument has the built in overload detectors The overload in the measurement channel in its analogue part and the overload of the analogue digital converter are both detected The overload indication is when the input signal amplitude is 0 5 dB above the declared Peak measurement range Underrange detector The instrument has the built in underrange detector The underr...

Page 263: ...A S 40AE prepolarized free field condenser microphone Nominal sensitivity 50 mV Pa corresponding to 26 dBV Pa re 1 V Pa Capacitance 17 pF Note Maximum level of sound pressure level which can be affect the microphone without destruction the microphone 148 dB Table C 1 6 G R A S 40AE free field correction for electrostatic actuator the 0 deg incidence Correction factors dB Frequency Hz 20 25 31 5 40...

Page 264: ...ary Environmental electrostatic and radio frequency criteria Effect of humidity 0 5 dB for 30 RH 90 at 40 C and 1000 Hz Effect of magnetic field 15 dB A or 25 dB Z for 80 A m and 50 Hz Effect of radio frequency fields 0 5 dB 74 dB and 10V m electromagnetic field The greatest susceptibility the least immunity is achieved when in the SLM the Z filter and time weighting F are selected and the SPL mea...

Page 265: ...ear operation range to 65dB for the frequency weighting A Test conditions SVAN 979 with microphone and preamplifier is mounted on the shaker Ref 1 Vibration is applied in a direction perpendicular to the plane of the microphone diaphragm Ref 2 Vibration is applied in a direction parallel to the plane of the microphone diaphragm Table C 1 7 Typical effect of vibration perpendicular to the plane of ...

Page 266: ... 89 0 43 0 07 281 84 0 03 0 01 2585 23 0 40 0 03 290 07 0 03 0 01 2660 73 0 14 0 01 298 54 0 02 0 01 2738 42 0 19 0 12 307 26 0 02 0 04 2818 38 0 38 0 11 316 23 0 00 0 04 2900 68 0 35 0 04 325 46 0 00 0 02 2985 38 0 22 0 04 334 97 0 01 0 01 3072 56 0 22 0 11 344 75 0 01 0 00 3162 28 0 30 0 06 354 81 0 02 0 03 3254 62 0 41 0 05 365 17 0 03 0 06 3349 65 0 40 0 16 375 84 0 03 0 08 3447 47 0 12 0 14 3...

Page 267: ... 0 11 0 09 7498 94 0 37 0 13 841 40 0 10 0 07 7717 92 0 25 0 24 865 96 0 08 0 10 7943 28 0 08 0 11 891 25 0 08 0 10 8175 23 0 17 0 19 917 28 0 08 0 09 8413 95 0 27 0 18 944 06 0 10 0 05 8659 64 0 25 0 08 977 63 0 10 0 01 8912 51 0 19 0 18 1000 00 0 11 0 06 9172 76 0 04 0 14 1029 20 0 07 0 09 9440 61 0 04 0 15 1059 25 0 04 0 03 9776 28 0 12 0 20 1090 18 0 04 0 13 10000 00 0 33 0 34 1122 02 0 02 0 2...

Page 268: ...mpensated free field response dB 1938 65 0 12 0 15 17782 79 0 46 0 51 1995 26 0 11 0 17 18302 06 0 61 0 51 2053 53 0 13 0 14 18836 49 0 80 0 09 2113 49 0 19 0 05 19386 53 0 79 0 62 2175 20 0 23 0 05 19952 62 1 00 0 94 2238 72 0 23 0 06 Case effect Effect of reflections and diffraction of the acoustic plane wave from the case of SVAN 979 case effect Case Effect Compensation Filter ...

Page 269: ...0 05 3868 12 0 27 0 01 434 01 0 02 0 03 3981 07 0 16 0 09 446 68 0 04 0 02 4097 32 0 04 0 02 459 73 0 04 0 03 4216 97 0 05 0 19 473 15 0 02 0 01 4340 10 0 11 0 00 486 97 0 01 0 05 4466 84 0 26 0 03 501 19 0 00 0 07 4597 27 0 09 0 11 515 82 0 00 0 06 4731 51 0 08 0 12 530 88 0 01 0 06 4869 68 0 41 0 01 546 39 0 03 0 08 5011 87 0 29 0 12 562 34 0 06 0 07 5158 22 0 16 0 00 578 76 0 08 0 04 5308 84 0 ...

Page 270: ... 12956 87 0 19 0 00 1453 78 0 26 0 03 13335 21 0 15 0 05 1496 24 0 27 0 07 13724 61 0 43 0 06 1539 93 0 21 0 05 14125 38 0 05 0 28 1584 89 0 08 0 11 14537 84 0 11 0 06 1631 17 0 04 0 08 14962 36 0 44 0 04 1678 80 0 21 0 01 15399 27 0 22 0 06 1727 83 0 30 0 01 15848 93 0 14 0 00 1778 28 0 37 0 07 16311 73 0 08 0 01 1830 21 0 35 0 02 16788 04 0 15 0 06 1883 65 0 28 0 06 17278 26 0 21 0 06 1938 65 0 ...

Page 271: ...271 SVAN 979 User Manual Appendixes The round charts show the directional characteristic and the charts below shows the errors for angles 250 Hz 315 Hz ...

Page 272: ...272 SVAN 979 User Manual Appendixes 400 Hz 500 Hz 630 Hz 800 Hz 1000 Hz 1250 Hz ...

Page 273: ...273 SVAN 979 User Manual Appendixes 1600 Hz 2000 Hz 2240 Hz 2500 Hz 2800 Hz 3150 Hz ...

Page 274: ...274 SVAN 979 User Manual Appendixes 3550 Hz 4000 Hz 4500 Hz 5000 Hz 5600 Hz 6300 Hz ...

Page 275: ...275 SVAN 979 User Manual Appendixes 7100 Hz 8000 Hz 8500 Hz 9000 Hz 9500 Hz 10000 Hz ...

Page 276: ...5 0 16 400 0 00 0 00 0 01 0 01 0 02 0 02 0 03 0 03 0 03 500 0 00 0 00 0 01 0 01 0 03 0 03 0 04 0 05 0 07 630 0 00 0 01 0 01 0 01 0 01 0 01 0 01 0 00 0 00 800 0 00 0 00 0 01 0 02 0 03 0 04 0 05 0 06 0 06 1000 0 00 0 01 0 01 0 02 0 03 0 04 0 06 0 08 0 11 1250 0 00 0 02 0 03 0 07 0 10 0 13 0 15 0 18 0 18 1600 0 00 0 01 0 02 0 03 0 06 0 06 0 06 0 05 0 09 2000 0 00 0 00 0 02 0 03 0 08 0 10 0 16 0 20 0 ...

