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Type 2260 - E Manual

1. Multiple of Centre Frequency Fig 8 9 Curves showing the shapes of the octave band filters from 0 to 80 dB The innermost and outermost curves show IEC 61260 tolerances Response 0 5 7 pe 3 5 0 5 1 2 0 Multiple of Centre Frequency 980472e Fig 8 10 Curves showing the shapes of the octave band filters from 0 to 3 5 dB The innermost and outermost curves show IEC 61260 tolerances 178 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kjeer Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ7210 BZ 7219 and BZ 7206 Specifications Response 20 dB 20 40 60 80 0 1 1 10 Multiple of Centre Frequency DA Fig 8 11 Curves showing the shapes of the 1 3 octave band filters from 0 to 80 dB The innermost and outermost curves show IEC 61260 tolerances Response 0 5 dB 0 5 2 5 3 5 0 85 1 1 15 Multiple of Centre Frequency 980471e Fig 8 12 Curves showing the shapes of the 1 3 octave band filters from 0 to 3 5dB The inner most and outermost curves show IEC 61260 tolerances 100 1000 10000 100000 Frequency Hz 9500
2. 14 173 SLM parameters current measurements recalled measurements Slow time weighting Sockets Soft Key Soft key menu symbols Soft key Trigger Sound Analysis Software BZ 7201 Sound incidence correction frontal random Sound Level Calibrator Type 4231 geswithu se na AERA SS 93 Sound level meter analogue display bar display recalled data display set up main parameter secondary parameters Specifications uu aaa as sqqassasa 2 saa sassa 166 Spectrum levels current measurement Spread sheet Standards Reset Start key ANSI Resetting consequences of Start Pre Trig hard key Statistics Resolution Stop Post Trig broad band statistics Store discrete parameters measurement data 62 146 186 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Index measurement files a U set up data 152 Undetrranger aw kau EA Store BB 46 49 51 Store key Store Spec 46 50 51 V System key Vibration effects System mode Viewing broad band levels 139 T CIC results Temperature effects 174 aaa Qi buron Time weishtin evel distribution ghting Fast onto nt omit
3. 174 Main parameter display change 68 Manual control pausing starting resetting Manual control function Meas Sequence function Measure mode Measurement automatic control control parameters set up menu Measurement path x Measurement Results key Measurement sequence automatic manual Measurement time Measurements display and store display only Measuring range effect of changing hard key Memory card slot Menu overview fold outs soft key Microphone capacitance extension cable internal calibration mounting polarization registered sensitivity serial number Type 4189 unspecified Modes the four Multi D N No of measurements No of pauses Nominal calibration level 93 94 O Octave and 1 3 octave band filters centre frequencies 169 design ranges data recall Octave band filters data store deteetorg u NSP sss 170 general procedure Octave band levels manual control a recalled measurement 141 Measurement displays 172 ODO kay a kuu EA 194 Measurement files Operating range Content 23 5 vee diss E EAE et 147 hard key Measurement parameters placing descri
4. 32 Range of Settings for Input Parameters 33 3 5 Controlling Measurements a aaaaaasa 36 Introduction Qaya a SA a aa sma 36 Selecting Controlling Parameters 36 Settings for Measurement Control Parameters 36 Manual Control Function Manual 37 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 21 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Automatic Control Function Automatic BZ7210 and BZ7219 only 40 Automatic Control Function Meas Sequence BZ 7206 only a n an sn u ai A 41 Automatic Control Function Logging 43 Automatic Control Function Event Logging BZ7206 Only cots u l Sauna uwa uakis 46 Event Triggering BZ 7206 only 54 Setting Up the Measurement Path 62 Memory Requirements for Logging 63 3 6 Setting Up the Sound Level Meter Menu 64 Introduction u 2 Ta a SG n a a Oasis 64 Setting up the Quasi analogue Display Bar 65 Changing the Parameters on the Display 68 The Display for Recalled Data 71 3 7 Sett
5. 116 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results 5 11 Viewing Results aasan 119 Tit rod Wet On esis iss a pa a a ash ress cease 119 Scope for Viewing Current Measurements 119 Scope for Viewing Recalled Measurements 120 5 2 The Measurement Mode aasan 121 5 83 Quasi analogue Display Bar aa 121 5 4 Viewing Sound Level Meter Parameterg 122 Current Measurements 122 Recalled Measurements 123 5 5 Viewing a Cumulative Distribution 124 Current Measurements 124 Recalled Measurements 125 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 117 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results 5 6 5 7 5 8 5 9 5 10 5 11 Viewing a Level Distribution 126 Current Measurements 126 Recalled Measurements 128 Viewing a Profile oo cccccccccsesssssesessesessesesseseeeessstese
6. Installing Software Sound Analysis Software BZ7210 is pre installed on 2260 Investigator and BZ 7219 is pre installed on 2260 Observer When you switch it on for the first time the user interface language will be English To change the language or to install Enhanced Sound Anal ysis Software BZ 7206 on 2260 Investigator you need to switch off the 2260 and connect it to a PC using Serial Cable AO 1442 or AO 1886 then switch the PC on insert the CD ROM BZ 5298 in the PC s CD ROM drive and finally select Appli cations and Software for Type 2260 If the installation software doesn t start up automatically then run the file Set up exe on the CD ROM The installation software will guide you through the instal lation process Noise Measurement Parameters The software is for measuring a comprehensive set of param eters used in rating noise in terms of its impact on the do mestic and working environments The more commonly used of these which cover a large range of applications are see also sections 2 3 2 and 2 3 3 Sound Pressure Levels Equivalent Continuous Levels Peak Levels Percentile Levels Taktmaximal 3s and 5s Sound Exposure Levels Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 1 Introduction How the Analyzer Works In addition there is a choice of e A C and L frequency weightings e Fast Slow and
7. Setting Up the Analyzer Setting up the Output When Format is set to High Level a status voltage switches between 0 and 5 V depending on whether the analyzer is paused 0 V or an event is happening 5 V When Format is set to Sony TCD D8 the signal starts stops recording on Sony TCD D7 or TCD D8 tape record ers during an event When Format is set to Sony TCD D100 the signal starts stops recording on a Sony TCD D100 tape recorder dur ing an event Typically Event Status set on Aux 2 will be used as the DAT recorder remote control via a special remote control cable see Ordering Information Limited Event BZ7206 only Format High Level Sony TCD D8 or Sony TCD D100 may be selected When Format is set to High Level a status voltage switches between 0 and 5V depending on whether the analyzer is paused 0 V or an event is happening 5 V When Format set to Sony TCD D8 the signal starts stops recording on Sony TCD D7 or TCD D8 tape recorders during an event When Format set to Sony TCD D100 the signal starts stops recording on a Sony TCD D100 tape recorder dur ing an event The duration of the recording is limited by the Max Du ration parameter in the Set up Output menu Max Duration can have a value from 1s to 100 minutes in 1s steps This status voltage can be used to start stop external equipment such as a DAT recorder and would typically be used where you wish to conserve the recording
8. Is d u d Jyu u S 48 S 1 pue O19Z 0 Jayjnq eua gu ayy 879S eqop JUIW INSLIU JUIIINI 7481S 9 ggep qu ur msue ur suLfeyds Aefdstq suoryeorjdde p l ejsur au s Msoy Jyu ur xms sur qr JO SYST Suo 10 sn os V Sunrp 10 sp 9U pue srejoun pue users y puNnore 10499 98 PJO skoy MOLY moya y s numuoo pow snud ue u Jt ao qu ur mse ur JUaLIMI numuoo si si q urered dn ue oy sursueyo 107 nu u dn yag di sueda Sunse ug y Sur8uceuo 107 nu ur asuULY as 83 401S pa aU ut peo ATOUIOUL B 10 3stp EUI oY UO eqop SULIO S 10 NUJU 1o18 2 a ynduioo 10 p p 1o uuoo u1 0 BVP p 3 s at a Js 8Z 3o s paeO Xto pres Aadour ur e 10 YSIP eujs jur sa WO eqep Supeo 10 nu u eo 4 Il aleMyos uoryeortdde Sur essur p oy SULINSIFUOD 10 nu ur w s g we 4 Sumngaqtr eo9 10 nu ur uomsaqt eo a7 BAC s ur q1eq oY YoY o1 u Ds asey oA KiI91yeq Ade Jo pue uo sezATew MSA Ora ceL cUL IU AUEM OD QULLUOOILU S2924 QAO ALOK PASMI VUOLECOLI CU JIA SOSY Yee eulyD GZ7ZB G69 V1LS epeue2 9918 Z8LS LLO I Ze1g OOLS98 L E700 Peli1snv 990Z 0S76 Z0 eNes3sNYy ww dnu S0tL08StSt xej3 00S008StSt uoud l l Jewu q WNI N 0S8Z AA SYILYYNOAVIH J 9 ng syayoog pue Avtdsiq s
9. Spectrum Measure Fixes the time weighting Fast or Slow for measuring the BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 29 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Measurement Parameters octave band or l s octave band levels and their statistical quantities based on level and cumulative distributions Applies to the level and cumulative distributions of all octave band or l s octave band levels as described in sections 5 5 and 5 6 as well as the octave band or s octave band levels discussed in section 5 10 BZ7206 only Freq Weight There are ten available fixed groups of frequency weightings for the three types of measurements itemised under this pa rameter and listed below Broadband Meas Broadband Stat Spectrum Meas and statistics The available groups are shown in Table 3 2 30 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Input Microphone or AC Measurements Available Groups of Frequency Weightings Broadband Measurements A and C A and L Broadband Statistics Spectrum Measurements A C L A C L A L A L Table 9 2 The ten available groups of frequency weightings for the types of measurements listed in the column on the left Tables 2 1
10. Switch Cursor Fig 5 8 Cumulative distribution of a recalled meas urement showing the first page of its menu Display Menu 000g SA z LAF Inst En Fig 5 9 Level distribution for a recalled measure ment showing the zoomed graph BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 129 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Profile 5 7 5 7 1 Viewing a Profile Manual Automatic or Meas Sequence Functions This facility applies only to the current measurement It al lows you to monitor visually the variation of the measured parameter La Inst over the previous 15 seconds If there is less than 15 seconds of data the profile will go back only as far as the last pause or start of measuring whichever is the more recent Note A profile can only be stored using the BZ 7206 Log LAF facility described on pages 3 24 and 3 27 wij Meas Profile LAF Inst 3 Fig 5 10 Profile measurement menu showing the var iation of L ap Inst over the previous 15 sec onds With Fig 5 1 on display press the lt Profile gt soft key to display a 15 second profile an example is shown in Fig 5 10 When measurements are in progress is displayed the profile is updated every second To see the full display press the lt hard key 130 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Softw
11. 2 2 and 2 3 show which parameters are affected by these settings Thus all A weighted data will have been channelled through the A weighting network while all other parallel data will have been channelled either through a C or L linear weight ing network This allows the analyzer to measure Loeq Laeq which is a recognised parameter for determining the low frequency content in a measured signal 3 4 Setting Up the Input Microphone or AC 3 4 1 Introduction The analyzer can be set up to analyze a signal from one of the following e The analyzer s microphone preamplifier in which case you must also select the correct polarization voltage for the microphone and the valid sound incidence correction BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 31 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Input Microphone or AC e Via the analyzer s AC Input Output sockets shown as 25 and 26 on inside rear cover for example originating from a tape recorder If you choose the signal from the microphone preamplifier both AC Input Output sockets automatically become out puts for the buffered unweighted signal from the microphone preamplifier In which case these outputs can be used for making tape recordings of measured signals Note As outputs these two AC Input Output sockets are functionally identical use either one or the other However
12. If the deviation from an initial calibration lies outside 1 5dB you will be asked whether the microphone has been changed If your answer is Yes the calibration will cancelled and you will be asked to select the input for an unspecified microphone see section 3 4 3 If there is no reason to answer Yes the calibration will be cancelled in which case you should consult your local Briiel amp Kj r representative Procedure for External Calibration Microphone Input with unspecified serial number Important Make sure that the proper microphone input is selected serial number Unspec for analyzers with a regis tered Initial Calibration and the analyzer is set up to provide 98 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration the correct polarization voltage for the microphone in use See section 3 4 The procedure is similar to that described above for a regis tered microphone input but with no mention of an Initial Calibration in steps 2 and 8 Neither will there be any check for deviation from the Initial Calibration In step 6 there will be no check on the presence of a ZF 0023 Procedure for External Calibration AC Input Important Make sure that the analyzer is set up for an AC input See section 3 4 Note CIC is not available for External Calibration of AC Input The procedure is similar to that describe
13. Setting Up the Sound Level Meter Menu Introduction This section will explain how to set up the Sound Level Meter menu for visually monitoring selected measurement para meters while the analyzer is currently making a measure 64 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu 3 6 2 ment or paused Any changes to this set up will have no effect on the measurements The display comprises the following see Fig 3 26 e A quasi analogue display bar e A main parameter value shown in large numerals e Five secondary parameter values Apart from the file number and any measurement number the same display format is also used for data recalled from a disk see section 3 6 4 Mij Meas Meru sound Level Meter 40 LAFC Inst S Cumulative Distribution Lengel Distribution Profile Spectrum Elapsed Time Fig 3 26 The Measurement Display menu for visually monitoring selected measurement parame ters during a current measurement Setting up the Quasi analogue Display Bar Make sure that Fig 3 26 is on display If necessary press the hard key the ensuing lt Display Menu gt soft key and then the lt Sound Level Meter gt soft key to get Fig 3 27 and a new menu column for the soft keys BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 65 E
14. The Measurement Mode Press the hard key to get the Measurement mode and if necessary press the lt Display Menu gt soft key to get the relevant display examples are shown in Fig 5 1 for current measurements and Fig 5 2 for recalled measurements The menu column in each example gives access to the different ways of looking at the measurements See section 3 6 for setting up this display In the upper left hand corner of Fig 5 1 there is a symbol which is k measurement in progress e event in progress or If measurement paused A pause can arise either automatically at the end of a measurement or you can manually enforce one by pressing the hard key While there is an overload the word Overload will flash next to the k I symbol To remind you that an overload has occurred during the current measurement an arrow head p will appear and remain at the end of the quasi analogue bar To see this you may have to press the lt hard key Note You cannot always rely on measurements if an overload occurs This is especially critical for spectral data Quasi analogue Display Bar Except when using the Sound Level Meter display the quasi analogue display bar is always shown unzoomed and set up as described in section 3 6 2 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 121 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Sound Level Meter Para
15. When the calibration check is over Fig 4 15 will be displayed The Ratio fields show the difference between the output and input levels in dB Typically ratios lie between 35 dB and 40dB If the signal noise ratio of the CIC measurement is too low an asterisk appears beside the Ratio field The difference between the reference CIC obtained during the last external or internal calibration and the one you have just done is shown in the Deviation from Reference field 102 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration For an indication of how the magnitude of the deviation affects the verification of the CIC check see section 4 3 4 map Calibrate CIC Reference CIC Ratio 36 43 dB Calibration Date Last 1997 Jul 21 CIC Check Ratio 36 42 dB Deviation from Reference 0 01 dB Fig 4 15 CIC calibrate menu and results after CIC check The results of a manual CIC check are not stored The CIC check Ratio and Deviation from Reference fields are always blank when first displaying the screen Storage only occurs for automatic CIC checks see below Procedure for Automatic Charge Injection Calibration Check BZ7210 and BZ 7206 only Note Automatic CIC checks can only be done when the analyzer is in Logging or Event Logging function and then only if Microphone is chosen as the in
16. as inputs they must both be connected to the signal source aay Set up Input Input Microphone Serial Ho 1837038 Fol Voltage o W m L Corres Frontal Windscreen None Fig 3 4 The Set up Input menu showing that this analyzer has been initially calibrated with a particular microphone 3 4 2 Selecting Input Parameters 1 Start by pressing the set up hard key symbolised by and get the Set up Input menu Fig 3 4 on display 32 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Input Microphone or AC 2 Usethe lt p A VY hard keys to step through the various fields of the selectable parameters until the one you want to change is highlighted 3 Then withthe lt A gt and lt Y gt soft keys step through the available settings or values of that parameter until the one you need is displayed This will also cause the lt Save gt and lt Undo gt soft keys to appear The range of available settings for each measure ment control parameter is given in section 3 4 3 4 Press the lt Save gt soft key to confirm your choice this will also cause the lt Save gt and lt Undo gt soft keys to dis appear If you wish to undo any one of these press the lt Undo gt soft key and all settings values will revert to what they were the last time the lt Save gt soft key was pressed
17. rameter of your choice is highlighted Now press the lt Ed it Field gt soft key to get the display shown in Fig 3 31 Fig 3 31 shows part of the complete list of measurement parameters from which to make your choice The com plete list is shown in Table 3 4 Use the a and Y hard keys to highlight a particular measurement parameter scrolling is automatic at the top or bottom of the display to show the rest of the list While it is highlighted and depending on what it is change if required its units frequency and time weight ings via lt Unit gt lt Freq Weight gt and lt Time Weight gt soft keys which appear only when this is permissible The choice of units available only for Lx Peak and Lxpk MaxP is either decibels dB or pascals expressed as Pa mPa or Pa 70 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu Elapsed Time cPesks Lepe Max 3 Lepr Peak 3 Lar tSPL3 Lari Inst 2 KeA LAFT Ea LaAFTEeE Time we DRESASEL Weight Fig 3 31 Edit Secondary Field for selecting a sec ondary parameter together with its frequen cy and where applicable time weightings 3 Whenever Lyyy tO Lyyys OF Lagp q Te HH MM is high lighted the only soft keys to appear are lt A gt and lt Y gt Use these to increase or decrease the value
