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116 

     SVAN 977C User Manual 

13  STI CALCULATIONS 

– STIPA 

13.1  I

NTRODUCTION

 

The  Speech  Transmission  Index  (STI)  is  applied  in  the  deterioration  of  the  speech  intelligibility  induced  by  the 
transmission channel. The STI method involves the use of a test signal applied to the transmission channel, and an 
analysis of the received test signal. The speech transmission quality of the channel is determined and expressed in 
values from 0 to 1 in the form of STI. Using the obtained STI value, it is possible to determine the potential speech 
intelligibility. 

The applications of STI include evaluation of sound reinforcement and emergency systems, communication channels, 
speech intelligibility, communication in rooms and auditoria, etc. 

STIPA (

speech transmission index for public address systems)

 is a STI derivative approach that was developed 

for fast measurements of electro-acoustic and acoustic environments effects that affect the speech intelligibility 

in the room acoustics and/or public address systems

. 

STIPA calculations are realized in SVAN 977C in accordance with IEC 60268-16:2011. 

In  addition  to  the  fact  that  measurements  can  be  made  using  only  SVAN  977C,  Svantek  also  provides  an 
application for mobile devices (smartphone, tablet) with Android 7.0 platform or higher, which performs STIPA 
measurements using SVAN 977C but has a more convenient user interface. 

 

Note: In addition to the fact that measurements can be made using only SVAN 977C, Svantek also 
provides  an  application  (BA Assistant)  for  mobile  devices  (smartphone,  tablet)  with  Android  7.0 
platform  or  higher,  which  performs  STIPA  measurements  using  SVAN  977C  but  has  a  more 
convenient user interface (see BA Assistant User Manual).  

13.2  STI

 METHOD BACKGROUND 

 

The  STI  method  is  based  on  measurements  of  the  STI  test  signal  comprising  seven  octave  band  noise  signals 
corresponding with 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 echoes or noise) by means 
of omnidirectional microphone. 

The STI method determines the modulation transfer function 

m

(

F

) 

– reduction in the modulation depth for modulation 

frequency - of the transmission channel for the seven octave bands. The RMS level of each octave-band carrier 
matches  the  relative  level  of  the  average,  long  term  spectrum  of  speech  material.  Each  octave  band  has  a 
contribution  to  speech  intelligibility  which  is  weighted  according  to  that  band.  Using  the  weighted  sum  of  these 
transmission index values, the overall STI value for the transmission channel is determined.  

STIPA method uses two modulation frequencies per octave band that 

are generated simultaneously giving a 

total of 14 modulation indices

. 

13.3  S

ELECTING THE 

STIPA

 FUNCTION

 

To  activate  the 

STIPA 

function,  select  the 

STIPA 

position 

in

 

the 

Measurement Function 

list  and  press 

<ENTER>

. 

 

<ENT> 

 

 

Note: The STIPA function is optional and should be unlocked by entering the activation code in the 
text editor screen, which is opened after first attempt to select this function. Once unlocked this option 
will be ready to use permanently.  

Содержание Shawcity SVAN 977C

Страница 1: ...USER MANUAL SVAN 977C SOUND VIBRATION ANALYSER Warsaw 2021 01 15 Rev 1 00 Copyright 2021 SVANTEK All rights reserved...

Страница 2: ...registered marks in this manual belong to their respective manufacturers Microsoft and Windows are registered trademarks of Microsoft Corporation The Bluetooth word mark and logos are registered trad...

Страница 3: ...9 2 11 Downloading and uploading files 33 2 12 Activating optional functions 33 3 MEASUREMENT FUNCTIONS AND CALIBRATION Function 34 3 1 Selecting instrument mode Mode 34 3 2 Activating measurement fun...

Страница 4: ...ms 60 5 CONFIGURING DATA VIEWING Display 61 5 1 Enabling views Display Modes 61 5 1 1 Running SPL view 62 5 1 2 Single Profile view 62 5 1 3 Combined views 63 5 1 4 Logger view 65 5 1 5 Spectrum view...

Страница 5: ...ing units for vibration results Vibration Units 88 8 5 Activating warnings Warnings 88 9 PRINTING REPORTS Report 90 10 1 1 AND 1 3 OCTAVE ANALYSER 93 10 1 Selecting 1 1 Octave or 1 3 Octave function 9...

Страница 6: ...on process 117 13 4 1Measured results 117 13 4 2Project structure 119 13 4 3Results averaging 120 13 4 4STIPA settings 120 13 4 5Considering ambient noise distortions 122 13 4 6STIPA measurements 123...

Страница 7: ...216 B 2 1 4 Record with the breaks account PAUSE in the results registration 216 B 2 1 5 Record with the wave file name 216 B 2 1 6 Record with Summary Results 216 B 2 1 8 Record with METEO data 217...

Страница 8: ...definitions VLM mode 326 D 2 2 Definitions and formulas of the VLM result 326 D 3 Statistical levels Ln definition 327 APPENDIX E REVERBERATION TIME CALCULATIONS 329 E 1 Introduction 329 E 2 Definitio...

Страница 9: ...Combined view 64 Communication ports 78 Complex parameter 23 Configuration mode 22 Control keys 18 D Data port 85 Data protocol 84 Day time limits 45 Decay 109 Decay method 112 Decimal mark 70 100 De...

Страница 10: ...ns 23 List of parameters 22 Logger 30 31 48 49 Logger name 50 Logger results 51 95 104 Logger split 50 Logger step 48 50 95 104 Logger trigger 52 Logger view 66 70 Logging 48 95 104 Low range 58 M Mai...

Страница 11: ...w 63 Single timer 59 Slope trigger 45 55 Slow 48 SMS 84 85 Sound analyser 13 Sound level meter 13 Sound meter 35 Source type 81 Spectrum 57 98 105 Spectrum settings 95 Spectrum statistics 51 Spectrum...

Страница 12: ...e and FFT as optional functions The frequency analysis is logged together with the time history of sound or vibration meter results Time domain waveform signal recording on the SD card is available as...

Страница 13: ...or public address systems 1 2 SVAN 977C AS VIBRATION LEVEL METER ANALYSER General Vibration measurements acceleration velocity and displacement meeting ISO 20816 1 2016 standard in the frequency rang...

Страница 14: ...rproof SA 47 carrying bag for SVAN 977C and accessories fabric material SV 55 interface RS 232 for SVAN 977C SV 80 general purpose vibration accelerometer 100 mV g 10 mV ms 2 SC 27 coiled cable for ac...

Страница 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 differe...

Страница 16: ...977C is supplied disassembled so the user should mount the MK 255 microphone and SV 12L preamplifier on his own It doesn t matter which elements will be assembled first the microphone with the preamp...

Страница 17: ...m jack 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 on this socket This signal...

Страница 18: ...essed 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...

Страница 19: ...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 k...

Страница 20: ...ing this time the manufacturer logo the name of the instrument and the firmware version Then it enters the screen with the list of settings from which you can select the required one and confirm the s...

Страница 21: ...tch between views using the keys pressed together with Alt Starting measurement To start measurement press the Start key The icon will appear and the measurement will be performed with the current ins...

Страница 22: ...pressing the Menu Shift ENTER key The main Menu list contains the following sections Function Measurement Display File Instrument Auxiliary Setup and Report Recent Items list Double pressing of the Me...

Страница 23: ...ll values in the same line with the key pressed with Shift Complex parameters For complex parameters consisting of more than one value field like Start Hour or Start Date you should first select the f...

Страница 24: ...ght position ENT Exit the virtual keyboard with the key To confirm changed text press ENTER ENT The above example shows the edition of the file name which may consist only uppercase letters Some texts...

Страница 25: ...Instrument Battery has special view and special icon reflects the powering state When the instrument is powered from the internal batteries the battery icon is displayed on the top of the screen and t...

Страница 26: ...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 T...

Страница 27: ...on is displayed when the RS232 port is activated USB icon is displayed when there is a successful USB connection with the PC logging icon is presented when current measurement results are logged into...

Страница 28: ...range icon is displayed when the GPRS function is switched on and there is no cable connection with the modem and therefore no range or wireless icon is displayed when the wireless transmission GPRS m...

Страница 29: ...he setup files are stored in the predefined directory SETUP Other special files logs advanced alarms settings are stored in the predefined SYSTEM directory The SD Card memory is activated automaticall...

Страница 30: ...er is equal to the maximum number in the set of files with the same prefix For example if there are files with names L0 L16 and L29 the counter value is 29 The number of the new automatically created...

Страница 31: ...Logger Setup the automatic saving of the measurement data so called Summary Results is switched off too In such a case Summary Results for the last cycle can be saved only manually or Note If Logger...

Страница 32: ...cally in the SD Card memory To enable automatic saving next conditions should be fulfilled 1 SD card should be inserted and there should be enough space on it 2 The wave recording should be switched o...

Страница 33: ...sic functions to perform measurements in accordance with most international standards and methods For more complex tasks you have the possibility of expanding the basic functions of the instrument wit...