Page 277: ...1 500 0 08 0 10 0 11 0 13 0 14 0 16 0 18 0 21 0 23 630 0 02 0 03 0 05 0 05 0 06 0 06 0 06 0 06 0 04 800 0 06 0 06 0 05 0 03 0 03 0 05 0 09 0 11 0 13 1000 0 13 0 19 0 20 0 23 0 24 0 24 0 22 0 19 0 14 1250 0 19 0 18 0 18 0 17 0 19 0 21 0 24 0 25 0 24 1600 0 18 0 38 0 59 0 67 0 71 0 73 0 73 0 69 0 70 2000 0 21 0 16 0 10 0 03 0 22 0 38 0 74 0 84 0 88 2240 0 26 0 28 0 28 0 24 0 18 0 05 0 10 0 42 0 60 2...

Page 278: ...3 36 2 68 2 93 3 65 3 49 2 92 3 02 4 01 8000 2 94 4 16 4 16 3 40 3 98 4 67 4 33 3 89 4 33 8500 2 99 4 12 4 43 4 43 3 85 4 65 4 65 3 80 3 94 9000 4 17 3 51 5 09 5 09 4 37 5 10 5 57 4 82 4 78 9500 4 72 4 14 5 25 5 25 4 24 5 12 5 61 5 18 4 82 10000 5 38 5 38 4 86 6 13 6 13 4 99 6 11 6 08 5 33 10600 4 20 5 55 5 55 5 99 6 12 4 95 6 28 6 28 5 51 11200 5 09 5 90 6 22 5 38 7 09 6 38 5 83 7 15 6 56 11800 5...

Page 279: ... 04 0 05 0 05 0 07 0 09 0 11 0 11 800 0 03 0 03 0 03 0 03 0 02 0 02 0 03 0 05 0 07 1000 0 27 0 27 0 30 0 33 0 37 0 40 0 47 0 49 0 52 1250 0 18 0 18 0 17 0 12 0 08 0 07 0 12 0 21 0 24 1600 0 68 0 66 0 70 0 80 0 87 1 01 1 07 1 10 1 10 2000 0 47 0 48 0 53 0 69 0 80 0 98 1 05 1 05 0 98 2240 0 08 0 07 0 18 0 40 0 53 0 76 0 81 0 81 0 69 2500 0 94 0 92 1 06 1 17 1 48 1 61 1 70 1 69 1 40 2800 0 05 0 09 0 ...

Page 280: ...5 3 97 4 22 3 54 3 12 3 40 3 97 3 59 3 02 8000 4 49 5 07 5 30 4 38 4 05 4 77 4 74 4 03 4 12 8500 4 61 5 21 4 43 4 01 4 72 4 93 4 26 3 60 4 55 9000 5 32 6 20 5 76 4 86 5 75 5 75 5 16 5 16 5 25 9500 6 02 6 02 5 19 5 24 5 86 5 39 5 18 5 40 4 47 10000 6 55 6 09 5 52 6 05 6 31 6 31 5 36 6 14 5 26 10600 6 66 6 66 5 62 6 76 6 76 5 56 6 44 6 44 4 96 11200 7 01 6 83 6 08 6 77 6 88 6 58 6 58 6 58 6 08 11800...

Page 281: ... 11 0 09 0 08 0 05 0 05 0 04 0 03 800 0 02 0 03 0 03 0 03 0 03 0 02 0 02 0 01 0 01 1000 0 23 0 19 0 17 0 12 0 11 0 08 0 06 0 04 0 03 1250 0 24 0 24 0 24 0 21 0 18 0 16 0 11 0 08 0 04 1600 0 30 0 19 0 05 0 09 0 13 0 13 0 11 0 10 0 06 2000 0 11 0 16 0 20 0 20 0 19 0 16 0 10 0 08 0 06 2240 0 20 0 17 0 11 0 09 0 09 0 09 0 08 0 07 0 03 2500 0 99 1 00 1 00 0 89 0 79 0 53 0 40 0 21 0 14 2800 0 03 0 36 0 ...

Page 282: ...s C 1 2 Effect of the SA 22 windscreen Note When using windscreen SA22 the Windscreen compensation filter must be On to ensure good tolerances margin of the SVAN 979 frequency response SA22 free field compensation filter characteristic ...

Page 283: ... 3868 12 0 18 0 00 434 01 0 01 0 01 3981 07 0 17 0 11 446 68 0 01 0 02 4097 32 0 16 0 06 459 73 0 00 0 04 4216 97 0 17 0 23 473 15 0 00 0 01 4340 10 0 19 0 03 486 97 0 01 0 06 4466 84 0 21 0 01 501 19 0 01 0 08 4597 27 0 24 0 11 515 82 0 02 0 08 4731 51 0 27 0 14 530 88 0 03 0 09 4869 68 0 30 0 03 546 39 0 03 0 11 5011 87 0 31 0 09 562 34 0 04 0 12 5158 22 0 31 0 01 578 76 0 04 0 10 5308 84 0 30 0...

Page 284: ... 78 0 35 0 40 13335 21 0 55 0 35 1496 24 0 36 0 60 13724 61 0 57 0 29 1539 93 0 37 0 58 14125 38 0 56 0 49 1584 89 0 38 0 66 14537 84 0 59 0 23 1631 17 0 38 0 64 14962 36 0 61 0 18 1678 80 0 39 0 55 15399 27 0 65 0 03 1727 83 0 40 0 54 15848 93 0 67 0 06 1778 28 0 41 0 45 16311 73 0 70 0 01 1830 21 0 41 0 53 16788 04 0 77 0 32 1883 65 0 42 0 56 17278 26 0 79 0 42 1938 65 0 43 0 58 17782 79 0 88 1 ...

Page 285: ...field Thus using the tripod and the gooseneck SA 08 is strongly recommended SVAN 979 free field response with extension cable 5 00 0 00 5 00 10 0 100 0 1000 0 10000 0 100000 0 Frequency Hz R e s p o n s e dB SV17 frequency response with 1 2 microphone 10 V output 0 5 0 4 0 3 0 2 0 1 0 0 1 0 8 1 1 25 1 6 2 2 5 3 15 4 5 6 3 8 10 12 5 16 20 25 31 5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 ...

