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     SVAN 971 User Manual 

– Appendixes 

160 

7100 

-2,86 

-3,45 

-3,86 

-3,82 

-3,66 

-3,66 

-4,19 

-4,15 

-2,79 

-3 

8000 

-3,49 

-3,4 

-4,11 

-4,47 

-3,97 

-3,92 

-4,1 

-4,74 

-3,61 

-3,68 

8500 

-3,87 

-3,87 

-4,52 

-5,01 

-4,29 

-4,38 

-4,71 

-5,25 

-4,48 

-3,88 

9000 

-4,18 

-4,4 

-5,2 

-5,45 

-4,76 

-4,8 

-5,03 

-5,58 

-4,71 

-4,6 

9500 

-4,57 

-4,57 

-5,44 

-5,55 

-5,33 

-4,98 

-4,93 

-5,83 

-5,55 

-4,73 

10000 

-4,11 

-4,85 

-5,04 

-5,83 

-5,83 

-5,26 

-5,19 

-6,13 

-5,61 

-5,31 

10600 

-4,93 

-5,59 

-5,6 

-6,51 

-6,42 

-5,87 

-5,73 

-6,77 

-6,21 

-6,24 

11200 

-5,18 

-6,21 

-6,21 

-6,98 

-7,07 

-6,32 

-6,26 

-7,18 

-6,78 

-6,77 

11800 

-5,43 

-6,08 

-6,55 

-7,52 

-7,64 

-6,8 

-6,69 

-7,55 

-7,55 

-6,88 

12500 

-6,1 

-6,67 

-7,29 

-8,15 

-8,18 

-7,32 

-7,15 

-7,89 

-7,82 

-7,75 

f [Hz]  200-210  210-220  220-230  230-240  240-250  250-260  260-270  270-280  280-290  290-300 

250 

-0,05 

-0,05 

-0,07 

-0,07 

-0,08 

-0,08 

-0,08 

-0,08 

-0,08 

-0,07 

315 

-0,18 

-0,18 

-0,19 

-0,2 

-0,21 

-0,22 

-0,22 

-0,22 

-0,21 

-0,19 

400 

-0,06 

-0,06 

-0,07 

-0,08 

-0,08 

-0,09 

-0,09 

-0,08 

-0,07 

-0,06 

500 

-0,35 

-0,35 

-0,36 

-0,36 

-0,36 

-0,35 

-0,33 

-0,31 

-0,26 

-0,23 

630 

-0,38 

-0,39 

-0,41 

-0,41 

-0,41 

-0,41 

-0,39 

-0,36 

-0,3 

-0,25 

800 

-0,27 

-0,3 

-0,33 

-0,34 

-0,34 

-0,32 

-0,29 

-0,21 

-0,14 

-0,09 

1000 

-0,09 

-0,13 

-0,17 

-0,19 

-0,19 

-0,17 

-0,13 

-0,07 

-0,03 

-0,03 

1250 

-0,2 

-0,27 

-0,33 

-0,34 

-0,33 

-0,27 

-0,16 

-0,07 

-0,12 

-0,15 

1600 

-0,19 

-0,3 

-0,35 

-0,36 

-0,35 

-0,28 

-0,18 

-0,11 

-0,13 

-0,12 

2000 

-0,82 

-0,95 

-1 

-1 

-0,92 

-0,79 

-0,7 

-0,68 

-0,68 

-0,61 

2240 

-0,71 

-0,84 

-0,87 

-0,85 

-0,67 

-0,7 

-0,91 

-0,91 

-0,69 

-0,74 

2500 

-0,85 

-0,97 

-0,97 

-0,86 

-0,68 

-0,7 

-0,76 

-0,75 

-0,78 

-0,82 

2800 

-1,02 

-1,23 

-1,23 

-1,06 

-0,95 

-0,99 

-0,9 

-0,79 

-0,93 

-0,88 

3150 

-0,99 

-1,24 

-1,26 

-0,97 

-0,82 

-1,1 

-0,95 

-0,93 

-0,93 

-0,67 

3550 

-1,28 

-1,44 

-1,39 

-1,16 

-1,17 

-1,34 

-1,11 

-1,16 

-0,97 

-1 

4000 

-1,55 

-1,81 

-1,72 

-1,3 

-1,66 

-1,66 

-1,62 

-1,62 

-1,59 

-1,35 

4500 

-1,76 

-1,79 

-1,3 

-1,51 

-1,55 

-1,75 

-1,87 

-1,57 

-1,13 

-1,09 

5000 

-2,33 

-2,62 

-2,24 

-2,17 

-2,17 

-2,43 

-2,43 

-2,12 

-1,64 

-1,51 

5600 

-2,63 

-2,74 

-1,97 

-2,34 

-2,34 

-2,44 

-2,83 

-1,94 

-1,64 

-1,61 

6300 

-3,62 

-3,62 

-3,14 

-3,18 

-3,41 

-3,45 

-3,31 

-2,84 

-2,62 

-2,53 

7100 

-4,04 

-3,78 

-3,45 

-3,46 

-3,9 

-3,96 

-3,48 

-3,06 

-2,87 

-2,45 

8000 

-4,51 

-4,33 

-3,68 

-3,86 

-4,47 

-4,47 

-3,49 

-3,38 

-3,2 

-2,75 

8500 

-4,96 

-4,34 

-4,05 

-4,2 

-4,94 

-4,49 

-3,83 

-3,88 

-3,44 

-3,19 

9000 

-5,32 

-4,86 

-4,47 

-4,6 

-5,37 

-4,93 

-4,35 

-4,21 

-3,69 

-3,14 

9500 

-5,66 

-5,28 

-4,92 

-5,19 

-5,71 

-5,42 

-4,68 

-4,68 

-4,13 

-3,55 

10000 

-5,75 

-4,94 

-5,27 

-5,38 

-5,97 

-5,75 

-5,07 

-5,07 

-4,26 

-3,57 

10600 

-6,53 

-5,65 

-5,78 

-6,51 

-6,51 

-6,26 

-5,67 

-4,94 

-4,71 

-4,05 

11200 

-6,93 

-5,93 

-6,29 

-7,07 

-7,07 

-6,1 

-6,16 

-5,4 

-5,15 

-4,26 

11800 

-7,34 

-6,38 

-6,58 

-7,49 

-7,49 

-6,47 

-6,66 

-5,75 

-5,05 

-4,49 

12500 

-7,94 

-7,11 

-7,17 

-8,31 

-8,24 

-7,41 

-6,78 

-6,42 

-5,45 

-4,63 

Содержание SVAN 971

Страница 1: ...USER MANUAL SVAN 971 POCKET SIZE SOUND LEVEL METER ANALYSER Warsaw 28 03 2018 Copyright 2018 SVANTEK All rights reserved ...

Страница 2: ...rmission is prohibited Trademarks Trademarks or registered marks in this manual belong to their respective manufacturers Microsoft and Windows are registered trademarks of Microsoft Corporation 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 any kind eithe...

Страница 3: ...T MEASUREMENT FUNCTION 25 4 2 INSTRUMENT S CALIBRATION CALIBRATION 25 4 2 1 Calibration By Measurement 26 4 2 2 History of calibrations Last Calibration 27 4 2 3 Post measurement calibration Post Calibration 27 4 2 4 Automatic calibration Auto Calibration 28 5 CONFIGURING MEASUREMENT PARAMETERS MEASUREMENT 29 5 1 SETTING UP GENERAL MEASUREMENT PARAMETERS GENERAL SETTINGS 29 5 2 SETTING UP THE MEAS...

Страница 4: ...ing the directory for logger files saving Working Directory 51 7 1 2 Renaming a file directory Rename 51 7 1 3 Information about a file directory Info 52 7 1 4 Deleting a file directory Delete 52 7 1 5 Erasing memory Erase Disk 52 7 2 MANAGING SETUP FILES SETUP MANAGER 52 8 CONFIGURING INSTRUMENT PARAMETERS INSTRUMENT 53 8 1 CHOOSING THE USER INTERFACE MODE USER INTERFACE 53 8 2 CHECKING POWER BAT...

Страница 5: ...s of 1 1 and 1 3 octave analysis Spectrum 64 11 3 CONFIGURING 1 1 AND 1 3 OCTAVE SPECTRA VIEWS 65 11 3 1 Presentation of 1 1 and 1 3 octave spectra 65 11 3 2 Adjusting scales of the spectrum plot Display Scale 66 11 3 3 Selection of spectra to be viewed Spectrum View 67 12 DOSIMETER 68 12 1 SELECTION OF THE DOSIMETER FUNCTION 68 12 2 SETTING GENERAL PARAMETERS GENERAL SETTINGS 68 12 3 SETTING PROF...

Страница 6: ... FUNCTIONS 108 A 9 FUNCTION 9 WRITE IN THE DATA FILE INTO THE INTERNAL FLASH DISC 112 A 10 CONTROL SETTING CODES 113 APPENDIX B DATA FILE STRUCTURES 117 B 1 GENERAL STRUCTURE OF THE SVAN 971 FILES 117 B 2 STRUCTURE OF THE FILE CONTAINING RESULTS FROM LOGGER S FILE 136 B 2 1 The contents of the files in the logger 136 B 2 1 1 Record with the results 137 B 2 1 2 Record with the state of the markers ...

Страница 7: ...SPECIFICATION OF SVAN 971 178 C 5 USING OF THE SA 271 OUTDOOR MICROPHONE PROTECTION UNIT 182 APPENDIX D DEFINITIONS AND FORMULAE OF MEASURED VALUES 213 D 1 BASIC TERMS AND DEFINITIONS 213 D 2 DEFINITIONS AND FORMULAS OF THE SLM RESULT 214 D 3 DEFINITIONS AND FORMULAS OF THE ADDITIONAL DOSIMETER FUNCTION RESULTS 217 D 4 DEFINITIONS AND FORMULAS OF THE ADDITIONAL RUNNING LEQ FUNCTION RESULTS 218 D 5...

Страница 8: ...e Field compensation 46 Dim Delay 53 Dim Mode 53 Disk Name 55 Display 48 Display Modes 48 Display Scale 51 70 Dosimeter 29 72 Dosimeter results 74 Dosimeter Results 52 Downloading 28 Dynamics 52 70 E Environment compensation 46 Erase Disk 56 Event Recording 42 Exchange Rate 73 Exponential 35 Exposure Time 73 F Factory Settings 24 61 Fast Unlock 58 File 54 File Info view 48 51 File Manager 54 Filte...

Страница 9: ...Outdoor filters 46 P Position selection 22 Post Calibration 31 Post trigger 40 Power Off 59 Powering 23 Pre trigger 40 45 Print 63 Print Options 64 Print Spectrum 65 Print Statistics 65 Printer 66 Printing Results 65 Profiles 37 PTC Threshold Level 73 R Range 45 Recording 42 Recording Time 42 45 Rename 55 Repetition Cycles 34 38 Report 63 Resetting 77 RS232 59 RTC 59 Running LEQ 29 75 Running SPL ...

Страница 10: ...User Manual 10 U ULT Threshold Level 73 Unit Label 60 Uploading 28 Usb 59 User interface 21 User Interface 57 V Voice comments 61 W Warnings 62 Weighting filter 72 Windscreen compensation 46 Working Directory 55 ...

Страница 11: ...orithm automatically activates the calibration process whenever a sound calibrator is installed on the microphone and the calibration history is saved for later inspection Thanks to a robust IP65 and pocket size housing this instrument is an excellent tool for anyone who deals with acoustic measurements SVAN 971 comes with SvanPC software for data downloading visualization basic post processing an...

Страница 12: ...nts Integration measurement run time programmable up to 24 h Setup editor available with Supervisor or SvanPC software Super contrast colour OLED display Wide range of temperature operating conditions Protection rating IP 65 for use in the field Very handy light weight and robust pocket size case Easy and friendly user interface for quick start and stop 1 3 ACCESSORIES INCLUDED SV 7052E microphone...

Страница 13: ...logging 1 1 1 3 octave analysis SV 971_1 1 1 octave analysis option SV 971_3 1 1 1 3 octave analysis option SV 971_10 noise dosimetry option SV 971_15 audio events recording option Note The software options listed above can be purchased at any time as only the entry of a special unlocks code is required for their activation ...

Страница 14: ... or off Start Stop This key allows you to start and stop the measurement process Enter This key allows you to open the selected position on the Menu list to confirm selected settings or to switch the views of the result presentation modes Some additional functions of this key will be described in the following chapters of this manual Menu This key pressed together with the Shift allows you to ente...