Страница 34: ...1 3 Octave FFT etc 3 2 ACTIVATING MEASUREMENT FUNCTIONS MEASUREMENT FUNCTION The main function of the instrument is the measurement of Sound pressure or Vibration acceleration broad band levels Level...

Страница 35: ...practice to check the instrument measurement channel before and after measurements Due to implemented automatic calibration the instrument can perform the sound calibration automatically when the cal...

Страница 36: ...keys do not operate but it is possible to stop the measurement using the Start Stop key System check is considered as successful if its result Cal Result does not differ from the calibration level by...

Страница 37: ...ing the key in relation to the nominal value of 10 0 mV ms 2 For accelerometers with sensitivity less than 10 0 mV ms 2 the calibration factor will be positive For accelerometers with sensitivity over...

Страница 38: ...e Reasons for unstable results are as follows the calibrator is not properly attached to the instrument there are external acoustic disturbances such as high noise levels close by the calibrator or th...

Страница 39: ...results are as follows the accelerometer is not properly attached to the calibrator there are external disturbances the calibrator or the measurement channel the accelerometer or the instrument itsel...

Страница 40: ...ess if the difference between the Calibration Level value set up in the Calibration By Measurement screen and the measured calibrator SPL level is in the range 5dB During the calibration measurement t...

Страница 41: ...se allowing you to set the ambient noise levels This position appears in the STIPA function Compensation allowing you to switch on the required compensation filter Range allowing you to select the cor...

Страница 42: ...ill 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 Infinite integration period The Int...

Страница 43: ...integration for the 8 hour period from the measurement start and second integration for the 8 hour period from the end of the first integration At the end of each cycle the 8 hours LEQ results will be...

Страница 44: ...in seconds for example is equal to 50s the result name will have letter s LR50s to make it different from 50 minutes LR result LR50 Default values 30 m and 1 h Note In case of vibration measurements p...

Страница 45: ...n 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 m...

Страница 46: ...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 conditio...

Страница 47: ...d measurements or RMS Ovl Peak P P for Vibration measurements as well as 1 1 octave 1 3 octave or FFT spectra with Total results and meteo results are measured and saved in the file with the step defi...

Страница 48: ...er 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...

Страница 49: ...ited name already exists in the memory The instrument waits then for your reaction any key should be pressed except Shift or Alt ENT Splitting logger files The Split position enables splitting the dat...

Страница 50: ...be activated in Display Modes and therefore doesn t appear on the display When Logger is enabled and results for logging selected the logger plot will be available in measurement views Alt 4 4 3 Selec...

Страница 51: ...rve icon or 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...

Страница 52: ...type normal or Point and define markers for triggering wave recording Trig column ENT Name edition is performed in the text editor screen after pressing the key together with Alt Alt The Trig column...

Страница 53: ...ording trigger which can be disabled Off or enabled by selecting the trigger type Slope Slope Level Level External Integr Period and Int Period Split Slope trigger The Slope Slope trigger starts a sig...

Страница 54: ...me a trigger condition appears recording will be prolonged for another Recording Time from the moment of that trigger condition and so on Note When a signal recording is waiting for the level trigger...

Страница 55: ...el The threshold Level can be set with 1 dB steps in the range from 24 dB to 136 dB in the sound mode and from 1 mm s2 60 dB to 10 km s2 200 dB in the vibration mode Checking the trigger condition The...

Страница 56: ...stics of the outdoor filters depend on the dominating sound incidence angle environmental monitoring incidence angle 90 deg or airport monitoring incidence angle 0 deg The frequency characteristics of...

Страница 57: ...on code in the text editor screen which is opened during first attempt to open this position Once unlocked this option will be ready to use permanently To perform the RPM measurement the tacho probe s...

Страница 58: ...T S INTERNAL TIMER TIMER The Timer function is used for programming the automatic measurement start and turning the instrument on if it was turned off at a given time and day of a week The Timer posit...

Страница 59: ...ing 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 10 1 Example of timer execu...

Страница 60: ...ia SvanPC or via SvanNET web service since this function was designed for the SV 277 monitoring stations If you enable advances alarms the alarm icon appears and the instrument will generate alarms ac...

Страница 61: ...nalyser functions in the Vibration mode Screen Setup allowing you to set up the brightness and switch on off the energy saver function 5 1 ENABLING VIEWS DISPLAY MODES The Single Profile view is alway...

Страница 62: ...yed in a large format Single Profile view fields 1 Logger file name 2 Profile number 3 Value of the measured result 4 Weighting filter Z A C B U UA LF for Sound measurements or HP HP1 HP3 HP10 Vel1 Ve...

Страница 63: ...Result name Spl Leq SEL Lden LEPd Ltm3 LTeq Ln EX SD LR1 LR2 Ovl Peak Max Min for Sound measurements or RMS Ovl Peak P P for Vibration measurements 3 Detector type Linear or Imp Fast Slow for Sound me...

Страница 64: ...er A B C Z U UA LF 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 skip...

Страница 65: ...ew mode is not active 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...

Страница 66: ...function of exceeding the noise level during the measurement period The X axis defines the probability of exceeding the noise level statistical level Ln and the axis Y defines the calculated noise lev...

Страница 67: ...rument Communication Ports it is possible to activate the GPS screen which shows the GPS status co ordinates etc transmitted to the instrument from the SV 58_H GPS module connected to the Serial socke...

Страница 68: ...es 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...

Страница 69: ...n make necessary adjustments and return to the Logger view after confirmation of the performed changes with the ENTER key ENT 5 4 CONFIGURING DISPLAY BRIGHTNESS AND POWER SAVER SCREEN SETUP The Screen...

Страница 70: ...r 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 of...

Страница 71: ...list the instrument will generate warning The instrument creates files of the next types Logger files with measurement results extension SVL Wave files with time waveform records extension WAV Setup f...

Страница 72: ...the new directory or file To do this enter the directory in which the new element will be created press ENTER at the New Directory or New File position and edit the new directory or file name in the...

Страница 73: ...record counter is displayed in the same line with the file name To see next cycle data select the record counter position with the key and then change the record number with the key pressed together w...

Страница 74: ...instrument will return to the editor screen ENT 6 1 6 Viewing information about files directories Info You can view information about a file or a directory To do this select the desired file director...

Страница 75: ...name a setup file ENT Loading setup files Loading the setup file means that the settings saved in this file will be loaded to the instrument as current settings So if you press the Start Stop key the...

Страница 76: ...e of the Shift and the Start Stop keys Multifunction I O allowing you to select the available functionality of the I O port RTC allowing you to set the Real Time Clock Wireless Transfer allowing you t...

Страница 77: ...wo parameters should be defined transmission speed Baud Rate 1200 2400 4800 9600 19200 38000 57600 or 115200 bits s and the time limit during which the data transfer should be performed Time Out The t...

Страница 78: ...source exceeds this level ENT The Threshold parameters appear in the screen when Power Off and or Power On parameters are enabled This screen appears automatically after switching on the instrument wh...

Страница 79: ...G PARAMETERS OF I O PORT MULTIFUNCTION I O The Multifunction I O position allows you to select the available functionality of the I O port 3 5 mm jack socket ENT The I O jack socket can be used as I O...

Страница 80: ...ter defines which level of the signal should be treated as a valid one Low or High negative or positive logic Alarm trigger result The Source parameter defines the result the level of which should be...

Страница 81: ...L TIME CLOCK 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...

Страница 82: ...et the parameters of data transmission and the Network Reset position to carry out the factory setting of the network ENT 7 9 1 Selecting network type Network In the Network screen you can disable Off...

Страница 83: ...nnection selecting this option will make the device attempt to reconnect the modem in case of errors or sudden disconnection Reconnection Delay defines time between each reconnection attempts TCP IRT...

Страница 84: ...u to enter up to 20 characters of APN name of the SIM card used with the modem APN User allows you to enter up to 20 characters of user s name used for verification by the SIM card used with the modem...

Страница 85: ...ail message will be sent E mail Subject allows you to enter up to 20 characters of the message s subject E mail Message allows you to enter up to 20 characters of additional text which will be appende...

Страница 86: ...INTRODUCING INSTRUMENT NAME UNIT NAME The Unit Name position allows you to edit the instrument s name in the text editor screen The instrument name is used in the SvanNET web service and SvanPC softwa...

Страница 87: ...erface If after turning the instrument on an unknown language interface appears on the display you can reset the instrument with four Shift Enter Alt Start keys pressed together The instrument will co...

Страница 88: ...s position allows you to activate messages which will be displayed during the normal operation of the instrument By default all warnings are enabled ENT Saving the measurement results in a file If the...

Страница 89: ...list of parameters but exiting the screen with the ESC key Confirmation of instrument turning off If the Power Off warning is enabled the instrument will ask for confirmation before switching off Low...

Страница 90: ...ate can be selected from the following available values 1200 2400 4800 9600 19200 38000 57600 or 115200 bits s The transmission speed should be the same as in the connected printer to ensure successfu...