Page 286: ...07 0 07 800 0 0 01 0 02 0 04 0 05 0 07 0 09 0 09 0 11 1000 0 0 02 0 05 0 1 0 14 0 17 0 21 0 24 0 26 1250 0 0 01 0 02 0 02 0 02 0 01 0 01 0 02 0 05 1600 0 0 0 02 0 06 0 07 0 07 0 07 0 04 0 09 2000 0 0 04 0 06 0 07 0 06 0 05 0 11 0 15 0 22 2240 0 0 01 0 01 0 03 0 06 0 15 0 19 0 19 0 2 2500 0 0 01 0 02 0 02 0 03 0 02 0 03 0 12 0 26 2800 0 0 01 0 03 0 04 0 05 0 08 0 13 0 13 0 1 3150 0 0 01 0 12 0 23 0...

Page 287: ... 0 52 0 68 3150 0 36 0 31 0 36 0 59 0 74 0 8 0 92 0 98 0 98 3550 0 92 1 02 1 04 1 01 0 86 0 84 1 02 1 42 1 62 4000 0 13 0 12 0 51 0 81 0 87 0 75 0 47 0 88 1 18 4500 1 39 1 32 1 23 1 04 1 35 1 7 2 06 2 01 1 84 5000 0 06 0 31 0 6 1 07 1 09 0 75 0 95 1 74 2 5600 0 91 0 8 0 69 0 63 1 39 1 77 1 79 1 31 1 18 6300 0 8 1 32 1 79 2 16 1 75 2 08 2 93 2 43 2 32 7100 1 28 1 26 1 03 1 62 2 3 2 02 1 56 2 65 2 9...

Page 288: ...04 0 04 0 04 0 04 400 0 07 0 07 0 07 0 07 0 07 0 07 0 06 0 07 0 07 500 0 13 0 15 0 16 0 16 0 17 0 18 0 19 0 19 0 19 630 0 24 0 23 0 23 0 22 0 21 0 21 0 2 0 2 0 2 800 0 33 0 32 0 28 0 24 0 22 0 19 0 16 0 14 0 14 1000 0 25 0 2 0 16 0 14 0 11 0 09 0 08 0 08 0 08 1250 0 23 0 24 0 25 0 25 0 25 0 25 0 25 0 24 0 24 1600 0 48 0 38 0 26 0 15 0 05 0 07 0 11 0 13 0 14 2000 0 26 0 24 0 19 0 15 0 13 0 08 0 05 ...

Page 289: ...0 2 79 3 27 3 58 3 91 3 85 3 24 3 1 3 76 4 01 8500 3 68 4 1 4 38 4 73 4 59 3 97 4 14 4 93 4 93 9000 3 36 3 65 4 33 4 62 4 83 4 44 4 33 4 82 5 06 9500 4 33 3 92 3 76 4 14 4 78 5 26 4 72 4 29 5 49 10000 4 39 4 68 5 4 5 59 5 2 4 92 5 77 5 94 5 37 10600 5 15 5 16 5 72 6 61 6 85 6 38 5 97 6 89 7 36 11200 5 29 5 68 6 51 6 99 6 16 6 01 7 32 6 66 6 86 11800 6 51 6 7 7 5 8 01 7 73 7 18 8 34 8 42 7 61 12500...

Page 290: ...0 06 0 04 0 01 1600 0 12 0 18 0 45 0 69 0 78 0 84 0 8 0 62 0 36 2000 0 54 0 6 0 61 0 6 0 58 0 57 0 57 0 56 0 52 2240 0 78 0 73 0 68 0 59 0 55 0 57 0 59 0 58 0 49 2500 0 53 0 39 0 33 0 34 0 37 0 44 0 45 0 39 0 33 2800 0 37 0 47 0 58 0 6 0 59 0 51 0 4 0 24 0 16 3150 0 78 0 81 0 81 0 78 0 76 0 64 0 54 0 4 0 44 3550 1 44 1 48 1 37 0 92 0 75 0 89 1 05 1 12 0 98 4000 0 98 0 39 0 42 0 67 0 7 0 65 0 36 0 ...

Page 291: ...02 0 02 0 1 0 11 0 07 4500 1 36 1 27 1 0 69 0 53 0 13 0 03 0 05 0 01 5000 0 09 0 17 0 42 0 49 0 49 0 46 0 37 0 3 0 12 5600 0 83 0 49 0 24 0 33 0 36 0 29 0 2 0 15 0 1 6300 0 94 1 17 1 24 1 17 0 88 0 71 0 37 0 24 0 1 7100 0 52 0 22 0 1 0 37 0 49 0 44 0 35 0 19 0 03 8000 1 3 0 96 0 23 0 13 0 19 0 13 0 01 0 04 0 01 8500 0 98 0 86 1 05 1 02 0 93 0 49 0 24 0 14 0 03 9000 1 13 1 11 1 03 0 33 0 22 0 21 0 ...

Page 292: ...es The measured quantities in the vibration meter mode are RMS PEAK P P MAX and MTVV Definitions for mentioned parameters are given in Appendix D Mounting for vibration tests The accelerometer can be connected with the VLM using proper cable provided by the manufacturer The accelerometer can be mounted on the plate in various ways using threaded stud onto a flat smooth surface using thin layer of ...

Page 293: ...ms 2 100 0 dB to 352 ms 2 151 0 dB Linear measurement with the Vel1 filter from 0 002 ms 1 to 56 ms 1 the sinusoidal signal RMS from 0 02 ms 1 to 79 ms 1 PEAK Table C 2 3 Linear operating ranges with the Vel1 filter Range RMS Linear operating ranges RMS With the SV 80 10 mV ms 2 accelerometer sensitivity 79 58 Hz Measured at the reference environmental conditions LOW from 2 mms 1 to 15 9 ms 1 HIGH...

Page 294: ... from 100 um to 4 2 m PEAK Table C 2 7 Linear operating ranges with the Dil3 filter Range RMS Linear operating ranges RMS With the SV80 10 mV ms 2 accelerometer sensitivity 79 58 Hz Measured at the reference environmental conditions LOW from 10 m to 4 cm HIGH from 100 m to 300 cm Linear measurement with the Dil10 filter from 1 6 µm to 47 cm the sinusoidal signal RMS from 16 µm to 67 cm PEAK Table ...

Page 295: ...f the measured voltage Range LOW 1 VRMS 120 dB related to 1 µVRMS Range HIGH 7 VRMS 137 dB related to 1 µVRMS Maximum input voltage SVAN 979 is the instrument with the II security class according to the international standard IEC 348 The input voltage should be within the 30 V Peak Peak RMS detector Linear averaging Digital True RMS with Peak detection Resolution 0 1 dB Range 327 7 dB Crest Factor...