18. Calibrator and press oK to continue with the reference CIC BZ7210 and BZ 7206 When the calibration is over Fig 4 11 will be displayed Femove the cali brator from the microphone and press OK mhen ready Initial 1995 Sep 29 Fig 4 10 Calibrate External menu inviting you to pro ceed with the next step 8 Fig 4 11 shows the results of the new calibration in terms of any Deviation from initial and last calibration and a newly Calc Microphone Sensitivity At this stage you can either e Accept this by pressing the lt OK gt soft key in which case Fig 4 7 will be re displayed modified accordingly OR BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 97 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration aaj Calibrate External Calibration Level 93 9 JB re 20uPa Cale Microphone Sensitivity 26 2 dB re 1VefPa Ok Lasts 0 03 de Initial 0 51 de m Cancel Deviation from 4 Fig 4 11 Showing the results of a new external cali bration in terms of a new microphone sensi tivity and deviation from Last and Initial calibrations e Reject this by pressing the lt Cancel gt soft key in which case Fig 4 7 will be re displayed unmodified Note The earliest initial calibration of the analyzer with its microphone is done by Br el amp Kj r before leaving the factory applies to all type 2260 s from serial number 1875363 and above
19. Fast time weighting Fold out menu overviews eo FORGOT ONG diirei ipiri 93 Frequency weighting settings Frequency weightings Function Event logging aa ansa 46 Logging Manual Meas Sequence H Hard key symbols Help key House keeping data 19 I PEG st ndardgu l u SNS IEC standards measuring to Initial calibration Display aQ aya Digital Audio update rates 173 Input stage Display Hide Menu key extension cables Distribution frequency response cumulative impedances level Instantaneous values Documentation Interface serial calibration Internal calibration Drive microphone sensitivity 100 184 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Index K Key Arrows Back light 194 Battery 194 Calibrate 194 Display Hide Menu 194 hard 13 Help t Measurement Results 194 On Off us 194 Pause Continue 194 Range ei 194 Recall 194 Reset Start Set up soft Store System Transfer L LE D Screen 47 2 svete Ee ERE 5 Level distribution class interval current measurement recalled measurement Level recorder Level Trigger Logging function Logging rate ua a Na uu 45 49 50 M Magnetic field effects
20. How to Recall Measurement Data 150 6 4 Storing Set up Data csee eset 152 TAT PO DUCHON iss cscyccecccieseseseveteieectecteentesddetevetete neste veevende 152 How to Store the Current Set up Data 152 Adding a Name to a Set up Data File 154 6 5 Recalling Set up Data cseeseseeesteseseesees 156 Introduction ccccccccceessessseccececessessneeeeeceseeesseeeeeecesenes 156 How to Recall a Set up 156 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 145 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Introduction 6 1 6 2 6 2 1 Introduction This chapter will explain how to store and recall data for both measurement and set up files The procedures make use of the analyzer s m and hard keys for respectively the Store and Recall facilities Measurement data can be stored on either the internal disk or an external memory card Set up data are always stored on the internal disk but can be copied to an external memory card as described in the platform s user manual In both cases you can choose an existing path or create a new directory You can name set up data using a convenient 15 character name In both cases the analyzer must be paused and in the relevant measurement or se
21. LT hs SHH ARL ll WEAK ZL 27 REL SEEM 941592e 941591e 941587 le Fig 8 4 Directional characteristics of the analyzer fitted with Prepolarized Free field 1 Microphone Type 4189 at 1 2 4 8 and 12 5kHz 175 Sound Analysis Software BZ 7210 BZ 7219 and BB1046 14 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications Noise 300 Level dB 250 E Electrical Noise E Thermal noise O Combined noise oo M 50 10 0 150 20 0 eenmsoeneso S lt RSCaesenss sas S 23 5i 1 400 pi n Pa o a 7 aA 315 125k 16k k 25k 3 15k 4k 5k 63k 8k lt 3 a 66 a 28 000315 10k Center Frequency Lin 3Hz 20kHz Fig 8 5 The three components of inherent noise in each 1 2 octave band and in the broadbands A C and Lin 3 Hz 20kHz Noise 30 Level dB B Electrical Noise 25 E Thermal noise O Combined noise x a 8 o s a Center Frequency Lin 3Hz 20kHz 000316 Fig 8 6 The three components of inherent noise in each octave band and in the broadbands A C and Lin 3 Hz 20 kHz 176 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced S
22. Only when an event occurs do they become active in which case the Meas No field becomes inactive Displaying Event Measurements Measurements made with the event logging function are dis played in the same way as other measurements see Chapter 5 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 53 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements jeas sSLM Event Sample Ho Elapsed Time Event Sample Ao g Elapsed Time 00 00 05 Fig 3 14 2260 screen during recording Note the event symbol in the upper left corner 3 5 9 Event Triggering BZ 7206 only There are four different types of trigger that can be set for event start 54 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements External trigger Remote trigger Softkey trigger Level trigger Only one trigger type can be active at once Choosing which type is done in the Event Trig screen accessed from the Set up menu Fig 3 16 shows a typical event trigger screen Pre and Post trigger All trigger types have the possibility of setting pre and post trigger timings These two functions use the 2260 s ability to store the previous 15 seconds of measurement data By set ting a pre trigger of say 2 seconds you can record in your ev
23. e Nothing No data storage takes place Event Measurements The following three parameters define the broadband and spectral data to be measured for the event measurement Note The parameter settings are a duplicate of the back ground measurement settings Logged Every Fixes the duration in hours minutes and seconds of logging samples Any pauses made during the measurement via the 1 hard key end the current logging period and store the sample if specified A subsequent continue via the hard key resumes the logging with a new logging period The pause between the two samples is included in the measurement time The range of possible entries is from 00 00 01 to 99 35 9 2 59 For the following logging intervals logging is synchronised with the internal clock 50 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements 1 2 3 4 5 6 10 12 15 20 or 30 seconds minutes 1 2 3 4 6 8 12 or 24 hours The start of the first logging period coincides with the start of the measurement At the specified hour minute second the second logging period starts Subsequent periods will keep in convenient synchronisation with the internal clock See Fig 3 11 and Fig 3 12 for more details Store BB after each sample Can be set to one of the following All Each time the sample
24. lt Display Menu gt to return to Fig 5 1 Fig 5 2 for a re called measurement lt Back Erase gt for removing bad data see section 4 8 lt Cursor gt to step move the cursor either lt left or right The cursor reading appears in terms of P1 P2dB and Q meaning that for Q of the elapsed time the noise levels were within the class interval of P1 P2dB picked out by the cursor The cursor can also be moved using the lt or hard keys lt Zoom Graph gt to zoom in and out of the graph The un zoomed graph Fig 5 6 covers the range 0 100 and 126 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Level Distribution aij Mess Level Distrib Broad A F 7O Y1idE 1 Display Menu Back Erase Cursor mP Cursor Zoom Graph HA 40 LAFC Inst mn JE Fig 5 6 Level distribution of a current measurement showing the un zoomed graph IHi Mesas Level Distribution Broad R F T 7 13E 17 02 dik Fig 5 7 Level distribution of a current measurement showing the zoomed graph menu column minimised to see the full display BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 127 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Level Distribution the zoomed graph Fig 5 7 concentrates on the actual range of th
25. sequence see section 3 5 has run automatically since the z hard key was last pressed BZ 7206 only 2 The current sample number in a logging background measurement Event No BZ 7206 only Used in event logging where events are numbered con secutively starting at the beginning of the logging period Event Sample No BZ 7206 only Used in event logging where samples within each event are numbered consecutively Start Date Referred to the measurement start Start Time Referred to the measurement start Stop Date Referred to the measurement end Stop Time Referred to the measurement end BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 19 Enhanced Sound Analysis Software BZ 7206 User Manual 20 Sound Analysis Software BZ 7210 BZ 7219 and Enhanced Sound Analysis Software BZ 7206 User Manual Br el amp Kj r Chapter 3 Setting Up the Analyzer Sd Introduction sa un napana SS Quan s una tikasqa 23 3 2 Mounting the Microphone aaaaaaaaasa 23 3 83 Setting Up the Measurement Parameters 26 Irnitrod uchion u apa Q aS u E E a 26 Selecting Measurement Parameters 26 Range of Settings for Measurement Parameterg 27 3 4 Setting Up the Input Microphone or AC 31 Introduction 22 la uha cosas as E R asas 31 Selecting Input Parameters
26. unspecified microphone only and BZ 7206 or BZ 7210 only When the calibration is over Fig 4 13 will be displayed gap Calibrate Internal Microphone Sensitivity a CInput Stage incl j 26 0 dB re iV ePFa Lo Fig 4 13 Internal calibrate menu and results after an internal calibration 4 Fig 4 13 shows the results of the new calibration At this stage you can either e Accept this by pressing the lt OK gt soft key OR e Reject this by pressing the lt Cancel gt soft key In either case Fig 4 12 will be re displayed Procedure for Manual Charge Injection Calibration Check BZ 7210 and BZ 7206 only 1 Press the A hard key to view the calibrate menus All have a lt Calib Menu gt soft key If the display does not BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 101 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration resemble Fig 4 14 press the lt Calib Menu gt soft key and press the lt Charge Inject Cal gt soft key Fig 4 14 shows a typical Reference CIC ratio screen aap Calibrate CIC Reference CIC Ratio 36 43 dB Calibration Date Last 1997 Jul 21 Fig 4 14 CIC Calibrate menu for Charge Injection Calibration check The reference CIC ratio is the one obtained at the last external or inter nal calibration with a microphone selected as a source 2 Press the lt CIC Check gt soft key to start the Charge Injection Calibration check
27. 4189 Batteries Type 6xLR14 C size 1 5 V alkaline Lifetime at 20 C 5 9 hours continuous use de creases significantly at low temperatures dB 3 2 1 0 1 2 3 100 1000 10000 100000 Frequency Hz 941584 1e Fig 8 1 Effect of the analyzer s casing on frequency response Mask shows IEC Type 1 tolerances 2 1 0 1 2 3 100 1000 10000 100000 Frequency Hz 941585 le Fig 8 2 Free field frequency response of analyzer fitted with Prepolarized Free field 2 Microphone Type 4189 Mask shows IEC Type 1 tolerances 174 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications dB 6 4 2 0 2 4 6 1000 10000 100000 950051e 100 Frequency Hz Fig 8 3 Random incidence frequency response of analyzer random incidence filter selected fitted with Prepolarized Free field 1 2 Microphone Type 4189 Mask shows ANSI Type 1 tolerances ry ROT TT BLI j 7 Z J Ly 27 lt RX DTS
28. After each measurement run measurement continuation is immediate and automatic via Continue In this way the current result is always based on the latest multiple of the Preset Time This set up ensures that in the event of a power loss the worst that can happen is that only the data for the current uncompleted multiple of the Preset Time will be lost See Fig 3 8 lower diagram In all cases the analyzer will go into pause when the meas urement has run its course the number of times specified under No of Meas Note No data are lost if Store is combined with either Reset and Start or Continue 42 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Preset Time Preset Time 3 1 Preset Time CE 1 3 m f Time Next Action Reset and Start 1 hard key pressed Preset Time l Preset Time Pass Preset Time 2 s E time A A Next Action Pause 3 x Preset Time 2 x Preset Time Preset Time Time Next Action Continue 970469e Fig 3 8 Showing the difference between the three possible outcomes for Next Action in the set up for Measurement Control Parameters 3 5 7 Automatic Control Function Logging The Logging function is an automatic control of 2260 Inves tigator Observer designed to allow unattended measur
29. An automatic CIC starts at a logical break in a logging measurement Preset Time LAS SPL LAF SPL LAI SPL Selectable preset measurement time in the range Lvs sPL LvF SPL LvI SPL 1s to 99h 59m 59s with 1s resolution LAS Inst LAF Inst LAI Inst Lvs Inst LVF Inst Lvi inst Measurement Control Lasts LAFT3 Laits Measurement functions LvsT3 LvFT3 Lvir3 e Manual manually controlled single measure LAST5 LAFT5 LAIT5 ment LvsT5 LvFT5 LviT5 e Automatic with pre set measurement time LApk Peak Lvpk Peak from 1s to 100 hours in 1s steps BZ 7210 and BZ 7219 only BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 171 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications e Sequence repetition of a single measurement up to 9999 times results stored with or without statistical data Measurement time selectable from 1s to 100 hours in 1 s steps BZ 7206 only Logging a single measurement with a selecta ble duration of 1 s to 100 days in 1s steps Log ging duration divided into logging intervals of 1s to 100hours in 1s steps 15 different sets of parameters are available for storage Logging with Events as Logging but with the ability to measure a different set of parameters and timebase when an event trigger is recog nised BZ 7206 only Broadband Logged Parameters The following broadband parameters
30. Analysis Software BZ 7210 BZ 7219 and 39 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements 3 5 5 ter will stop If you press it again the measurement will continue and the elapsed time counter will start again e If you press the gt hard key while a measurement is running the conditions for doing this are the same as for changing a set up parameter see section 3 5 3 all data will be lost the measurement will start again and the elapsed time counter start again from zero Automatic Control Function Automatic BZ 7210 and BZ7219 only A measurement is initiated manually by pressing the y hard key Once initiated the duration of the measurement is controlled by the time specified under Pre set Time When the duration Elapsed Time equals Pre set Time the measurement will stop automatically Preset Time Fixes the duration in hours minutes and seconds of a meas urement from start to automatic stop Any pauses made dur ing measurement via the hard key are not counted in the pre set time The range of possible entries is from 00 00 01 to 99 59 59 Action after Meas Can be set to one of the following Store All Each time the measurement has run its course all meas urement data will be stored on a previously defined meas urement path see section 3 5 10 Store without Stat As with Store All but exclude all statistical dat
31. Fig 6 2 to get 148 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Storing Measurement Data Fig 6 3 and proceed as described in the platform s user manual to create the new directory After this Fig 6 1 will be redisplayed with the new path as current TH Meas Nen Path Internal Disk DATA TREAFFIC Change GENTOFTE fg Drive LYNGE Y k SDEDPG h Create TAASTRUP PF Dir Fig 6 2 New Path menu for selecting a new path and switching between internal disk and ex ternal memory card before storing a meas urement file 7 When you are satisfied with the path and file name in Fig 6 1 press the lt OK gt soft key to confirm the storage and return to the measurement mode See section 6 3 if you want to recall a given measurement data file Refer to the platform s user manual if you want to copy measurement files to and from an external memory card or to delete them BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 149 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Recalling Measurement Data ij Meas Create Dir MY_FATH_ OK Insert Char Back Space Fig 6 3 Create Directory menu for creating a new di rectory before storing a measurement file 63 Recalling Measurement Data 6 3 1 Introduction Before you can recall
32. Fig 4 17 Timers Set up menu 108 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Timers and Automatic Measurements 2 Usethe A Y lt p hard keys to step through the various fields of the selectable parameters until the one you want to change is highlighted Then with the lt A gt and lt Y gt soft keys step through the available settings of that parameter until the one you need is displayed This will also cause the lt Save gt and lt Undo gt soft keys to appear The range of available values for each measure ment parameter is given in section 4 7 3 3 Press the lt Save gt soft key to confirm your choice this will also cause the lt Save gt and lt Undo gt soft keys to dis appear 4 Repeat steps 2 and 3 until you are satisfied with the setting or value of each parameter If you wish to undo any one of these press the lt Undo gt soft key instead of the lt Save gt soft key and all settings values will revert to what they were the last time the lt Save gt soft key was pressed 4 73 Range of Available Settings for Timers Fig 4 17 lists the items and their settings for a particular timer set up Each is described in the following Timer No Any integer value from 1 to 9 This means you can set up a maximum of nine timers See section 4 7 5 on using more than one timer simultaneously Set up No Any i
33. Impulse time weightings The sound analysis software provides five ways of viewing your data Discrete sound level meter parameters e Cumulative distribution e Level distribution e Octave band spectrum or 3 octave band spectrum e 15 or 60 second sound level profile 13 How the Analyzer Works A Dedicated Sound Measurement Platform Modular Precision Sound Analyzer Type 2260 is a program mable platform for a dual channel real time hand held ana lyzer With the software installed it becomes a dedicated sound measurement platform It takes the microphone signal through frequency weighting networks and anti aliasing fil ters to an A D converter Then it processes the digital signal and sends outputs to various external digital devices One of these outputs is to the 192 x 128 mm LCD screen which is part of its user interface to keep you constantly informed and in control Data Storage and Transfer to PC Data can be stored in memory as well as transferred onto external credit card sized PCMCIA memory cards for storage or transfer to a computer Transfer of data to computer can of course also be done directly via the serial interface BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 5 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 1 Introduction Experiment Post Measurement Software for a Computer Once measured data are transferred to a computer one of Briiel amp Kjzer s Windows
34. Keys Denoted by the relevant symbol for example A Soft Keys Denoted by chevrons lt gt and courier type face for example lt Undo gt Path Denotations Denoted by capitals and courier type face for example SET UP BZ7201 Parameter Text Appearing on the Display Denoted by courier type face for example Format Sockets Denoted by bold type face for example Serial Interface 8 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software 21 What the Software Does 10 2 2 Operating with the Software a 13 Hard Keys and Soft Keys 13 The Four Operational Modes 14 Handling Data sua saan lu ulula iisas 14 Statisties Gere aE a hace eee Sota sz 14 2 3 What is Measured and Recorde d 15 Introductions l a aa tuna ai ansa aq series bea de aoaat cates 15 Discrete Parameters During a Measurement 15 Discrete Parameters with Spectrum band data 18 Housekeeping Data 19 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 9 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software What the Software Does 2 1
35. Software BZ 7206 User Manual Chapter 4 Measuring Calibration Input signal Output signal N Hz 960269e Fig 4 4 No microphone attached or diaphragm torn or missing The out put level is significantly increased due to reduced microphone capacitance eye 0 dB Input signal 40 dB Output signal 960270e Fig 4 5 Microphone short circuited The output level is significantly re duced relative to the normal condition Connecting a recommended microphone extension cable see section 3 2 has no effect on the analyzer s calibration There fore you do not have to re calibrate after connecting one of the recommended microphone extension cables BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 91 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration eye 0 dB 40 dB Fig 4 6 Input signal Hz 9602716 Disconnected or broken cable The output level will change sig nificantly depending on the distance between the conditioning amplifier and the break in the cable A cable broken near to power supply B cable broken near to the microphone Principle of Operation When in the calibrate mode the analyzer displays the cali bration level and microphone sensitivity used for the previous calibration Adjust if necessary and accordingly either value then press the lt Calibrate gt soft key The analyzer will then proc
36. Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 9 Index Numerics B 4226 calibrating with Back erase 4228 calibrating with Back light key 4231 calibrating with Bad data deleting u heise U us 113 Batteries A Battery ke AC Input Output 1 and asa i AC Input Output 2 Broad band levels 139 Accessories Briiel amp Kj r calibrators effects PEENE EREA EE ETES 173 Type 4226 Action Type 4228 after each measurement Type 4231 next Analogue display bar set up C zoom range Calibrate key u uqllan as 194 Analyzer Calibrate mode 14 173 ANSI standards 166 Calibration measuring to 107 adjustment range Application software w2 automatic CIC Arrows key check ASCII diffuse field Attenuator documentation Automatic control external next action free field set up internal Aux 1 level Aux 2 ar 16 manual CIC Auxiliary Output 1 194 nominal level Auxiliary Output 2 194 practice Auxiliary outputs Type 4231 setting up when BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 183 Enhanced Sound Analysis Software BZ 7206 User Manual Index Calibration set up Hpo 422881 u ul ir TEREE EE 94 Calibrators external Cha
37. What the Software Does The software converts Briiel amp Kjzr s Modular Precision Sound Analyzer Type 2260 into an advanced type 1 sound level meter and analyzer With this software the analyzer is able to measure analyse and record a multiplicity of param eters and information concurrently in a single operation a technique called Multi D Quite simply this means you use much less of your time actually making measurements there by saving you money Tables 2 1 2 2 2 3 and 2 4 show what the analyzer measures and records concurrently Table 2 2 shows that in many cases some broadband parameters are measured with six different combinations of frequency and time weightings In addition there are facilities for Automatically controlling measurements Pausing and continuing a measurement Storing and recalling data and set ups Visually monitoring real time data Examining recalled data Removing bad data from the measurements Control of and by external equipment Automatic control under one or more timer set ups Broadband statistical Parameters Parameter Frequency Weighting Time Weighting Level and cumulative level distributions as well as five preselected Ly values These are calcu lated from 401 accumu lators each 0 2 dB wide Preselected during set up for Broadband Stat See Fig 3 3 Can be Aor C or L Preselected during set up for Broadband Stat See section 3 3 3 Can be
38. any measurement data the analyzer must be in the measurement mode which is indicated by Meas in the top left hand corner of the display and paused When you recall measurement data you recall everything that was previously stored see section 6 2 6 3 2 How to Recall Measurement Data 1 Press the hard key if necessary to make sure the analyzer is in the measurement mode to tell the analyzer that a recall concerns measurement data 2 Make sure the analyzer is paused if necessary enforce a pause via the hard key 150 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Recalling Measurement Data 3 Press the hard key to get the display shown in Fig 6 4 which is the menu for recalling measurement data Use the lt Change Drive gt soft key to switch between internal disk or external memory card if you require this Use the A Y lt p hard keys to select a file or another path see platform s user manual TH Meas Recall Internal Disk SDATASMEARS 1 i MEER Sep 18 rive diza S3C sep 16 File 0030 S3C Sep oo 003l 53C Sep 23 0032 53C Sep oS 0033 51C Sep 23 OO34 51C Sep 23 00325 51 Sep oS k j Fig 6 4 Recall menu for selecting a new path and switching between internal disk and exter nal memory card before recalling a measure ment file 4
39. becomes too small to give statisti cally reliable measurements To overcome this the Fast time constant 125 ms is replaced by pro gressively longer time constants with decreasing centre frequencies and corresponding band widths The table below shows the time constants for the full range of 1 1 octave bands For a white Gaussian signal and for centre fre quencies from 8 Hz to 63 Hz these time constants give a relative standard deviation of approximately 1 5dB Centre Freq Timeconstant Averaging Hz ms time ms 63 and above 125 Fast 250 31 5 250 500 16 500 1000 8 1000 2000 1 3 octave Time Constant At low centre frequen cies that is below 100Hz the B x T product for 1 3 octave bands becomes too small to give sta tistically reliable measurements To overcome this the Fast time constant 125ms is replaced by progressively longer time constants with decreas ing centre frequencies and corresponding band widths The table below shows the time constants for the full range of 1 3 octave bands Centre Freq Timeconstant Averaging Hz ms time ms 100 and above 125 Fast 250 80 63 50 250 500 40 31 5 25 500 1000 20 16 12 5 1000 2000 10 8 6 3 2000 4000 For a white Gaussian signal and for centre fre quencies from 6 3Hz to 160 Hz these time con stants give a relative standard deviation of approximately 2dB Overload Detector Monito
40. during events BZ 7206 only Limited Event status As Event Status but with a maximum specified duration 1s to 100 mins BZ 7206 only AC Inputs Outputs Signal Output Buffered unweighted microphone Signal Input Normal For input from an external source such as a tape recorder Hand Arm Vib For use with the 3 channel Hu man Vibration Front end WB 3461 special read ings of apw in m s in the Spectrum display Whole Body Vib For use with the 3 channel Human Vibration Front end WB 3461 special readings of awx awy awz and ay in m s in the Spectrum display Digital Audio Input Output Not used with this software Settling Time From Power On Approx 35s Effect of Vibration Less than 72dB for a 50 Hz vibration at a level of 1m s2 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 173 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications Effect of Accessories Weight See Fig 8 13 8 14 8 15 and 8 16 for the effect 1 2kg including batteries Input Stage ZC 0026 of accessories on the analyzer and Prepolarized Free field 2 Microphone Type 4189 Effect of Magnetic Fields i 80 A m 1 rsted at 50 Hz causing a reading of Dimensions A weighting lt 20 dB 375x120x52mm including Input Stage ZC 0026 C weighting lt 30 dB and Prepolarized Free field 1 2 Microphone Type 63Hz Octave band filter lt 30 dB
41. event occurs such that a CIC period is totally missed the CIC results table indicates this 104 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Resetting 4 4 5 4 4 4 4 5 Documentation of a Calibration The result and time of a calibration is stored with measure ment data When you recall data page 4 of the recalled set up see section 5 9 documents the calibration If an initial calibration has been registered this too together with the microphone s serial number will be documented with the da ta A printout of the recalled set up will provide hard copy doc umentation of these and Initial Calibration details Automatic CIC checks are documented in the measurement file to which they belong These can be read using the Au tomatic CIC screen on the Measure menu see section 5 11 Checking the Analyzer s Calibration To run a calibration check follow the instructions given in section 4 4 2 up to the point where Fig 4 10 appears Check whether there has been any Deviation from last calibra tion then press the lt Cancel gt soft key Resetting Before you press the z hard key during a measurement you must decide what to do with the data so far collected There are two possible outcomes if the elapsed time of meas urement has exceeded one minute e You will be warned that all data up to now will be lost
42. has run its course all broadband measurement data will be stored on a previously defined measurement path see section 3 5 10 w o Stat As with A11 but excludes all broadband statistical data Major Par Leg Lo Lpk MaxP gt LAFMAx LAFMin LcyLeq Lam Frequency weighting C L depends on set up see section 3 3 3 Nothing No data storage takes place Store Spec after each measurement Can be set to one of the following e All Each time the measurement has run its course all spec trum measurement data will be stored on a previously defined measurement path see section 3 5 10 w o Stat As with A11 but excludes only statistical data on octave bands or 1 3 octave bands Leg Stores only Leg spectra Frequency weighting depends on set up see section 3 3 3 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 51 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements e Nothing No data storage takes place File Structure Background and event measurements are stored sequentially in the same file as part of the overall log Examples are shown in Fig 3 11 and Fig 3 12 dB Time HHWH O ee Logged Every 1 2 EERE Be SHEA a HHHH HHHH Logged Every 970421e Fig 3 11 An example data structure of a log file with background and event data both having the same logging rate You can see from the ex
43. is initiated either manually by pressing the gt hard key or automatically via a preset timer see section 4 7 Once initiated the sequence of measurements is controlled via the settings of the remaining items displayed in Fig 3 10 Press the hard key either to pause the analyzer or to regain manual control when started by a preset timer see section 4 7 Press the gt hard key to reset and start the logging again Meas Time Fixes the duration in days hours minutes and seconds of a measurement from start to automatic stop Any pauses made during the measurement via the hard key are counted in the measurement time The range of possible en tries is from 00 00 00 01 to 99 23 59 59 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 47 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements i set up Meas Ctrl Furic Event Logging Mess Time 00 01 00 0000 Log LAF Events Background Logged Every 00 00 10 Store BE Major Par Store Speci mo Stat Logged Every 00100101 Store BB Heo Stat Store Speci Hothing Fig 3 10 The Event Logging screen BZ 7206 only Log Lar Laf Inst is logged every 100ms during background meas urements if Log Lap is set to Background and Logged Every for Background is set to 00 00 01 LapUnst is logged every 100 ms during event measurements if Log Lap is set to E
44. may be stored for each logging interval All Without Sta tistics Major Parameters Nothing Major Parameters are the following Laeq Lcpk MaxP AFMax LAFMin Lceg Laim Spectrum Logged Parameters The following Spectrum parameters may be stored for each logging interval All Without Statistics BZ 7206 only Leg Nothing Elapsed Time When not in Logging function elapsed time resets starts and pauses continues according to the re spective command In Logging function elapsed time continues in real time regardless of pauses in a measurement Triggers BZ 7206 only Four types of event trigger are available Level monitors LAF Inst every 1s Event trig gered when LAF Inst exceeds the set level for set period both user defined for 1 dB 1 s incre ments Softkey using lt Start Event gt and lt Stop Event gt softkeys External 5V on pin 9 of serial interface Remote start and stop commands sent over the serial interface All triggers can have pre and post trigger time intervals of up to 15s in 1s increments allocated to them Timers Up to nine independent timers can be specified Each timer wakes up the analyzer at a specified Lipk MaxP OF LLeq if L is selected in Broadband Fre quency Weighting set up date and time and performs a measurement pro cedure in accordance with user defined set ups A timed measurement can be repeated 1 to 999 times Timers from d
45. media For example you may not need to record all of an event to determine its character Therefore you can set the Limited Event value to say 30s Then the pulse and hence the record time will be limited to 30s even if the event lasts 7 minutes BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 79 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting up the Output Digital e Permanently set to off Not used in this application 3 7 4 Setting up the Level Recorder The basic points to remember are e The level recorder must be set up to record DC voltages linearly Therefore switch it to a DC Lin mode or equiv alent e Use a suitable balanced cable for example AO 0440 be tween the level recorder input and the analyzer s Aux Output e For convenience select a Range see section 3 7 3 which matches the range represented by the graduated width of the chart paper used on the level recorder for example 50 dB Calibrating While the analyzer switches between 0 and 4V see section 3 7 3 adjust the DC Lin Position or DC offset and Sen sitivity of the level recorder as follows and in the following order e for OV and via the DC Lin Position ensure that the pen travels to the bottom of the chart e for 4V and via the Sensitivity ensure that the pen travels to the top of the chart After this the top of the chart will correspond with the Max Le
46. of course Practical Hints The sound level meter is designed as a self contained unit to meet the requirements given in IEC 60651 IEC60804 and similar national standards However some of the require ments given in the standards are based on measurements of pure tones under free field conditions Practical measure BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 83 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Making a Measurement 4 2 2 ments under similar conditions require the following extra precautions e Use a tripod whenever possible e Do not stand close to the sound level meter e Use if necessary a recommended microphone extension cable see section 3 2 this increases the distance between the microphone and any objects which can cause distur bances The influence of your presence on the measurement can easily be checked by changing the distance between you and the microphone and observing the change in the measured sound pressure level If your position influences the measurement result then use a microphone extension cable or spatially average your measurements Note that when dealing with pure tones a small change in the position of the microphone can influence the result just as much as your physical pres ence Fortunately the combination of free sound field and pure tones is very rare With sound coming from several directions and if you are measuring ove
47. or when Type is set to Spreadsheet 7 3 2 Contents of Measured Data The contents of the printed measurement data the top four items listed in Table 7 1 are described in Table 7 2 7 3 3 Screen Dump When Format in the Print Output Set up Menu is set to Screen Dump the output is a bit map of the current display 162 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 7 Printing and Exporting Data Output to a PC Output Content of Printed Output Overall Results All broadband and overall discrete parameters except instantaneous values Level Distribution Level distribution either as graph table or both Class width as selected on the screen Statement of whether broadband octave band or 1 3 octave band Cumulative Distribution Cumulative distribution either as graph table or both The class width is as selected on the screen for level distribution Statement of whether broadband octave band or 1 3 octave band Spectrum Spectrum as graph table or both Automatic CIC List of Automatic CIC measurements as a table BZ 7210 and BZ 7206 only Table 7 2 Content of the various outputs to a printer Graph output is possible with the B amp K 2318 printer only For other printers use the Screen Dump option to print graphical data 7 4 Output to a PC 7 4 1 Introduction See also section 7 2 which describes the gen
48. parameter scrolling is automatic at the top or bottom of the display to show the rest of the list Now select or deselect it using the lt Select Deselect gt soft key While it is highlighted and depending on what it is change if required its units frequency and time weight ings via the lt Unit gt lt Freq Weight gt and lt Time BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 69 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu Weight gt soft keys which appear only when this is per missible The choice of units available only for Lypk Peak and Lypk MaxP is either decibels dB or pascals expressed as Pa mPa or uPa Note Time and frequency weighting can still be selected from the Sound Level Meter display see section 5 4 Whenever Lyyyi tO Lyyys OF Lagp d Te HH MM is highlighted the only soft keys to appear are lt A gt and lt w gt Use these to increase or decrease the value of either N or Te respectively When you have made the settings you require press the lt OK gt soft key to confirm these and to revert to the pre vious display Editing the List of Secondary Measurement Parameters Up to five secondary measurement parameters can be select ed for display as follows Procedure 1 Start with Fig 3 28 on display and ensure via the A and Y hard keys that the field for the secondary pa
49. press the lt OK gt soft key to confirm these and revert to the previous display 3 6 3 Changing the Parameters on the Display Editing the List of Main Measurement Parameters The value of the main measurement parameter is always shown in large numerals With Fig 3 27 on display the main measurement parameter can be step changed via the lt Main Param gt soft key Alternative choices are taken from a short list prepared as follows 68 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu Procedure 1 With Fig 3 28 on display ensure via the A and Y hard keys that the main parameter field is highlighted Now press the lt Edit Field gt soft key to get the display shown in Fig 3 30 ma Mes s Edit Field Main Parameter a Laet ASEL 3 EL LAIH Lceg LaAeg Latn LaAeg LAFTH LAFTHS Larhax SEL CFi o F Fig 3 30 Edit Main Parameter Field menu for se lecting deselecting a short list of main pa rameters The selected ones are tagged Fig 3 30 shows part of the complete list of measurement parameters from which you can make a short list of those needed for display during a measurement The complete list is shown in Table 3 4 Selected measurement para meters are tagged thus Use the A and Y hard keys to highlight a particular measurement
50. serial interface The external device can be either a printer or a PC Chapter 7 has all the details Statistics There are three types of statistical data which you can ex amine during or after a measurement These are cumulative distribution level distribution and user defined percentile levels 14 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software What is Measured and Recorded Cumulative Distribution This is displayed as a curve from which using the cursor soft keys you can read off any percentile level See Chapter 5 for full details Level Distribution This is displayed as a curve from which using the cursor soft keys you can read off what percentage of the time the meas ured parameter level spent within any class interval The class interval is user definable See Chapter 5 for full details User defined Percentile Levels Five user defined percentile levels included with the compre hensive range of discrete measurement parameters see sec tion 2 3 2 2 3 What is Measured and Recorded 2 3 1 Introduction In this section instantaneous values for parameters marked are replaced by a new one every second 44 are replaced by a new one every three seconds 4 4 are replaced by a new one every five seconds All others are currently valid for the time elapsed since the measurement start 2 3 2 Disc
51. the one that comes up is the one used last time together with settings and values All will have a lt Calib Menu gt soft key in the menu column If the display does not resemble Fig 4 12 press the lt Calib Menu gt soft key and on the subsequent dis play press the lt Internal gt soft key to get Fig 4 12 gapCalibrate Internal Microphone Sensitivity c Input Stage incl j BET JE re lucFa Fig 4 12 Internal Calibrate menu for internally cali brating the analyzer Fig 4 12 shows the last used sensitivity value or if the last calibration was external the calibration result If the last calibration was with a registered microphone all you can do at this stage is to go directly to step 3 Otherwise go to step 2 Use the lt A gt and lt Y gt soft keys to enter the value of the Microphone Sensitivity which takes into account the effect of the Input Stage ZC 0026 For a Type 4189 microphone subtract 0 5dB from the microphone s open circuit sensitivity The example shown in Fig 4 12 is typical of Microphone Type 4189 100 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration 3 Press the lt Calibrate gt soft key to start the calibration which also adjusts the A D and D A convertors You can still cancel by pressing the lt Cancel gt soft key and return to Fig 4 12 A reference CIC is also done