Страница 91: ...56 40dB LAFTeq 1 56 40dB EX 1 56 38dB SD 1 0 01dB LR30 1 LR60 1 Ovl 1 0 0 Peak 2 65 37dB Max 2 54 62dB Min 2 54 57dB Spl 2 54 62dB Leq 2 54 60dB SEL 2 54 60dB Ld 2 54 60dB LEPd 2 54 60dB Ltm3 2 54 62...

Страница 92: ...B L10 2 54 9dB L20 2 54 8dB L30 2 54 7dB L40 2 54 6dB L50 2 54 5dB L60 2 54 4dB L70 2 54 3dB L80 2 54 2dB L90 2 54 1dB L95 2 54 0dB L10 3 57 9dB L20 3 57 8dB L30 3 57 7dB L40 3 57 6dB L50 3 57 5dB L60...

Страница 93: ...sides results for bands three Total values are measured and displayed as additional three bars on the spectrum graph Parameters for Total values e g filters are set by default and cannot be changed No...

Страница 94: ...he calibration factor see Chapter 4 6 10 2 3 Logging of 1 1 or 1 3 octave spectra Logging Spectra can be logged in a logger file with two steps Integration Period step and or Logger Step For logging 1...

Страница 95: ...Hz o Ultra 1 31 5k 16 filters with centre frequencies from 1 Hz to 31 5 kHz 1 3 Octave o Audio 20 20k 31 filters with centre frequencies from 20 Hz to 20 kHz o Ultra 0 8 40k 48 filters with centre fre...

Страница 96: ...the Full band HP class 1 according to IEC 61672 1 2013 For sound and vibration analysis with the Ultra band HPE ultra band filter The filter characteristics are given in Appendix C RMS detector The D...

Страница 97: ...imum Spectrum Type allowing you to change the spectrum type presented on the display acceleration velocity or displacement This position appears in the vibration modes 10 3 1 Presentation of 1 1 or 1...

Страница 98: ...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 relat...

Страница 99: ...ra to be viewed Spectrum View In the Spectrum View screen you can select the different spectra to be viewed in the Spectrum display mode instantaneous averaged maximum or minimum ENT In the Type posit...

Страница 100: ...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...

Страница 101: ...essed together with Alt Alt 3 Select the Ln field in the Ln spectrum view with the key 4 Select the required Ln result with the key pressed together with Alt Alt 5 Shift the cursor on the required 1 1...

Страница 102: ...ent function during a running measurement In this case the instrument displays for about 2 seconds the message Measurement in Progress To change the current function the measurement must be stopped 11...

Страница 103: ...FFT function opens the screen in which you can select parameters of the FFT analysis frequency band Band pre weighting filter Filter weighting window Window number of lines Lines and averaging type A...

Страница 104: ...allowing you to switch on the Spectrum view 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...

Страница 105: ...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 s...

Страница 106: ...ewed Spectrum View In the Spectrum View screen you can select the different spectra to be viewed in the Spectrum display mode Averaged Instantaneous Max or Min When the Averaged or Instantaneous spect...

Страница 107: ...pressing ENTER ENT 11 3 4 Changing spectrum type in Vibration modes Spectrum Type In the Spectrum Type screen which is available only in Vibration modes you can select the different types of vibration...

Страница 108: ...ulation part during which the reverberation time EDT RT20 RT30 and RTUser is calculated for the measured room response Note It is recommended to familiarize with Appendix E before proceeding This chap...

Страница 109: ...Hz 7 bands or 63Hz 16kHz 9 bands for 1 3 octave 50Hz 5kHz 21 bands or 50Hz 20kHz 27 bands The Recording Time parameter defines the recording time of the measurement data sound pressure level decay cur...

Страница 110: ...he field No x and press ENTER select in the confirmation screen Yes and press ENTER again ENT ENT The Noise Mar parameter defines the margin value to the calculated noise level for more detail see App...

Страница 111: ...a can be viewed as a Raw Data Smoothed Data or Integrated Data in case of the Impulse method You may also switch between different data view modes during measurement in the presentation mode For this...

Страница 112: ...tion time results During this process the messages Calculations and Reading Logger appear 8 To save results press the Save key or use the File menu option Note It is necessary to switch on the sound s...

Страница 113: ...ements 12 5 VIEWING RT60 RESULTS The RT60 measurement results for all 1 1 or 1 3 octave bands and three Total values can be viewed in three different view modes as 1 Table of EDT RT20 RT30 and User re...

Страница 114: ...plot 4 Central frequency of selected by cursor 1 3 octave band 5 Result value SPL for the cursor position 6 Name of the logger file 7 T1 marker position 8 Cursor position 9 RT60 method 10 Type of data...

Страница 115: ...ther with Alt Alt Changing cursor position When the field 14 is active you may change the cursor position with the key RT User reverberation time calculation 1 Select the band or one of the total leve...

Страница 116: ...performs STIPA measurements using SVAN 977C but has a more convenient user interface see BA Assistant User Manual 13 2 STI METHOD BACKGROUND The STI method is based on measurements of the STI test si...

Страница 117: ...a speech transmission channel ranging between 0 and 1 STI is calculated for individual measurements and averaged for the measurement point and for the area difference between maximum and minimum valu...

Страница 118: ...results screen presents summary results for the tested area o Averaged STI or CIS index with consideration of the Ambient noise distortions o standard deviation of measured STI indexes for the tested...

Страница 119: ...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 Directory P1 c...

Страница 120: ...in the left upper corner of the Measurement point screen and in the measurement points list of the Area points list screen 2 averaging of results for a tested area Averaged STI for the tested area is...

Страница 121: ...y created one as a directory 4 After creation of the new area or selection of the existed one press ENTER and the selected area name will be displayed in the Area line of the STIPA Settings screen ENT...

Страница 122: ...Source Calibration position defines the adjustment of the reference STIPA signal level to the level of a real voice signal in the tested area You should measure the LAeq of both signals and if the di...

Страница 123: ...values set in the Ambient noise table see Chapter 13 4 5 Note Pressing the Stop key during the measurement will break it without recording the measurement results 2 After measurement stop the Measurem...

Страница 124: ...e Noise soft key and in the Ambient noise screen change the values for the 1 1 octave bands Confirm made changes with the ENTER key ENT Note Do remember that any confirmed changes in the Ambient noise...

Страница 125: ...s smartphone tablet with Android 7 0 or higher which allows using SVAN 977A to perform building acoustics measurements among others speech intelligibility using the STIPA method After taking measureme...

Страница 126: ...mat which are appropriately grouped into the directories responsible for the projects areas sources points To download files use the SVAN Files window and select the appropriate folder with required d...

Страница 127: ...ng 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 cho...

Страница 128: ...3 5 4 Changing background noise values The cells with the background noise results are editable i e you can manually enter values for individual octaves just double click on the selected background no...

Страница 129: ...upper left corner of the view an Excel spreadsheet will automatically open with all the data visible on the view 2 Selecting cells in the table and using the copy paste option CTRL C or menu Edit Cop...

Страница 130: ...visibility of the SIM card address in the network public or private static or dynamic First and easiest option is to use the SvanNET web service which enables basic features for the user as instrumen...

Страница 131: ...GBSP You may exchange it with the high capacity card up to 32GB but before insertion the card must be formatted as FAT32 Note The originally supplied Kingston Industrial memory card has been tested by...

Страница 132: ...ew thread Then move the preamplifier outer sleeve in the direction to the instrument and tighten it to the screw thread Note Do not disconnect the preamplifier by turning the preamplifier body turn on...

Страница 133: ...ent USB interface Keeping pressed the ENTER and keys switch on the instrument the following message should appear on the unit s screen BOOTSTRAP v1 06 or higher Wait for the message USB on the unit s...

Страница 134: ...f the instrument see Chapter 15 4 In case the reset does not help call your Local Authorized Distributor or Svantek Service Office Should your SVANTEK professional measurement equipment need to be ret...

Страница 135: ...iation in the icon line of the display Level Meter SLM or VLM 1 1 Octave S 1 1 or V 1 1 1 3 Octave S 1 3 or V 1 3 FFT S FFT or V FFT RT60 S RT60 STIPA S STI Chapter 3 2 Level Meter Measurement Functio...

Страница 136: ...e type of the sound source used by the user two methods can be applied Impulse Response Method and Interrupted Noise Method Results are presented for 1 1 or 1 3 octave bands When the RT60 function is...

Страница 137: ...vel Level of the reference signal generated by used calibrator Chapter 3 3 4 3 3 5 Calibration Result Measured by the instrument reference signal level without calibration factor correction Chapter 3...

Страница 138: ...stantaneous value of a standard frequency weighted vibration acceleration velocity or displacement within the elapsed measurement time Appendix D D 1 2 D 2 2 Spl Sound Pressure Level the maximal value...

Страница 139: ...D D 1 2 Ln Statistical Noise Levels the certain boundary level surpassed by the temporary noise level values in not more than nn of the observation period Ln are calculated on the base of 100ms Leq re...