Page 296: ... this case much longer stabilization periods may be necessary Digital filters High pass filters HP filter see Chapter C 5 for the filter characteristics HP1 filter see Chapter C 5 for the filter characteristics HP3 filter see Chapter C 5 for the filter characteristics HP10 filter see Chapter C 5 for the filter characteristics Frequency weighting filters filter includes Band Limiting filter Conform...

Page 297: ...cy fields meets requirements of the ISO 8041 1 2017 The greatest susceptibility the least immunity is achieved when in the VLM the HP1 filter is selected and the RMS measurements are considered The greatest susceptibility is achieved when the VLM and accelerometer with cable is placed along field and the cable is coil as solenoid Effect of electrostatic discharge meets requirements of the ISO 8041...

Page 298: ...enu Instrument IEPE Current 1 5 mA as default Linear Operating Ranges Two measurement ranges are available LOW and HIGH Table C 3 1 Linear operating range Range Linear operating range with the error 0 8 dB RMS for the sinusoidal signal at reference conditions 1 kHz 0 0 dB calibration factor LOW from 10 μVRMS A weighting to 1 VRMS A weighting from 10 μVRMS C weighting to 1 VRMS C weighting from 20 ...

Page 299: ...emperature 20 C Reference relative humidity 65 Calibration electrical Calibration level 114 0 dB re 1μVRMS Basic accuracy 0 2 dB for the temperature T 23 C 5 C for sinusoidal signal 1 VRMS in the band 10 Hz 20 kHz with Z filter Measurement error in the full temperature range 0 1 dB when the temperature is from 10 C to 50 C for the sinusoidal signal 1 VRMS in the band 10 Hz 20 kHz with Z filter Ove...

Page 300: ...013 standard for the Class 1 Z filter See Chapter C 3 for the A C and Z filters characteristics Human Vibration frequency weighting filter including Band Limiting filter See part C 4 for the frequency response characteristics Wh from 0 8 Hz to 4000 Hz Integrating filters see part C 4 for the frequency response characteristics Vel1 from 0 2 Hz to 4100 Hz Vel3 from 0 2 Hz to 4100 Hz Vel10 from 0 2 H...

Page 301: ... the HP3 filter 4 µVRMS with the HP10 filter 4 µVRMS with the Wh filter 0 5 µVRMS with filter VelMF n a Range High with the HP filter 35 µVRMS with the HP1 filter 35 µVRMS with the HP3 filter 35 µVRMS with the HP10 filter 35 µVRMS with the Wh filter 4 3 µVRMS with filter VelMF n a Low pass filters 8 eighth order elliptic filters with the cut off frequencies from 10 kHz to 78 125 Hz in the binary s...

Page 302: ...302 SVAN 979 User Manual Appendixes 8 0 kHz 1 1 octave filter 4 0 kHz 1 1 octave filter 2 0 kHz 1 1 octave filter ...

Page 303: ...303 SVAN 979 User Manual Appendixes 1 0 kHz 1 1 octave filter 500 Hz 1 1 octave filter 250 Hz 1 1 octave filter ...

Page 304: ...304 SVAN 979 User Manual Appendixes 125 Hz 1 1 octave filter 63 0 Hz 1 1 octave filter 31 5 Hz 1 1 octave filter ...

Page 305: ...305 SVAN 979 User Manual Appendixes 16 0 Hz 1 1 octave filter 8 00 Hz 1 1 octave filter 4 00 Hz 1 1 octave filter ...

Page 306: ...306 SVAN 979 User Manual Appendixes 2 00 Hz 1 1 octave filter 1 00 Hz 1 1 octave filter Summary curve ...

Page 307: ...5 filters with centre frequencies from 0 8 Hz to 20 kHz base 10 meeting IEC 61260 1 2014 standard for Class 1 1 3 octave filters for 16 0 kHz 1 1 octave filter 1 3 octave filters for 8 0 kHz 1 1 octave filter 1 3 octave filters for 4 0 kHz 1 1 octave filter ...

Page 308: ...308 SVAN 979 User Manual Appendixes 1 3 octave filters for 2 0 kHz 1 1 octave filter 1 3 octave filters for 1 00 kHz 1 1 octave filter 1 3 octave filters for 500 Hz 1 1 octave filter ...

Page 309: ...309 SVAN 979 User Manual Appendixes 1 3 octave filters for 250 Hz 1 1 octave filter 1 3 octave filters for 125 Hz 1 1 octave filter 1 3 octave filters for 63 0 Hz 1 1 octave filter ...

Page 310: ...310 SVAN 979 User Manual Appendixes 1 3 octave filters for 31 5 Hz 1 1 octave filter 1 3 octave filters for 16 0 Hz 1 1 octave filter 1 3 octave filters for 8 00 Hz 1 1 octave filter ...

Page 311: ...311 SVAN 979 User Manual Appendixes 1 3 octave filters for 4 00 Hz 1 1 octave filter 1 3 octave filters for 2 00 Hz 1 1 octave filter 1 3 octave filters for 1 00 Hz 1 1 octave filter ...

Page 312: ...312 SVAN 979 User Manual Appendixes Summary curve ...

Page 313: ...l weighting filters implemented in sound modes A filter Class 1 according to the IEC 651 and IEC 61672 1 2013 standard A filter characteristics C filter Class 1 according to the IEC 651 and IEC 61672 1 2013 standard C filter characteristics Z filter Class 1 according to the IEC 61672 1 2013 standard Z filter characteristics ...

Page 314: ...314 SVAN 979 User Manual Appendixes G filter according to the ISO 7196 1995 standard G filter characteristics HP filter HP filter characteristic ...

Page 315: ...P1 filter is used for acceleration measurements vibration signal in the frequency range 1 Hz 20 kHz HP1 filter characteristics HP3 filter is used for acceleration measurements vibration signal in the frequency range 3 5 Hz 20 kHz HP3 filter characteristics HP10 filter is used for acceleration measurements vibration signal in the frequency range 10 Hz 20 kHz HP10 filter characteristics ...

Page 316: ... measurements vibration signal in the frequency range 1 Hz 20 kHz Vel1 filter characteristics Vel3 filter is used for velocity measurements vibration signal in the frequency range 3 5 Hz 20 kHz Vel3 filter characteristics Vel10 filter is used for velocity measurements vibration signal in the frequency range 10 Hz 20 kHz Vel10 filter characteristics ...