52. to display Fig 4 20 which is the Back Erase display showing the profile over the last 15 seconds before pause and the lt Cursor gt soft keys Press if necessary the lt hard key to reveal the full display 4 Use the lt Cursor gt soft keys to position the cursor so that the shaded area of the display right of the cursor covers the part of the profile to be deleted 5 If satisfied press the lt OK gt soft key to remove all data measured within the time represented by the shaded BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 113 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Deleting Bad Data from a Measurement aij Meas SLM Display Menu Fig 4 19 SLM measurement menu Press the lt Back Erase gt soft key to get Fig 4 20 ij Mesas Back Erase Back Erase Ts LAF Inst 3 Fig 4 20 Back Erase menu during a pause in a cur rent measurement area otherwise press the lt Cancel gt soft key to do nothing about the shaded data Either way the previous display 114 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Deleting Bad Data from a Measurement will return and you can continue with the measurement by pressing the hard key BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 115 Enhanced Sound Analysis Software BZ 7206 User Manual
53. verification although this can involve practical and econom ical disadvantages for example difficulty of access the time involved and disassembly Used in the right way the CIC technique has the advantage that it can be used to increase 88 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration Practice and Theory Microphone Preamplifier Cable Generator 970294e Fig 4 2 Charge Injection Check High leakage resistance capacitor C is set in parallel with the microphone and fed with voltage e The ratio e e is constant when g Cg Cm and Ci are constant Changes to preamplifier gain g cable parameters microphone capacitance Cm etc will change e e and hence indicate probable changes in calibration the interval between costly acoustic calibrations or when do ing lengthy unattended measurements in the field However an acoustic calibration can never be completely replaced by an electrical test facility Fault Diagnosis with CIC Whenever an external acoustic calibration is made a refer ence Charge Injection Calibration ratio is measured and stored When a Charge Injection Calibration check is done a new ratio is measured and compared to the reference ratio The deviation is an indication of the stability of the meas urement chain in the analyzer If the deviation is greater than the expected e
54. 0 25 the data are automatically merged with the sound recordings The sound recordings are then marked in the profile display of the 7815 20 25 and can be replayed You use the cursor position in the profile display to decide which part of the recording you want to hear Recorder Set up The marker set up Fig 5 13 allows you to set up when re cordings are made and for which markers PC sound recording can be Marker Controlled or Measure ment Controlled For Marker Controlled measurements a recording is started at the same time as the marker if Recording is set to On for that marker For Event Logging measurements a recording is started at the same time as the event if Recording is set to On for events BZ 7206 only If you have selected Measurement Controlled a recording is started every time you start a measurement 134 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Control of Sound Recording on a PC i et u gt Markers PC Sound Recording Marker Controlled Unlimited duration Marker Hame Fecording 1 EXCLUDE ort z CAR or 3 TRUCK Or 4 HERE ER ort g HARKER 5 ort Events orn Pre Marker 05 Fig 5 13 An example of the Measurement Set up screen Recording can be of unlimited duration as long as the meas urement runs and the sound marker is active or of a fixed number of seconds from 1 t
55. 16 1e Fig 8 13 Effect of accessories on the analyzer here the Tripod UA 0587 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 179 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications dB 1 0 1 100 200 500 1K 2K 5K 10K 20K Frequency Hz 512 Fig 8 14 Effect of accessories on the analyzer here the Protective Cover UA 1236 for the micro phone together with the windscreen correction set to Protective Cover Mask shows IEC Type 1 tolerances dB 100 200 500 1K 2K 5K 10K 20K Frequency Hz 000311 Fig 8 15 Effect of accessories on the analyzer here the 65mm Windscreen UA 0459 together with the windscreen correction set to 65mm Mask shows IEC Type 1 tolerances 180 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications N 100 200 500 1K 2K 5K 10K 20K 000312 Fig 8 16 Effect of accessories on the analyzer here the 90mm Windscreen UA 0237 together with the windscreen correction set to 90mm Mask shows IEC Type 1 tolerances dB 2 1 Extended wit s K AHH e ig 5 50 100 Baien T 000313 Fig 8 17 Low frequency response of analyzer
56. 3 4 The Input Stage ZC 0026 is required for use with the platform 1 Gently screw the microphone onto the Input Stage ZC 0026 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 23 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Mounting the Microphone 941731e Fig 3 1 Mounting the input stage and microphone onto the analyzer 2 Insert the input stage into the input stage socket at the top of the analyzer and secure it by turning the threaded retaining ring see Fig 3 1 Connecting a Microphone Extension Cable There are two optionally available extension cables which are recommended for use with the analyzer These are e AO0441 3m long e AO0442 10m long To Connect 1 Gently screw the microphone onto the Input Stage ZC 0026 24 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Mounting the Microphone 2 Insert the input stage into the female plug of the exten sion cable and push gently until it snaps into position 3 Insert the male plug of the extension cable into the input stage socket of the analyzer and push gently until it snaps into position see Fig 3 2 Fig 3 2 Connecting a microphone extension cable to the sound level meter Note Connecting a recommended microphone extension ca ble has no effect on the sound l
57. 3 7 describe what the parameters are and how they affect measurements 36 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements ij set up Meas Ctrl Pre set Time 0000 30 Mess Time OO 02 30 Action after Meas Store All Hest Actioni Feset and Start Fig 3 5 The Set up menu for selecting settings and values for the measurement control parame ters Function Manual or Automatic Control The settings for this parameter are Manual Meas Sequence Logging or Event Logging e When set to Manual the analyzer comes under manual control via its hard and soft keys All remaining items on the display disappear e When set to anything other than Manual the analyzer comes under automatic control 3 5 4 Manual Control Function Manual To start a measurement or reset it and start again press the gt hard key The measurement will proceed perpetually The course a single measurement takes under manual control depends on what hard or soft keys are pressed between the start and end of a measurement If you press the hard key while a measurement is run ning the measurement will pause and the elapsed time coun BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 37 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Meas
58. 46 14 Sound Analysis Software BZ 7210 BZ 7219 and 17 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software What is Measured and Recorded 2 3 3 t T Te 8h 913275 2e Fig 2 2 Lagpa compared to LA q The shaded area repre sents the measurement time Discrete Parameters with Spectrum band data The following discrete parameters are available also with the measurement of octave band or 3 octave band levels see section 2 3 2 for definitions Lxy SPL 4 Lyy Inst Lxeq Lxy Max LxyN1 BZ 7206 only Lxyng BZ 7206 only Lxyn3 BZ 7206 only Lxyn4 BZ 7206 only Lxyns BZ 7206 only Lxy Min 18 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software What is Measured and Recorded 2 3 4 Housekeeping Data The following housekeeping data accompany all measure ments Overload Calculated as a percentage of the current elapsed time Occurs whenever the upper limit of either the analogue or digital circuits is exceeded Underrange Calculated as a percentage of the current elapsed time Occurs whenever the sound level being measured drops below the lower limit of the linear operating range No of pauses Counted during the current elapsed time that is from the measurement start Measurement no 1 The current number of times a given measurement
59. 5 Repeat steps 2 3 and 4 until you are satisfied with the setting or value of each parameter 3 4 3 Range of Settings for Input Parameters Fig 3 4 itemises the input parameters whose settings or val ues can be changed as described in section 3 4 2 The following describes what they are and how they affect measurements Note As with measurement parameters the same conditions as those described in section 3 3 3 apply if you change any of these input parameters during a measurement Input To analyse either the microphone signal or a signal via the AC Input Output sockets the settings are respectively Microphone specified via its serial no or unspecified e AC If an initial calibration has been done by Br el amp Kj r ap plies to all type 2260 s from serial number 1875363 and above BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 38 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Input Microphone or AC with the specified microphone usually the one supplied with the analyzer both microphone serial number and calibration details are registered within the analyzer When selecting a microphone input you can specify either the registered mi crophone its Serial No will appear or an unspecified mi crophone Serial No Unspec will appear If you select the registered microphone the following applies e Microphone data will be documen
60. 510 oo05 3510 Oo06 510 Oo07 351A oo0s 3510 hall Change Drive Create Dir Di Di Dd Di Di Di Dsi g Fig 3 25 The measurement path menu At the end of a measurement period whether it is due to a measurement sequence a logging or an event logging the measurement data files will automatically be stored on the default measurement path which can be seen when Fig 3 25 is displayed The same is true when you manually initiate storage via the m hard key You can however change this as described in the following 1 You can start with Fig 3 5 on display and press the hard key repeatedly until Fig 3 25 appears 2 Now use the lt p A V hard keys to highlight the required path You can even change drive see section 6 2 2 or create a new directory see platform s instruction 62 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements manual via the lt Change Drive gt or lt Create Dir gt soft keys 3 Press the lt Save gt soft key to confirm your choice of path otherwise press the lt Undo gt soft key 3 5 11 Memory Requirements for Logging To get an idea of the amount of memory required for logging assume the following set up and disk space conditions Func Logging Store BB Major Par Store Spec Nothing 17 MB free disk space on a 20 MB disk Log LAF Off BZ720
61. 6 Under these conditions the maximum logging times for var ious logging rates are as indicated in Table3 3 Logged Every Max Log Time 1s 4 days 14 hrs 3s 13 days 18 hrs 5s 22 days 10s 45 days 20s 91 days Table 3 3 Maximum logging times for various logging rates For more complicated set ups the software in the 2260 will warn you at the start of measurement if disk space is insuf ficient For Meas Sequence and Logging one of the following messages may be given BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 63 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu 3 6 3 6 1 Insufficient disk space to complete measurement Possibly insuffi cient disk space to complete measurement Note This last message may be given when the set up in cludes statistics which require varying amounts of disk space depending on the range of measured levels For Event Logging only one of the following messages may be given BZ 7206 only Disk space sufficient only when events make up less than XX of the log time Disk space sufficient only when events make up MORE than XX of the log time The last message is relevant when the event set up is less demanding on memory space than the background set up Note These are warnings only and do not prevent measure ments from being started
62. 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Measurement Parameters Spectrum Bandw Fixes the bandwidth for spectral analyses and can be set to either Setting Frequency Range 1 1 oct 16 Hz to 16 kHz 1 1 oct LF 8Hz to 16kHz 1 3 oct 12 5 Hz to 20 kHz 1 3 oct LF 6 3 Hz to 20 kHz Note Use the two LF settings if you need to analyse below 12 5 Hz However be aware that these settings are more sen sitive to very low frequency noise such as wind noise See specifications for details on the low frequency response Peaks Over Fixes a level for counting the number of times this level is exceeded by peak values separated by 1s or more detected during a measurement The default level is set to 140dB This level must lie within the selected linear operating range If necessary fit an Attenuator ZF 0023 between the micro phone and the input stage This has the effect of reducing the sensitivity of the microphone by 20dB Time Weight Broadband Stat Fixes the time weighting Fast or Slow for measuring sta tistical distributions of broadband noise levels Applies to the level and cumulative distributions of broad band levels as described in sections 5 5 and 5 6 the discrete parameters Lyyn 1 to LxyNs which can appear in the Sound Level Meter display see section 5 4 as well as the broadband columns discussed in section 5 10 See also Tables 2 1 2 2 2 3 and 2 4
63. Fast or Slow Table 2 1 Concurrently measured broadband statistical parameters 10 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software What the Software Does Broadband discrete Parameters Parameter Frequency Weighting Time Weighting Peaks Preselected during set up for Broadband Meas Lpk MaxP See Fig 3 3 Can be Peak Lpk Peak L Inst L SPL A and C LT3 or A and L LT5 Fast and Slow and LTm3 Impulse LTm5 LMax LMin Lim Impulse Leq LAEP d Linear A LAE SEL Leq LAeq Taken from above Taken from above parameters parameters LAIm LAeq Table 2 2 Concurrently measured broadband discrete parameters BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and Enhanced Sound Analysis Software BZ 7206 User Manual 11 Chapter 2 The Software What the Software Does Octave band or 1 3 octave band discrete and statistical Parameters Level and cumulative level distributions as well as five preselected LN values These are calcu lated from 81 accumula tors each 1 dB wide BZ 7206 only A or C or L Parameter Frequency Weighting Time Weighting L INST Preselected during set Preselected during set up for Spectrum Meas up for Spectrum Meas L SPL See Fig 3 3 Can be See
64. Technical Documentation Sound Analysis Software BZ 7210 BZ 7219 and Enhanced Sound Analysis Software BZ 7206 Bruel amp Kj r lt Sound Analysis Software BZ 7210 BZ7219 and Enhanced Sound Analysis Software BZ 7206 For Modular Precision Sound Analyzer 2260 Investigator From serial no 1772136 with BZ 7206 Software Version 2 0 or 2 1 BZ 7210 Software Version 2 0 BZ 7219 Software Version 1 0 Revision March 2002 Briiel amp Kj r BB1046 14 Trademarks IBM is a registered trademark of International Business Machines Inc USA Microsoft is a registered trademarks of Microsoft Corporation in the United States and or other countries Copyright 1995 2002 Briiel amp Kjzr Sound amp Vibration Measurement A S All rights reserved No part of this publication may be reproduced or distributed in any form or by any means without prior consent in writing from Briel amp Kj r Sound amp Vibration Measurement A S Nerum Denmark End User Licence Agreement This product contains software licensed from Microsoft Corporation e The Sound Analysis Software BZ7210 BZ7219 and BZ7206 contain intellectual property that is software programs that are licensed for use by the end user customer hereinafter End User This is not a sale of such intellectual property The End User shall not copy disassemble or reverse compile the soft ware program e The software programs are provided to the end us
65. When you are satisfied with the settings of Fig 6 4 press the lt OK gt soft key to confirm the recall and return to the measurement mode where you can examine the recalled data as well as its set up as described in Chapter 5 Otherwise press the lt Cancel gt soft key and the analyzer will return unchanged to the measurement mode See section 6 2 if you want to store measurement data BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 151 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Storing Set up Data 6 4 Refer to the platform s user manual if you want to copy measurement files to and from an external memory card or to delete them Storing Set up Data 6 4 1 Introduction When you store set up data you save the current status of the following e Measurement parameters see section 3 3 e Measurement control parameters see section 3 5 e Measurement path see Fig 6 2 e Input see section 3 4 e Output section 3 7 e Settings for the following displays Sound level meter see section 3 6 Cumulative distribution see section 5 5 Level distribution see section 5 6 Octave band spectrum see section 5 10 Back erase see section 4 8 Make sure you are satisfied with the status of these before proceeding 6 4 2 How to Store the Current Set up Data 1 Make sure the analyzer is in the set up mode if necessary press the hard key This tells the analyzer that s
66. a Nothing No data storage takes place 40 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements 3 5 6 Automatic Control Function Meas Sequence BZ 7206 only A sequence of measurements is initiated either manually by pressing the y hard key or automatically via a preset timer see section 4 7 Once initiated the sequence of measure ments is controlled via the settings of the remaining items displayed in Fig 3 5 Press the hard key either to pause the analyzer or to regain manual control when started by a preset timer see section 4 7 Press the gt hard key to reset and start the sequence again No of Meas Can be set to any integer number between 1 and 9999 This setting fixes the number of times the measurement is run automatically Preset Time Fixes the duration in hours minutes and seconds of a meas urement from start to automatic stop Any pauses made dur ing the measurement via the hard key are not counted in the preset time The range of possible entries is from 00 00 01 to 99 59 59 Meas Time This is the time a measurement takes to run its course the number of times specified under No of Meas It is auto matically calculated by the analyzer and is equal to the prod uct No of Meas X Preset Time Next Action After the end of first
67. a Octave or 1 3 octave band Lxy SPL Lxy inst The broadband Level Distribution Cumulative Dis tribution and statistics Lxyn1 5 are based upon sampling Lxy inst every 10ms into 0 2dB wide classes over a range of 80dB The octave or 3 octave Band Level Distribution Cumulative Distribution and statistics Lxyni 5 are based upon sampling Lxy inst every 100ms into 1dB wide classes over a range of 80 dB BZ 7206 only Fast Logging LAF Inst can be stored every 100ms during background logging and or during event logging BZ 7206 only Calibration External Acoustic Using the Multifunction Acoustic Calibrator Type 4226 Pistonphone Type 4228 and Sound Level Calibrator Type 4231 Internal Electrical Uses internally generated electrical signal combined with keyed in value of microphone sensitivity Initial Calibration Stored for comparison with lat er calibrations Initial factory calibration traceable in conjunction with ISO 9001 certification CIC Charge Injection Calibration BZ 7206 and BZ7210 only Injects internally generated elec trical signal in parallel with the microphone dia phragm A reference CIC is done automatically during External or Internal calibration and stored for later comparison with a new CIC A manual CIC can be done whenever no meas urement is in progress e An automatic CIC can be part of a logging measurement where the CIC can be set to oc cur up to 4 times in each 24hr period