Страница 15: ...hange the relationship between the Y axis and X axis of all plots presented on the screen program the Real Time Clock RTC and delayed run Timer REC The simultaneously pressing the and keys initiates recording of a voice signal as a comment see Paragraph 9 3 Voice comments 2 2 INPUT AND OUTPUT SOCKETS OF THE INSTRUMENT Top cover of the instrument The measurement Input is placed in the centre of the...

Страница 16: ... the instrument Thanks to its speed it is widely used in all PCs The standard 4 pin socket is described in detail in Appendix C There is a memory micro SD card slot under the bottom cover of the instrument and spaces for the 4 x AAA batteries Note Switch the power off before connecting the instrument to any other device e g a printer or a Personal Computer or fitting the microphone capsule ...

Страница 17: ...ns regarding instrument status memory power real time etc measurement status measurement elapsed time measurement start stop pause trigger logger etc measurement parameters measured result profile number file name detector type filter etc User interface mode The user interface may be presented in three modes Start Stop Simple or Advanced These modes can be selected in the User Inter window of the ...

Страница 18: ...value of the selected parameter Press Enter to saves all performed changes in the list of parameters List of options In the list of options consists only one can be selected The selection of the option is performed in the following way Select the desired option with the key and press Enter This option becomes active and the list is closed After re entering this list again the last selected option ...

Страница 19: ...se letters and space appear in the inversely displayed position after each press of said key Use the key pressed together with Shift to insert or delete the position in the edited text Help information In most windows the last line or two lines contain help information how to select or modify the parameter s value change the character in the text line etc For example Delete Shift means that you ca...

Страница 20: ... Set window path Menu Display Screen Set 3 3 GETTING STARTED Turning the instrument on To switch the power on press the Shift and Start Stop keys simultaneously The instrument goes through the self test routine in this time the manufacturer s logo and the name of the instrument is displayed and then it enters the basic SPL view mode Starting measurements To start a measurement press the Start Stop...

Страница 21: ... by the manufacturer with the use of the Factory Set position in the Aux Setup section 3 4 DESCRIPTION OF ICONS Indicators of the instrument state Additional information about the instrument s state gives the row of icons visible in the top line of the display The real time clock RTC is also displayed in the same line together with icons Meanings of icons are as follows play icon is displayed when...

Страница 22: ... port is activated Slope trigger icon is displayed when the trigger condition is set up to Slope The icon appears alternately with the note icons Shift icon is displayed when the Shift key is pressed Slope trigger icon is displayed when the trigger condition is set up to Slope The icon appears alternately with the note icons underrange icon is displayed when during the measurement the underrange w...

Страница 23: ...r using Factory Settings function is called SVANTEK С Note During the measurement run with data logging to the logger file the curve icon is displayed The file name Logger Name is generated automatically using a pattern LLdd where LL is the string of letters so called prefix and dd is a string of digits that forms a number Up to 8 characters can be used to name a file The default prefix for the lo...

Страница 24: ...e approach is used for uploading files usually setup files Files can be upload via micro SD card or via SvanPC or Supervisor software 3 7 ACTIVATION OF OPTIONAL FUNCTIONS Standard instrument firmware contains all basic functions to perform measurements in accordance with most international standards and methods For more complex tasks you may expand the instrument with additional functions These fe...

Страница 25: ...are optional and should be unlocked by entering the activation code in the text editor screen which is opened after first attempt to select it Once unlocked this option will be ready to use permanently Optional functions that broaden the applications of the instrument can be easily installed These optional functions can be provided initially by the manufacturer or can be purchased later when requi...

Страница 26: ... an alternative reference sound signal source 2 Attach the sound calibrator SV 35A or equivalent 114 dB 1000 Hz carefully over the microphone of the instrument Note It is also possible to use an electro mechanical pistonphone which generates the signal ca 124 dB or different type of sound calibrator dedicated for microphones In any case before starting the calibration measurement you should set th...

Страница 27: ...nd save the new calibration factor If calculated calibration factor is out of the 3 dB range the special warning appears on the screen If the calibration factor is out of the 20 dB range the calibration factor is not accepted ENT 6 Detach the calibrator from the microphone Note To quit the calibration procedure without saving the calibration factor press ESC 4 2 2 History of calibrations Last Cali...

Страница 28: ...tach the SV 35A or equivalent 114 dB 1000 Hz calibrator to the microphone and switch it on if the used calibrator doesn t have automatic switch on feature Generated by the calibrator sound pressure level starts the Automatic Calibration process if the difference between the Calibration Level value set up in the Calibration screen and the measured calibrator SPL level is in the range 5 dB During th...

Страница 29: ...lowing to programme the alarm function This position appears only in the Dosimeter function and the Advanced interface mode Logging allowing to configure the logging function Spectrum allowing to set up spectrum parameters This position becomes available only in 1 1 Oct and 1 3 Oct functions Range allowing to set up the required measurement range Comp Filter allowing to switch on the required comp...

Страница 30: ...scription of the Logger Setup The integration period can be infinite Inf or selected from the set 24h 8h 1h 15m 5m 1m from 1s to 59s with 1s step from 1m to 59m with 1m step from 1h to 24h with 1h step During the Integration Period the instrument performs series of 1 second measurements integrations and every second averages 1 second results with the results averaged for n 1 seconds These averaged...

Страница 31: ...In this case the indicator Lin or L is displayed in different modes of the result presentation Exponential enables fulfilling the requirements of another standard for time averaged Leq measurements When this option is selected values of the Leq Lden LEPd Lnn and Sel results depend on the detector time constant Results are displayed with the indicator of the detector type selected in the profiles p...

Страница 32: ...type trigger starts the 1 second measurement integration under the condition value of the RMS result Source integrated during 0 5 ms is lower than the threshold value Level In other cases the instrument continues checking the trigger condition every 0 5 mc This is a mirrored trigger to the Level trigger Note When a measurement is waiting for the level trigger the flashing Level trigger icon superi...

Страница 33: ... filter selection Next weighting filters for both Filter and Filter Peak positions can be selected Z class 1 according to IEC 61672 1 2013 standard A class 1 according to IEC 651 and IEC 61672 1 2013 standards C class 1 according to IEC 651 and IEC 61672 1 2013 standards B class 1 according to IEC 651 standard LF low frequency filter according to China requirements LEQ detector selection Available...

Страница 34: ...ecorded to the file in the end of every measurement cycle The figure below illustrates principles of saving measurement results Summary Results and Logger Results saving The Logging list enables programming of the logging functions recording of summary and logger results measurement history and recording of an audio signal so called event to the same file The Logging list consists of four position...

Страница 35: ...fined in the Advanced mode or default settings Off If Spec Time is selected in the Log Split position then six additional positions Split Time1 Split Time2 Split Time3 Split Time4 Split Time5 and Split Time6 appear in the list The position is switched off if Off was selected Pressing the key changes the Off to the time format value Further use of the key enables setting the desired time of the day...

Страница 36: ... activated in Disp Modes and therefore doesn t appear on the display Note In the Simple interface mode the Logger Results position is hidden but the instrument will use settings previously defined in the Advanced mode or default settings all results are selected 5 5 3 Logger trigger settings Logger Trigger In the Logger Trigger list you can configure the way the logger results will be registered i...

Страница 37: ... unchanged Threshold level The threshold level for the logger trigger Level can be set in the range from 24 dB to 136 dB range An instantaneous value of the LEQ result calculated with selected Filter and Detector constant for the first profile path Menu Measurement Profiles compares with the Level value every 0 5 milliseconds Pre and post trigger recording In the Pre Trigger position the number of...

Страница 38: ...eriod Slope type trigger The Slope trigger starts an event recording under the condition rising value of the RMS result Source averaged by 0 5 ms passes above the threshold level Level After pressing the Start key the instrument checks the trigger condition with intervals defined by the Tr Period parameter and if condition is met starts the event recording The recording lasts minimum time defined ...

Страница 39: ...adient trigger starts an event recording for the Rec Time under the condition the value of the Leq result Source averaged by 0 5 ms is greater than the threshold level Level and the gradient of this Source is greater than the gradient threshold level Gradient In other cases the recording doesn t start but if it has been already started it can be continued until the Rec Time has elapsed The instrum...

Страница 40: ...he LEQ detector of the first profile which is denoted here as Leq 1 Threshold level The level of the triggering source Level can be set in the range from 24 dB to 136 dB An instantaneous value of the RMS or LEQ result calculated with selected Filter and Detector constant for the first profile path Menu Measurement Profiles compares with the Level value every 0 5 milliseconds Speed of triggering si...

Страница 41: ...OMPENSATION FILTER The Comp Filter position is available only in the Advanced interface mode The Microphone filter microphone inner noise compensation is switched on by default however it is possible to switch it off for electrical measurements e g for laboratory calibration measurements ENT The Dif Field filter enables you to set compensation for sound measurements in the diffuse field conditions...

Страница 42: ...ngs that were used before the instrument was turned off ENT Note In the Simple interface mode the Timer position is hidden but the instrument will use settings previously defined in the Advanced mode or default settings Timer Off Setting hour and day of the measurement s start The Start hh mm and Stop hh mm positions determine the time for the measurement to start and to stop automatically In the ...

Страница 43: ...ment will be waiting for the next Monday to start measurement at 22 00 Next file will be automatically named R2 and so on Such cycle will be repeated so many times as is defined by Max days parameter If more than one day in a week is selected every performed measurement will increase the day counter The measurement cycle stops when the day counter number is equal to Max days If Inf value is select...

Страница 44: ...Logger Res allowing to select time history results to be viewed as a plot Screen Set allowing to switch rotation of the screen on off and set the energy saver function 6 1 ENABLING DISPLAY MODES DISPLAY MODES The One Result view mode is always active Other display modes can be enabled or disabled in the Display Modes screen You may switch between those results view modes that were enabled in the D...

Страница 45: ...current second of the measurement The value presented there belongs to the range 0 Integration Period Note For some results weighting filters and detector type are presented in the result name For example result Lmax with A filter and Fast detector will be presented as LAFmax For such results there is no indication in the filter and detector field 6 1 2 Three profiles display mode In the 3 Profil ...

Страница 46: ...splay modes The presentation mode can be changed with the key 6 1 3 Logger display mode In the Logger mode the history results selected in the Logger View list are displayed as a plot You may change viewed results by pressing the Enter key The cursor position can be changed with the key ENT Field description of the Logger mode 1 Logger Plot 2 Result value for cursor position 3 Result name Profile ...

Страница 47: ...key The statistical level and the appropriate value are presented in the line below the plot 6 1 5 File information display mode The File Info position enabling additional display mode with information about the logger file The File Info screen indicates the file name and its size When Logger is Off path Menu Measurement Logging Logger Set the File Info position is disabled 6 1 6 Running SPL displ...

Страница 48: ...crophone ENT 6 3 SELECTION OF SUMMARY RESULTS FOR PRESENTATION MEASUREMENT RESULTS The Meas Res position enables choosing the Sound Level Meter SLM Results or Dose Meter Dosim Res measurement results which will be presented in the different display modes ENT The result can be selected from SLM Results list TIME Lpeak Lmax Lmin L Leq LE Lden LEPd Ltm3 Ltm5 Ln and OVL or Dosim Res list TIME Lpeak Lm...

Страница 49: ...rnal source of power can be minimising by reducing the brightness of the screen when possible There are two options of power saver function Dim Mode The screen may be switch off Screen Off or dimmed with different levels Level 1 2 or 3 In the case when any of these options is set after a delay set by parameters Dim Delay from pressing any key the screen is dimmed or switched off After it has happe...

Страница 50: ...n the instrument there is no any possibility to create any file Therefore among other things Logging position in the Measurement list is not available Files are saved automatically you should only define the file name in the Logger Name position path Menu Measurement Logging Logger Set Elements of the file structure depend on the selected function Lev Met 1 1 Oct 1 3 Oct Dosimeter and logging sett...

Страница 51: ...d properties The last screen after pressing the key contains information about the SD Card memory name Disk Name memory free space Free Space and total memory space Capacity 7 1 1 Assigning the directory for logger files saving Working Directory You can assign the directory for automatic saving of logger files To do this choose the required directory and press the Enter key Select the Work Dir pos...