Page 317: ...e ISO 10816 standard VelMF filter characteristics C 4 2 3 Digital filters implemented in vibration modes for displacement measurements Dil1 filter is used for displacement measurements vibration signal in the frequency range 1 Hz 20 kHz Dil1 filter characteristics Dil3 filter is used for displacement measurements vibration signal in the frequency range 3 5 Hz 20 kHz Dil3 filter characteristics ...

Page 318: ... ISO 5349 Wh filter is used for assessment of influence of the vibration signal on the human body It conforms the ISO 5349 and ISO 8041 1 2017 standards Wh filter characteristics C 4 5 Digital Real Time Filters implemented in SVAN 979 Real Time Filters R1 R2 and R3 are the second order Butterworth s filters with the slope equal to 12 dB octave which are introduced by the user ENTER ENTER In the Rx...

Page 319: ...ich the amplitude of the input signal is attenuated two times Available values are from 100 Hz to 10 0 kHz Characteristics of the Lowpass filter with the HFC 3dB 125 Hz implemented in the instrument Characteristics of the Lowpass filter with the HFC 3dB 250 Hz implemented in the instrument Characteristics of the Lowpass filter with the HFC 3dB 500 Hz implemented in the instrument ...

Page 320: ... Lowpass filter with the HFC 3dB 1 00 kHz implemented in the instrument Characteristics of the Lowpass filter with the HFC 3dB 2 00 kHz implemented in the instrument Characteristics of the Lowpass filter with the HFC 3dB 4 00 kHz implemented in the instrument ...

Page 321: ...mine the LFC 3dB parameter which denotes the LFC Low Frequency Corner of the Rx filter at which the amplitude of the input signal is attenuated two times Available values are from 100 Hz to 10 0 kHz Characteristics of the Highpass filter with the LFC 3dB 125 Hz implemented in the instrument Characteristics of the Highpass filter with the LFC 3dB 250 Hz implemented in the instrument ...

Page 322: ... Highpass filter with the LFC 3dB 500 Hz implemented in the instrument Characteristics of the Highpass filter with the LFC 3dB 1 00 kHz implemented in the instrument Characteristics of the Highpass filter with the LFC 3dB 2 00 kHz implemented in the instrument ...

Page 323: ... 3dB parameters which denote frequencies of the Rx filter at which the amplitude of the input signal is attenuated two times Available values of both parameters are from 100 Hz to 10 0 kHz The Bandpass filter is implemented by the superposition of Lowpass and Highpass filters In order to implement a real band pass filter the LFC 3dB should be smaller than HFC 3dB If this condition is not fulfilled...

Page 324: ...4 SVAN 979 User Manual Appendixes Characteristics of the band pass filter with the LFC 3dB 125 Hz and HFC 3dB 4 00 kHz Characteristics of the band pass filter with the LFC 3dB 500 Hz and HFC 3dB 2 00 kHz ...

Page 325: ...pplied Kingston Industrial memory card has been tested by SVANTEK and cards of this type are strongly recommended for use when the original card is going to be replaced MicroSD contact pad assignment outer view Table C 5 1 Pin out of the MicroSD contact Pin No Name Description 1 DAT2 Data Line Bit 2 2 CD DAT3 Card Detect Data Line Bit 3 3 CMD Command Response 4 VDD Supply voltage 5 CLK Clock 6 VSS...

Page 326: ...e also powered from the AA Type rechargeable batteries Note For temperatures below 0 C operating time can decree depending on the batteries Note Using of the USB Flash Disk memory Stick will increase power consumption Maximum power consumption on the USB Host Port might be up top 150 mA In such a case battery operating time will be reduced to approx 6 hours Instrument can be also powered from the ...

Page 327: ...ard Supported USB disks up to 32 GB Serial Port socket external view Table C 5 5 Pin out of the Serial Port USB Host connector Pin number USB 1 Vbus 2 TxD 3 RxD 4 GND Shield Ground RS 232 interface optional The RS 232 interface option for SVAN 979 is provided by means of the SV 55 interface It conforms to the EIA Standard RS 232C It enables the user to program remotely all instrument functions and...

Page 328: ...D 1 not connected 2 RXD 3 3 TXD 2 4 DTR 6 connected to pin 4 5 GND 5 6 DSR 4 connected to pin 6 7 RTS 8 8 CTS 7 9 GND 9 not connected I O User programmable Analogue Outputs Digital Input Output connector LEMO type ENG0B302 outer view Table C 5 7 Pin out of the LEMO ENG0B302 Pin Number Function 1 GENERATOR Output 2 I O Input Output Chassis Ground The user may set up the I O mode in the screen Menu ...

Page 329: ...r voltage threshold level is set to 1 V b Trigger voltage slope path Menu Measurement Measurement Trigger set by the user as Slope uprising as default or Slope falling auxiliary c Minimal duration of the trigger impulse 10 μsec d 100 μsec release time after previous measurement is necessary before next trigger e Recommended trigger voltage should not exceed 5 V f Input impedance in the Digital In ...

Page 330: ...hone preamplifier Electromagnetic Compatibility EMC The product described above is compliant with the following EMC standards 1 For the EMC emissions specification a according to EN 61672 1 2013 applying test methods in accordance with EN 55032 2015 b according to EN ISO 8041 1 2017 Chapters 7 5 12 20 7 applying test methods in accordance with EN 55032 2015 2 For the EMC immunity specification a a...

Page 331: ...o provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does caus...

Page 332: ...round Nominal 70 pF Supply current 2 mA 10 mA Supply voltage 22 V 28 V Bias voltage 12 VDC Output impedance Nominal 50 Ω Charge discharge time constant start up time 1 sec typ Environmental Maximum vibration shock survival 50 000 ms 2 Peak Thermal sensitivity coefficient 0 07 o C F S Operating temperature range from 55 C to 120 C Operating temperature range recommended from 10 C to 50 C Humidity E...

Page 333: ...learn how to assemble and disassemble the microphone s outdoor protection Note Using SA 279 changes the frequency response and measurement ranges of SVAN 979 Please check the below given specification Depending on the measurement task SA 279 can be used in two operational modes 1 With reference incidence angle 90 deg so called environmental mode 2 With reference incidence angle 0 deg so called air...