68. alibration is based on the microphone s sensitivity keyed in by the user Charge Injection Calibration CIC BZ7210 and BZ 7206 only If an external sound source is not available you can check the calibration of the analyzer using its CIC facility Unlike an internal calibration CIC takes the microphone into ac count The results that a CIC check produces allow you to verify if the last acoustic calibration is still valid or if some thing has happened to the microphone preamplifier cabling or the main instrument A guide to fault diagnosis with CIC is given below The Briiel amp Kj r patented Charge Injection Calibration CIC technique enables a complete measurement chain to be verified including the microphone As the name implies the method uses frequency independent injection of charge into the microphone and preamplifier input circuit Theory of CIC When you perform an External Calibration on a microphone specified or unspecified or an Internal Calibration on a microphone unspecified only a reference CIC is also auto matically made and the result stored as a reference Later you may initiate a CIC and compare to the reference A stable CIC ratio assures stable operation of microphone cable preamplifier and the remaining measurement system see Fig 4 2 Practical Implications of CIC For 2260 Investigator frequent use of a precision acoustic calibrator see section 4 3 2 is the ideal means of calibration
69. amples in Fig 3 11 and Fig 3 12 how each block of data is assigned a number For background blocks this number is the same as lt Meas No gt and can be recalled for display using the lt Meas No gt function For event blocks there are two numbers The first is the Event No This is sequentially updated each time a new event occurs no matter what its duration Within each event there may be a number of samples labelled Event Sample No You 52 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements dB Background Logged Every 05 00 1 pets i 11 15 00 Event Synchronisation HBBBBBEU PA oe TEREZE E 970422e Fig 3 12 An example data structure of a log file with background and event data having different logging rates Note the synchronisa tion with the internal clock at 11 05 00 and 11 10 00 can display both the whole event or the individual samples by choosing lt Event No gt or lt Event Sample No gt respectively The 2260 Investigator display will show how many back ground samples have been measured Meas No how many events have occurred Event No and if recording an event which sample is being processed Event Sample No See Fig 3 13 and Fig 3 14 Note When measuring in the background the Event No and Event Sample No fields will be blank
70. and the analyzer will automatically reset and restart the measurement If you accept this press the lt OK gt soft key OR e Press the lt Cancel gt soft key and then press the hard key to pause the measurement and store via the hard key see section 6 2 whatever data have so far been measured After this you can press the y hard key to reset and restart the measurement BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 105 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Starting a New Measurement Manual Control 4 6 If the elapsed time is under one minute no warnings will appear and automatic reset restart will occur without user dialogue Starting a New Measurement Manual Control 4 6 1 Starting Resetting and Pausing a Measurement Starting Resetting To start a fresh measurement press the y hard key This ensures that all counters registers etc are reset to zero and all previous measurement data are deleted See also section 4 5 regarding deletion of previous data Whenever a measurement is in progress the symbol i appears in the top left hand side of the screen in the status line Making a Pause or Continuing with a Measurement 4 6 2 To make a pause at any time during a measurement press the hard key This will stop the elapsed time clock and suspend the gathering of measurement data Whenever a measurement is paused the symbol ii will a
71. apter 1 Introduction How to Use this Manual 30 LAFCInst 3 70 Back Erase Lae Main Param Lar tsPL gt Lcpk MaxF gt Freq Lcrss a Weight Ower load Elapsed Time Fig 1 1 The Measurement Display menu which ap pears after switching on the analyzer 1 5 How to Use this Manual Beginners Before you read the rest of this manual read Briiel amp Kjzer s primer on Measuring Sound This will give you a basic idea of acoustic measurements After that read the following Experienced Users of Acoustic Measurement Equipment It is assumed that you are familiar with operating the plat form Briiel amp Kjzr s Modular Precision Sound Analyzer Type 2260 The manual is built up such that you don t have to read all of it to be able to use it It is built around the five most frequently used operations e Calibrating and setting up see Chapter 3 e Measuring see Chapter 4 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 7 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 1 Introduction How to Use this Manual e Looking at Results see Chapter 5 e Storing and Recalling Data see Chapter 6 e Printing and exporting data see Chapter 7 Menu overviews can be found as fold outs in Chapter 10 in this manual for software dependent menus Overviews of the platform dependent menus can be found as fold outs in the platform s manual Conventions Used in this Manual Hard
72. arameter in the set up BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 27 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Measurement Parameters You will be warned by a pop up display which requires either confirmation press the lt OK gt soft key or cancellation press the lt Cancel gt soft key of the intended parameter change There are two exceptions when no warning is given and pa rameter changes take place immediately these are e When the data so far measured have been stored see section 6 2 e When the measurements have been running for less than one minute Range The analyzer s 80dB linear operating range can be placed between any one of six regular overlapping positions Table3 1 shows settings when calibrated see section 4 4 2 for a Type 4189 microphone with a nominal sensitivity of 26dB re 1V Pa The settings in Table3 1 are for RMS si nusoidal signals therefore the maximum peak level handling is 3dB above the selected range setting Range Settings 50 dB to 130 dB 40 dB to 120 dB 30 dB to 110dB 20dB to 100 dB 10 dB to 90 dB 0dB to 80 dB Table 3 1 Range settings when used with a nominal Type 4189 microphone You can also step change the range position using the s0 hard key 28 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ
73. are 93 9dB and 113 9dB It is pocket sized battery powered and conforms to IEC 942 Class 1 and ANSI S1 40 1984 Multifunction Calibrator Type 4226 This is a calibrator for microphones sound level meters noise dose meters and any other sound measuring equipment re quiring stable and accurate sound references at various levels and frequencies It provides calibration levels of 94dB 104dB and 114dB at discrete frequencies starting at 31 5Hz and increasing in octaves to 16 kHz It is also capable of checking the crest factor handling and time weighting of a sound level meter It is small battery powered and conforms to IEC 942 Class 1 and ANSI 81 40 1984 Pistonphone Type 4228 This is a laboratory standard reference sound source which produces 124dB nominally at 250 Hz It is small battery powered individually calibrated and conforms to IEC 942 Class 1L Class OL with suitable external barometer and ANSI 1 40 1984 4 3 3 Internal Calibration If an external sound source is not available you can calibrate the analyzer using its internal calibration facility An internal calibration does not take the microphone into account BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 87 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration Practice and Theory 4 3 4 This method applies a stable internally generated 1kHz sig nal to the input stage microphone preamplifier and the c
74. are BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Profile Use the two soft keys as follows lt Display Menu gt return to Fig 5 1 lt Back Erase gt for removing bad data see section 4 8 5 7 2 Logging or Event Logging Functions This facility applies only to the current measurement It al lows you to visually monitor the variation of the measured parameter Lap Inst over the previous 60 seconds Note A profile can only be stored using the BZ 7206 Log LAF facility described on pages 3 24 and 3 27 Markers This facility applies only to the current measurement It al lows you to monitor the variation of the parameter LAF Inst over the previous 60 seconds and set markers ep Mea Markers 14 27 52 Next W FECLPUDE LAF Inst gt 110 dE gt Fig 5 11 Profile Markers measurement menu show ing the variation of LAF Inst over the previ ous 60s in Logging Function Marker Set up For Event Logging the profile displays the trigger levels if Trigger is set to Level BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 131 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Profile 12 12 23 Tj Meaz Profile OK LAF Inst 3 ae SIE ma O L PAAYL BJ Stop Level Cancel Fig 5 12 Profile Markers measurement menu show ing adjustment of trigger level in Event Log ging Function BZ 7206
75. are stored in this example 941861e Fig 4 18 Example of a measurement routine performed four times and initiated three times by a timer The total number of measure ments is 12 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 111 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Timers and Automatic Measurements Timer actions are separated in time by whatever value is entered in the field next to Start Every in Fig 4 17 Fig 4 18 shows that for each timer initiation the analyzer performs and stores the results of the measurement four times For three timer initiations therefore the total number of stored results is 12 stored in three files 4 7 4 Steps in Setting Up a Timer controlled Measurement The following steps should be followed when you want the analyzer to make measurements automatically under timer control 1 Set up the measurement parameters section 3 3 2 Set up the measurement control parameters section 3 5 3 Set up the measurement path section 6 2 4 Set up the input parameters see section 3 4 5 Store the required measurement set up section 6 4 6 Set up the timers section 4 7 2 7 Switch the analyzer off and place it where the measure ments are required 4 7 5 Multi timer Control Several timers with different measurement set ups can be used in shift to activate the analyzer An good example would be day and night time measurements during a weeken
76. at 20 kHz lower centre frequency depends on the Spectrum setting See section 3 3 3 There are also three broadband columns on the right of the spectrum Two are shown together the third on its own Time weightings are shown below the columns and frequency weightings fixed as described in section 3 3 3 and Table 3 2 are shown above them The time weighting of the bars shown together is user selectable via the lt Time Weight gt soft key The single bar always shows the Peak value Ly Peak where X is set up as either C or L as described in section 3 3 3 Use the soft keys as follows BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 139 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Spectrum Levels lt Display Menu gt to return to Fig 5 1 Fig 5 2 for a re called measurement lt Back Erase gt for removing bad data not in logging see section 4 8 lt Cursor gt to step and select any displayed band The centre frequency and the level in a selected octave band are displayed in terms of PHz and QdB In Fig 5 17 this happens to be 250Hz and 62 0dB When the cursor moves to one of the broad bands X Hz will for example be replaced by Lap Inst Lop Inst or Lyp_ Peak as the case may be The cursor can also be moved using the lt or p hard keys lt Time Weight gt to step and select a time weighting F S or I for the two broad bands shown togethe
77. based software packages can be used for post processing and reporting Noise Explorer Type 7815 for data management and reporting Evaluator Type 7820 for Community Noise calculations or Protector Type 7825 for calculating Personal Noise Exposure Alternatively data can be exported to other standard software packages such as word processors and spreadsheets Accessories 1 4 Briiel amp Kj r also produces a range of accessories for use with each application software These accessories can be those necessary for measurement or items which facilitate your measurements Support and After sales Service In addition Briiel amp Kj r provides a high level of support and after sales service in the rare event of problems and holds customer days and training for both novices and advanced users alike Experiment After you have installed the software see section 1 1 and mounted the microphone see section 3 2 switch on the an alyzer This will lead to the display shown in Fig 1 1 Press the hard key to ensure that the symbol appears in the top left hand corner of the display to signify that a meas urement is in progress Press the lt hard key to minimise the list of menu items and expose the display fully Press again to show menu If you want the full story have a look at Chapter 5 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Ch
78. cribed in section 5 10 1 have also the same functions In addition there are the following lt Current Meas gt to return to displaying the current measurement lt File gt to A increment or Y decrement the File thereby recalling a new data file BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 141 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing CIC Results BZ 7210 and BZ7206 only lt Meas No gt to A increment or WY decrement the measurement number in a recalled measurement se quence or logged measurement lt Event No gt to A increment or Y decrement event measurements BZ 7206 only lt Sample No gt to A increment or W decrement the event sample number in a recalled event BZ 7206 only 5 11 Viewing CIC Results BZ 7210 and aij Mess Automatic CIC 003 5307000 1 0 01 dE 1997 Sep 17 231 3a 07 1 BZ 7206 only With Fig 5 1 on display press the lt Auto CIC gt soft key to display a CIC log Fig 5 19 Ditt Date 0 00 dB 1997 Sep 17 23 01 12 0 00 dE 1997 Sep 18 01 00 10 0 02 dB 1997 ep 15 02101 3 anjn En Fig 5 19 Example CIC results log The first column shows the difference between the measured CIC ratio and the reference CIC ratio obtained during the last calibration 142 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapte
79. d marker to the left or right BZ7206 only or to delete the marker 4 When you have finished editing the marker s press gt repeatedly until the Marker menu appears to the right or wait until all markers have disappeared off the left hand edge of the display Zooming the Y axis Use the hard keys to zoom or unzoom the y axis The y axis zooms in 10dB steps between 80 and 30dB The full scale of the y axis is set so that the profile remains in the middle of the screen 5 8 Control of Sound Recording on a PC 5 8 1 PC Sound Recording To be sure of what had caused a marked event you can record sound directly onto your PC s hard drive With Evaluator Type 7820 version 4 0 or Noise Explorer Type 7815 version 4 0 or Protector Type 7825 version 4 0 installed on your PC you can use 2260 Investigator to control sound BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 133 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Control of Sound Recording on a PC 5 8 2 recording on the hard disk while making measurements The only limit to duration is the size of the hard disk Sound recording can be tagged to one or more markers There is a 60s sound buffer in the PC to permit editing of markers up to 1 minute after the occurrence has taken place BZ 7206 only Recordings are time stamped and stored as wav files After transferring the measurement data from 2260 to 7815 2
80. d Pausing a Measurement 106 Measuring According to Standards 106 4 7 Timers and Automatic Measurements 107 THitrod ction 26 ces cede wu Qu n nhi ces ukush ahay 107 Setting Up a Timer aiaeeiiee N Ro in E E a ia 108 Range of Available Settings for Timers 109 Steps in Setting Up a Timer controlled Measurement 112 Mwulti tim riControll a n s e R nS 112 4 8 Deleting Bad Data from a Measurement 113 How to Remove Bad Data 113 82 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Introduction 4 1 4 2 4 2 1 Introduction This chapter will explain How to make a measurement What calibration methods are available How to calibrate the analyzer The consequences of resetting the analyzer Manual control during a measurement Automatic control of the analyzer How to delete bad data from a measurement Making a Measurement A typical standard noise measurement procedure consists of the following three basic steps 1 Calibration 2 Measurement 3 Calibration check One of the many factors affecting the acceptability of results will be the magnitude of any calibration drift during a meas urement hence steps 1 and 3 above The analyzer is able to report this as a matter
81. d above for a regis tered microphone input but with no mention of an Initial Calibration in steps 2 and 8 Instead of applying a calibrator to the microphone steps 4 to 6 apply the calibration signal to both of the AC Input sockets In step 6 there will be no check on the presence of a ZF 0023 and no reference CIC as in step 7 Tip If during measurements you wish via AC Output to make a tape recording for later analysis remember first to record at least one minute of the calibrator s signal when calibrating the microphone On playback use the calibrator s recorded signal for calibrating the analyzer via both AC inputs before analysing recordings made during the measure ments Furthermore remember to account for any playback gain as well as any gain differences between recording the calibrator signal and recording the noise signals Procedure for Internal Calibration Note This should be used only for an input from an unspec ified microphone because no change in microphone sensitiv ity is admitted for a registered microphone See section 3 4 You can however use an internal calibration in connection with a registered microphone only for adjusting the A D and D A convertors BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 99 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration 1 Press the A hard key to get a calibrate menu There are three possibilities and
82. d by no more than 0 5 dB EN 50082 2 1995 Industrial environment RF immunity implies that sound level indications of 55dB or greater will be affected by no more than 0 5 dB Note the above is only guaranteed using accessories listed in these Specifications Temperature IEC 60068 2 1 amp IEC 60068 2 2 Environmental Testing Cold and Dry Heat Operating Temperature lt 0 5dB 10 C to 50 C 14 F to 122 F Storage Temperature 25 C to 70 C 13 F to 158 F Calibration IEC 60068 2 3 Damp Heat 90 RH non condensing at 40 C 104 F Effect of Humidity lt 0 5dB for 30 lt RH lt 90 at 40 C 104 F and 1kHz Non operating IEC 60068 2 6 Vibration 0 3mm 20 m s2 10 500 Hz IEC 60068 2 27 Shock 1000 m s IEC 60068 2 29 Bump 1000 bumps at 250 m s Initial factory calibration traceable in conjunction with ISO 9001 Note The EMC standards prescribe tests with cables connected to all inputs and outputs That is Two AO0440 BNC to LEMO cables connected to AC I O 1 and AC I O 2 Two AO 0440 BNC to LEMO cables connected to Aux Output 1 and Aux Output 2 One AO 1442 Serial Communication Cable One AO0441 3m OR one AO 00442 10m Microphone Extension Cable External AC DC Power Supplies Br el amp Kj r ZG 0386 7 8 EMC standards are not guaranteed to be fulfilled with cables and power supplies other than those mentioned above 182
83. d each with its own timer set up menu Here day time measure ments with data storage could be performed every hour and night time measurements with data storage could be per formed every 20 minutes 112 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Deleting Bad Data from a Measurement 4 8 Deleting Bad Data from a Measurement Introduction Bad data can be removed immediately from a current meas urement manually The analyzer provides a monitoring facil ity similar to Profile see section 5 7 combined with a Back Erase facility which allows you to erase up to 15 seconds of the latest data If there is less than 15 seconds of data then you can erase only as far back as the last pause or the start of measuring whichever is the more recent Note The Back Erase facility requires that the analyzer be paused and is only available in the Manual Automatic or or Meas Sequence functions The Logging and Event Log ging functions do not have back erase To edit Logged files that contain bad data use the marker facility and then edit the data using Evaluator Type 7820 PC software 4 8 1 How to Remove Bad Data 1 Pause the analyzer by pressing the hard key 2 Press the rg hard key to display one of the menus containing a lt Back Erase gt soft key for example like that shown in Fig 4 19 3 Press the lt Back Erase gt soft key