Страница 52: ...es from the SD card select any directory and press Enter Select the Erase Disk position in the command list and press Enter The instrument will ask for confirmation of this action since it cannot be undone ENT ENT 7 2 MANAGING SETUP FILES SETUP MANAGER The Setup Manag enables saving new setup files deleting loading them and displaying file information as well as selecting those setup files that wi...

Страница 53: ...n the Advanced user interface mode RTC allowing to set the Real Time Clock Unit Label allowing to display instrument properties 8 1 CHOOSING THE USER INTERFACE MODE USER INTERFACE There are three modes of the user interface Start Stop Simple or Advanced These modes can be selected in the User Inter window The Simple mode defines basic instrument settings while the Advanced mode defines full scope ...

Страница 54: ...e available Alkaline and Rechargeable Note Rechargeable batteries must be extracted and charged with the use of an external charger They cannot be charged when fitted inside the instrument 8 3 PROGRAMMING THE KEYBOARD FUNCTIONS KEYBOARD The Keyboard position enables programming the operation mode of the Shift key Shift to switch on the key lock Key Lock and the fast unlock Fast Unlock of the keybo...

Страница 55: ...n enables selecting the RS 232 interface transmission speed Baud Rate and setting the time limit during which the data transfer should be performed Time Out ENT Transmission speed RS 232 interface transmission Baud Rate speed can be selected from the following available values 1200 2400 4800 9600 19200 38400 57600 or 115200 bits s Other RS 232 transmission parameters are fixed to 8 bits for data N...

Страница 56: ...d press Enter to confirm the selection If you exit this window with ESC the new time will be also saved ENT 8 9 CHECKING THE INSTRUMENT PROPERTIES UNIT LABEL The Unit Label position enables checking the model of the instrument it s serial number the current software version installed and the appropriate standards which the instrument fulfils ENT Note The contents of the Unit Label should be always...

Страница 57: ...le warnings to be displayed during the normal operation of the instrument 9 1 SELECTING THE LANGUAGE OF THE USER INTERFACE LANGUAGE The Language position enables selecting the language of the user interface If after turning the instrument on an unknown language interface appears on the display the user can reset the instrument with three Shift Enter Start keys pressed together during the switching...

Страница 58: ...ed in the DOSIMETER section of this manual 9 5 WARNINGS SELECTION WARNINGS The Warnings position allows to activate messages which will be displayed during the normal operation of the instrument ENT If Logging is active the instrument will generate a warning if the user tries to start a measurement run without logging the previous results The user can continue working without saving the measuremen...

Страница 59: ...ata transmission should be performed Time Out ENT The RS 232 interface transmission speed Baud Rate can be selected from the following available values 1200 2400 4800 9600 19200 38000 57600 or 115200 bits s The transmission speed should correspond to the same one selected in the printer The other RS 232 transmission parameters are fixed to 8 bits for data No parity 1 Stop bit The default value of ...

Страница 60: ...er pressing a key it returns to the Report list Below is an example printout of the report SVANTEK C SVAN 971 S N 39039 2017 05 22 13 59 24 T 00 00 05 Profile 1 Slow A LCpeak 82 9 Ld 55 9 LASmax 77 0 LEPd 55 9 LASmin 58 8 Ltm3 74 2 LAS 58 8 Ltm5 77 0 LAeq 55 9 OVL 0 0 LAE 62 9 Profile 2 Slow C LCpeak 82 9 Ld 60 8 LCFmax 80 0 LEPd 60 8 LCFmin 53 3 Ltm3 77 2 LCF 60 3 Ltm5 80 0 LCeq 60 8 OVL 0 0 LCE ...

Страница 61: ...stics list of the Report menu You may exclude all Leq Lmax Lmin and Lpeak spectra positions Leq Spect Lmax Spect Lmin Spect Lpeak Spect from the report Off include all bands of 1 1 or 1 3 spectra Print All or select essential bands for the report Pr Selected from the Spectrum list of the Report menu You may include Print units of the results or excluded them Off from the report 10 3 SELECTING RESU...

Страница 62: ...THE REPORT SPECTRUM The Spectrum position allows you to select essential bands of the Leq Lmax Lmin and Lpeak spectra for the report ENT 10 6 PRINTER SETTINGS PRINTER The Printer position enables setting the number of characters in the report lines ENT ...

Страница 63: ... Min or Max result is calculated and presented as a bar on the spectrum plot Results of 1 1 Octave and 1 3 Octave analysis spectra can be examined by the user on a display in the Spectrum presentation mode Besides results for bands three Total values are measured and displayed as an additional three bars on the spectrum plot Parameters for Total values e g filters are set by default and cannot be ...

Страница 64: ...itched on path Menu Measurement Logging Logger Setup Logger On The Leq and Lpeak results from 1 1 Octave or 1 1 Octave analysis can also be saved in the logger file with the step defined by the Logger Step parameter path Menu Measurement Logging Logger Setup The enabling of spectrum saving in the logger file is made by checking the Peak Spectrum or Leq Spectrum position with the key 11 2 2 Setting...

Страница 65: ...ctra to be viewed instantaneous averaged maximum or minimum 11 3 1 Presentation of 1 1 and 1 3 octave spectra The Spectrum position in the Display Modes list becomes available for the 1 1 Octave and 1 3 Octave functions and switches on or off the spectrum view Spectrum ENT Field descriptions of the Spectrum mode 1 Spectrum plot 2 Type of filter and RMS detector 3 Type of result and its value for t...

Страница 66: ...cale of the spectrum plot and switch the grid and automatic scale adjustment on off ENT Scaling the vertical axis The Dynamics position enables selecting the required scale dynamic range of the spectrum plot It is possible to select the range from the set 10dB 20dB 40dB 80dB and 120dB Switching the grid on off The Grid position switches on or off the grid in the spectrum view Switching on off the ...

Страница 67: ...ave or 1 3 Octave functions you can select different spectra to be visible on the display Spect Type Averaged Instantaneous Max Min and Peak Below are views of different spectra Minimum and maximum spectra can be presented at the same plot with the Averaged and Instantaneous spectrum when the Max or and Min parameter is switched on ...

Страница 68: ...ed off Off or can be programmed based on absolute time On If Pause is On two additional positions appear which enable setting time for pause start Pause Begin and time for pause end Pause End Note In the Simple interface mode the Pause parameters are hidden but the instrument will use settings previously defined in the Advanced mode or default settings Off 12 3 SETTING PROFILE PARAMETERS PROFILE X...

Страница 69: ...posure time is halved 2 3 4 5 6 ULT Threshold Level Upper Level Time is a threshold level for calculation of ULT results 70dB 140dB PTC Threshold Level Peak Threshold Counter is a threshold level for calculation of PTC results 70dB 140dB 12 4 SETTING THE EXPOSURE TIME EXPOSURE TIME The Exp Time enables setting the desired value of the workday exposure time that is used for calculation of the LEPd ...

Страница 70: ... are measured and displayed OVL Lpeak Lmax Lmin L DOSE D_8h PrDOSE LAV Leq LE SEL8 E E_8h LEPd PSEL Ltm3 Ltm5 Lnn PTC PTP ULT TWA PrTWA Lc a 12 7 1 Displaying of Leq Lav results Leq Lav Leq Lav The Leq Lav position enables selecting the mode of displaying the Leq and Lav results If Both is selected Leq and Lav are always displayed together If Mutual Exclusive is selected the rule is for Exchange R...

Страница 71: ...st 15 or 60 minutes of measurement Therefore these results are not displayed before the expiration of time accordingly 15 or 60 minutes For example if LR15 and LR60 are displayed with RTC 15 04 11 it means that LR15 was calculated as Leq for period from 14 49 12 to 15 04 11 and LR60 was calculated as Leq for period from 14 04 12 to 15 04 11 One second later RTC 15 04 12 it will mean that LR15 was ...

Страница 72: ... charge the batteries switch off the instrument unscrew the bolt 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 the USB interface is performed by connecting its USB socket to the PC or other USB power source via the SC 156 cable When the instrument is powered from the exte...

Страница 73: ...nnect the preamplifier with the microphone to the instrument position the instrument socket and the preamplifier plug in the way that the red point on the instrument socket is in line with the pilot slot on the preamplifier plug Then insert the preamplifier plug into the socket and tighten the screw threaded ring To disconnect the preamplifier from the instrument unscrew the screw threaded ring of...

Страница 74: ...f it is not going to be used regularly 14 7 TRANSPORTATION AND STORAGE For transportation or storage purpose we recommend using the packaging provided by the manufacturer In a potentially dirty industrial environment it is advisable to use the carrying case provided by the manufacturer such as waterproof case SA 72 or pocket soft bag SA 80 which ensures excellent mechanical and environmental prote...

Страница 75: ...ers so called profiles using different weighting filters and LEQ detectors Manual 4 1 1 1 Octave Measurement Function enabling calculation of broad band Level Meter and 1 1 octave sound parameters in accordance with Class 1 IEC 61260 1 2014 1 1 octave results are presented as a spectrum plot a function of result vs central band frequency and can be saved as a time history Manual 4 1 11 1 3 Octave ...

Страница 76: ...lue is important the absolute calibration of the measurement channel should be performed in field Manual 4 2Błąd Nie można odnaleźć źródła odwołania Calibration by Measurement Type of calibration based on the reference signal measurement with the use of an sound calibrator Manual 4 2 1 Calibration Level Level of the reference signal generated by used calibrator Manual 4 2 1 Calibration Result Meas...

Страница 77: ...mory Manual 4 2 3 15 3 DEFINITIONS OF MEASURED RESULTS Name Description Screen Reference Elapsed time Time from the measurement start that displayed under the result 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...

Страница 78: ...r Z and accordingly displayed as LAeq LCeq or LZeq Appendix D L Time weighted sound level expressed at observation time expressed in dB It is measured with frequency weighting A C or Z and time weighting F S I and displayed as LAF LAS LCF LCS etc Appendix D LE Sound Exposure Level SEL the constant sound level that has the same amount of energy in one second as the original noise event and is the s...

Страница 79: ...o noise during the night and the evening The instrument displays Ld Le Ln Lde Len Lnd or Lden depending on the day and night time which the measurement covers Due to different country requirements it is possible to shift day time from 7h 19h to 6h 18h Appendix D PSEL Individual Sound Exposure Level to the noise is equal to the standing sound level in a measurement period The PSEL result is calcula...

Страница 80: ...of the overpasses of the Threshold Level by Lpeak result This result is incremented in 100 ms intervals Appendix D PTP PTC result expressed in percent Appendix D ULT Upper Limit Time time that SPL exceeded the ULT Threshold Level set during configuration Appendix D TWA Time Weighted Average average A weighted sound level for a nominal 8 hour workday with Time Weighting S and Exchange Rate 5 TWA is...

Страница 81: ...g Leq the rolling sliding Leq window for the last 60 minutes of measurement 3600 seconds moving with 1 second step Appendix D 15 4 MEASUREMENT PARAMETERS Name Description Screen Reference Measurement Section of the Main Menu enabling the selection of the measurement parameters Manual 5 General Settings General measurement settings delay of the measurement start Start Delay maximum delay period for...

Страница 82: ... RMS based results RMS detector Linear or Exponential The IEC 61672 1 2013 standard requires Linear integration without time weighting however in number of countries old regulation refers to the Exponential RMS integration with standard time weighting Fast or Slow Manual 5 1 Linear Linear type of integration of RMS based results RMS detector without time weighting according to the IEC 61672 1 2013...

Страница 83: ...ost applicable world standards Z A C B LF Manual 5 3 Appendix C Appendix D Detector Exponential RMS detector time constant applied in the profile Impulse Fast or Slow for sound results like Leq Lmax Lmin LE LEPd Lden L Ltm3 and Ltm5 Manual 5 3 Appendix D Compensation Filter Digital filter that compensates some effect Microphone Diffuse Field Windscreen Outdoor Environment and Outdoor Airport Manua...

Страница 84: ...alibration factor is always added to the range limits Manual 5 6 Appendix C High High linear operating range for the sinusoidal signal The calibration factor is always added to the range limits Manual 5 6 Appendix C Measurement Trigger Triggering of the measurement integration process Triggering is switched on if one of its three available modes is selected Level Level or Gradient If the instrumen...

Страница 85: ...radient In other cases the instrument continues checking the trigger condition every 0 5 ms During one measurement cycle the instrument performs as many 1 second integrations as many seconds the Integration Period consists and stops the measurement cycle This type of trigger has the same logic as Level trigger but the trigger condition requires also gradient level to be exceeded Manual 5 2 Source ...