Страница 140: ...ndix D D 2 2 16 4 MEASUREMENT PARAMETERS Position Description Screen Reference Measurement Section of the Main Menu that enables selecting the measurement parameters in the screens General Settings Me...

Страница 141: ...tector Linear or Exponential The IEC 61672 1 2013 standard requires Linear integration without time weighting however in some countries old regulation refers to the Exponential RMS integration with st...

Страница 142: ...the profile Impulse Fast or Slow for sound results like Leq Lmax Lmin SEL LEPd Lden Spl Ltm3 and LTeq from 100ms to 10s for vibration results like RMS MAX Chapter 4 3 Appendix D D 1 2 Compensation Di...

Страница 143: ...es in sound modes depend on the settings in the Compensation Filer screen and in both sound and vibration modes on the calibration factor Chapter 4 6 Appendix C High High linear operating range for th...

Страница 144: ...trument 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 sto...

Страница 145: ...he user can define ten statistical levels named from N1 to N10 to be calculated displayed and saved in the files together with the main results Chapter 4 9 Appendix D D 4 Timer Screen that enables con...

Страница 146: ...d step or from 1 minute to 59 minutes with 1 minute step and up to 1 hour Chapter 4 4 1 Logger Name Position in the Logger Setup screen that enables defining the name of file in which Logger Results S...

Страница 147: ...vel Threshold level of Source for triggering condition fulfilment Chapter 4 4 4 Pre Period of additional logging before triggering condition fulfilment Chapter 4 4 4 Post Period of additional logging...

Страница 148: ...ing Slope Slope Level Level External Integr Period and Int Period Split If the instrument is waiting for the trigger condition which is checked with Trigger Period intervals the appropriate trigger ic...

Страница 149: ...recording start for Integration Period every time the measurement starts Chapter 4 4 6 Source Measured result that is compared with the threshold level for triggering Level measured in the first prof...

Страница 150: ...ge of 1 1 or 1 3 spectrum Depending on the function and mode of the instrument the frequency range can be selected for sound measurements Audio 31 5 16k Ultra 1 31 5k for 1 1 Octave and Audio 20 20k U...

Страница 151: ...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 Averaging Noise Mar Log...

Страница 152: ...hapter 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 Averaging Process of averaging of...

Страница 153: ...13 4 4 Area Position enabling selecting the catalogue in the instrument memory which contains Source catalogues Chapter 13 4 4 Source Position that enables selecting the catalogue in the instrument me...

Страница 154: ...11 Threshold Alarm condition type Alarm is generated if the selected result Leq Lpeak Lmax Lmin or sliding Leq for screens of 15 or 60 minutes exceeds the threshold level Chapter 4 11 Time Alarm cond...

Страница 155: ...ation 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 of one result in the upper part of the scree...

Страница 156: ...d Data view Presentation of the integrated raw decay curve Schroeder curve Chapter 12 5 Display Scale Screen that enables setting parameters of results presentation Scale Resolution Dynamics Grid and...

Страница 157: ...ch will be presented on the display and colours of their plots Chapter 5 3 Spectrum View Screen that enables selecting of types of spectra for displaying Averaged Instantaneous Max Min NR and NC Chapt...

Страница 158: ...cted in the Spectrum Type screen Chapter 10 3 4 11 3 4 Velocity Velocity spectrum which is displayed if it has been selected in the Spectrum Type screen Chapter 10 3 4 11 3 4 Displacement Displacement...

Страница 159: ...e instrument power source status Chapter 7 2 Communication Ports Screen that enables configuring the instrument communication ports GPS and Serial Port RS232 or Bluetooth Chapter 7 3 External Power Sc...

Страница 160: ...endix C Function Functionality of the Digital Out I O mode Trigger Pulse or Alarm Pulse Chapter 7 7 Appendix C Trigger Pulse Functionality of the Digital Out I O mode when digital signal used for trig...

Страница 161: ...igital Out I O mode defining the threshold level of the result to be monitored during the measurement If the result is greater than the alarm level the instrument will generate the alarm signal in the...

Страница 162: ...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 9 2 Sen...

Страница 163: ...which a communication socket will be configured for data exchange between the remote host and the station Chapter 7 9 3 Registration Port Parameter of the Modem Connection screen defining the port num...

Страница 164: ...enables configuring SMS service used for alarm notification Phone Number and Text Message Chapter 7 9 4 Phone Number Parameter of the SMS Option screen defining the phone number where the text messag...

Страница 165: ...with SMPT server Chapter 7 9 5 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 9 5 Recipient e mail Parameter of the...

Страница 166: ...ed and the relevant standards which the instrument fulfils Chapter 7 11 16 7 AUXILIARY PARAMETERS Name Description Screen Reference Auxiliary Setup Section in the Main Menu that enables customizing th...

Страница 167: ...167 SVAN 977C User Manual Warnings Screen that enables activating warning messages which are to be displayed during the normal operation of the instrument Chapter 8 5...

Страница 168: ...n 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 The following basic input output transmission types called functions...

Страница 169: ...iles i e results from the all profiles will be sent default value 1 2 or 3 one of the profile i e only results from the given profile will be sent rot rotation results rpm all rotations results will b...

Страница 170: ...value in dB h LR2 rolling Leq 2nd result c the value in dB L nn statistic levels c the value in dB O NR result c equal to 131 means that NR result exceeds the maximum value for which is defined i e 13...

Страница 171: ...counter MSB of the transmission counter data byte data byte Status Byte gives the information about the current state of the instrument D7 D6 D5 D4 D3 D2 D1 D0 where D7 0 means that overload does not...

Страница 172: ...voltage Response format 7 UV x xx where x xx USB voltage in V 7 RZ Get state of the Remote Control mode Response format 7 RZ x where x 0 Off x 1 On 7 RZ x Set state of the Remote Control mode where x...

Страница 173: ...D x Set windscreen compensation filter where x 0 Off x 1 On Response format 7 WD 7 DL Get day time limits Response format 7 DL x where x 0 day time limits is equal to 6h 18h x 1 day time limits is equ...

Страница 174: ...where n statistical level index 1 10 xn statistical level of index n 1 99 Response format 7 SL 7 LR Get Rolling Leq time values Response format 7 LR x1 m x2 m where x1 rolling time 1st value 1 59 if s...

Страница 175: ...x xx hardboot program version number 7 VB Get bootstrap program version Response format 7 VB x xx where x xx bootstrap program version number 7 IE Get IEPE current Response format 7 IE x where x 0 IE...

Страница 176: ...Response format 7 RT 7 RT hh mm ss DD MM YYYY Set current real time clock and date settings where hh mm ss time DD MM YYYY date Response format 7 RT 7 TZ Get Time Zone Response format 7 TZ m where m T...

Страница 177: ...te of the Results Not Saved warning where x 0 warning disabled x 1 warning enabled Response format 7 WS 7 WF Get state of the Ext Disk Free Space warning Response format 7 WF x where x 0 warning disab...

Страница 178: ...onse format 7 FT x where x 1 SD card is not available x 1 FAT16 x 2 FAT32 x 3 FAT12 7 NS Get SD card number of sectors sector 512 bytes Response format 7 NS x where x number of sectors in case of x 1...

Страница 179: ...rkers Response format 7 MR a1 a2 a3 a4 where a1 activity of the 1st marker 0 or 1 a2 activity of the 2nd marker 0 or 1 a3 activity of the 3rd marker 0 or 1 a4 activity of the 4th marker 0 or 1 7 MR n...

Страница 180: ...14 5 y 0 Power On functionality disabled y 1 Power On functionality enabled the instrument will be switched on after reaching the threshold level VOn VOn switch on threshold in V from 6 5 to 15 0 note...

Страница 181: ...offsetB offset the first byte to read an even number nB number of bytes to read an even number data binary data 1 D c this function returns the list of available disks in format D c disk1 disk2 disk3...

Страница 182: ...irect Input V V0 Off V1 On Measurement function M M1 Level Meter M2 1 1 Octave M3 1 3 Octave M6 FFT Range R R1 Low R2 High Filter type in profile n in SLM mode F F1 n Z filter for profile n F2 n A fil...

Страница 183: ...in profile n E6 n 5 0s detector in profile n E7 n 10 0s detector in profile n Logger type in profile n in VLM mode G Gx n x sum of the following flags 1 logger with Peak values in profile n 2 logger w...

Страница 184: ...e results of 1 x OCTAVE analysis in logger s file in SLM mode b b0 switched Off b8 logger with Leq spectrum Filter type in 1 x OCTAVE or FFT analysis in VLM mode i i0 HP filter Storing the results of...

Страница 185: ...gger step d dn n number in milliseconds 2 5 10 20 25 50 100 200 500 1000 dns n number in seconds 1 60 dnm n number in minutes 1 60 Logger Split Mode XA XA0 Off XA 1 Sync to the Integration Period XA15...

Страница 186: ...before the fulfilment of the triggering condition XQ XQx x number of records saved in logger before the fulfilment of the triggering condition nn 0 50 Logger Triggering Number of records taken into a...