84. d on the PC Viewing the Set up of a Recalled Measurement With Fig 5 2 on display press the lt Recalled Set up gt soft key This will display one of the six available Measurement Set up menus an example is shown in Fig 5 14 Use the soft keys as follows lt Display Menu gt to return to Fig 5 2 lt Current Meas gt to return to displaying the current measurement lt Page gt to A increment or WY decrement the set up page number lt File gt to A increment or Y decrement the File thereby recalling a new data file 136 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Spectrum Levels HEj Meas Recalled Set Display 000i 21A 18 Menu Measured att E L i997 Aug 21 1l4 44 29 Wess Meas Parameters Range 30 6 110 6 de Page Pesks Oywer 140 de Barnidwidth 1 l oct Page k j k Fig 5 14 Example of a Display Set up menu in the Measurement mode lt Meas No gt to A increment or WY decrement the measurement number in a recalled measurement se quence or logged measurement lt Event No gt to A increment or Y decrement event measurements BZ 7206 only lt Sample No gt to A increment or W decrement the event sample number in a recalled event BZ 7206 only 5 10 Viewing Spectrum Levels 5 10 1 Current Measurements With Fig 5 1 on disp
85. display set up will be the same as that for current measurements see section 3 6 3 aij Meas SLM 0026 530 0003 40 LAFCInst 0 JE Current Meas Main Param Display Menu Freq Weight Fig 3 82 Page 1 of Recall Sound Level Meter menu for examining selected measurement param eters of a recalled measurement With Fig 3 32 on display press the lt Current Meas gt soft key to switch back to displaying current measurements With Fig 3 33 on display increment decrement the file number using the lt File A gt and lt File Y gt soft keys to re call next or previous files With Fig 3 33 on display increment decrement the measure ment number using the lt Meas No A gt and lt Meas No Y gt soft keys to recall the next or previous measurement from a sequence of measurements or from a logging 74 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu Tj Meas sSLM Fig 3 83 Showing the third page of the menu for Fig 3 82 when recalling a measurement se quence or a logging measurement Sample Event Ho w sk Sample Fig 3 84 Showing the fourth page of the menu for Fig 3 82 when recalling an event logging BZ 7206 only BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 75 Enhanced Sound Analysis Software BZ 7206 User Manua
86. distribution of a recalled meas urement showing the first page of its menu For a recalled measurement see section 6 3 there are extra menu pages available with the cumulative distribution See the example in Fig 5 5 The soft keys with the same names as those described in section 5 5 1 also have the same func tions In addition there are the following lt Current Meas gt to return to displaying the current measurement BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 125 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Level Distribution 5 6 lt File gt to A increment or W decrement the File thereby recalling a new data file lt Meas No gt to A increment or WY decrement the measurement number in a recalled measurement se quence or logged measurement lt Event No gt to A increment or WY decrement event measurements BZ 7206 only lt Sample No gt to A increment or Y decrement the event sample number in a recalled event BZ 7206 only Viewing a Level Distribution 5 6 1 Current Measurements With Fig 5 1 on display press the lt Level Distribution gt soft key to display the level distribution curve The examples in Figs 5 6 and 5 7 show for a class interval of 1dB the level distributions of a fluctuating broadband noise level Fig 5 6 shows the un zoomed graph and Fig 5 7 shows the zoomed graph Use the soft keys as follows
87. e ments Basically the Logging function is the same as Meas Sequence see section 3 5 6 with the following differences e Measurement time is input directly in terms of days hours minutes and seconds maximum 100 days BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 43 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements e The Logging rate need not be an integer factor of Meas urement time e Logging is synchronised with the internal clock in 2260 Investigator Observer such that logging samples begin and end on convenient hours minutes seconds where possible i e when you specify a logging interval that divides evenly into the internal clock s hours minutes seconds reading e Automatic CIC checks can be integrated into Logging Logging is initiated either manually by pressing the gt hard key or automatically via a preset timer see section 4 7 Once initiated the sequence of measurements is controlled via the settings of the remaining items displayed in Fig 3 9 aij set up Meas Func i Logging Heas Time 00 01 00 0000 Log LAF Logged Every 00 00 01 Store BE Major Par Store Speci MHothing Fig 3 9 The Logging screen Log Lap settings for BZ 7206 only Press the hard key either to pause the analyzer or to regain manual control when started by a preset timer see section 4 7 Press the gt hard k
88. e upper limits and the lower limits Inherent Noise Level Inherent noise is the combination of the electrical noise and the thermal noise from the microphone at 20 C Typical values using Microphone Type 4189 with a nominal sensitivity are given in Fig 8 5 and Fig 8 6 The typical broadband values are Electrical Thermal Com Weighting Noise Noise bined 2260 4189 Noise A 12 3dB 14 6 dB 16 6dB C 14 0 dB 15 3dB 17 7 dB Lin 19 2 dB 15 3dB 20 7 dB 5 Hz 20kHz Lin 26 4dB 15 3dB 26 7 dB 3Hz 20kHz Frequency Weighting Fig 8 7 shows the curves for the frequency weight ings A C and Lin They do not include the re sponse of the microphone Tone burst Response Fig 8 8 shows the response to 4kHz tone bursts of various durations Resolution Discrete Parameters 0 1 dB Broadband Statistics 0 2 dB Octave and octave band Statistics 1dB BZ 7206 only Octave and 1 octave Band Filters Conform to IEC 61260 1995 07 Octave Bands and 1 3 octave Bands Class 0 plus Amendment 1 2001 09 and ANSI S1 11 1986 R 1993 Oc tave Bands and 1 3 octave Bands Order 3 Type 0 C Optional Range Octave Band Centre Frequencies Nominal 8Hz 16Hz 31 5Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz 16 kHz Exact 7 81Hz 15 63kHz 31 25Hz 62 5Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz 16 kHz Real time Frequency Range 8 Hz to 16 kHz cen tre frequencies F
89. e input is selected and the analyzer is set up to provide the correct polarization voltage for the microphone in use See section 3 4 94 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration 1 Press the A hard key to get a calibrate menu There are three possibilities and the one that comes up is the one used last time together with settings and values All will have a lt Calib Menu gt soft key in the menu column If the display does not resemble Fig 4 7 press the lt Calib Menu gt soft key and on the subsequent dis play press the lt External gt soft key to get Fig 4 7 2 Use the lt A gt and lt Y gt soft keys to adjust the value of the Calibration Level to match the external refer ence level The example shown in Fig 4 7 is the default value which applies to a Sound Level Calibrator Type 4231 The adjustment range of the Calibration Level is from 0 0dB to 200 0 dB re 20uPa At first it will always have the previously used value in the case of Fig 4 7 93 9 dB Fig 4 7 also shows the dates for the Last and Initial calibrations See note after step 7 Mount the calibrator jon the microphone snitch it on and press OK when ready Fig 4 8 Calibrate External menu inviting you to pro ceed with the next step For Sound Level Calibrator Type 4231 94dB for diffuse field or 93 9dB for fr
90. e measured distribution lt Band gt to step through and select either a spectrum band or the broadband BZ 7206 only Note the frequen cy and time weightings of these are fixed by the set up described in section 3 3 3 and Table 3 2 lt Class gt to A increase or W decrease the width of the class interval Possible class intervals are 1dB 2dB 5dB 10dB and 20dB 5 6 2 Recalled Measurements For a recalled measurement see section 6 3 there are extra menu pages available with the level distribution See the example in Fig 5 9 The soft keys with the same names as those described in section 5 6 1 have also the same functions In addition there are the following lt Current Meas gt to return to displaying the current measurement lt File gt to A increment or Y decrement the File thereby recalling a new data file lt Meas No gt to A increment or WY decrement the measurement number in a recalled measurement se quence or logged measurement lt Event No gt to A increment or Y decrement event measurements BZ 7206 only lt Sample No gt to A increment or Ww decrement the event sample number in a recalled event BZ 7206 only 128 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Level Distribution Meas Cumulative Di Hz L F aTdb 4 Display Menu NOOR SA
91. e the various outputs available for printing and exporting data using the hard key The Print Output set up together with what is currently on display decides the content of the analyzer s output See also the platform s instruction manual General Procedure Cancel Fig 7 1 Example of a message while printing is tak ing place The general procedure for sending data to an external device comprises the following three steps 1 Connect the analyzer to the external device and set it up as described in the platform s user manual 2 Select the appropriate display see Table 7 1 Not neces sary for output to a data file see section 7 4 3 160 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 7 Printing and Exporting Data Output to a Printer 3 Press the hard key Fig 7 1 shows an example of a message which appears on the screen while printing takes place If you want to cancel during printing press the lt Cancel gt soft key Errors If the printer does not print out or the data is not transferred to the computer check e The output set up of the analyzer and ensure that the analyzer s baud rate and handshake see the platform s user manual are the same as the printer s or computer s Switch the computer or printer on again some printers only check the baud rate while switching on e The interface cable betwe
92. ed set up specifies that a CIC check is to be done before and after the measurement the start of the meas urement will be delayed by approximately 15 seconds BZ 7210 and BZ 7206 only First Stop No Date and time of finishing a measurement for the first time The field entries are fixed automatically by adding Meas Time to First Start When the selected set up specifies that a CIC check is to be done before and after the measurement the end of the meas urement will be delayed by approximately 15 seconds BZ 7210 and BZ 7206 only of Starts Any integer value from 1 to 99 This is the total number of times you want to start the measurement 110 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Timers and Automatic Measurements Start Every The time interval between the start of each successive meas urement This interval must not be less than Meas Time Example Fig 4 18 shows an example which illustrates the actions of the analyzer for a specific routine performed four times and initiated on three separate occasions by a timer The set up used here is the same as the example shown in Fig 3 5 that is Func Meas Sequence No of Meas 4 Next Action Reset and Start Preset Time Meas Time x Preset Time Start Ever Store Measurement Data A total of 3 x 4 12 measurements
93. ee field For Multifunction Acoustic Calibrator Type 4226 94dB for both diffuse and free field For Pistonphone Type 4228 the nominal value is 124dB for both diffuse and free field BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 95 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration 3 Press the lt Calibrate gt soft key and wait until the in ternal calibration of the A D and D A converters is done and Fig 4 8 appears 4 Carefully mount the calibrator on the microphone and make sure it is a snug fit see Fig 4 9 Rest the analyzer on a table or other flat surface 5 If you are using a multifunction acoustic calibrator set it up to calibrate at 94dB at 1kHz see the calibrator s instruction manual if 941730e DA Fig 4 9 Fitting Sound Level Calibrator Type 4231 onto the analyzer 96 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration 6 Switch the calibrator on the quasi analogue bar at the bottom of the display will follow any level fluctuations wait until these have stabilised and then press the lt OK gt soft key to start the calibration At this stage the analyzer will search for a 20dB atten uation to determine whether the ZF 0023 is mounted or not You will be given the chance to rectify this 7 When the screen shown in Fig 4 10 appears remove the
94. eed with an internal calibration of its D A and A D con verters and afterwards if external calibration has been se lected will be ready to proceed with this that is to adjust itself to the calibration level you have entered During the calibration procedure the analyzer is automati cally set to a reference measurement range decided by the calibration level as sensed by the analyzer Table 4 1 shows what this will be for various calibration levels 92 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration Sensed Reference Measurement Calibration Level Range 124dB 50 dB to 130 dB 114 dB 50dB to 130 dB 104 dB 40dB to 120 dB 94dB 30dB to 110 dB Table 4 1 Measurement range settings for various cal ibration levels and a nominal Type 4189 microphone Calibrating for Free field or Diffuse field Measurements The analyzer is calibrated in the same way for free field measurements according to IEC and diffuse field measure ments according to ANSI However the calibration levels for some calibrators may be different depending on which measurements are to be made See the calibrator s user man ual for more details Each individual calibrator is slightly different The actual calibration level is not necessarily equal to the nominal cal ibration level It is therefore important to set the ca
95. el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu Measurement Parameter 21 LxYN5 22 Lyy Min 23 Laepa see section 2 3 2 24 Overload 25 Underrange 26 No of Pauses 27 Measurement No 28 Start Date 29 Start Time 30 Nothing see step 5 for Fig 3 31 31 Stop Date 32 Stop Time 33 Event Number BZ 7206 only 34 Event Sample No BZ 7206 only Table 3 4 Continued Complete list of measurement parameters Note X and Y denote frequency and time weightings respectively displayed the number of the displayed measurement appears next to the file number see Fig 3 32 When an event logging measurement is recalled BZ 7206 only the screen shows the file number plus either the back ground measurement number or the event number and the sample number within the event depending on whether the BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and Enhanced Sound Analysis Software BZ 7206 User Manual 73 Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu displayed measurement sample belongs to the background or an event see Fig 3 34 When displaying recalled data the menu column extends over more pages than it does when displaying current measure ments see the examples shown in Fig 3 32 Fig 3 33 and Fig 3 34 Otherwise the
96. en the analyzer and the printer or computer e Which port is used on the computer If none of these steps work consult your local Briel amp Kj r service representative 7 3 Output to a Printer 7 3 1 Introduction See also section 7 2 which describes the general procedure for sending data to an external device Table 7 1 shows the relationship between what is currently on display and what is printed out Use it to select the display which gives the required printed output When Format in the Print Output Set up Menu is set to Table Graph or Table Graph or when Type is set to Spreadsheet the output depends on the current display Table 7 1 tells you what the output will be for various current displays BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 161 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 7 Printing and Exporting Data Output to a Printer See section 7 3 2 for a description of the contents of the print ed measurement data Current Display Printed Output Sound Level Meter Overall results Level Distribution Level distribution Cumulative Distribution Cumulative distribution Spectrum Spectrum Automatic CIC BZ 7210 or BZ 7206 only Automatic CIC Set ups Set up Anything Else No Print error message Table 7 1 Printed output for various current displays where Format is set to Table Table Graph
97. ent block the 2 seconds of data arriving before the event took place Similarly the post trigger allows data to be re corded in the event block after the event has finished In this way you can be sure of recording the whole event Fig 3 15 shows the pre and post trigger situation graphically You can set the pre or post trigger to be from 0 to 15 seconds If this results in overlapping times for example if the event is very short 2260 Investigator will curtail the times appro priately External Trigger The external trigger is input via pin 9 of the 2260 RS 232 interface connector see Fig 3 17 Pin 9 is polled by the in strument once per second The voltage on the pin at polling time determines the trigger state BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 55 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Level Trig Start Trig Stop gt Time s 0 1 Pre trig Post trig p Event 970427e Fig 3 15 Graphical explanation of pre and post trigger Trigger Start Pre Trig Stop Post Trig Fig 3 16 External trigger set up screen 56 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kjeer Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements I 4 9 V 3 9V I I I I I 9 9 V for even
98. ent name and a text cursor _ e A character set and a cursor highlighting the current character Press the A Y lt p hard keys to move the char acter set cursor to the character you want to insert Press the lt Insert Char gt soft key to insert the selected character at the current position of the text cursor Press the lt Back Space gt soft key to delete the character at the current position of the text cursor and move the text cursor one space to the left With the desired name in the box press the lt OK gt soft key to create the name and return to the Store menu If however you want to cancel storing a set up with this name press the lt Cancel gt soft key instead of the lt OK gt soft key at any point in step 6 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 155 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Recalling Set up Data 6 5 6 5 1 6 5 2 Recalling Set up Data Introduction Before you can recall a set up the analyzer must be in the set up mode which is indicated by Set up in the top left hand corner of the display and paused When you recall a set up you re install the set up and its status which is stored in the given set up file See also section 6 4 1 Note Recalling another set up during a measurement pause will automatically reset the analyzer This means that data so far measured will be deleted and overwritte
99. er as is without warranty of any kind either expressed or implied including but not limited to warranties of merchantability and fitness for a particular purpose the entire risk of the quality and performance of the soft ware program is with you e Microprocessor and Memory Distribution Limited and its suppliers shall not be held to any liability for any damages suffered or incurred by the end user including but not limited to general special conse quential or incidental damages including damages for loss of business profits business interruption loss of business information and the like arising from or in connection with the delivery use or perform ance of the software program Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Contents Introduction Introduces the analyzer the scope of its measurements and how it works What the Software Does Describes what the software does how to operate it and what it measures Setting Up the Analyzer Explains how to mount the microphone on the input stage connect extension cables set up measurement and control parameters and set up the sound level meter display Measuring Explains how to make a measurement what calibration methods are available and calibration procedures the effect of a reset manual and automatic control and how to delete bad data Viewing Results E