Страница 86: ... is available Manual 5 5 1 Logger Split Saving of the logger records in separate files according to different rules after the integration period or every quarter half an hour hour or on specific times of a day Manual 5 5 1 Logger Step Time of measuring integration of the selected results Leq Lmin Lmax Lpeak same meaning as Integration Period for the Summary Results The Logger Step can be selected ...

Страница 87: ...ania Level Type of trigger enabling the logging of the time history results Logger Results calculated for the Logger Step period under the condition value of the LEQ result Source integrated by the Logger Step period is greater than the threshold level Level In other cases the logging is skipped Manual 5 5 3Błąd Nie można odnaleźć źródła odwołania Level Type of trigger enabling the logging of the ...

Страница 88: ...he start of the measurement till it s end On trigger recording put additional conditions for triggering and ending of the recording If the instrument is waiting for the trigger condition which is checked every 0 5 millisecond the appropriate trigger icon is flashing on the display alternatively with the note icon Manual 5 5 4 Slope Type of trigger enabling the event recording start under the condi...

Страница 89: ... t start except when the recording is already in progress during the Recording Time Manual 5 5 4 Trigger manual Type of trigger enabling manual triggering of the recording start after pressing simultaneously and keys during the measurement Manual 5 5 4 Integr Period Type of trigger enabling the signal recording every time the measurement starts and the recording will last minimum Recording Time If...

Страница 90: ...before the first trigger condition moment Off or 1 s Manual 5 5 4 Spectrum 1 1 Octave or 1 3 Octave spectrum parameters setup Filter and Detector Manual 11 2 2 Peak Sp Position in the Logger Results window that switches on off the Lpeak spectra saving as a time history in a logger file Manual Błąd Nie można odnaleźć źródła odwołania Leq Sp Position in the Logger Results window that switches on off...

Страница 91: ...s time is considered for the LEPd result calculation Manual 12 4 Appendix D Criterion Level Steady noise level permitted for a full eight hour work shift Manual 12 3 Threshold Level Noise level limit below which the dosimeter does not accumulate noise dose data Manual 12 3 Exchange Rate Amount by which the permitted sound level may increase if the exposure time is halved Manual 12 3 ULT Threshold ...

Страница 92: ...ual 6 1 One Result view Mode of one result view This mode is always available and cannot be disabled Manual 6 1 Running SPL view Mode of the running SLP result view This mode is used before the measurement start for the noise level estimation Manual 3 3 3 Profiles view Mode of presentation of three results on the screen Manual 6 1 2 Logger view Mode of presentation of time history logger results M...

Страница 93: ...her On or Off during time history or spectrum presentation Manual 6 2 Autoscale Automatic scale adjustment of the Y axis switcher On or Off during time history or spectrum presentation Manual 6 2 Measurement Results Selection of the Sound Level Meter or Dose Meter results which will be presented on the display Manual 6 3 SLM Results Selection of the Sound Level Meter results which will be presente...

Страница 94: ...Leq results for the 1 1 Octave or 1 3 Octave bands Manual 11 3 3 Averaged Spectrum of averaged Leq results for the 1 1 Octave or 1 3 Octave bands Manual 11 3 3 Max Spectrum of Lmax results for the 1 1 Octave or 1 3 Octave bands Manual 11 3 3 Min Spectrum of Lmin results for the 1 1 Octave or 1 3 Octave bands Manual 11 3 3 Peak Spectrum of Lpeak results for the 1 1 Octave or 1 3 Octave bands Manual...

Страница 95: ...e form of a set of functions that are available for the user Instrument offers three types of user interface limited to start and stop of the measurement Start Stop narrow set of functions for novice users Simple and full set of functions Advanced Manual 8 1 Start Stop User interface mode that limits the menu to only one User Interface position in the main Menu and measurement windows Manual 8 1 S...

Страница 96: ...sition in the Instrument list that enables selecting the transmission speed of the USB interface There are two options Full 12Mbps and High 480Mbps Manual 8 5 RS232 Position in the Instrument list that enables selecting of the RS 232 interface transmission speed Baud Rate and to set the time limit during which the communication operation should be performed Time Out Manual 8 6 Self Vibration Posit...

Страница 97: ...strument interface to a specific user Manual 9 Language Selection of the user interface language Manual 9 1 Factory Settings Restoration of the default settings of the instrument Manual 9 2 Comments Definition of the file name for recording of voice comments Manual 9 3 Leq Lav Position in the Auxiliary Setup menu that enables to control displaying of Leq and Lav results Both or Mutually Exclusive ...

Страница 98: ...SVAN 971 User Manual 98 ...

Страница 99: ...m the internal Flash disc or RAM memory 5 read out of the statistical analysis results 7 special control functions 9 writing the data file into the internal flash disk Dread write the data file from the external memory SD card A 2 FUNCTION 1 INPUT OUTPUT OF THE CONTROL SETTING CODES 1 function enables the user to send the control setting codes to the instrument and read out a file containing the c...

Страница 100: ... Z filter is selected for 1 1 OCTAVE or 1 3 OCTAVE analysis f1 FAST detector is selected in profile 1 SLM function C1 1 IMPULSE detector is chosen in profile 2 SLM function C0 2 SLOW detector is selected in profile 3 SLM function C2 3 FAST detector is selected in profile 1 DOSE function C1 4 IMPULSE detector is chosen in profile 2 DOSE function C0 5 SLOW detector is selected in profile 3 DOSE func...

Страница 101: ...file 3 is None h0 3 exchange rate in profile 1 is set to 3 x3 1 exchange rate in profile 2 is set to 3 x3 2 exchange rate in profile 3 is set to 5 x5 3 measurement trigger mode is switched off m0 LEQ result from the first profile is used as the measure triggering signal s0 measurement trigger level is set to 100 dB l100 gradient in measurement trigger is equal to 10 dB ms O10 LEQ result from the f...

Страница 102: ... dB R Leq result ccc the value in dB U LE result ccc the value in dB B k Lden result ccc the value in dB k flag determining the kind of the result I nn LEPd result ccc the value in dB nn the value of Exposure Time in minutes Y Ltm3 result ccc the value in dB Z Ltm5 result ccc the value in dB L nn value L of the nn statistics ccc the value in dB g LR15 result ccc the value in dB available only in R...

Страница 103: ...lue in dB L nn value L of the nn statistics ccc the value in dB C PTC result ccc the counter value c PTP result ccc the value in l ULT result ccc value in seconds W TWA result ccc the value in dB w PrTWA result ccc the value in dB a Lc a result ccc the value in dB The exemplary results of the instrument s response after sending to it the following sequence of characters 2 1 coming from the first p...

Страница 104: ... max spectrum 3 N min spectrum 3 P peak spectrum The device responds sending the last measured spectrum when the instrument is in STOP state or currently measured spectrum when the instrument is in RUN state in the following format 3 Status Byte LSB of the transmission counter MSB of the transmission counter data byte data byte Status Byte gives the information about the current state of the instr...

Страница 105: ...ng of the file length number of bytes to read 4 4 current settings file 4 4 size of the current settings file 4 4 offset length part of current settings file where offset offset from the beginning of the current settings file length number of bytes to read Note The character is treated as the file name of the catalogue and must be sent to the instrument All data words are sent as LSB MSB When an e...

Страница 106: ...able disks in format D c disk1 disk2 disk3 2 D d this function returns the parameters of the working directory in format D d disk address count 3 D d disk address this function enables to change the working directory Response D d command was executed D d command cannot be executed 4 D r disk address offsetB nB function enables the user to read the file except of internal memory Response D r disk a...

Страница 107: ...1 2 or 3 The device responds sending the current classes of the statistics in the following format 5 p Status Byte LSB of the transmission counter MSB of the transmission counter NofClasses BottomClass ClassWidth Counter of the class Counter of the class Status Byte gives the information about the current state of the instrument D7 D6 D5 D4 D3 D2 D1 D0 where D7 0 means overload does not happen 1 m...

Страница 108: ...ntrol functions Some of them should be used with the extreme care 7 function formats are defined as follows 7 AC This function returns auto calibration in the format 7 AC x 7 AC x This function enables x 1 or disables x 0 the auto calibration and returns the following sequence of characters 7 AC 7 AS Get settings for the Auto Run function Response format 7 AS e HH MM hh mm dW mR where e On e 1 Off...

Страница 109: ...ion enables x 1 or disables x 0 the diffuse field correction setting and returns the following sequence of characters 7 CD 7 CS This function restores the factory settings 7 DL This function returns day time limits in format 7 DL x 7 DL x This function enables x 1 or disables x 0 day time limits and returns the following sequence of characters 7 DL 7 DS file_name This function deletes setup file i...

Страница 110: ... xx is language codes GE German EN English IT Italian PL Polish RU Russian HU Hungarian TU Turkish NL Flemish FR French SP Spanish 7 LB This function returns the name of last logger in format 7 LB logger_name 7 LS setup_name This function loads setup and writes settings into EEPROM The selected file must exist The function returns 7 LS 7 LW This function returns the name of last wave file in forma...

Страница 111: ...SD card Sector size is 512B 7 NF This function returns number of free sectors on SD card 1 denotes no SD card Sector size is 512B 7 OD This function returns outdoor compensation in the format 7 OD x 7 OD x This function enables x 1 enviroment x 2 airport or disables x 0 the outdoor compensation and returns the following sequence of characters 7 OD 7 PI This function returns PIC version 7 PO This f...

Страница 112: ... following sequence of characters 7 UF 7 US This function returns unit subversion 7 UV This function returns usb voltage in 10 mV 7 WD This function returns windscreen compensation in the format 7 WD x 7 WD x This function enables x 1 or disables x 0 the windscreen compensation and returns the following sequence of characters 7 WD 7 VB This function returns the Bootstrap software version 7 VH This...

Страница 113: ...actor Q Qnnnn c nnnn real number with the value of the calibration factor 99 9 99 9 c 0 left channel 1 right channel Measurement function M M1 LEVEL METER M2 1 1 OCTAVE analyser M3 1 3 OCTAVE analyser M4 DOSE METER M7 RUNNING LEQ Range R R1 LOW R2 HIGH Filter type in profile n F F1 n Z filter for profile n F2 n A filter for profile n F3 n C filter for profile n SLM 1 1OCTAVE 1 3OCTAVE RUNNING LEQ ...

Страница 114: ...2 n logger with LR15 values in profile n 64 n logger with LR60 values in profile n Storing the results of 1 1 OCTAVE analysis and 1 3 OCTAVE analysis in logger s file b bx x sum of the following flags flags 1 logger with Lpeak values 8 logger with Leq values Logger step d dnns nn number in seconds 1 60 dnnm nn number in minutes 1 60 Integration period D D0 infinity measurement finished by pressing...

Страница 115: ... result from the 1st profile Measure Triggering level TriggerLev l Innn nnn level in dB 24 136 Measure Triggering gradient O Onnn nnn gradient in dB ms 1 100 Exposure Time e ennn nnn time in minutes 1 720 Criterion Level c c1 p 80 dB c2 p 84 dB c3 p 85 dB c4 p 90 dB c5 p 60 dB c6 p 65 dB c7 p 70 dB c8 p 75 dB c9 p 87 dB p 1 2 3 profile number Threshold Level h h0 p None h1 p 70 dB h2 p 75 dB h3 p ...

Страница 116: ...e triggering condition TriggerPre XQ XQnn nn number of records saved in the logger before the triggering condition nn 0 10 Logger Triggering Number of records taken into account after the fulfilment of the triggering condition TriggerPost Xq Xqnnn nnn number of records saved in the logger after the fulfilment of the triggering condition nn 0 200 Threshold level for PTC calculation XC XCnnn p nnn l...

Страница 117: ...ger cf Tab B 1 15 contents of the file from the logger cf Tab B 1 16 Other elements of the file structure are not obligatory for each file type stated above They depend on the file type SLM DOSE METER file from the logger and on the setting of the FULL STAT These elements are as follows Header of the Summary Results Record saved in Summary Results Record cf Table B 1 17 main results saved in Summa...

Страница 118: ...ength 1 UnitNumberL unit number LSB word 2 UnitType type of the unit 971 SVAN 971 ALGORITM 111 117 GA 117 806 BSWA 806 3 SoftwareVersion software version 111 4 SoftwareIssueDate software issue date 5 DeviceMode mode of the instrument 6 UnitSubtype subtype of the unit 1 SVAN 971 BSWA 806 GA 117 3 ALGORITM 111 7 FileSysVersion file system version 110 8 reserved reserved 9 SoftwareSubversion software...