Страница 187: ...ff Xo1 switched on Registration Mode GPRS Xw Xw0 switched off Xw1 normal Connection Request Packets Xw2 AS Address Server registration Xw3 Smart AS Address Server registration only if necessary Data P...

Страница 188: ...Text Message GPRS XXb XXbxxxxx xxxxx up to 20 characters permitted characters 0 9 a z and _ Send SMS GPRS XXc XXc0 Off XXc1 On Send e mail GPRS XXk XXk0 Off XXk1 On E mail SMTP Address GPRS XXd XXdxx...

Страница 189: ...er of the statistical analysis cf Table B 1 16 o header of the 1 x Octave analysis cf Table B 1 17 o header of the statistical analysis performed in 1 x Octave mode cf Table B 1 18 o header of the FFT...

Страница 190: ...001A value 4 15 Reserved reserved Table B 1 2 File header Word number Name Comment 0 0xnn01 01 nn header s length 1 4 FileName name of the file 8 characters 5 reserved 6 CurrentDate file creation date...

Страница 191: ...of calibration performed after the measurement cf App B 4 7 PostCalibrTime time of calibration performed after the measurement cf App B 4 8 PostCalibrFactor factor 100 dB of calibration performed aft...

Страница 192: ...ent with RTC 0 switched off 1 synchronization to 1 sec 1 synchronization to 1 min 15 synchronization to 15 min 30 synchronization to 30 min 60 synchronization to 1 hour 14 LeqInt detector s type in th...

Страница 193: ...de 0 Off 1 On VLM mode reserved 24 Compensation Filter SLM mode compensating filter for microphones 0 Off 1 Free Field 2 Diffuse Field 3 Outdoor Environment 4 Outdoor Airport VLM mode reserved 25 Volt...

Страница 194: ...iles splitting time 1 off 0 1439 Time in minutes Valid only if SplitMode is equal 1440 Table B 1 7 MEASUREMENT TRIGGER parameters Word number Name Comment 0 0xnn2B 2B nn block s length 1 TriggerMode t...

Страница 195: ...p is equal to logger time step cf Table B 1 21 Table B 1 9 Time domain signal recording parameters Word number Name Comment 0 0xnn31 31 nn block s length 1 RecordingMode mode 0 Off 1 Continuous 2 On T...

Страница 196: ...ment 2 on trigger 2 TriggerMode trigger mode 0 Off 1 recording on trigger SLOPE 2 recording on trigger SLOPE 3 recording on trigger LEVEL 4 recording on trigger LEVEL 6 recording on trigger GRAD 7 rec...

Страница 197: ...rd number Name Comment 0 0xnn2E 2E nn block s length 1 Mode mode 0 ANALOG OUT 1 DIGITAL IN 2 DIGITAL OUT 3 ANALOG IN 2 Function in case of DIGITAL IN 0 EXTERNAL TRIGGER in case of DIGITAL OUT 0 TRIG P...

Страница 198: ...in the case of SLM mode Word number Name Comment 0 0xnn05 05 id nn block s length 1 0x0307 used_profile profile s mask 2 0xmm06 06 id mm sub block s length 3 DetectorP 1 detector type in the 1st prof...

Страница 199: ...profile 0 IMPULSE 1 FAST 2 SLOW 16 FilterP 3 filter type in the 3rd profile 1 Z 2 A 3 C 5 B 17 BufferP 3 logger contents in the 3rd profile defined as a sum of 0 none 1 Peak 2 Max 4 Min 8 Leq 16 LR1...

Страница 200: ...filter type in the 2nd profile 0 HP 1 HP1 2 HP3 3 HP10 4 Vel1 5 Vel3 6 Vel10 7 VelMF 8 Dil1 9 Dil3 10 Dil10 21 Wh 11 BufferP 2 logger contents in the 2nd profile defined as a sum of 0 none 1 Peak 2 P...

Страница 201: ...ype of 3rd user filter 0 HIGHPASS 1 LOWPASS 2 BANDPASS 14 Rank 3 rank of 3rd user filter in the case of BANDPASS 4 in other cases 2 15 16 Lower pole 3 17 18 Upper pole 3 Table B 1 15 Marker parameters...

Страница 202: ...rofile 5 ClassWidth 1 class width 100 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 100 dB...

Страница 203: ...of TOTAL values 8 SpectrumFilter Spectrum filter 0 HP 1 Z 2 A 3 C 5 B 9 SpectrumRMSDetector spectrum RMS detector type 0 LINEAR 1 FAST 2 SLOW 10 SpectrumBand spectrum band 0 FULL 1 AUDIO Table B 1 18...

Страница 204: ...are approximate 0 40 kHz 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 13 Screen screen function 0 HANNING 1 RECTANGLE 2 FLAT TOP 3 KAISER BESSEL 14 ScreenFactor sc...

Страница 205: ...fTMillisec 1000 3 4 BuffLength logger length bytes 5 6 RecsInBuff number of records in the logger 7 8 RecsInObserv number of records in the observation period equal to number of records in the logger...

Страница 206: ...der range value in the 1st profile 18 ResultsFlags 1 results flags b1 if set to 1 overload occurred b5 b4 b3 type of the result Lden 000 Lden result is not available 001 Ld result 010 Le result 011 Ld...

Страница 207: ...cle cf Table B 1 23 18 53 ResExtra 1 LeqLF value in 0 01 dB Table B 1 24 Main results in VLM mode saved in Summary Results Record Word number Name Comment 0 0xnn07 07 nn block s length 1 0x0307 used_p...

Страница 208: ...3 2 P P value in the 3rd profile 100 dB 41 Result 3 3 Max value in the 3rd profile 100 dB 42 Result 3 4 reserved 43 Result 3 5 reserved 44 Result 3 6 RMS value in the 3rd profile 100 dB 45 Result 3 7...

Страница 209: ...le s mask 3 4 N number of spectra per averaging 5 FFT i values of i th FFT line and Total results 100 dB Table B 1 28 Results of the statistical analysis in profiles saved in Summary Results Record Wo...

Страница 210: ...m 1 Sub blockLength 2 NofClasses 2 242 2 3 Histogram nn 1 first counter for the last 1 x OCTAVE filter 4 5 Histogram nn 2 second counter for the last 1 x OCTAVE filter Table B 1 30 RPM results saved i...

Страница 211: ...max wind speed distribution vector number of elements 17 NofWindD ir 17 NofWindD ir NofWindMax 1 WindMax i WindMax i value 10 m s 17 NofWindD ir NofWindMa x NofWindAvg avg wind speed distribution vect...

Страница 212: ...RT60 averaged results Word number Name Comment 0 0x001C 1C id 00 block s length in the second word 1 BlockLength 7 N2_rt60_freq N1_rt60_freq 1 N_max_total 9 2 LowestFreq the lowest 1 3 OCTAVE frequen...

Страница 213: ...meters cf Table B 1 9 Wave file recording parameters cf Table B 1 10 Extended I O parameters cf Table B 1 11 Special settings for profiles cf Table B 1 12 Table B 1 13 RTF parameters cf Table B 1 14 M...

Страница 214: ...t from the second profile if the corresponding LOGGER position was active BufferP 2 in Table B 1 12 or Table B 1 13 up to six words are written SLM mode result1 Peak result depending on the value of B...

Страница 215: ...f 1 x OCTAVE analysis was selected as the measurement function and the LOGGER was active SpectrumBuff in Table B 1 6 the sequence of words is written Octave 1 Octave 2 Octave Noct NTot where Octave i...

Страница 216: ...0xggff 0xiihh 0xCAaa in which aa size of records bb cc dd ee ff gg hh ii 8 bytes name of wave file name B 2 1 6 Record with Summary Results The format of the data frame is as follows HS L optional D L...

Страница 217: ...gWindSpeed average wind speed 10 m s 5 WindDirection wind direction for max wind speed 0xFFFF if direction is unavailable 6 MaxWindSpeed max wind speed 10 m s ignored if WindDirection is unavailable 7...

Страница 218: ...THE SETUP FILE SvanPC file header cf Table B 1 1 File header cf Table B 1 2 Unit and software specification cf Table B 1 3 SETUP DATA cf Table B 1 34 File end marker cf Table B 1 35 B 4 DATE AND TIME...

Страница 219: ...le SA 22 windscreen Accessories available SV 55 RS 232 interface for SVAN 977C SA 277C outdoor microphone kit SC 26 extension cable for SV 12L TNC plug to TNC socket SA 15 power supply unit Measured q...

Страница 220: ...AS 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 80 25 103 25 117 30 120 23 80 25 103 25 117 26 83 50 120...

Страница 221: ...672 1 2013 standard for the Class 1 C filter Table C 1 3 Self generated noise for different weighting filters Electrical Acoustical compensated Weighting filter Range A C Z A C Z Low 12 dB 12 dB 17 dB...

Страница 222: ...7 36 120 36 134 39 100 71 137 500 Hz 36 133 36 136 36 137 42 137 36 133 36 136 36 137 39 136 71 140 1 kHz 36 137 36 137 36 137 42 137 36 137 36 137 36 137 39 140 71 140 4 kHz 36 138 36 136 36 136 42 1...