100. er above the display there are 19 of them Soft keys are multi function keys and are located on the right of the display there are five of them They are context sensitive and their function is determined by whatever name appears in the display next to them BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 13 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software Operating with the Software 2 2 2 2 2 3 2 2 4 See the first two chapters of the platform s instruction manual for full details on how to find your way around the analyzer s menus via its hard and soft keys The Four Operational Modes The analyzer operates in one of four modes each initiated by its own hard key Listed here with their respective hard key icons these are e HU System see platform s instruction manual r Set up see Chapter 3 I Measure see Chapter 4 A Calibrate see section 4 4 Handling Data Post measurement data can be handled in two different ways that is stored and subsequently recalled or copied to an external device Stored and Recalled All measurement and set up data can be stored in files from where they can be recalled at any time You decide whether to store internally on the disk or externally on a PCMCIA memory card Chapter 6 has all the details Copied to an External Device Data can also be sent out to an external device via the ana lyzer s
101. eral procedure for sending data to an external device There are two output facilities for transferring measurement data to a PC The first is for a spreadsheet and the second is for a data file BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 163 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 7 Printing and Exporting Data Output to a PC 7 4 2 7 4 5 7 4 4 Spreadsheet When Type in the Print Output Set up Menu is set to Spreadsheet the output is the same as for Type set to one of the printers but with the following exceptions e The output is formatted for spreadsheets and consists only of tabulated ASCII characters There are no graphs e For cumulative and level distributions The class width is always 1dB The output is the data for all octave bands or 1 3 octave bands as well as the broad band Data File Note the output to a data file requires that data have been recalled while one of the five measurement displays Sound Level Meter Cumulative Distribution Level Distribution Re called Set up or Spectrum is currently on the screen When Type in the Print Output Set up Menu is set to Data File the output is raw measurement data in binary form from a measurement file recalled as described in section 6 3 for further post processing in a computer PC Software from Briel amp Kj r Use one of Br el amp Kjzr s Windows based software packages for post processing and
102. eres 10 11 12 29 profile Impulse 11 140 SLM parameters PA PE S O n as 29 spectrum levels Slow 10 11 12 29 Timers 107 172 w available settings 409 Weight unas aspasia 174 set up L08 set up menu 108 Tone burst response Z Transfer key ZC 0026 Tripod ZF 0023 i use With es rsin na SE 84 ZooDmEranpe ER d2 67 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 187 Enhanced Sound Analysis Software BZ 7206 User Manual 188 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 10 Fold out Menu Overviews 10 1 BZ7206 BZ7210 and BZ 7219 Software Menus 190 10 2 Platform Menus asas 190 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 189 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 10 Fold out Menu Overviews BZ 7206 BZ 7210 and BZ 7219 Software Menus 10 1 10 2 BZ 7206 BZ 7210 and BZ7219 Software Menus Overviews of the menus for the BZ7206 BZ 7210 BZ 7219 Sound Analysis Software are shown in fold outs in Figs 10 1 and 10 2 These are e Set up Fig 10 1 e Calibrate Fig 10 1 e Measurement Fig 10 2 Platform Menus Platform menus are marked thus t and are independent of the software used with the platform Overviews of all platform menus are shown in the platform s user manual 190 Sound Analysis Sof
103. eseseass 130 Manual Automatic or Meas Sequence Functions 130 Logging or Event Logging Functions 131 Control of Sound Recording on a PC 133 PC Sound Recording cccccccsssssceccccesssessseeeeeeesesssseaeees 133 Recorder Set up 134 Connecting to a PC 135 Viewing the Set up of a Recalled Measurement 136 Viewing Spectrum Levels aaa aaaa 137 Current Measurements 137 Recalled Measurements 141 Viewing CIC Results BZ 7210 and BZ7206 only 142 118 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Results 5 1 Viewing Results 5 1 1 Introduction The results of a measurement whether current or recalled can be viewed in several ways All current results are view able in real time via the Measurement mode 5 1 2 Scope for Viewing Current Measurements jeas Menu Sound Level Heter Cumulative Distribution Lengel Distribution Profile Spectrom Elapsed Time Fig 5 1 Measurement Display menu itemising vari ous ways of viewing current measure
104. ess the lt Edit Display gt soft key to get the picture shown in Fig 3 28 fm Mess Edit Display Fig 3 28 Showing the picture for selecting which measurement parameter field is to be edited In this example it is the field of the ana logue display bar 2 Ensure viathe A and Y hard keys that the text label of the analogue display bar is highlighted as shown in Fig 3 28 3 Now press the lt Edit Field gt soft key to get the display shown in Fig 3 29 4 Select via the lt Zoom Range gt soft key which setting 4 dB 10 dB 20 dB or 40 dB you require 5 Highlight via the a and vY hard keys which item under Parameter you want represented by the ana logue display bar Use the lt Freq Weight gt and lt Time BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 67 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu jeas Edit Field Zoom Range Parameter Lepe Feak gt FT oe j req asss Height Time Weight Fig 3 29 Edit Field menu for selecting the zoom range and which measurement parameter is represented by the analogue display bar Weight gt soft keys to select respectively frequency and time weightings Note Since the time weighting for Ly px Peak is always fixed the lt Time Weight gt soft key appears only when Lyy Inst is highlighted 6 When you have made the settings you require
105. evel meter s calibration There fore you do not have to re calibrate after connecting one of the recommended microphone extension cables BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 25 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Measurement Parameters 3 3 Setting Up the Measurement Parameters 3 3 1 Introduction This section will explain how to set up measurement param eters such as range time weighting and frequency weighting Once they are set up they are not normally changed until the measurements are completed See section 3 4 for setting up the microphone polarization voltage and the valid sound incidence correction See section 3 5 for setting up the analyzer to control meas urements according to specified requirements 3 3 2 Selecting Measurement Parameters 1 Start by pressing the set up hard key symbolised by and then get the Set up Measurement Parameters menu Fig 3 3 on display and proceed as follows 2 Usethe lt p A VY hard keys to step through the various fields of selectable parameters until the one you want to change is highlighted 3 Then withthe lt A gt and lt Y gt soft keys step through the available settings or values of that parameter until the one you need is displayed This will also cause the lt Save gt and lt Undo gt soft keys to appear The range of available settings for each measure ment
106. ey to reset and start the sequence again 44 Sound Analysis Software BZ 7210 BZ 7219 and Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Meas Time Fixes the duration in days hours minutes and seconds of a measurement from start to automatic stop Any pauses made during the measurement via the hard key are counted in the measurement time The range of possible en tries is from 00 00 00 01 to 99 23 59 59 Log Lar BZ 7206 only Lap Inst is logged every 100 ms if Log Lap is set to On and Logged Every is set to 00 00 01 The logged Lap Inst values are stored together with the other logged data The Profile see fig 5 10 displays the Lap Inst values while measuring Note The logged Lap Inst values cannot be displayed by the 2260 The data has to be transferred to PC software Noise Explorer Type 7815 Evaluator Type 7820 or Protector Type 7825 for display Logged Every Fixes the duration in hours minutes and seconds of logging samples Any pauses made during the measurement via the 1 lt hard key end the current logging period and store the sample if specified A subsequent continue via the hard key resumes the logging with a new logging period The pause between the two samples is included in the measurement time The range of possible entries is from 00 00 01 to 99 5 9 59 For the following logging inte
107. fitted with Prepolarized Free field 1 2 Microphone Type 4189 Normal setting extended low frequency setting and extended low frequency setting when the optional accessory UC 5265 is fitted between the microphone and the input stage ZC 0026 Note UC 5265 damps approximately 0 50B please re calibrate before usage Mask shows IEC Type 1 tolerances BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 181 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Compliance with Standards 8 2 Compliance with Standards C Tick mark indicates compliance with the EMC requirements of Australia and CE mark indicates compliance with EMC Directive and Low Voltage Directive C New Zealand Safety EN 61010 1 and IEC61010 1 Safety requirements for electrical equipment for measurement control and laboratory use UL3111 1 Standard for Safety Electrical measuring and test equipment EN 50081 1 Generic emission standard Part 1 Residential commercial and light industry CISPR 22 Radio disturbance characteristics of information technology equipment Class B Limits FCC Class B Limits Note the above is only guaranteed using accessories listed in these Specifications EMC Emission EMC Immunity EN 50082 1 Residential commercial and light industry RF immunity implies that sound level indications of 40 dB or greater will be affecte
108. formed by BZ 7206 this has no practical significance BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 169 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications Measurement Range 1 1 octave 26dB to 130 dB 1 3 octave 22dB to 130 dB Detectors The analyzer contains several detectors working in parallel on every measurement Lin weighted peak Conforms with IEC60651 Onset Time lt 100 us C weighted Peak The peak detectors give the following responses to a single cycle tone burst compared with the theoretical value based on the RMS level of a continuous tone with the same amplitude Peak minus Tolerance Continuous Frequency 8kHz 3 4dB 1 0dB A weighted Broadband detector channel with three exponential time weightings Fast Slow Im pulse one linear averaging detector and one peak detector C or L weighted switchable Broadband de tector channel with three exponential time weight ings Fast Slow Impulse one linear averaging detector and one peak detector Octave band Filters 12 or 1 3 octave band fil ters 36 Pre weighted either A C or L each with a detector channel containing one linear av eraging detector and one exponential averaging detector switchable between Fast or Slow Octave Time Constant At low centre frequencies that is below 63 Hz the B x T product for 1 1 octave bands
109. ftware BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements RS 232 Start Stop Command I t t t t t t gt Time s Event 970424e Fig 3 20 Example command sequence for a remote trigger i set up Event Trig Setup Trigger Sot tke Menu Start Stop Post Trig Fig 3 21 Soft key trigger set up screen appears during background measurements and when pressed starts an event at the beginning of the next second The lt Stop Event gt soft key appears during event recording and when pressed stops the event at the end of the current second BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 59 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Start Pre Trig can have a value between 0s and 15s Stop Post Trig can have a value between Os and 15s Fig 3 22 shows an event triggered by the soft key Softkey Pressed Released gt Time s Event 970425e Fig 3 22 Example time sequence for a soft key trigger Level Trigger The level trigger is activated when Larynst exceeds the Level value set in the Start field for more than the set Duration The event stops when Lafytnst falls below the Level value set in the Stop field for more than the set Duration Pre and post tri
110. ge is automatically centred around the cur rently displayed level in the quasi analogue bar To re enter a zoomed range around a changed current level zoom out and in again 5 4 2 Recalled Measurements For a recalled measurement see section 6 3 there are extra menu pages available with sound level meter parameters The soft keys with the same names as those described in section 5 4 1 have also the same functions In addition there are the following lt Current Meas gt to return to displaying the current measurement lt File gt to A increment or Y decrement the File thereby recalling a new data file lt Meas No gt to A increment or Y decrement the measurement number in a recalled measurement se quence or logged measurement lt Event No gt to A increment or Y decrement event measurements BZ 7206 only lt Sample No gt to A increment or W decrement the event sample number in a recalled event BZ 7206 only BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 123 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Cumulative Distribution 5 5 Viewing a Cumulative Distribution 5 5 1 Current Measurements With Fig 5 1 on display press the lt Cumulative Distribu tion gt soft key to display the cumulative distribution curve The example in Fig 5 4 shows the cumulative distribution of a fluctuating broadband noise level ij Mes Cum
111. gger are available LAp Inst is sampled 10 times per second Start Pre Trig can have a value between 0s and 15s Level can be set at 1dB intervals and must be greater than or equal to the Stop Level Duration can be set from 0 to 15s in 1s steps The sum of Pre trig and Start Duration can not exceed 15s 60 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Trigger Start Pre Trig Levelt Duration Stop Post Trig Lenel Duration Fig 3 23 Level trigger set up screen Level Start duration Start Level Stop duration Stop Level gt Time s SN y Event 970426e Fig 3 24 Example time sequence for a level trigger Stop Post Trig can have a value between Os and 15s Level can be set at 1dB intervals and must be less than or equal to the Start Level BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 61 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements 3 5 10 Duration can be set from 0 to 15s in 1s steps The maximum sum of Post Trig and Stop Duration is 15s Fig 3 24 shows an event triggered by a level change Setting Up the Measurement Path TH set up Meas Fath SDATASMEARS 1 o001 351A8 oo02z 351A oo003 510 oo004
112. hted 27 dB 150dB C weighted 29dB 150 dB Lin 5Hz 20kHz 35dB 150dB Lin 8Hz 20kHz 40 dB 150dB 166 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ7210 BZ 7219 and BZ 7206 Specifications Primary Indicator Range For the individual level ranges when using Microphone Type 4189 of nominal sensitivity Primary Indicator Range Lower limit Range dB VPR l A weighted C weighted Lin 5Hz 20 kHz Lin 3 Hz 20 kHz dB dB dB dB 130 113 50 50 50 50 120 103 40 40 40 43 110 93 30 32 38 43 100 83 30 32 38 43 90 73 30 32 38 43 80 63 30 32 38 43 For the individual level ranges when using Microphone Type 4189 of nominal sensitivity and attenuator ZF 0023 Primary Indicator Range Lower limit Range dB Upper limit dB PE EEEE eewaq d m r jin r 150 133 70 70 70 70 140 123 60 60 60 63 130 113 50 50 57 63 120 103 47 50 57 63 110 93 47 50 57 63 100 83 47 50 57 63 Indicator Range The lower limits of the indicator ranges are equiv alent to the lower limits of the Primary Indicator The upper limits of the indicator ranges are equiv Ranges alent to level ranges BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 167 Enhanced Sound Analysis Software BZ 7206 User Manua
113. if X C e Lamm LAeg Can be used as a measure of impulsive content Replaced 15 times per second when displayed graphically 16 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software What is Measured and Recorded LxYTm3 Average 3 second Taktmaximal value for the duration of the measurement as defined by TA L rm and VD12058 Lxyrms Average 5 second Taktmaximal value for the duration of the measurement as defined by TA L rm and VD12058 Lyy Max a I Max Lxy value detected within the elapsed time L i User defined percentile level where the value of LxYN1 is exceeded for N1 of the elapsed time L i User defined percentile level where the value of LxYN2 is exceeded for N2 of the elapsed time Lyyn3 I User defined percentile level where the value of LXYN3 is exceeded for N3 of the elapsed time Lyxyna User defined percentile level where the value of Lxyn4 is exceeded for N4 of the elapsed time Lyyns User defined percentile level where the value of LXYN5 is exceeded for N5 of the elapsed time Lxy Min Min Lxy value detected within the elapsed time Larpd Daily A weighted Personal Noise Exposure Level as de fined by EEC 88 186 see Fig 2 2 This is the 8 hour noise dose of a constant A weighted sound level which lasts for a period of time T but is measured only over a time T BB10
114. ifferent types of application software can be mixed Back Erase Data from the immediately previous 1 to 15s can be erased from the measurement All processed data Leg LN etc are then corrected accordingly not available during logging Markers One data exclusion marker and four user defina ble markers for on line annotation of sound cate gories heard during the measurement logging only Markers can be edited while measuring up to 60s after the sound is heard BZ 7206 only Control Of Sound Recording Sound recording wav files on a PC using 7815 7820 or 7825 can be controlled from 2260 via RS 232 interface and Aux output connected to the sound card on the PC Markers and Events BZ7206 only can be used to control recording on the PC Measurement Displays The measurements can be displayed in six differ ent ways Sound Level Meter One main and five secondary parameters can be specified by the user plus one analogue bar which can be zoomed Cumulative Distribution For one of the octave BZ7206 only or 3 octave BZ 7206 only bands or broadbands plus one analogue bar Level Distribution For one of the octave BZ 7206 only or 3 octave BZ 7206 only bands or broadbands Class width can be specified Y axis can be zoomed Also with analogue bar Profile The last 15s of LAF Ins plus one analogue bar or the last 60 s with markers for logging meas urements Spectrum Octave or 3 octave band spectrum p
115. ig 8 9 and Fig 8 10 show the curves for octave band filters 1 3 Octave Band Centre Frequencies Nominal 6 3Hz 8Hz 10Hz 12 5Hz 16Hz 20 Hz 25 Hz 31 5 Hz 40 Hz 50 Hz 63 Hz 80 Hz 100Hz 125Hz 160 Hz 200 Hz 250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz 1 k Hz 1 25 k Hz 1 6kHz 2kHz 2 5kHz 3 15kHz 4kHz 5kHz 6 3kHz 8kHz 10kHz 12 5kHz 16kHz 20 kHz Exact 6 20Hz 7 81Hz 9 84Hz 12 40Hz 15 63 Hz 19 69 Hz 24 80 Hz 31 25 Hz 39 37 Hz 49 61 Hz 62 50 Hz 78 75 Hz 99 21 Hz 125 Hz 157 49Hz 198 43Hz 250Hz 314 98Hz 396 85 Hz 500 Hz 629 96 Hz 793 70 Hz 1k Hz 1 2599kHz 1 5874kHz 2kHz 2 5198kHz 3 1748kHz 4kHz 5 0397kHz 6 3496kHz 8kHz 10 079 k Hz 12 699 k Hz 16 kHz 20 179 kHz Real time Frequency Range 6 3Hz to 20kHz centre frequencies Fig 8 11 and Fig 8 12 show the curves for 3 octave band filters Analytical Filter Design Optimised Z transfor mation of analogue Butterworth filters Octave based down sampling from 48 kHz Reference Attenuation 0dB Linear Operating Range For the individual level ranges measured through AC Input Range di ne ile dB dB 1 1 octave 1 3 octave dB dB 130 130 50 50 40 30 22 22 80 80 26 22 These filters do not fulfil the requirements of paragraph 7 2 3 inthe ANSI S1 11 1986 standards The paragraph states at which frequency the anti alias filter cut off should be set For sound level measurement as per
116. ing up the Output aaa 76 Introduction i a aQ S aq w aW auqa awas 76 Setting up AUX 1 and AUX 2 Outputs 76 Range of Settings for AUX 1 and AUX 2 Outputs 76 Setting up the Level Recorder 80 22 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Introduction 3 1 Introduction This chapter explains how to prepare the analyzer for making measurements that is how to Mount the microphone and the input stage Connect a microphone extension cable Set up measurement parameters Set up measurement control parameters Set up the sound level meter display Set up the analogue inputs and outputs 3 2 Mounting the Microphone Before mounting the microphone note the following precau tions e When screwing on the microphone input stage protec tion grid and extension cables do it gently to avoid damaging the threads e Keep dust and foreign matter off the microphone dia phragm Do not touch the diaphragm with anything it is very delicate Mounting the Microphone and Input Stage The microphone normally used with this software is the Pre polarized Free field 1 2 Microphone Type 4189 and requires no external polarization voltage Ensure that the polarization voltage of the analyzer is set to 0V see section