Страница 119: ...ctor 100 dB of calibration performed after the measurement Table B 1 5 USER s text Word number Name Comment 0 0xnn03 03 nn specification s length 1 title text the user s text two characters in a word finished with one or two null bytes Table B 1 6 Parameters and global settings Word number Name Comment 0 0xnn04 04 nn block s length 1 MeasureStartDate measure start date cf App B 4 2 MeasureStartTim...

Страница 120: ... 1 EXPONENT 15 SpectrumFilter 1 1 or 1 3 OCTAVE analysis filter 1 Z 2 A 3 C 5 B in other cases Reserved 16 SpectrumBuff 1 1 or 1 3 OCTAVE logger sum of the following flags 1 logger with Lpeak values 8 logger with Leq values in other cases reserved 17 ExposureTime exposure time 1 720 min 18 Leq Lav the method of viewing results Leq and Lav 0 Both 1 Mutually exclusive visibility depends of the EXCHA...

Страница 121: ...6 31 MainResBuff Summary results Contents defined as a sum of 0 none 1 Main Results 2 Spectrum 4 Spectrum MAX 8 Spectrum MIN 16 Spectrum PEAK 32 Statistical levels 64 Statistical analysis in profiles 128 Statistical analysis in 1 1 or 1 3 OCTAVE mode 32 StartSync Synchronization the start of measurement with RTC 0 switched off 1 synchronization to 1 min 15 synchronization to 15 min 30 synchronizat...

Страница 122: ... off 0 1439 Time in minutes Valid only if SplitMode is equal 1440 46 SplitTime 4 Logger files splitting time 1 off 0 1439 Time in minutes Valid only if SplitMode is equal 1440 47 SplitTime 5 Logger files splitting time 1 off 0 1439 Time in minutes Valid only if SplitMode is equal 1440 48 SplitTime 6 Logger files splitting time 1 off 0 1439 Time in minutes Valid only if SplitMode is equal 1440 49 P...

Страница 123: ... number Name Comment 0 0xnn2B 2B nn block s length 1 TriggerMode trigger mode 0 OFF 2 measurement on trigger SLOPE 3 measurement on trigger SLOPE 4 measurement on trigger LEVEL 5 measurement on trigger LEVEL 6 measurement on trigger GRAD 2 TriggerSource source of the triggering signal 0 Leq 1 the Leq result from the first profile 3 TriggerLevel level of triggering 24 136 dB 10 4 TriggerGrad gradie...

Страница 124: ...lment of the triggering condition 1 200 7 TriggerSampling reserved 8 TriggerRecTime reserved 9 TriggerStep trigger period given in 0 1 ms If zero Step is equal to logger time step cf Tab B 1 15 10 TriggerFilter reserved 11 BitsPerSample reserved Table B 1 9 Time domain signal recording parameters Word number Name Comment 0 0xnn31 31 nn block s length 1 TriggerMode trigger mode 0 OFF 1 recording wh...

Страница 125: ... TriggerMode trigger mode 0 OFF 1 recording whole measurement 2 recording on trigger SLOPE 3 recording on trigger SLOPE 4 recording on trigger LEVEL 5 recording on trigger LEVEL 6 recording on trigger GRAD 7 recording on trigger MANUAL 2 TriggerSource source of the triggering signal 0 Leq 1 the Leq result from the first profile 3 TriggerLevel level of triggering 24 136 dB 10 4 TriggerGrad gradient...

Страница 126: ... profile s mask 2 0xmm06 06 mm sub block s length 3 DetectorP 1 detector type in the 1st profile 0 IMP 1 FAST 2 SLOW 4 FilterP 1 filter type in the 1st profile 1 Z 2 A 3 C 5 B 6 LF 5 BufferP 1 logger contents in the 1st profile defined as a sum of 0 none 1 Lxpeak1 2 Lxymax2 4 Lxymin2 8 Lxyeq23 16 LAV 32 LR15 64 LR60 6 FilterPeakP 1 filter type for Peak result calculation in the 1st profile 1 Z 2 A...

Страница 127: ...d as a sum of 0 none 1 Lxpeak1 2 Lxymax2 4 Lxymin2 8 Lxyeq23 16 LAV 12 FilterPeakP 2 filter type for Peak result calculation in the 2nd profile 1 Z 2 A 3 C 5 B 6 LF 13 reserved reserved 14 0xmm06 06 mm sub block s length 15 DetectorP 3 detector type in the 3rd profile 0 IMP 1 FAST 2 SLOW 16 FilterP 3 filter type in the 3rd profile 1 Z 2 A 3 C 5 B 6 LF 17 BufferP 3 logger contents in the 3rd profil...

Страница 128: ...D_8h result not displayed 1 D_8h result displayed 8 LAV 0 LAV result not displayed 1 LAV result displayed 9 Leq 0 Lxyeq23 result not displayed 1 Lxyeq23 result displayed 10 LE 0 LxyE23 result not displayed 1 LxyE23 result displayed 11 SEL8 0 SEL8 result not displayed 1 SEL8 result displayed 12 E 0 E result not displayed 1 E result displayed 13 E_8h 0 E_8h result not displayed E_8h 1 result display...

Страница 129: ... 1 0x0307 03 number of profiles 07 active profiles mask 2 0xmm0A 0A mm sub block s length 3 NofClasses 1 number of classes in the first profile 120 4 BottomClass 1 bottom class boundary 10 dB in the first profile 5 ClassWidth 1 class width 10 dB in the first profile 6 0xmm0A 0A mm sub block s length 7 NofClasses 2 number of classes in the second profile 120 8 BottomClass 2 bottom class boundary 10...

Страница 130: ...ffTSec BuffTMillisec 1000 Table B 1 16 Contents of the file from the logger Word number Name Comment 0 BuffLength 2 1 result 1 result 2 result BuffLength 2 1 Table B 1 17 Header of the Summary Results Record saved in Summary Results Record Word number Name Comment 0 0xnn59 59 nn header s length 1 2 RecNumber Summary Results Record number 1 Table B 1 18_SLM Main results in SLM mode saved in Summary...

Страница 131: ...ord for measurement cycle definition in table B 1 6 22 0xmm08 08 mm sub block s length 23 24 OVL overload time 25 Result 2 1 Lxpeak1 value in the 2nd profile 100 dB 26 Result 2 2 LxyE23 value in the 2nd profile 100 dB 27 Result 2 3 maximal value Lxymax2 in the 2nd profile 100 dB 28 Result 2 4 minimal value Lxymin2 in the 2nd profile 100 dB 29 Result 2 5 Lxy2 value in the 2nd profile 100 dB 30 Resu...

Страница 132: ...B 1 6 1 x depends of the filter type for Peak result calculation in selected profile A C Z B cf Tab B 1 12 2 x depends of the filter type in selected profile A C Z B cf Tab B 1 12 y depends of the detector type in selected profile I imp F fast S slow cf Tab B 1 12 3 y only for exponential detector s type cf Tab B 1 6 Table B 1 18_DM Main results in DOSE METER mode saved in Summary Results Record W...

Страница 133: ... 2 5 Lxy2 value in the 2nd profile 100 dB 30 Result 2 6 Lxyeq23 value in the 2nd profile 100 dB 31 Result 2 7 reserved 32 Result 2 8 Ltm3 value in the 2nd profile 100 dB 33 Result 2 9 Ltm5 value in the 2nd profile 100 dB 34 Result 2 10 LAV value in the 2nd profile 100 dB 35 Result 2 11 TLAV value in the 2nd profile 100 dB 36 UnderRes 2 under range value in the 2nd profile 37 38 ULTime 2 ULT value ...

Страница 134: ... selected profile I imp F fast S slow cf Tab B 1 12 3 y only for exponential detector s type cf Tab B 1 6 Table B 1 19 Statistical levels saved in Summary Results Record Word number Name Comment 0 0xnn17 17 nn block s length 1 0xpprr pp used_profile rr profile s mask 2 N_stat_level number of statistical levels N 3 i pp 1 nn i number of the Lnn statistics i 0 N 1 3 i pp 1 p Lnn i p value of the Lnn...

Страница 135: ...3 OCTAVE values 31 AUDIO BAND 4 NTerTot number of TOTAL values 3 5 50 Tercje i 1 3 octave i value 100 dB i 1 NTer NTerTot 1 34 Table B 1 22 Results of the statistical analysis in profiles saved in Summary Results Record Word number Name Comment 0 0x010B 0B prof_mask 1 1 SubblockLength 2 number of classes in the first profile 2 2 3 Histogram 1 1 the first counter in the first profile 4 5 Histogram ...

Страница 136: ...ings cf Tab B 1 4 USER S text cf Tab B 1 5 Parameters and global settings cf Tab B 1 6 MEASUREMENT TRIGGER settings cf Tab B 1 7 LOGGER TRIGGER settings cf Tab B 1 8 Time domain signal recording parameters cf Tab B 1 9 Wave file recording parameters cf Tab B 1 10 Special settings for profiles cf Tab B 1 12 Display settings of the main results cf Tab B 1 13 Header of the statistical analysis cf Tab...

Страница 137: ...p to five words are written result1 Lxpeak1 result depending on the value of BufferP 2 cf Tab B 1 12 result2 Lxymax2 result depending on the value of BufferP 2 cf Tab B 1 12 result3 Lxymin2 result depending on the value of BufferP 2 cf Tab B 1 12 result4 Lxyeq23 result depending on the value of BufferP 2 cf Tab B 1 12 result5 LAV result depending on the value of BufferP 2 cf Tab B 1 12 4 results o...

Страница 138: ...ts registration The record with the breaks in the results registration consists of four words 0xB0ii 0xB1jj 0xB2kk 0xB3nn in which ii jj kk nn bytes denote 4 bytes counter of left or skipped records nnkkjjii ii is the least significant byte nn the most significant byte B 2 1 4 Record with the breaks account PAUSE in the results registration The record with the breaks in the results registration co...

Страница 139: ...3 0 b12 0 b11 header type 0 HS 1 HE b10 0 b9 1 b8 1 b15 b8 HS 0xC3 HE 0xCB b7 b0 length of the block if zero length of the block is saved in additional word L B 2 1 7 Record with audio data This record exists only in the case when the EVENT RECORDING function is active path Measurement Logging Event Rec Samples of the signal taken in the periods from 1 second to 8 hours are saved in the blocks Eac...

Страница 140: ...n error the samples were overwritten in the cycle buffer which means that the recording in the analyzed block is not correct b8 b6 b0 reserved B 2 1 8 Record with name of the comment file The format of the data frame is as follows HS D HE where HS starting header 1 word D The full name of the comment file e g REC62 WAV HE ending header 1 word which differs from the HS only on b11 bit thanks to it ...

Страница 141: ...f latitude 11 Latitude Sec Seconds part of latitude 12 Latitude MiliSec Miliseconds part of latitude 13 Latitude Dir Latitude direction N S 14 Longitude Deg Degree part of longitude 15 Longitude Min Minutes part of longitude 16 Longitude Sec Seconds part of longitude 17 Longitude MiliSec Miliseconds part of longitude 18 Longitude Dir Longitude direction E W 19 Altitude Altitude meters 20 Altitude ...

Страница 142: ...ollowing 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 0x000F month dt 5 date 9 0x007F 2000 year ...

Страница 143: ...red quantities The measured quantities for SLM mode are Lpeak SPL Lmax Lmin Leq RLeq SEL Ltm5 Lden LEPd Lnn The definitions for above mentioned parameters are given in Appendix D Additional functions Overload indication see Chapter 3 or Appendix A Under range indication see Chapter 3 or Appendix A Battery state indication see Chapter 3 High self vibration warning see Chapter 3 Conformance testing ...

Страница 144: ...the sinusoidal signal and microphone sensitivity 35 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 35 97 35 120 35 134 40 137 35 97 35 120 35 134 38 100 60 137 500 Hz 35 133 35 136 35 137 40 137 35 133 35 136 35 137 38 136 60 140 1 kHz 35 137 35 137 35 137 40 137 35 137 35 137 35 137 38 140 60 1...

Страница 145: ...trical Acoustical compensated Weighting filter Range A C Z A C Z Low 12 dB 12 dB 17 dB 15 dB 15 dB 20 dB High 22 dB 22 dB 26 dB 25 dB 25 dB 30 dB measured with the ST 02 microphone equivalent impedance 18 pF 10 Special filters Diffuse field compensation filter filter improving the complete instrument frequency response in the diffuse acoustic field see below Windscreen compensation filter filter i...