Страница 223: ...of calibrator s sound pressure If the calibrator has a different sound pressure than 114 dB the calibration levels must be accordingly adjusted Microphone MK 255 prepolarised free field condenser micr...

Страница 224: ...essary 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 ra...

Страница 225: ...effect Table C 1 1 SVAN 977C typical Free Field frequency characteristics and Case effect Frequency Typical MK 255 Free Field response Typical SVAN 977C Free Field response SVAN 977C Case effect Unce...

Страница 226: ...0 09 0 25 613 06 0 02 0 13 0 11 0 25 630 96 0 00 0 11 0 11 0 25 649 38 0 02 0 13 0 11 0 25 668 34 0 05 0 17 0 12 0 25 687 86 0 04 0 19 0 15 0 25 707 95 0 02 0 17 0 15 0 25 728 62 0 04 0 16 0 12 0 25 7...

Страница 227: ...0 28 0 25 2371 37 0 08 0 01 0 10 0 25 2440 62 0 12 0 35 0 24 0 25 2511 89 0 20 0 57 0 37 0 25 2585 23 0 21 0 38 0 17 0 25 2660 73 0 13 0 13 0 00 0 25 2738 42 0 16 0 11 0 27 0 25 2818 38 0 15 0 22 0 37...

Страница 228: ...12 51 0 60 0 33 0 26 0 35 9172 76 0 76 0 54 0 21 0 35 9440 61 0 65 0 70 0 05 0 35 9716 28 0 57 0 44 0 13 0 35 10000 00 0 62 0 23 0 38 0 35 10292 01 0 58 0 61 0 04 0 35 10592 54 0 48 0 44 0 04 0 35 109...

Страница 229: ...0 05 0 0 0 03 0 07 0 17 0 10 Uncertainty IEC 62585 0 35 0 35 0 35 0 35 0 35 0 35 0 35 0 35 0 35 0 35 0 35 0 35 dB Frequency Hz 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 12500 16000 2000...

Страница 230: ...230 SVAN 977C User Manual Appendixes The round charts show the directional characteristic and the charts below shows the errors for angles 250 Hz 315 Hz 400 Hz 500 Hz...

Страница 231: ...231 SVAN 977C User Manual Appendixes 630 Hz 800 Hz 1000 Hz 1250 Hz 1600 Hz 2000 Hz...

Страница 232: ...232 SVAN 977C User Manual Appendixes 2240 Hz 2500 Hz 2800 Hz 3150 Hz 3550 Hz 4000 Hz...

Страница 233: ...233 SVAN 977C User Manual Appendixes 4500 Hz 5000 Hz 5600 Hz 6300 Hz 7100 Hz 8000 Hz...

Страница 234: ...234 SVAN 977C User Manual Appendixes 8500 Hz 9000 Hz 9500 Hz 10000 Hz 10600 Hz 11200 Hz...

Страница 235: ...1 01 1 31 1 31 1 28 3150 0 03 0 20 0 28 0 26 0 60 0 87 0 61 1 02 1 19 1 24 3550 0 06 0 07 0 19 0 20 0 26 0 50 0 65 0 55 0 91 0 91 4000 0 04 0 17 0 22 0 27 0 34 0 32 0 79 0 82 0 78 1 20 4500 0 03 0 06...

Страница 236: ...7 24 6 70 7 19 6 10 11200 6 52 7 71 7 20 7 51 7 45 7 31 7 72 7 82 7 95 7 95 11800 7 25 7 73 7 54 7 83 7 95 6 85 8 51 8 13 8 26 7 01 12500 7 43 8 13 9 17 9 10 8 83 8 40 7 84 9 37 9 08 8 57 f Hz 200 21...

Страница 237: ...0 05 2240 0 52 0 42 0 37 0 19 0 09 0 03 2500 0 28 0 61 0 61 0 36 0 15 0 04 2800 0 66 0 85 0 76 0 27 0 10 0 03 3150 0 65 0 53 0 21 0 21 0 14 0 02 3550 0 29 0 12 0 13 0 10 0 04 0 05 4000 0 57 0 31 0 34...

Страница 238: ...2 0 07 0 20 354 81 0 05 0 03 0 08 0 20 365 17 0 05 0 03 0 08 0 20 375 84 0 05 0 03 0 08 0 20 386 81 0 05 0 03 0 08 0 20 398 11 0 05 0 03 0 08 0 20 409 73 0 05 0 03 0 08 0 20 421 70 0 04 0 04 0 08 0 20...

Страница 239: ...28 0 24 0 04 0 20 1223 21 0 29 0 25 0 04 0 20 1258 93 0 30 0 26 0 04 0 20 1295 69 0 31 0 27 0 04 0 20 1333 52 0 33 0 28 0 05 0 20 1372 46 0 34 0 29 0 05 0 20 1412 54 0 35 0 3 0 05 0 20 1453 78 0 36 0...

Страница 240: ...5 0 22 0 07 0 30 6878 60 0 15 0 19 0 04 0 30 7079 46 0 14 0 17 0 03 0 30 7286 18 0 17 0 15 0 02 0 30 7498 94 0 20 0 12 0 08 0 30 7717 92 0 15 0 1 0 05 0 30 7943 28 0 16 0 08 0 08 0 30 8175 23 0 17 0 0...

Страница 241: ...8 0 88 0 30 Note For the conformance of acoustical tests the Microphone and Free Field compensations must be switched on and the Windscreen compensation must be switched off path Menu Measurement Comp...

Страница 242: ...242 SVAN 977C User Manual Appendixes 250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz...

Страница 243: ...243 SVAN 977C User Manual Appendixes 1000 Hz 1250 Hz 1600 Hz 2000 Hz 2240 Hz 2500 Hz...

Страница 244: ...244 SVAN 977C User Manual Appendixes 2800 Hz 3150 Hz 3550 Hz 4000 Hz 4500 Hz 5000 Hz...

Страница 245: ...245 SVAN 977C User Manual Appendixes 5600 Hz 6300 Hz 7100 Hz 8000 Hz 8500 Hz 9000 Hz...

Страница 246: ...246 SVAN 977C User Manual Appendixes 9500 Hz 10000 Hz 10600 Hz 11200 Hz 11800 Hz 12500 Hz...

Страница 247: ...3 4 83 8500 0 01 0 51 0 89 1 49 1 93 2 20 3 04 3 77 4 08 4 26 9000 0 03 0 30 0 62 0 88 1 20 2 04 2 69 3 33 4 60 5 23 9500 0 16 0 45 0 61 1 36 1 78 2 65 2 70 3 52 4 48 5 38 10000 0 10 0 55 0 75 1 29 1...

Страница 248: ...7 0 45 0 41 0 50 0 32 2800 2 03 1 46 1 97 1 92 2 12 2 01 1 35 1 37 1 24 0 85 3150 1 75 1 11 1 81 1 81 1 85 1 77 1 20 1 12 1 05 0 58 3550 1 24 0 93 1 30 1 27 1 25 0 77 0 80 0 68 0 52 0 52 4000 1 63 1 0...

Страница 249: ...s 31 5 Hz 63 Hz 125 Hz 250 Hz 500 Hz 630 Hz 800 Hz and 1000 Hz increases the low level of the linear operation range to 70dB for the frequency weighting A 2 For mechanical vibrations with an accelerat...

Страница 250: ...250 SVAN 977C User Manual Appendixes...

Страница 251: ...ntities in the vibration meter mode RMS PEAK P P and MAX Definitions for mentioned parameters are given in Appendix D Mounting for vibration tests The accelerometer can be connected with the VLM using...

Страница 252: ...58 Hz Measured at the ref environmental conditions at 80 Hz sine signal Low from 10 mms 2 80 dB to 100 ms 2 160 dB High from 100 ms 2 100 dB to 354 ms 2 171 dB Linear measurement with the Vel1 filter...

Страница 253: ...ensitivity 79 58 Hz Measured at the ref environmental conditions at 1 Hz sine signal Low from 248 m to 2 48 m High from 2 48 mm to 8 81 m Linear measurement with the Dil3 filter from 24 8 m to 880 mm...

Страница 254: ...y according to the calibration chart Note Calibration procedure is given in Chapter 3 3 5 of the Manual Accelerometer input Connector TNC Impedance 40 k 100 pF typical Vibration transducers powering I...

Страница 255: ...er change in environmental conditions is 1 minute Note When the instruments are moved from a warm environment with high humidity to a colder environment care should be taken not to produce condensatio...

Страница 256: ...l spectrum Effect of humidity 0 5 dB for 30 RH 90 at 40 C and 1000 Hz Effect of radio frequency fields meets requirements of ISO 8041 1 2017 The greatest susceptibility the least immunity is achieved...

Страница 257: ...edance 10 G 2 pF Note For the electrical conformance tests with the ST02 impedance the Microphone compensation must be switched off path Menu Measurement Compensation Note When 1 1 or 1 3 octave analy...