Page 334: ...5 116 25 119 25 120 41 120 25 116 25 119 25 120 28 119 50 123 1 kHz 25 120 25 120 25 120 41 120 25 120 25 120 25 120 28 123 50 123 4 kHz 25 121 25 119 25 119 41 120 25 121 25 119 25 119 28 124 50 122 8 kHz 25 119 25 117 25 117 41 120 25 119 25 117 25 117 28 122 50 120 12 5 kHz 25 115 25 114 25 114 41 120 25 115 25 114 25 114 28 118 50 117 Table C 7 3 Linear operating range HIGH with the Environmen...

Page 335: ... Field response for 90 deg incidence angle 20 0 0 00 0 03 0 03 25 0 0 00 0 00 0 00 31 5 0 00 0 03 0 03 40 0 0 00 0 07 0 07 50 0 0 00 0 03 0 03 63 0 0 00 0 07 0 07 80 0 0 00 0 07 0 07 100 0 0 00 0 03 0 03 125 0 0 00 0 03 0 03 160 0 0 00 0 03 0 03 200 0 0 00 0 03 0 03 250 0 0 00 0 00 0 00 315 0 0 00 0 03 0 03 400 0 0 00 0 07 0 07 500 0 0 00 0 10 0 10 630 0 0 00 0 07 0 07 800 0 0 00 0 13 0 13 1000 0 ...

Page 336: ... 41 20000 0 0 83 10 50 11 33 Fee field frequency response of SVAN 979 with SA 279 90 deg incidence angle Table C 7 5 Free field frequency response of SVAN 979 with SA 279 90 deg incidence angle f Hz Typical non compensated frequency response of SVAN 979 with SA 279 for 90 deg incidence angle Compensation filter Environmental Typical compensated frequency response of SVAN 979 with SA279 for 90 deg ...

Page 337: ...9 473 15 0 07 0 10 0 03 486 97 0 02 0 10 0 08 501 19 0 00 0 11 0 11 515 82 0 12 0 11 0 01 530 88 0 26 0 12 0 14 546 39 0 18 0 12 0 06 562 34 0 00 0 13 0 13 578 76 0 05 0 13 0 08 595 66 0 22 0 14 0 08 613 06 0 24 0 15 0 09 630 96 0 13 0 15 0 02 649 38 0 14 0 16 0 02 668 34 0 25 0 17 0 08 687 86 0 25 0 17 0 08 707 95 0 19 0 18 0 01 728 62 0 17 0 19 0 02 749 89 0 21 0 20 0 01 771 79 0 26 0 21 0 05 79...

Page 338: ... 65 0 05 0 16 0 11 1995 26 0 10 0 10 0 20 2053 53 0 09 0 03 0 12 2113 49 0 11 0 05 0 06 2175 20 0 20 0 15 0 05 2238 72 0 24 0 25 0 01 2304 09 0 29 0 37 0 08 2371 37 0 32 0 49 0 17 2440 62 0 46 0 62 0 16 2511 89 0 51 0 76 0 25 2585 23 0 73 0 90 0 17 2660 73 1 01 1 04 0 03 2738 42 1 24 1 17 0 07 2818 38 1 48 1 30 0 18 2900 68 1 60 1 42 0 18 2985 38 1 78 1 52 0 26 3072 56 1 83 1 61 0 22 3162 28 1 53 ...

Page 339: ...7943 28 2 03 2 13 0 10 8175 23 1 92 2 07 0 15 8413 95 1 94 2 02 0 08 8659 64 1 87 2 02 0 15 8912 51 1 74 2 08 0 34 9172 76 1 90 2 16 0 26 9440 61 1 90 2 19 0 29 9716 28 2 19 2 16 0 03 10000 00 2 33 2 16 0 17 10292 01 2 23 2 26 0 03 10592 54 2 41 2 45 0 04 10901 84 2 48 2 63 0 15 11220 18 2 85 2 73 0 12 11547 82 3 20 2 81 0 39 11885 02 3 73 2 98 0 75 12232 07 3 93 3 19 0 74 12589 25 4 61 3 31 1 30 ...

Page 340: ...0 0 0 00 0 00 0 00 25 0 0 00 0 00 0 00 31 5 0 00 0 00 0 00 40 0 0 00 0 00 0 00 50 0 0 00 0 00 0 00 63 0 0 00 0 00 0 00 80 0 0 00 0 00 0 00 100 0 0 00 0 00 0 00 125 0 0 00 0 00 0 00 160 0 0 00 0 00 0 00 200 0 0 00 0 00 0 00 250 0 0 02 0 03 0 05 315 0 0 06 0 05 0 11 400 0 0 23 0 07 0 16 500 0 0 00 0 11 0 11 630 0 0 13 0 15 0 02 800 0 0 29 0 21 0 08 1000 0 0 28 0 28 0 00 1250 0 0 31 0 35 0 04 1600 0 ...

Page 341: ... from to 31 5 Hz 25 80 25 103 25 117 41 120 25 80 25 103 25 117 28 83 50 120 500 Hz 25 116 25 119 25 120 41 120 25 116 25 119 25 120 28 119 50 123 1 kHz 25 120 25 120 25 120 41 120 25 120 25 120 25 120 28 123 50 123 4 kHz 25 121 25 119 25 119 41 120 25 121 25 119 25 119 28 124 50 122 8 kHz 25 119 25 117 25 117 41 120 25 119 25 117 25 117 28 122 50 120 12 5 kHz 25 115 25 114 25 114 41 120 25 115 25...

Page 342: ...sated frequency response of SVAN 979 with SA279 for 0 deg incidence angle Airport 251 19 0 09 0 01 0 10 258 52 0 02 0 01 0 03 266 07 0 04 0 02 0 02 273 84 0 06 0 02 0 04 281 84 0 04 0 02 0 02 290 07 0 00 0 02 0 02 298 54 0 04 0 02 0 06 307 26 0 08 0 02 0 10 316 23 0 14 0 02 0 16 325 46 0 10 0 02 0 12 334 97 0 03 0 03 0 06 344 75 0 00 0 03 0 03 354 81 0 04 0 03 0 01 365 17 0 04 0 03 0 01 375 84 0 0...

Page 343: ... 0 14 0 07 687 86 0 18 0 15 0 03 707 95 0 18 0 17 0 01 728 62 0 25 0 18 0 07 749 89 0 30 0 19 0 11 771 79 0 35 0 21 0 14 794 33 0 38 0 22 0 16 817 52 0 33 0 24 0 09 841 40 0 31 0 25 0 06 865 96 0 39 0 27 0 12 891 25 0 41 0 29 0 12 917 28 0 44 0 31 0 13 944 06 0 40 0 33 0 07 971 63 0 42 0 35 0 07 1000 00 0 42 0 37 0 05 1029 20 0 42 0 39 0 03 1059 25 0 48 0 41 0 07 1090 18 0 40 0 44 0 04 1122 02 0 4...