Страница 146: ...to from to from to from to from to from to from to from to from to 31 5 Hz 36 97 36 120 36 134 42 137 36 97 36 120 36 134 39 100 60 137 500 Hz 36 133 36 136 36 137 42 137 36 133 36 136 36 137 39 136 60 140 1 kHz 36 137 36 137 36 137 42 137 36 137 36 137 36 137 39 140 60 140 4 kHz 36 138 36 136 36 136 42 137 36 138 36 136 36 136 39 141 60 139 8 kHz 36 136 36 134 36 134 42 137 36 136 36 134 36 134 3...

Страница 147: ...ion level for the diffuse field 114 0 dB see A C O 7052E free field correction table below Microphone ACO 7052E prepolarized free field condenser microphone Nominal sensitivity 35 mV Pa corresponding to 29 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 155 dB Table C 1 6 ACO 7052E free field correc...

Страница 148: ... 500 630 800 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 01 0 01 0 01 0 01 0 01 Frequency Hz 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 12500 16000 20000 0 01 0 01 0 01 0 01 0 02 0 03 0 03 0 02 0 0 0 06 0 2 0 29 0 05 0 47 Preamplifier SV 18 nominal preamplifier attenuation 1 0 dB Power supply 2 5 mA 11 V 7 5V SV18 preamplifier frequency response 8 7 6 5 4 3 2 1 0 0 1 1 10 100 10...

Страница 149: ... when in the SLM the Z filter and time weighting F are selected and the SPL measurements are considered The greatest susceptibility is achieved when the SLM is placed parallel to the radio frequency field In addition if there is an extension cable the greatest susceptibility is achieved when the SLM and cable is placed along field and the cable is coil as solenoid Effect of electrostatic discharge...

Страница 150: ...500 1000 2000 Typical effect of vibration dB 54 6 41 9 38 2 46 2 38 3 42 0 58 6 52 4 Table C 1 10 Typical effect of vibration parallel to the plane of microphone diaphragm f Hz 15 6 31 25 62 5 125 250 500 1000 2000 Typical effect of vibration dB 26 5 53 1 30 1 27 0 33 3 48 6 35 6 40 7 Effect of vibration perpendicular to the microphone membrane Z filter 0 00 10 00 20 00 30 00 40 00 50 00 60 00 70 ...

Страница 151: ...02 1122 02 0 08 4869 68 0 09 266 07 0 03 1154 78 0 05 5011 87 0 11 273 84 0 02 1188 50 0 02 5158 22 0 03 281 84 0 03 1223 21 0 01 5308 84 0 07 290 07 0 02 1258 93 0 01 5463 87 0 01 298 54 0 03 1295 69 0 01 5623 41 0 09 307 26 0 02 1333 52 0 05 5787 62 0 53 316 23 0 02 1372 46 0 07 5956 62 0 45 Svan 971 typical frequency response 3 50 3 00 2 50 2 00 1 50 1 00 0 50 0 00 0 50 1 00 100 00 1000 00 1000...

Страница 152: ...01 2371 37 0 06 10292 01 0 41 562 34 0 02 2440 62 0 10 10592 54 0 20 578 76 0 02 2511 89 0 13 10901 84 0 35 595 66 0 02 2585 23 0 07 11220 18 0 23 613 06 0 02 2660 73 0 02 11547 82 0 11 630 96 0 01 2738 42 0 08 11885 02 0 25 649 38 0 02 2818 38 0 21 12232 07 0 20 668 34 0 03 2900 68 0 29 12589 25 0 12 687 86 0 02 2985 38 0 29 12956 87 0 12 707 95 0 01 3072 56 0 18 13335 21 0 03 728 62 0 00 3162 28...

Страница 153: ... 971 Directional response for SLM Class SVAN 971 with microphone ACO 7052E and preamplifier SV 18 for specified frequencies Total directional characteristics The round charts show the directional characteristic and the charts below shows the errors for angles 250 Hz 315 Hz ...

Страница 154: ...SVAN 971 User Manual Appendixes 154 1000 Hz 1250 Hz 400 Hz 500 Hz 630 Hz 800 Hz ...

Страница 155: ...SVAN 971 User Manual Appendixes 155 1600 Hz 2000 Hz 2240 Hz 2500 Hz 2800 Hz 3150 Hz ...

Страница 156: ...SVAN 971 User Manual Appendixes 156 3550 Hz 4000 Hz 4500 Hz 5000 Hz 5600 Hz 6300 Hz ...

Страница 157: ...SVAN 971 User Manual Appendixes 157 7100 Hz 8000 Hz 8500 Hz 9000 Hz 9500 Hz 10000 Hz ...

Страница 158: ...0 0 01 0 01 0 01 315 0 0 0 01 0 02 0 04 0 06 0 09 0 11 0 14 0 16 400 0 0 02 0 04 0 06 0 09 0 12 0 14 0 16 0 18 0 19 500 0 0 0 0 01 0 03 0 06 0 08 0 11 0 15 0 18 630 0 0 0 0 01 0 02 0 05 0 09 0 13 0 19 0 23 800 0 0 01 0 01 0 0 0 01 0 02 0 05 0 09 0 14 1000 0 0 01 0 01 0 01 0 01 0 02 0 04 0 05 0 05 0 05 1250 0 0 0 0 01 0 04 0 08 0 12 0 13 0 12 0 08 1600 0 0 0 0 01 0 04 0 08 0 1 0 09 0 03 0 04 2000 0...

Страница 159: ...0 0 13 0 49 0 99 1 64 2 21 3 07 3 86 4 4 5 4 f Hz 100 110 110 120 120 130 130 140 140 150 150 160 160 170 170 180 180 190 190 200 250 0 01 0 01 0 01 0 01 0 02 0 02 0 03 0 03 0 04 0 05 315 0 18 0 18 0 19 0 19 0 19 0 18 0 18 0 17 0 17 0 17 400 0 19 0 19 0 18 0 18 0 16 0 14 0 11 0 09 0 08 0 06 500 0 22 0 28 0 28 0 31 0 32 0 33 0 33 0 33 0 34 0 34 630 0 27 0 31 0 34 0 36 0 36 0 37 0 36 0 36 0 36 0 37 ...

Страница 160: ...50 0 2 0 27 0 33 0 34 0 33 0 27 0 16 0 07 0 12 0 15 1600 0 19 0 3 0 35 0 36 0 35 0 28 0 18 0 11 0 13 0 12 2000 0 82 0 95 1 1 0 92 0 79 0 7 0 68 0 68 0 61 2240 0 71 0 84 0 87 0 85 0 67 0 7 0 91 0 91 0 69 0 74 2500 0 85 0 97 0 97 0 86 0 68 0 7 0 76 0 75 0 78 0 82 2800 1 02 1 23 1 23 1 06 0 95 0 99 0 9 0 79 0 93 0 88 3150 0 99 1 24 1 26 0 97 0 82 1 1 0 95 0 93 0 93 0 67 3550 1 28 1 44 1 39 1 16 1 17 ...

Страница 161: ...6 2500 0 74 0 38 0 34 0 32 0 21 0 06 2800 0 63 0 49 0 24 0 11 0 11 0 05 3150 0 56 0 36 0 18 0 24 0 24 0 17 3550 0 73 0 55 0 58 0 55 0 26 0 03 4000 1 02 1 02 0 81 0 41 0 46 0 36 4500 0 82 0 67 0 72 0 21 0 12 0 13 5000 1 27 1 2 0 66 0 66 0 44 0 04 5600 1 56 1 03 0 86 0 7 0 23 0 06 6300 1 89 1 8 1 29 1 09 1 1 0 67 7100 2 29 1 61 1 39 0 89 0 47 0 36 8000 2 1 1 66 1 2 0 83 0 36 0 03 8500 2 48 2 04 1 56...

Страница 162: ... 38 0 33 0 35 0 02 316 23 0 05 0 02 0 07 3072 56 0 30 0 33 0 03 325 46 0 05 0 02 0 07 3162 28 0 27 0 31 0 04 334 97 0 05 0 02 0 07 3254 62 0 24 0 29 0 05 344 75 0 05 0 02 0 07 3349 65 0 22 0 27 0 05 354 81 0 05 0 03 0 08 3447 47 0 20 0 25 0 05 365 17 0 05 0 03 0 08 3548 13 0 17 0 24 0 07 375 84 0 05 0 03 0 08 3651 74 0 15 0 22 0 07 386 81 0 05 0 03 0 08 3758 37 0 13 0 2 0 07 398 11 0 05 0 03 0 08 ...

Страница 163: ... 01 9172 76 0 04 0 01 0 05 971 63 0 18 0 17 0 01 9440 61 0 09 0 01 0 08 1000 00 0 19 0 18 0 01 9716 28 0 12 0 03 0 09 1029 20 0 21 0 19 0 02 10000 00 0 12 0 06 0 06 1059 25 0 22 0 2 0 02 10292 01 0 15 0 09 0 06 1090 18 0 23 0 21 0 02 10592 54 0 17 0 12 0 05 1122 02 0 25 0 22 0 03 10901 84 0 25 0 15 0 10 1154 78 0 26 0 23 0 03 11220 18 0 25 0 17 0 08 1188 50 0 28 0 24 0 04 11547 82 0 35 0 17 0 18 1...

Страница 164: ...SVAN 971 User Manual Appendixes 164 C 1 3 Effect of the SA 271 Outdoor Protection Unit See chapter C 5 for the details related to using of the SA271 Outdoor Protection Unit ...

Страница 165: ...ng range with 10 dB margin from noise RMS for the sinusoidal signal at reference conditions 1 kHz 0 0 dB calibration factor LOW from 9 μVRMS A weighting to 0 99 VRMS A weighting LOW from 9 μVRMS B weighting to 0 99 VRMS B weighting LOW from 9 μVRMS C weighting to 0 99 VRMS C weighting LOW from 22 μVRMS Z weighting to 0 99 VRMS Z weighting HIGH from 22 μVRMS A weighting to 4 96 VRMS A weighting HIG...

Страница 166: ...C Reference relative humidity 65 Calibration electrical Calibration level 0 5 VRMS Basic accuracy 0 2 dB for the temperature T 23 C 5 C for sinusoidal signal 120 dBRMS in the band 10 Hz 20 kHz with the HP input 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 120 dBRMS in the band 10 Hz 20 kHz with the Z input filter ...

Страница 167: ...quirements of the IEC 61672 1 2013 standard for the Class 1 A filter C meeting requirements of the IEC 61672 1 2013 standard for the Class 1 C filter Z meeting requirements of the IEC 61672 1 2013 standard for the Class 1 Z filter B meeting IEC651 for the Type 1 filter See part C 3 for the A C B and Z filters characteristics Noise voltage measured with SV18 preamplifier equivalent impedance adapte...

Страница 168: ...es 168 1 1 Octave filters 10 filters with centre frequencies from 32 Hz to 16 kHz base 10 meeting IEC 61260 1 2014 standard for Class 1 16 0 kHz 1 1 octave filter Audio Full band 8 0 kHz 1 1 octave filter 4 0 kHz 1 1 octave filter ...

Страница 169: ...SVAN 971 User Manual Appendixes 169 2 0 kHz 1 1 octave filter 1 0 kHz 1 1 octave filter 500 Hz 1 1 octave filter ...

Страница 170: ...SVAN 971 User Manual Appendixes 170 250 Hz 1 1 octave filter 125 Hz 1 1 octave filter 63 0 Hz 1 1 octave filter ...

Страница 171: ... Hz 1 1 octave filter 1 3 Octave filters 31 filters with centre frequencies from 20 Hz to 20 kHz base 10 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 ...

Страница 172: ...SVAN 971 User Manual Appendixes 172 1 3 octave filters for 4 0 kHz 1 1 octave filter 1 3 octave filters for 2 0 kHz 1 1 octave filter 1 3 octave filters for 1 00 kHz 1 1 octave filter ...

Страница 173: ...SVAN 971 User Manual Appendixes 173 1 3 octave filters for 500 Hz 1 1 octave filter 1 3 octave filters for 250 Hz 1 1 octave filter 1 3 octave filters for 125 Hz 1 1 octave filter ...

Страница 174: ...SVAN 971 User Manual Appendixes 174 1 3 octave filters for 63 0 Hz 1 1 octave filter 1 3 octave filters for 31 5 Hz 1 1 octave filter 1 3 octave filters for 16 0 Hz 1 1 octave filter ...