Страница 258: ...n 2 where A is the upper limit for the sinusoidal signal in dB re1 V Example For the crest factor n 10 the upper limit is A10 120 dB re1 V Measurement frequency range 3 Hz 22 4 kHz with the Z filter...

Страница 259: ...ectrostatic and radio frequency criteria see Chapter C 1 1 Antialiasing filter Built in antialiasing filter Second order analogue filter passive Class combined with on chip FIR digital filter of the a...

Страница 260: ...VRMS Range High A weighting 7 VRMS B weighting 7 VRMS C weighting 7 VRMS Z weighting 17 6 VRMS C 3 2 1 1 and 1 3 octave filters 1 1 octave filters 16 filters with centre frequencies from 1 Hz to 31 5...

Страница 261: ...261 SVAN 977C User Manual Appendixes 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 262: ...262 SVAN 977C User Manual Appendixes 2 0 kHz 1 1 octave filter 1 0 kHz 1 1 octave filter 500 Hz 1 1 octave filter...

Страница 263: ...263 SVAN 977C User Manual Appendixes 250 Hz 1 1 octave filter 125 Hz 1 1 octave filter 63 0 Hz 1 1 octave filter...

Страница 264: ...264 SVAN 977C User Manual Appendixes 31 5 Hz 1 1 octave filter 16 0 Hz 1 1 octave filter 8 00 Hz 1 1 octave filter...

Страница 265: ...265 SVAN 977C User Manual Appendixes 4 00 Hz 1 1 octave filter 2 00 Hz 1 1 octave filter 1 00 Hz 1 1 octave filter...

Страница 266: ...y curve of the Ultra Band Summary curve of the Audio Full Band 1 3 octave filters 48 filters with centre frequencies from 0 8 Hz to 40 kHz base 10 meeting IEC 61260 1 2014 standard for Class 1 1 3 oct...

Страница 267: ...AN 977C User Manual Appendixes 1 3 octave filters for 16 0 kHz 1 1 octave filter Ultra band 1 3 octave filters for 16 0 kHz 1 1 octave filter Audio Full band 1 3 octave filters for 8 0 kHz 1 1 octave...

Страница 268: ...268 SVAN 977C User Manual Appendixes 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 269: ...269 SVAN 977C User Manual Appendixes 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 270: ...270 SVAN 977C User Manual Appendixes 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 271: ...271 SVAN 977C User Manual Appendixes 1 3 octave filters for 8 00 Hz 1 1 octave filter 1 3 octave filters for 4 00 Hz 1 1 octave filter 1 3 octave filters for 2 00 Hz 1 1 octave filter...

Страница 272: ...272 SVAN 977C User Manual Appendixes 1 3 octave filters for 1 00 Hz 1 1 octave filter Summary curve of the Ultra Band Summary curve of the Audio Full Band...

Страница 273: ...quency 1 3 octave filters 1 3 octave filters Hz RT60 ms RT60 ms 50 550 63 500 150 80 370 100 250 125 210 70 160 160 200 130 250 110 40 315 90 400 80 500 60 20 630 50 800 40 1000 30 10 1250 20 1600 20...

Страница 274: ...PLEMENTED BROADBAND DIGITAL FILTERS A filter Class 1 according to IEC 651 and IEC 61672 1 2013 A filter characteristics C filter Class 1 according to IEC 651 and IEC 61672 1 2013 C filter characterist...

Страница 275: ...nual Appendixes B filter Class 1 according to IEC 651 B filter characteristics U filter Class 1 according to IEC 61012 1990 U filter characteristics AU filter Class 1 according to IEC 61012 1990 AU fi...

Страница 276: ...s LF filter characteristic HP1 filter is used for the acceleration measurements the vibration signal in the frequency range from 1 Hz to 20 kHz HP1 filter characteristics HP3 filter is used for the ac...

Страница 277: ...uency range from 10 Hz to 20 kHz HP10 filter characteristics Vel1 filter is used for the velocity measurements the vibration signal in the frequency range from 1 Hz to 20 kHz Vel1 filter characteristi...

Страница 278: ...aracteristics VelMF filter is used for the evaluation of the state of the machines This filter is used for the measurements in the frequency range from 10 Hz to 1000 Hz and conforms with ISO 10816 Vel...

Страница 279: ...0 kHz Dil3 filter characteristics Dil10 filter is used for the displacement measurements in the frequency range 1 Hz to 20 kHz Dil10 filter characteristics Wh filter is used for the assessment of the...

Страница 280: ...280 SVAN 977C User Manual Appendixes HP filter is a High Pass filter HP filter characteristics HPE filter is a High Pass filter for the Ultra frequency band HPE filter characteristics...

Страница 281: ...nd 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 D...

Страница 282: ...operating time can decree depending on the batteries Instrument can be also powered from the external source e g SA 17A or car battery with the DC Voltage from 7 V to 16 V Voltage ripple should not e...

Страница 283: ...e SV 55 interface It conforms to the EIA Standard RS 232C It enables the user to program remotely all instrument functions and the transmissions to and from the meter with the speed from 1200 bit s to...

Страница 284: ...ncy Band 3 dB 0 02 Hz 40 kHz c Output Impedance 51 5 2 I O Mode Analog In future feature 3 I O Mode Digital In When the Ext Trigger function is activated the external triggering of the instrument may...

Страница 285: ...ment result is greater than threshold value d Source setting selects source of measurement result to be compared with the threshold value One of three results sources may be selected Leq 1 Peak 1 Max...

Страница 286: ...d on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and rec...

Страница 287: ...d Nominal 70 pF Supply current 2 mA 10 mA Supply voltage 22 V 28 V Bias voltage 12 VDC Output impedance Nominal 50 Charge discharge time constant start up time 1 sec typ Environmental Maximum vibratio...

Страница 288: ...ee also Appendix F SA 277C Assembly Guide to learn how to assemble and disassemble the microphone outdoor kit Note Using SA 277C changes the frequency response and measuring ranges of SVAN 977C Please...

Страница 289: ...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 25 80 27 103 27 117 32 120 25 80 27 103 27 117 2...

Страница 290: ...0 21 5463 87 1 95 298 54 0 02 1295 69 0 21 5623 41 2 13 307 26 0 02 1333 52 0 15 5787 62 2 01 316 23 0 03 1372 46 0 21 5956 62 2 31 325 46 0 01 1412 54 0 21 6130 56 2 35 334 97 0 03 1453 78 0 22 6309...

Страница 291: ...817 52 0 12 3548 13 1 14 15399 27 5 26 841 40 0 13 3651 74 1 16 15848 93 5 29 865 96 0 14 3758 37 1 23 16311 73 5 66 891 25 0 11 3868 12 1 31 16788 04 5 85 917 28 0 10 3981 07 1 32 17278 26 6 17 944 0...

Страница 292: ...sponse of SVAN 977C with SA 277C for 90 deg incidence angle Environmental Hz dB dB dB 251 19 0 06 0 04 0 02 258 52 0 06 0 04 0 02 266 07 0 08 0 05 0 03 273 84 0 08 0 05 0 03 281 84 0 07 0 05 0 02 290...

Страница 293: ...34 0 22 0 24 0 02 687 86 0 15 0 25 0 11 707 95 0 17 0 27 0 10 728 62 0 23 0 28 0 05 749 89 0 25 0 29 0 05 771 79 0 23 0 31 0 08 794 33 0 25 0 32 0 07 817 52 0 28 0 33 0 06 841 40 0 29 0 35 0 05 865 96...

Страница 294: ...89 0 49 0 58 0 09 2585 23 0 71 0 70 0 01 2660 73 0 86 0 83 0 03 2738 42 0 89 0 95 0 06 2818 38 1 28 1 08 0 20 2900 68 1 09 1 21 0 12 2985 38 1 47 1 33 0 14 3072 56 2 01 1 46 0 55 3162 28 1 87 1 58 0 2...

Страница 295: ...3 35 0 44 8912 51 3 78 3 49 0 29 9172 76 3 57 3 58 0 02 9440 61 3 86 3 62 0 25 9716 28 4 38 3 57 0 81 10000 00 3 56 3 46 0 10 10292 01 2 77 3 33 0 55 10592 54 2 69 3 23 0 53 10901 84 2 57 3 24 0 67 11...

Страница 296: ...258 52 0 04 0 04 0 00 0 25 266 07 0 08 0 05 0 04 0 25 273 84 0 10 0 05 0 05 0 25 281 84 0 08 0 05 0 03 0 25 290 07 0 02 0 05 0 03 0 25 298 54 0 02 0 06 0 08 0 25 307 26 0 04 0 06 0 10 0 25 316 23 0 04...

Страница 297: ...0 25 749 89 0 38 0 29 0 09 0 25 771 79 0 36 0 31 0 05 0 25 794 33 0 39 0 32 0 07 0 25 817 52 0 40 0 33 0 06 0 25 841 40 0 43 0 35 0 08 0 25 865 96 0 48 0 36 0 12 0 25 891 25 0 46 0 38 0 08 0 25 917 2...