Page 344: ...9 0 28 0 01 2660 73 0 06 0 28 0 22 2738 42 0 17 0 28 0 11 2818 38 0 20 0 28 0 08 2900 68 0 37 0 27 0 10 2985 38 0 39 0 24 0 15 3072 56 0 09 0 20 0 11 3162 28 0 16 0 15 0 31 3254 62 0 21 0 08 0 29 3349 65 0 01 0 01 0 02 3447 47 0 29 0 10 0 39 3548 13 0 09 0 20 0 29 3651 74 0 31 0 29 0 02 3758 37 0 57 0 38 0 19 3868 12 0 46 0 46 0 00 3981 07 0 31 0 52 0 21 4097 32 0 67 0 58 0 09 4216 97 0 89 0 63 0 ...

Page 345: ...0 07 9172 76 0 97 0 59 0 38 9440 61 1 06 0 78 0 28 9716 28 1 30 1 00 0 30 10000 00 1 39 1 19 0 20 10292 01 0 85 1 31 0 46 10592 54 1 12 1 36 0 24 10901 84 1 11 1 40 0 29 11220 18 1 04 1 49 0 45 11547 82 1 52 1 61 0 09 11885 02 1 87 1 68 0 19 12232 07 2 69 1 73 0 96 12589 25 3 30 1 85 1 45 12956 87 4 32 2 09 2 23 13335 21 3 79 2 36 1 43 13724 61 4 52 2 61 1 91 14125 38 5 08 2 88 2 20 14537 84 6 95 ...

Page 346: ...deg incidence angle Airport 20 0 0 00 0 00 0 00 25 0 0 00 0 00 0 00 31 5 0 00 0 00 0 00 40 0 0 10 0 00 0 10 50 0 0 10 0 00 0 10 63 0 0 10 0 00 0 10 80 0 0 10 0 00 0 10 100 0 0 10 0 00 0 10 125 0 0 10 0 00 0 10 160 0 0 10 0 00 0 10 200 0 0 10 0 00 0 10 250 0 0 09 0 01 0 10 315 0 0 14 0 02 0 16 400 0 0 17 0 04 0 13 500 0 0 00 0 07 0 07 630 0 0 14 0 12 0 02 800 0 0 30 0 22 0 08 1000 0 0 34 0 37 0 03 ...

Page 347: ...0 0 83 1 22 0 39 8000 0 0 44 0 21 0 23 10000 0 1 62 1 19 0 43 12500 0 4 22 1 85 2 37 16000 0 9 28 2 91 6 37 20000 0 12 82 1 33 11 49 Free Field Directional characteristics of SVAN 979 with SA 279 Directional response for SVAN 979 with microphone type G R A S 40AE preamplifier SV 17 and outdoor microphone kit SA 279 for specified frequencies Total directional characteristics The round charts show t...

Page 348: ...348 SVAN 979 User Manual Appendixes 250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz ...

Page 349: ...349 SVAN 979 User Manual Appendixes 1000 Hz 1250 Hz 1600 Hz 2000 Hz 2240 Hz 2500 Hz ...

Page 350: ...350 SVAN 979 User Manual Appendixes 2800 Hz 3150 Hz 3550 Hz 4000 Hz 4500 Hz 5000 Hz ...

Page 351: ...351 SVAN 979 User Manual Appendixes 5600 Hz 6300 Hz 7100 Hz 8000 Hz 8500 Hz 9000 Hz ...

Page 352: ...352 SVAN 979 User Manual Appendixes 9500 Hz 10000 Hz 10600 Hz 11200 Hz 11800 Hz 12500 Hz ...

Page 353: ... 2 60 7100 0 28 1 35 1 71 2 14 2 26 2 31 2 32 2 33 2 41 2 68 8000 0 59 1 55 2 45 2 72 3 15 3 19 2 87 2 88 2 67 2 90 8500 0 56 1 63 2 74 2 88 3 59 3 57 3 03 2 62 2 17 2 23 9000 0 29 1 44 2 01 2 84 3 41 3 68 3 53 3 30 3 03 2 46 9500 0 31 1 56 1 77 2 33 2 66 2 87 3 15 3 03 2 71 2 18 10000 0 16 1 04 2 16 2 42 2 91 3 06 3 29 3 08 2 73 2 29 10600 0 60 1 92 2 48 2 86 3 22 3 40 3 51 3 08 2 82 2 26 11200 0...

Page 354: ... 23 0 24 1250 0 72 0 75 0 64 0 67 0 71 0 60 0 39 0 52 0 52 0 59 1600 0 83 0 82 0 63 0 71 0 69 0 76 0 78 0 69 0 83 0 83 2000 1 22 1 21 1 04 1 19 1 13 1 01 1 12 1 16 1 22 1 18 2240 0 96 0 87 0 87 0 92 0 82 0 90 1 11 1 25 1 22 1 24 2500 0 68 0 59 0 73 0 72 1 10 1 10 1 26 1 26 1 43 1 35 2800 0 26 0 44 0 21 0 41 0 39 0 53 0 80 1 08 1 10 1 02 3150 0 61 0 84 0 54 0 73 0 18 0 40 0 92 1 26 1 33 1 33 3550 0...

Page 355: ... 0 46 0 08 3550 1 69 1 58 1 26 0 91 0 29 0 02 4000 1 75 1 61 1 23 0 89 0 40 0 11 4500 1 94 1 59 1 31 1 10 0 43 0 04 5000 2 00 1 76 1 40 0 87 0 41 0 36 5600 2 03 1 60 1 19 1 15 0 56 0 22 6300 2 10 1 96 2 00 1 75 1 46 0 38 7100 2 07 2 23 2 14 1 85 1 05 0 32 8000 3 41 3 46 3 08 2 91 1 99 1 16 8500 3 88 3 70 3 09 2 13 1 66 0 21 9000 3 72 3 55 3 01 2 49 1 90 0 65 9500 3 07 2 96 2 40 1 90 1 34 0 32 1000...

Page 356: ...ant in seconds for the giving time weighting Three time constant are available Slow 1000 ms Fast 125 ms Impulse 35 ms but on falling values a longer time constant of 1500 ms is applied W frequency weighting filter A C B Z U AU or LF t pW instantaneous frequency weighted sound pressure with the weighting filter W Sound pressure is expressed in pascals Pa t pW instantaneous frequency and time weight...