Страница 175: ...cal noise floor for the 1 3 octave filters in the SVAN 971 instrument SVAN 971 noise levels in 1 1 octave bands Range LOW 0 2 4 6 8 10 12 31 5 63 125 250 500 1000 2000 4000 8000 16000 Hz dB SVAN 971 noise level in 1 3 octave bands for Range LOW 0 1 2 3 4 5 6 7 20 31 5 50 80 125 200 315 500 800 1250 2000 3150 5000 8000 12500 20000 Hz dB ...

Страница 176: ...TAL FILTERS 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 ...

Страница 177: ...SVAN 971 User Manual Appendixes 177 B filter Class 1 according to the IEC 651 B filter characteristics ...

Страница 178: ...d that card was formatted as FAT32 MicroSD contact pad assignment outer view Table C 4 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 Supply voltage ground 7 DAT0 Data Line Bit 0 8 DAT1 Data Line Bit 1 Input Preamplifier Connector The input of the measured signal is ...

Страница 179: ...placeable AAA batteries Power consumption from the 6V source is approx 60 mA at 20 C So typical operating time from 4 x AAA alkaline batteries will be about 16 hours SVAN 971 can be also powered from the AAA Class rechargeable batteries Note For the temperatures below 0 C operating time can decrees depending on the batteries Interface USB The SVAN 971 USB 2 0 interface enables remote control of th...

Страница 180: ...115200 bit s Note The SV 75 must be connected to the SVAN 971 USB port and proper operation of this port has to be set up in the instrument s SETUP Menu before The SV 75 DB 09 F pin female connector pin out is given below Table C 4 4 SV 75 interface description PC RS 232 9 pin connector Signal name SV 56 connector DB 09 F Pin number 1 LSD 1 not connected 2 RXD 3 3 TXD 2 4 DTR 6 connected to pin 4 ...

Страница 181: ...hapter 7 9 and 7 10 applying test methods in accordance with IEC 61000 4 2 IEC 61000 4 3 2002 and IEC 61000 4 8 b according to EN ISO8041 2005 Chapters 7 4 7 6 12 20 6 12 20 8 applying test methods in accordance with IEC 61000 4 2 2001 IEC 61000 4 3 2002 and IEC 61000 4 8 Note EMC compatibility is guaranteed only with the original accessories supplied by SVANTEK Safety The product described above ...

Страница 182: ...hrough the hole on the top of the desiccator Note See also SA 271 Assembly Guide to learn how to assemble and disassemble the microphone s outdoor protection Note Using SA 271 changes the frequency response and measuring ranges of SVAN 971 Please check the below given specification Depending on the measurement task SA 271 can be used in two operational modes 1 With reference incidence angle 90 deg...

Страница 183: ...116 26 119 26 120 31 120 26 116 26 119 26 120 29 119 50 123 1 kHz 26 120 26 120 26 120 31 120 26 120 26 120 26 120 29 123 50 123 4 kHz 26 121 26 119 26 119 31 120 26 121 26 119 26 119 29 124 50 123 8 kHz 26 119 26 117 26 117 31 120 26 119 26 117 26 117 29 122 50 120 12 5 kHz 26 115 26 114 26 114 31 120 26 115 26 114 26 114 29 118 50 117 Table C 5 3 Linear operating range HIGH with Environmental fi...

Страница 184: ...ee Field response for the 90 deg incidence angle 251 19 0 08 0 00 0 08 258 52 0 15 0 00 0 15 266 07 0 14 0 02 0 15 273 84 0 16 0 02 0 18 281 84 0 17 0 02 0 18 290 07 0 17 0 01 0 18 298 54 0 17 0 01 0 18 307 26 0 17 0 00 0 17 316 23 0 16 0 01 0 17 325 46 0 16 0 01 0 16 334 97 0 15 0 02 0 16 344 75 0 15 0 01 0 16 354 81 0 15 0 01 0 16 365 17 0 15 0 00 0 15 375 84 0 14 0 00 0 14 386 81 0 14 0 01 0 13...

Страница 185: ...0 96 0 09 0 04 0 05 649 38 0 10 0 05 0 05 668 34 0 09 0 04 0 05 687 86 0 09 0 05 0 04 707 95 0 09 0 05 0 04 728 62 0 09 0 05 0 04 749 89 0 08 0 05 0 03 771 79 0 08 0 06 0 03 794 33 0 08 0 06 0 02 817 52 0 07 0 05 0 01 841 40 0 07 0 06 0 01 865 96 0 08 0 08 0 01 891 25 0 09 0 08 0 01 917 28 0 10 0 08 0 02 944 06 0 12 0 09 0 03 971 63 0 14 0 09 0 04 1000 00 0 13 0 09 0 04 1029 20 0 13 0 10 0 03 1059...

Страница 186: ... 09 0 04 0 41 0 37 2371 37 0 05 0 42 0 37 2440 62 0 07 0 44 0 38 2511 89 0 07 0 47 0 40 2585 23 0 06 0 50 0 44 2660 73 0 04 0 53 0 49 2738 42 0 04 0 57 0 53 2818 38 0 01 0 59 0 58 2900 68 0 01 0 61 0 62 2985 38 0 02 0 64 0 65 3072 56 0 01 0 67 0 68 3162 28 0 01 0 69 0 70 3254 62 0 00 0 73 0 73 3349 65 0 01 0 78 0 76 3447 47 0 01 0 82 0 81 3548 13 0 03 0 86 0 89 3651 74 0 07 0 91 0 98 3758 37 0 10 ...

Страница 187: ...95 0 18 3 40 3 22 8659 64 0 24 3 57 3 33 8912 51 0 32 3 75 3 42 9172 76 0 37 3 93 3 56 9440 61 0 42 4 10 3 68 9716 28 0 48 4 29 3 81 10000 00 0 51 4 47 3 96 10292 01 0 51 4 63 4 11 10592 54 0 58 4 83 4 25 10901 84 0 62 5 01 4 39 11220 18 0 68 5 21 4 54 11547 82 0 78 5 44 4 66 11885 02 0 90 5 70 4 81 12232 07 0 94 5 89 4 95 12589 25 1 01 6 13 5 12 12956 87 1 05 6 34 5 29 13335 21 1 01 6 50 5 49 137...

Страница 188: ...nmental Compensated case effect for the 90 deg incidence angle Environmental 251 19 0 08 0 09 0 12 258 52 0 15 0 06 0 09 266 07 0 15 0 04 0 08 273 84 0 18 0 02 0 06 281 84 0 18 0 01 0 05 290 07 0 18 0 01 0 03 298 54 0 18 0 01 0 03 307 26 0 17 0 02 0 07 316 23 0 17 0 06 0 11 325 46 0 16 0 09 0 14 334 97 0 16 0 14 0 20 344 75 0 16 0 17 0 23 354 81 0 16 0 16 0 22 365 17 0 15 0 14 0 21 375 84 0 14 0 1...

Страница 189: ...6 0 05 0 02 0 16 649 38 0 05 0 02 0 17 668 34 0 05 0 02 0 17 687 86 0 04 0 04 0 16 707 95 0 04 0 04 0 17 728 62 0 04 0 04 0 18 749 89 0 03 0 07 0 16 771 79 0 03 0 11 0 14 794 33 0 02 0 15 0 11 817 52 0 01 0 17 0 10 841 40 0 01 0 17 0 11 865 96 0 01 0 16 0 13 891 25 0 01 0 16 0 14 917 28 0 02 0 18 0 13 944 06 0 03 0 16 0 16 971 63 0 04 0 15 0 19 1000 00 0 04 0 17 0 18 1029 20 0 03 0 18 0 18 1059 25...

Страница 190: ...9 0 37 0 09 0 19 2371 37 0 37 0 08 0 29 2440 62 0 38 0 11 0 35 2511 89 0 40 0 20 0 36 2585 23 0 44 0 26 0 40 2660 73 0 49 0 36 0 40 2738 42 0 53 0 52 0 35 2818 38 0 58 0 62 0 35 2900 68 0 62 0 73 0 34 2985 38 0 65 0 83 0 35 3072 56 0 68 0 82 0 45 3162 28 0 70 0 83 0 53 3254 62 0 73 0 80 0 65 3349 65 0 76 0 72 0 81 3447 47 0 81 0 75 0 85 3548 13 0 89 0 78 0 88 3651 74 0 98 0 81 0 90 3758 37 1 06 0 ...

Страница 191: ... 3 22 1 74 3 19 8659 64 3 33 1 83 3 24 8912 51 3 42 1 98 3 39 9172 76 3 56 2 12 3 54 9440 61 3 68 2 15 3 61 9716 28 3 81 2 09 3 59 10000 00 3 96 2 05 3 60 10292 01 4 11 1 89 3 50 10592 54 4 25 1 55 3 25 10901 84 4 39 1 22 3 06 11220 18 4 54 0 84 2 90 11547 82 4 66 0 41 2 76 11885 02 4 81 0 08 2 62 12232 07 4 95 0 41 2 67 12589 25 5 12 0 78 2 68 12956 87 5 29 1 18 2 61 13335 21 5 49 1 64 2 43 13724...

Страница 192: ...l SVAN 971W with SA 271 Typical compensated frequency response for the 90 deg incidence angle 251 19 0 01 0 03 0 04 258 52 0 09 0 03 0 06 266 07 0 12 0 04 0 08 273 84 0 16 0 04 0 12 281 84 0 18 0 04 0 14 290 07 0 19 0 04 0 15 298 54 0 19 0 04 0 15 307 26 0 15 0 05 0 10 316 23 0 11 0 05 0 06 325 46 0 07 0 05 0 02 334 97 0 03 0 06 0 03 344 75 0 01 0 06 0 07 354 81 0 00 0 06 0 06 365 17 0 01 0 07 0 0...

Страница 193: ...96 0 07 0 18 0 11 649 38 0 07 0 19 0 12 668 34 0 07 0 19 0 12 687 86 0 08 0 20 0 12 707 95 0 08 0 21 0 13 728 62 0 08 0 22 0 14 749 89 0 10 0 23 0 13 771 79 0 14 0 25 0 11 794 33 0 17 0 26 0 09 817 52 0 19 0 27 0 08 841 40 0 18 0 28 0 10 865 96 0 17 0 29 0 12 891 25 0 17 0 30 0 13 917 28 0 20 0 31 0 11 944 06 0 19 0 32 0 13 971 63 0 20 0 34 0 14 1000 00 0 21 0 35 0 14 1029 20 0 20 0 36 0 16 1059 2...

Страница 194: ...9 0 45 0 28 0 17 2371 37 0 45 0 37 0 08 2440 62 0 49 0 46 0 03 2511 89 0 60 0 56 0 04 2585 23 0 70 0 66 0 04 2660 73 0 85 0 76 0 09 2738 42 1 05 0 87 0 18 2818 38 1 20 0 97 0 23 2900 68 1 35 1 07 0 28 2985 38 1 48 1 18 0 30 3072 56 1 50 1 27 0 23 3162 28 1 54 1 36 0 18 3254 62 1 52 1 45 0 07 3349 65 1 48 1 53 0 05 3447 47 1 57 1 60 0 03 3548 13 1 67 1 66 0 01 3651 74 1 79 1 71 0 08 3758 37 1 97 1 ...

Страница 195: ...3 95 1 48 1 45 0 03 8659 64 1 50 1 41 0 09 8912 51 1 44 1 41 0 03 9172 76 1 43 1 42 0 01 9440 61 1 52 1 46 0 06 9716 28 1 72 1 50 0 22 10000 00 1 91 1 55 0 36 10292 01 2 22 1 61 0 61 10592 54 2 70 1 70 1 00 10901 84 3 17 1 84 1 33 11220 18 3 70 2 06 1 64 11547 82 4 25 2 35 1 90 11885 02 4 89 2 70 2 19 12232 07 5 36 3 08 2 28 12589 25 5 90 3 46 2 44 12956 87 6 47 3 79 2 68 13335 21 7 13 4 07 3 06 1...

Страница 196: ... 1 kHz 26 120 26 120 26 120 32 120 26 120 26 120 26 120 29 123 50 123 4 kHz 26 121 26 119 26 119 32 120 26 121 26 119 26 119 29 124 50 123 8 kHz 26 119 26 117 26 117 32 120 26 119 26 117 26 117 29 123 50 120 12 5 kHz 26 115 26 114 26 114 32 120 26 115 26 114 26 114 29 118 50 117 Table C 5 9 Linear operating range HIGH with Airport filter for the sinusoidal signal and microphone sensitivity 35 mV P...