Страница 298: ...54 0 25 2900 68 0 28 1 21 0 93 0 25 2985 38 0 61 1 33 0 72 0 25 3072 56 1 17 1 46 0 29 0 25 3162 28 0 97 1 58 0 61 0 25 3254 62 0 83 1 69 0 86 0 25 3349 65 1 04 1 80 0 77 0 25 3447 47 0 97 1 91 0 94...

Страница 299: ...28 0 80 3 57 2 78 0 35 10000 00 0 20 3 46 3 67 0 35 10292 01 1 08 3 33 4 41 0 35 10592 54 1 21 3 23 4 43 0 35 10901 84 1 42 3 24 4 66 0 35 11220 18 0 45 3 42 3 87 0 35 11547 82 0 37 3 80 3 43 0 35 118...

Страница 300: ...e Airport filter Table C 7 9 Self generated noise for different weighting filters Electrical Acoustical compensated Weighting filter Range A C Z A C Z Low 15 dB 14 dB 20 dB 17 dB 19 dB 24 dB High 25 d...

Страница 301: ...38 37 136 37 136 40 141 72 139 8 kHz 37 136 37 134 37 134 42 137 37 136 37 134 37 134 40 139 72 137 12 5 kHz 37 132 37 131 37 131 42 137 37 132 37 131 37 131 40 135 72 134 Free Field Frequency respons...

Страница 302: ...68 0 00 0 09 0 09 459 73 0 05 0 10 0 05 473 15 0 06 0 10 0 04 486 97 0 06 0 11 0 04 501 19 0 09 0 11 0 02 515 82 0 13 0 12 0 02 530 88 0 17 0 12 0 05 546 39 0 15 0 13 0 02 562 34 0 12 0 14 0 02 578 76...

Страница 303: ...0 55 0 01 1727 83 0 59 0 54 0 05 1778 28 0 59 0 53 0 06 1830 21 0 54 0 51 0 02 1883 65 0 61 0 50 0 12 1938 65 0 44 0 47 0 03 1995 26 0 34 0 44 0 10 2053 53 0 45 0 41 0 04 2113 49 0 27 0 37 0 10 2175...

Страница 304: ...3 6493 82 0 66 0 58 0 08 6683 44 0 59 0 57 0 02 6878 60 1 24 0 58 0 65 7079 46 1 11 0 61 0 50 7286 18 1 00 0 65 0 35 7498 94 1 11 0 68 0 42 7717 92 1 08 0 71 0 38 7943 28 1 28 0 72 0 57 8175 23 1 18 0...

Страница 305: ...01 18302 06 8 36 0 81 9 17 18836 49 8 81 2 83 11 63 19386 53 9 59 5 70 15 29 19952 62 9 82 9 41 19 23 Case effect of SA 277C 0 deg incidence angle Table C 7 13 SA 277C case effect 0 deg incidence angl...

Страница 306: ...0 06 0 10 0 04 0 25 473 15 0 06 0 10 0 04 0 25 486 97 0 06 0 11 0 05 0 25 501 19 0 09 0 11 0 02 0 25 515 82 0 16 0 12 0 04 0 25 530 88 0 22 0 12 0 09 0 25 546 39 0 15 0 13 0 02 0 25 562 34 0 10 0 14...

Страница 307: ...0 54 0 06 0 25 1778 28 0 53 0 53 0 00 0 25 1830 21 0 44 0 51 0 08 0 25 1883 65 0 59 0 50 0 09 0 25 1938 65 0 36 0 47 0 11 0 25 1995 26 0 29 0 44 0 15 0 25 2053 53 0 45 0 41 0 04 0 25 2113 49 0 31 0 3...

Страница 308: ...72 0 35 6683 44 0 04 0 57 0 61 0 35 6878 60 0 37 0 58 0 21 0 35 7079 46 0 45 0 61 0 16 0 35 7286 18 0 15 0 65 0 50 0 35 7498 94 0 37 0 68 0 32 0 35 7717 92 0 19 0 71 0 52 0 35 7943 28 0 64 0 72 0 08 0...

Страница 309: ...rrections compensated case effect dB Frequency Hz 20 25 31 5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 Correction factors 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 0 16 0 04 0 19 0 13...

Страница 310: ...310 SVAN 977C User Manual Appendixes Below the directional characteristics for 90 degree and tolerances for 90 degree and 0 degree incidental angles are presented...

Страница 311: ...311 SVAN 977C User Manual Appendixes 250 Hz 315 Hz 90 deg 0 deg 90 deg 0 deg 400 Hz 500 Hz 90 deg 0 deg 90 deg 0 deg...

Страница 312: ...312 SVAN 977C User Manual Appendixes 630 Hz 800 Hz 90 deg 0 deg 90 deg 0 deg 1000 Hz 1250 Hz 90 deg 0 deg 90 deg 0 deg...

Страница 313: ...313 SVAN 977C User Manual Appendixes 1600 Hz 2000 Hz 90 deg 0 deg 90 deg 0 deg 2240 Hz 2500 Hz 90 deg 0 deg 90 deg 0 deg...

Страница 314: ...314 SVAN 977C User Manual Appendixes 2800 Hz 3150 Hz 90 deg 0 deg 90 deg 0 deg 3550 Hz 4000 Hz 90 deg 0 deg 90 deg 0 deg...

Страница 315: ...315 SVAN 977C User Manual Appendixes 4500 Hz 5000 Hz 90 deg 0 deg 90 deg 0 deg 5600 Hz 6300 Hz 90 deg 0 deg 90 deg 0 deg...

Страница 316: ...316 SVAN 977C User Manual Appendixes 7100 Hz 8000 Hz 90 deg 0 deg 90 deg 0 deg 8500 Hz 9000 Hz 90 deg 0 deg 90 deg 0 deg...

Страница 317: ...317 SVAN 977C User Manual Appendixes 9500 Hz 10000 Hz 90 deg 0 deg 90 deg 0 deg 10600 Hz 11200 Hz 90 deg 0 deg 90 deg 0 deg...

Страница 318: ...1 0 03 1000 0 25 0 24 0 24 0 23 0 21 0 17 0 13 0 07 0 01 0 03 1250 0 16 0 16 0 14 0 12 0 13 0 16 0 16 0 12 0 05 0 07 1600 0 03 0 01 0 03 0 05 0 09 0 17 0 19 0 15 0 04 0 02 2000 0 52 0 50 0 44 0 35 0 2...

Страница 319: ...1 38 1 69 1 14 1 98 2 39 2 35 1 70 4500 0 94 1 26 1 47 1 68 1 67 1 67 1 62 2 13 2 08 1 29 5000 0 29 1 13 1 23 1 36 1 43 1 30 2 09 2 44 2 40 1 52 5600 0 28 0 93 1 66 2 24 2 45 2 45 2 83 3 56 3 56 2 28...

Страница 320: ...0 95 0 79 f Hz 300 310 310 320 320 330 330 340 340 350 350 360 250 0 03 0 02 0 01 0 02 0 04 0 06 315 0 10 0 08 0 06 0 04 0 02 0 01 400 0 07 0 05 0 03 0 02 0 01 0 02 500 0 04 0 03 0 01 0 02 0 03 0 04 6...

Страница 321: ...30 EU Standards EN 61326 1 2006 Measurement equipment EMC emission and immunity Directive Radio and Telecommunication Directive RTTE 1999 5 EC Standards art 3 1a SAFETY EN 61010 1 2010 Information te...

Страница 322: ...e constant in seconds for the given 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 Frequen...

Страница 323: ...ighted 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 measurem...

Страница 324: ...rm Ln 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 m...

Страница 325: ...quency 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 eac...

Страница 326: ...neous 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...

Страница 327: ...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 approac...

Страница 328: ...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 pe...

Страница 329: ...s and depend upon 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 Fi...

Страница 330: ...RT 60 REVERBERATION TIME EDT early decay time The 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...

Страница 331: ...ed with 30 dB dynamics The RT 30 decay 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 L...

Страница 332: ...al 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...

Страница 333: ...ws 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 dec...

Страница 334: ...he 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...

Страница 335: ...pper 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...

Страница 336: ...336 SVAN 977C User Manual Appendixes O ring gasket locations inside...

Страница 337: ...337 SVAN 977C User Manual Appendixes F 2 ASSEMBLY OF SA 277C 1 Secure preamplifier A with the dummy microphone 2 and connect the cable C 2 Pull tube 1 over the cable...

Страница 338: ...mp 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...

Страница 339: ...339 SVAN 977C 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...

Страница 340: ...40 SVAN 977C 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...

Страница 341: ...341 SVAN 977C User Manual Appendixes 9 Mount windscreen 8 and the anti bird spikes 7 10 Slide the desiccator 9 inside the tube...

Страница 342: ...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 i...

Страница 343: ...n damage the surface Color of the silica gel used in the desiccator part 9 when it is dry is amber If color of the silica gel turns light grey it means that the gel is soaked wetted and the desiccator...

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