Page 357: ...weighted sound pressure level for the last second of the measurement 2 0 2 W 1 p t p max log 10 Spl T Lmax Maximal value of the time weighted sound pressure level for current time period of the measurement T The Max result for the 1 second period is equal to the value of the Spl result 2 0 2 W p t p max log 10 Max T Lmin Minimal value of the time weighted sound pressure level for current time peri...

Page 358: ...Lnn Statistical level is the certain boundary level surpassed by the temporary noise level values in not more than n of the observation period Example Let us assume that L35 is equal to 76 8 dB It means that during the measurements the noise level 76 8 dB was exceeded in not more than 35 of the observation period L den Only one result from Ld Le Ln Lde Len Lnd and Lden is available in the instrume...

Page 359: ... content of the noise NR is calculated if 1 1 Octave function is active To calculate the NR value the noise level in each 1 1 octave band from 31 5Hz to 8kHz is compared to the NR curves for each corresponding band The NR curve number which applies to each frequency band is the highest numerical value that is not exceeded in that band The overall NR value is the highest of the individual NR values...

Page 360: ...ous frequency weighted signal with the weighting filter W t aW instantaneous frequency and time weighted signal with the weighting filter W and time constant calculated from the equation t t d e a 1 t a 2 W W where variable of integration t v instantaneous vibration signal depends on the RMS Integration parameter Exp n Integratio RMS Lin n Integratio RMS t a t a t v W W D 2 2 Definitions and formu...

Page 361: ... where i t time intervals in which the noise level L L L t L k k occurs L so called class interval or distribution class of the series P total observation period In case when the class interval approaches infinity the probability of L t tends to the probability of k L In practice L value is strictly determined and it depends mainly on the dynamics of the measurements performed in the instrument Th...

Page 362: ...al cursor and find out the crossing point between the cumulative density function and the cursor In the instrument the user can determine 10 statistical levels from L01 to L99 1 step of observation period The display in the instrument presents only first statistical level N1 set to L01 up to L99 The statistical level LN value the profile s number the statistics are taken from the RMS detector Lin ...

Page 363: ...the size of the room and the nature of the materials used in its construction The graphs below present the reverberation time nature in the case when only one frequency is emitted Fig 1 The acoustic pressure versus time a and the value of the sound pressure level versus time so called decay curve b The marker t1 indicates the moment when the sound source was switched off From this moment the acous...

Page 364: ...he EDT decay curve region is pointed out by markers t1 and t3 cf Fig 2 It is checked whether the selected decay curve region has proper dynamics for the EDT calculation L1 L2 10 dB L2 L3 noise margin It is recommended by the ISO 3382 standard to set 10 dB value for noise margin In case of the impulse method the sound pressure level values between points t1 with L1 level and t2 with L2 are approxim...

Page 365: ...curve region is pointed out by markers t1 and t4 cf Fig 4 It is checked whether the selected decay curve region has proper dynamics to the RT 30 calculation L1 L4 5 30 dB noise margin It is recommended by the ISO 3382 standard to set 10 dB value for noise margin In case of the impulse method the sound pressure level values between points t2 and t3 are approximated with the straight line y a x b by...

Page 366: ...quency band The most critical parameter of the omnidirectional sound source is emitted sound pressure level as it was mentioned in the beginning of the appendix The graphical illustration of the data recording in this method is presented in Figure 5 Fig 5 Data recording in the decay method of the reverberation time evaluation t s L dB t4 t1 L1 L4 5 dB noise margin linear approximation t2 t3 30 dB ...

Page 367: ... path Menu Measurement RT60 Settings parameter The above graph shows that the proper setting of the Recording Time value is very important The registration time has to be long enough to acquire sufficient number of background noise level values In other case the decay curve region could not be properly analysed or decay region could not fulfil the dynamic condition mentioned above It is recommende...

Page 368: ...nt back till point ts to allow recognising the beginning of the decay region In the SVAN xxx instruments this time is equal to the Time Step path Menu Measurement RT60 Settings parameter value multiplied by 50 The time between markers ttrig and te registered since ttrig forward to record whole decay curve together with significantly long period of the noise level This time in SVAN xxx instruments ...

Page 369: ... 5 upper cone 6 microphone protecting tube 7 anti bird spikes 8 windscreen SA 209 9 desiccator not included 10 M5x10 hex socket raised screw 11 washer 12 bottom 13 thread adapter not included Tools K 3mm Allen key Spare parts O1 O ring type gasket Ø35x1 O2 O ring type gasket Ø26x1 O3 O ring type gasket Ø12x1 5 Parts not included A SV 17 preamplifier B SV 40AE microphone C SC 293 ...

Page 370: ...370 SVAN 979 User Manual Appendixes O ring gasket locations inside ...

Page 371: ...371 SVAN 979 User Manual Appendixes F 2 ASSEMBLY OF SA 279 1 Secure preamplifier A with the dummy microphone 2 and connect the cable C 2 Pull tube 1 over the cable ...

Page 372: ...amp halves 4 to the connector and insert O ring gasket 3 on the lightning signed place 4 Apply the upper conical part 5 on the preamplifier Note Do not use preamplifier without the dummy microphone It can cause damage of the O ring gasket inside the cone ...

Page 373: ...373 SVAN 979 User Manual Appendixes 5 Screw the tube on the cone by rotating the tube so as to not twist the cable 6 Replace the dummy microphone 2 with the microphone cartridge B ...

Page 374: ...374 SVAN 979 User Manual Appendixes 7 Calibrate the complete system using SVANTEK acoustic calibrator 8 Install the microphone protection tube 6 Use the Allen key K as a pin at protecting tube orifice ...

Page 375: ...375 SVAN 979 User Manual Appendixes 9 Mount windscreen 8 and the anti bird spikes 7 10 Slide the desiccator 9 inside the tube ...

Page 376: ...1 Place the cable in the slot and connect the bottom part 12 by three screws 10 with washers 11 Use the Allen key K 12 Mount the completed system on the dedicated tripod or pole Use thread adapter 13 if necessary see last note on next page ...

Page 377: ...ced Take care when examining the foam as squeezing it too aggressively can damage the surface Colour of the silica gel used in the desiccator part 9 when it is dry is amber If colour of the silica gel turns light grey it means that the gel is soaked wetted and the desiccator is not able to absorb more moisture Colour of the silica gel is visible through the window of the desiccator If colour of th...

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