Страница 197: ...0 deg incidence angle 251 19 0 10 0 02 0 12 258 52 0 06 0 02 0 08 266 07 0 03 0 02 0 05 273 84 0 02 0 02 0 04 281 84 0 03 0 02 0 05 290 07 0 05 0 02 0 07 298 54 0 07 0 02 0 09 307 26 0 08 0 03 0 11 316 23 0 09 0 03 0 12 325 46 0 09 0 03 0 12 334 97 0 08 0 03 0 11 344 75 0 07 0 03 0 10 354 81 0 05 0 03 0 08 365 17 0 03 0 04 0 07 375 84 0 01 0 04 0 05 386 81 0 03 0 04 0 01 398 11 0 06 0 04 0 02 409 ...

Страница 198: ...68 34 0 15 0 12 0 03 687 86 0 16 0 13 0 03 707 95 0 17 0 13 0 04 728 62 0 20 0 14 0 06 749 89 0 24 0 15 0 09 771 79 0 28 0 16 0 12 794 33 0 30 0 16 0 14 817 52 0 30 0 17 0 13 841 40 0 31 0 18 0 13 865 96 0 32 0 19 0 13 891 25 0 35 0 20 0 15 917 28 0 36 0 21 0 15 944 06 0 36 0 22 0 14 971 63 0 36 0 23 0 13 1000 00 0 36 0 25 0 11 1029 20 0 38 0 26 0 12 1059 25 0 38 0 27 0 11 1090 18 0 39 0 28 0 11 1...

Страница 199: ...511 89 0 45 0 49 0 04 2585 23 0 38 0 46 0 08 2660 73 0 32 0 43 0 11 2738 42 0 29 0 40 0 11 2818 38 0 36 0 35 0 01 2900 68 0 39 0 31 0 08 2985 38 0 33 0 25 0 08 3072 56 0 15 0 19 0 04 3162 28 0 02 0 13 0 15 3254 62 0 05 0 06 0 11 3349 65 0 03 0 02 0 05 3447 47 0 05 0 10 0 15 3548 13 0 09 0 19 0 10 3651 74 0 28 0 28 0 00 3758 37 0 40 0 38 0 02 3868 12 0 42 0 48 0 06 3981 07 0 50 0 58 0 08 4097 32 0 ...

Страница 200: ...07 0 09 0 16 9172 76 0 20 0 07 0 13 9440 61 0 32 0 28 0 04 9716 28 0 41 0 53 0 12 10000 00 0 51 0 79 0 28 10292 01 0 76 1 03 0 27 10592 54 0 96 1 24 0 28 10901 84 1 20 1 40 0 20 11220 18 1 34 1 53 0 19 11547 82 1 59 1 66 0 07 11885 02 2 04 1 86 0 18 12232 07 2 64 2 20 0 44 12589 25 3 49 2 72 0 77 12956 87 4 41 3 45 0 96 13335 21 5 53 4 33 1 20 13724 61 6 55 5 27 1 28 14125 38 8 23 6 14 2 09 14537 ...

Страница 201: ...AN 971W with SA 271 Typical compensated frequency response for the 0 deg incidence angle 251 19 0 10 0 02 0 12 258 52 0 06 0 02 0 08 266 07 0 03 0 02 0 05 273 84 0 02 0 02 0 04 281 84 0 03 0 02 0 05 290 07 0 05 0 02 0 07 298 54 0 07 0 02 0 09 307 26 0 08 0 03 0 11 316 23 0 09 0 03 0 12 325 46 0 09 0 03 0 12 334 97 0 08 0 03 0 11 344 75 0 07 0 03 0 10 354 81 0 05 0 03 0 08 365 17 0 03 0 04 0 07 375...

Страница 202: ... 13 0 11 0 02 649 38 0 14 0 11 0 03 668 34 0 15 0 12 0 03 687 86 0 16 0 13 0 03 707 95 0 17 0 13 0 04 728 62 0 20 0 14 0 06 749 89 0 24 0 15 0 09 771 79 0 28 0 16 0 12 794 33 0 31 0 16 0 15 817 52 0 31 0 17 0 14 841 40 0 32 0 18 0 14 865 96 0 33 0 19 0 14 891 25 0 36 0 20 0 16 917 28 0 37 0 21 0 16 944 06 0 37 0 22 0 15 971 63 0 37 0 23 0 14 1000 00 0 37 0 25 0 12 1029 20 0 39 0 26 0 13 1059 25 0 ...

Страница 203: ...38 0 54 0 16 2371 37 0 42 0 53 0 11 2440 62 0 47 0 51 0 04 2511 89 0 47 0 49 0 02 2585 23 0 40 0 46 0 06 2660 73 0 34 0 43 0 09 2738 42 0 31 0 40 0 09 2818 38 0 38 0 35 0 03 2900 68 0 41 0 31 0 10 2985 38 0 36 0 25 0 11 3072 56 0 18 0 19 0 01 3162 28 0 01 0 13 0 12 3254 62 0 02 0 06 0 08 3349 65 0 06 0 02 0 08 3447 47 0 08 0 10 0 18 3548 13 0 06 0 19 0 13 3651 74 0 25 0 28 0 03 3758 37 0 37 0 38 0...

Страница 204: ...0 06 0 18 0 12 8659 64 0 04 0 17 0 21 8912 51 0 20 0 09 0 29 9172 76 0 35 0 07 0 28 9440 61 0 49 0 28 0 21 9716 28 0 60 0 53 0 07 10000 00 0 71 0 79 0 08 10292 01 0 97 1 03 0 06 10592 54 1 19 1 24 0 05 10901 84 1 44 1 40 0 04 11220 18 1 58 1 53 0 05 11547 82 1 85 1 66 0 19 11885 02 2 31 1 86 0 45 12232 07 2 92 2 20 0 72 12589 25 3 78 2 72 1 06 12956 87 4 67 3 45 1 22 13335 21 5 76 4 33 1 43 13724 ...

Страница 205: ...ctional response for SLM Class SVAN 971 with microphone ACO 7052E preamplifier SV 18 and outdoor microphone kit SA 271 for specified frequencies Total directional characteristics The round charts show the directional characteristic and the charts below shows the errors for particular angles 250 Hz 315 Hz ...

Страница 206: ...SVAN 971 User Manual Appendixes 206 400 Hz 500 Hz 630 Hz 800 Hz 1000 Hz 1250 Hz ...

Страница 207: ...SVAN 971 User Manual Appendixes 207 1600 Hz 2000 Hz 2240 Hz 2500 Hz 2800 Hz 3150 Hz ...

Страница 208: ...SVAN 971 User Manual Appendixes 208 3550 Hz 4000 Hz 4500 Hz 5000 Hz 5600 Hz 6300 Hz ...

Страница 209: ...SVAN 971 User Manual Appendixes 209 7100 Hz 8000 Hz 8500 Hz 9000 Hz 9500 Hz 10000 Hz ...

Страница 210: ...6 0 18 0 19 0 2 0 19 500 0 03 0 05 0 07 0 08 0 1 0 1 0 1 0 1 0 1 0 09 630 0 03 0 04 0 04 0 05 0 05 0 05 0 06 0 06 0 06 0 04 800 0 0 01 0 04 0 08 0 12 0 15 0 17 0 17 0 15 0 13 1000 0 0 01 0 01 0 02 0 01 0 05 0 1 0 13 0 13 0 09 1250 0 01 0 06 0 12 0 19 0 23 0 23 0 21 0 2 0 22 0 21 1600 0 02 0 06 0 09 0 12 0 14 0 17 0 18 0 15 0 04 0 04 2000 0 01 0 03 0 12 0 27 0 42 0 46 0 45 0 31 0 31 0 26 2240 0 22 ...

Страница 211: ...24 0 22 0 12 2000 0 13 0 33 0 34 0 43 0 57 0 57 0 42 0 26 0 28 0 55 2240 0 41 0 57 0 54 0 5 0 62 0 61 0 25 0 08 0 08 0 45 2500 1 51 1 2 1 24 1 1 1 2 1 19 0 84 0 45 0 55 1 2800 1 45 1 23 1 3 1 02 1 32 1 32 0 79 0 48 0 81 1 35 3150 1 5 1 12 1 05 1 04 0 79 1 05 0 92 0 28 0 17 0 8 3550 1 68 1 03 0 72 0 72 0 56 0 76 0 54 0 16 0 19 1 05 4000 1 37 0 83 0 48 0 53 0 31 0 49 0 36 0 71 0 7 0 64 4500 0 78 0 5...

Страница 212: ...1 11200 1 93 1 43 1 01 1 13 1 45 1 41 1 68 1 82 2 21 2 56 11800 1 71 1 36 0 62 1 2 1 41 1 43 1 48 2 03 2 4 2 62 12500 2 32 1 75 0 81 0 92 1 24 1 21 1 56 2 22 2 56 2 88 f Hz 300 310 310 320 320 330 330 340 340 350 350 360 250 0 14 0 12 0 09 0 07 0 04 0 01 315 0 26 0 23 0 17 0 13 0 08 0 03 400 0 01 0 02 0 02 0 02 0 02 0 01 500 0 22 0 18 0 15 0 11 0 07 0 03 630 0 2 0 17 0 13 0 09 0 05 0 14 800 0 26 0...

Страница 213: ... frequency weighted sound pressure with the weighting filter W Sound pressure is expressed in pascals Pa t pW Instantaneous frequency and time weighted sound pressure with the weighting filter W and time constant calculated from the equation t t d e p 1 t p 2 W W where variable of integration t r Instantaneous sound pressure depends on the RMS Integration parameter Exp n Integratio RMS Lin n Integ...

Страница 214: ...nd level a function of time depends on the selected threshold level In case None option is selected t L t Ld In other cases when Threshold Level is not set to none and equal to 60 dB or up to 90 dB T T d L t L L t L t L t L for for D 2 DEFINITIONS AND FORMULAS OF THE SLM RESULT The instrument calculates the sound measurement results for three profiles The calculation flow diagram for one profile i...

Страница 215: ... time weightings F S I symbols are LAF LAS LCF LCS etc 2 0 2 W p t p log 10 L L A C Z eq Time averaged equivalent continuous sound level Leq expressed in dB for frequency weightings A C Z symbols are LAeq LCeq and LZeq In principle time weighting is not involved in a determination of time averaged sound level Time averaged sound level is calculated for current time period of the measurement T T 0 ...

Страница 216: ...or Td 0 Te 0 Tn 0 e T 2 0 W e dt p t r T 1 log 0 1 dB 5 Le Ln Ln is calculated for Td 0 Te 0 Tn 0 n T 2 0 W n dt p t r T 1 log 0 1 dB 10 Ln Lde Lde is calculated for Td 0 Te 0 Tn 0 10 Le 10 Ld 10 4 10 12 4 12 1 log 10 Lde Len Len is calculated for Td 0 Te 0 Tn 0 10 Ln 10 Le 10 8 10 4 8 4 1 log 10 Len Lnd Lnd is calculated for Td 0 Te 0 Tn 0 10 Ld 10 Ln 10 12 10 8 12 8 1 log 10 Lnd Lden Lden is cal...

Страница 217: ...s the quantity of noise received by the worker during exposure time DOSE T T dt 10 T 100 DOSE Pr e T 0 q L t L c d LAV The LAV result is the average level of the acoustic pressure for the given time period of the measurement T 0 q t L dt 10 T 1 log q LAV d SEL8 The SEL8 result is the SEL result corresponding to the integration time equal to 8 hours The SEL8 result is calculated on the base of the ...

Страница 218: ... case the time period is below 8 hours the TWA is less than the LAV In case the time period is more than 8 hours the TWA is greater than the LAV PrTWA The Projected Time Weighted Average is calculated from the measured LAV taking THRESHOLD LEVEL into account and the exposure time Lc a The C A measurement is an Leq that enhances the low frequency components of the sound signal It is the result of s...

Страница 219: ...ae j 1 k k j L P L t L P The cumulative density function expressed by the equation is directly used to determine so called statistical levels Lnn or position parameters of the distribution j j L t L P 1 L t L P The Lnn is the certain boundary level surpassed by the temporary noise level values in not more than nn of the observation period Example Let us assume that L35 is equal to 76 8 dB It means...

Страница 220: ...SVAN 971 User Manual Appendixes 220 ...

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