117. ions are only available on the 2260 In vestigator running BZ7206 This is pointed out in each case Note that a 2260 Observer can be factory upgraded to a 2260 Investigator thus providing access to this instrument s full range of advanced applica tions such as building acous tics one and two channel sound intensity and FFT analysis The Analyzer The analyzer right comprises the following e Modular Precision Sound Analyzer Type 2260 In vestigator platform with Sound Analysis Soft ware BZ 7210 or Modular Precision Sound Analyzer Type 2260 Ob mila Briel amp Kj r 950808e server platform with Sound Analysis Software BZ 7219 e Enhanced Sound Analysis Software BZ7206 for 2260 Investigator only e Input Stage ZC 0026 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 1 Introduction Welcome The e Microphone Type 4189 With this combination you ll have a powerful instrument in dispensable for making serious measurements and analyses of noise This particular combination of software and platform is aimed at markets primarily concerned with environmental require ments Experienced users and beginners alike will appreciate this powerful hand held instrument both in the field and back in the laboratory You ll be in possession of easy to use facilities for handling results and viewing data bo
118. is Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Input Microphone or AC Pol S I Voltage Fixes the polarization voltage required for the microphone can be set to e ov for a prepolarized microphone for example Type 4189 which is normally used with this software OR e 200V for any other Briiel amp Kj r 1 2 microphone requir ing an external polarization of 200 V Note Allow at least 30s after changing the polarization volt age before making any measurements If you inadvertently select a polarization of 200 V for a Type 4189 microphone its sensitivity will fall significantly to make calibration see section 4 4 impossible No damage will be done to the microphone just correct the fault by selecting a polarization of 0 V Corr Fixes the Sound Incidence Correction can be set to either Frontal Random Generally ISO requires Frontal and ANSI requires Random Check your local standards for the setting you require Windscreen Correction For outdoor measurements it is often necessary to mount a windscreen on the microphone to damp the influence of the wind This has however a small impact on the overall fre quency response of the analyzer To compensate for this use the windscreen correction setting in the Set up Input e Choose None if the microphone is without windscreen e Choose P
119. l Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications Linearity Range In accordance with IEC 60804 the Linearity Ranges are the differences between the upper limit and the lower limit in the following tables For the individua level ranges when using Microphone Type 4189 of nominal sensitivity Linearity Range Lower limit Range dB Upper limit dB Z wa ha as awas qas Anno inoue 130 129 50 50 50 50 120 119 40 40 40 40 110 109 30 30 35 40 100 99 27 29 35 40 90 89 27 29 35 40 80 79 27 29 35 40 For the individua ZF 0023 level ranges when using Microphone Type 4189 of nominal sensitivity and attenuator Linearity Range Lower limit Range dB Upper limit dB ated waei An r jin ote 150 149 70 70 70 70 140 139 60 60 60 60 130 129 50 50 54 60 120 119 44 47 54 60 110 109 44 47 54 60 100 99 44 47 54 60 168 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ7210 BZ 7219 and BZ 7206 Specifications Pulse Range In accordance with IEC 60804 The upper limits of the pulse ranges are equivalent to the upper limits of the Linearity Ranges plus 3dB The lower limits of the pulse ranges are equivalent to the lower limits of the Linearity Ranges The pulse ranges are the differences between th
120. l Chapter 3 Setting Up the Analyzer Setting up the Output 3 7 3 7 1 3 7 2 3 7 3 With Fig 3 34 on display search forward backward for the next previous event using the lt Event No A gt and lt Event No Y gt soft keys to recall the first sample in the next event or the last sample in the previous event BZ 7206 only With Fig 3 34 on display increment decrement the sample number using the lt Sample No A gt and lt Sample No Y gt soft keys to recall the next or previous sample within the current event BZ 7206 only Setting up the Output Introduction The two auxiliary output sockets Aux 1 and Aux 2 shown as 21 and 22 on inside rear cover can be set up independently to deliver one of several different outputs Some outputs are common to both sockets and others are socket dependent These outputs are for tracing a measured level on a level recorder setting up a level recorder triggering external equip ment such as tape and level recorders and for aural moni toring using earphones Setting up AUX 1 and AUX 2 Outputs Start by pressing the set up hard key symbolised by and get the Set up Output menu Fig 3 35 on display Range of Settings for AUX 1 and AUX 2 Outputs Fig 3 35 itemises the output parameters whose settings or values can be changed as described in section 3 3 2 The following describes what they are and how they affect the delivered output 76 Sound Analy
121. lay press the lt Spectrum gt soft key to display a spectrum Fig 5 15 shows an example of the current octave band spectrum Fig 5 16 shows an example of the cur rent 1 octave band spectrum To see the full display press the lt hard key for example see Fig 5 17 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 137 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Spectrum Levels ij Mess Spectrum IkHz S7 02dB acc paoi ma Fig 5 15 Spectrum measurement showing the current octave band spectrum lEJjHz odebFcInst 3 57 3208 ac Fig 5 16 Spectrum measurement showing the current 1 5 octave band spectrum from 12 5 Hz to 20 kHz 138 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Spectrum Levels HIj Meaz Spectrum 250H2 LLFe Inst 3 70 1406 Fig 5 17 1 5 octave spectrum from 6 3 Hz to 20kHz Spectrum measurements are made and displayed in real time For octave band measurements there are 11 or 12 contiguous filters with centre frequencies starting at 16 Hz or 8 Hz and ending at 16kHz lower centre frequency depends on the Spectrum Bandwidth setting See section 3 3 3 For 1 3 octave band measurements there are 33 or 36 con tiguous filters with centre frequencies starting at 12 5 Hz or 6 3 Hz and ending
122. libration level to the one given on the calibration chart for the cali brator used 4 4 2 Calibrating the Analyzer Sound Level Calibrator Type 4231 provides a nominal pres sure field calibration signal of 94 or 114dB at 1kHz The nominal random incidence or diffuse field calibration signal is also 94 or 114dB but the nominal free field calibration signal is 93 9 or 113 9dB when used with the Type 4189 microphone BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 93 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration Pistonphone Type 4228 provides a nominal calibration signal which is 124dB Since it operates at 250 Hz there is no difference in calibration level for free or random incidence fields Multifunction Acoustic Calibrator Type 4226 provides a nom inal calibration signal of 94 104 or 114dB at a range of frequencies For day to day calibration you need only to calibrate at one level and one frequency In order to comply with most stand ards calibrate the analyzer with a reference signal of 94dB at 1kHz aaj Calibrate External Calibration Level JE re 20uPFa Cale Microphone Sensitivity 26 2 dB re 1Y Fa Calibration Date Last 1995 Sep l Initial 1995 Jan 31 Fig 4 7 External Calibrate menu Procedure for External Calibration Microphone Input with registered serial number and Initial Calibration Important make sure that the proper microphon
123. lus two broadband bars plus one peak bar Y axis can be zoomed and display window moved up and down The four graphical displays have cursor read out facilities Automatic CIC Viewed during or after the meas urement BZ 7206 and BZ 7210 only 172 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ7210 BZ 7219 and BZ 7206 Specifications Statistics Cumulative Distribution Curves displayed with 0 2dB class interval Level Distribution Curves displayed with a user defined class interval of 1 2 5 10 or 20dB Modes The four main modes are System Platform only used to set the internal clock copy files etc Set up Used to set up measurement and control parameters Calibrate Used when calibrating the analyzer Measurement Used to view current and recalled measurements GPS Data A position can be attached to a measurement by inputting data from a GPS Global Positioning Sys tem receiver via the Serial Interface Receiver Standards Supported NMEA 0183 ver 2 20 optional corrected to Differential GPS using RTCM 104 ver 2 1 Baud Rate 4800 Storage System Internal disk for storing application software user defined set ups and measurement data Set ups and data can be recalled for further analysis External Memory Card For store recall of meas urement data and transfer of data to and from a PC SRAM
124. measurement run this decides how all subsequent measurement runs will start Can be set to Reset and Start Pause or Continue BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 41 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Reset and Start After each measurement run the next measurement is automatically initiated immediately via Reset and Start In this way a series of measurements each with a duration of the Preset Time is performed See Fig 3 8 upper diagram When storage takes place each consecu tive measurement is stored under its own consecutive measurement number within the storage file For ex ample see Fig 3 32 which shows file number 26 and measurement number 3 as 0026 S3C 0003 Pause After each measurement run the measurement goes into pause The next measurement is initiated when the hard key is pressed see Fig 3 8 middle diagram In this way a series of measurements each initiated by the hard key except the first measurement and with a du ration of the Preset Time is performed No data are stored during the pauses between measurements When data are stored each measurement is stored under its own consecutive measurement number within the storage file For example see Fig 3 32 which shows file number 26 and measurement number 3 as 0026 83C 0003 Continue useful autosave function
125. mendment 2 2000 10 Type 1 IEC 60804 2000 10 Type 1 IEC 61672 1 Draft 2001 03 Class 1 IEC 61260 1995 07 Octave Bands and 1 3 o0c tave Bands plus Amendment 1 2001 09 Class 0 ANSI S1 4 1983 R 1997 plus ANSI S1 4A 1985 Amendment Type 1 ANSI S 1 43 1997 Type 1 ANSI S1 11 1986 R 1993 Octave Bands and 1 3 octave Bands Order 3 Type 0 C Optional Range DIN 45657 1997 07 The effect of the analyzer s casing on the frequen cy response is shown in Fig 8 1 The frequency and directional responses of the analyzer are shown in Figs 8 2 8 3 and 8 4 Microphone Prepolarized Free field Vy Microphone Type 4189 Type Prepolarized condenser Nominal sensitivity 26dB 1 5dB re 1V Pa Capacitance 14 pF at 250 Hz Input Stage ZC 0026 Input Impedance 10 GQ lt 1 pF Extension Cables Up to 100m in length can be Not supplied with software but included with the Modular Precision Sound Level Analyzer Type 2260 added between the input stage and the Type 2260 without affecting measurements Measuring Range Total Range At 1 kHz the difference between the nominal upper boundary level with attenuator ZF 0023 on the least sensitive level range and the lowest sound pressure level measurable with out attenuator ZF 0023 on the most sensitive level range with a noise margin of 7 dB Inherent noise is the combination of the electrical noise and the thermal noise from the microphone at 20 C A weig
126. ments and the CIC results Fig 5 1 itemises what is available for current measurements these are e Sound Level Meter for discrete parameters e Cumulative Distribution for percentile levels e Level Distribution for statistical level distribution Profile for displaying levels over the last 15s or 60s and for setting markers on logged data BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 119 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Results e Spectrum for octave band or 1 s octave band levels e List of Automatic CIC results BZ 7210 and BZ 7206 only 5 1 3 Scope for Viewing Recalled Measurements Sound Level OO02 51A 0001 Meter 40 LAFCInst 3 0 Spectrum Fig 5 2 Measurement Display menu itemising vari ous ways of viewing recalled measurements as well as their set ups Fig 5 2 itemises what is available for recalled measurements see section 6 3 these are Sound Level Meter for discrete parameters Cumulative Distribution for percentile levels Level Distribution for distribution levels Recalled Set up for the set up of a recalled measurement Spectrum for octave band or 1 s octave band levels Automatic CIC BZ 7210 and BZ 7206 only 120 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results The Measurement Mode 5 2 5 3
127. meters 5 4 Viewing Sound Level Meter Parameters 5 4 1 Current Measurements With Fig 5 1 on display press the lt Sound Level Meter gt soft key to display Fig 5 3 Use the soft keys as follows lt Display Menu gt to return to Fig 5 1 Fig 5 2 for a re called measurement Fig 5 8 The measurement menu in the sound level meter mode lt Back Erase gt for removing bad data available only in Manual and Meas Sequence Automatic function when the analyzer is paused see section 4 8 lt Main Param gt to step through the previously defined set of main parameters see section 3 6 3 and select one lt Freq Weight gt to toggle between the A or L C weight ed main parameter The choice of L or C is determined by the set up described in section 3 3 2 and Table 3 2 122 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Sound Level Meter Parameters This soft key is avaiable only when relevant to the se lected main parameter lt Time Weight gt to step through the F ast S low or I mpulse weighted main parameter and select one This soft key is available only when relevant to the se lected main parameter lt Edit Display gt to create different looks lt Zoom Bar gt for switching between a zoomed and un zoomed quasi analogue bar When switched to zoomed the zoom ran
128. n by new data measured with the recalled the set up You will be warned by a pop up display which requires either confirmation press the lt OK gt soft key or cancellation press the lt Cancel gt soft key of the intended set up change There are two exceptions when no warning is given and parameter changes take place immediately these are e When the data so far measured have been stored see section 6 2 e When the measurements have been running for less than one minute How to Recall a Set up 1 Make sure the analyzer is in the set up mode if necessary press the hard key This tells the analyzer that recall concerns set up data 2 Press the 4 hard key to get the display shown in Fig 6 7 which is the menu for recalling set up files 3 Usethe a and Y hard keys to select highlight the file of your choice 156 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Recalling Set up Data i set up Recall Internal Disk SET UP SB2 7201 O1 35TF SAAB MOUNTING j2 STF SAAB INDUSTRIES Fla STF ORGAN FIPES 1 STF SOBORG AT DAWA 11l STP SOBORG BY MIGHT nn JK 12 STP S0B0RG AUTOM 13 5TP GENTOFTE TRAFF 26 STF Mi SET UP Cancel Fig 6 7 Recall menu for recalling a selected high lighted set up file 4 When you are satisfied press the lt OK gt soft key and the analyzer
129. nge drive Charge Injection Calibration Charge Injection Calibration check OIO a Ripi automatic check fault diagnosis manual check theory viewing results Concurrent measurements 10 Control J ocal a PRUE nna EEEE remote Control parameters savccsecssmewevsidecsisceceessereess 36 block diagram range of settings selecting setting up set up menu Create directory Cumulative distribution current measurement 124 recalled measurement 125 D Datta fille uu us 164 Data output printer Data storage Deleting bad data 113 Detectors 1 3 octave bands C weighted 170 L weighted 170 octave bands 170 peak Diffuse field Digital Audio Input Digital Audio Output Dimensions Directory Discrete parameters during measurement instantaneous values with octave band data 18 E Effects of accessories of magnetic fields of temperature of vibration Elapsed time Event Logging function Export data bid Extension cable AO 0441 AO 0442 effect on calibration use with input stage External device 14 External Power 194 External Trigger 55 F
130. nhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu aij Meas sSLM Display Menu Back Erase SO LAF CInst 3 Fo Main Param Freq Weight Elapsed Time Fig 3 27 The first menu page of the SLM display The quasi analogue display bar is shown in the sound level meter display only during current measurements It can be made to represent one of the following measurement param eters Lxpk Peak Lyy Inst where X and Y are respectively the selected frequency and time weightings The display range can be toggled between an unzoomed and zoomed range via the lt Zoom Bar gt soft key When unzoomed the display range is fixed by the setting of Range shown in Fig 3 3 When zoomed the display range is set to cover a smaller section of this range The size of this section can be set by the lt Edit Display gt soft key see below and the position of the section is automatically adjusted to accommo date the currently displayed level see section 5 4 1 each time the bar is zoomed 66 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu Procedure 1 With Fig 3 27 on display ensure via the A and Y hard keys that the item Edit Display appears in the menu column then pr
131. nteger value from 1 to 99 Use this entry to specify the set up of your choice see section 6 4 2 The selected set up specifies how the measurement routine is to be used each time the analyzer is switched on automatically To store measurement results automatically ensure that Func is not set to Manual If Func is set to Meas Se quence or Automatic then Action after Meas should be set to Store For the selected set up see Fig 3 5 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 109 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Timers and Automatic Measurements Only set ups stored on the disk can be specified To use the current set up of the analyzer you must first make sure it has been stored on the disk see section 6 4 2 Name Descriptive name which accompanies the selected Set up No see section 6 4 2 Meas Time The duration of the measurement routine which is performed each time the analyzer is switched on automatically and is determined by the selected set up see section 3 5 3 When the selected set up specifies that a CIC check is to be done before and after the measurement the total measure ment time will be extended by approximately 30 seconds First Start Date and time of starting a measurement for the first time The field entries for year month day hour minute and sec ond are user selectable You can enter up to one month ahead When the select
132. o 60 even if more is marked 5 8 3 Connecting to a PC Sound is recorded on a PC using the sound card in the PC Connect the signal for Aux 1 or Aux 2 on Type 2260 to the audio input on the PC using Cable AO 0586 In Set up Output select Input C L for Aux 1 or Input A for Aux 2 depending on whether you want C L or A weighting of the signal C weighting or linear depends on the Freq Weight for broadband measurements in Set up Meas Param To control the PC connect Serial Interface Cable AO 1442 between the serial interface port on Type 2260 and the COM port that you want to use on the PC 1 Start Noise Explorer Evaluator or Protector on the PC BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 135 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing the Set up of a Recalled Measurement 5 9 2 Select Tools Sound Recording 3 Select 2260 as the Sound Level Meter 4 Press Set up to select Line in and Recording Quality 5 Adjust the signal level if necessary 6 Press OK 7 Select the recording path if necessary 8 Press Start The PC software is now ready to record when signalled from the 2260 The Pause and Measuring icons in the upper left hand corner of the 2260 display change to Pause and Measuring icons with a recorder symbol as long as Type 2260 controls the recording Type 2260 returns to normal mode when the recording session is stoppe
133. ock e 1 2 3 4 5 6 10 12 15 20 or 30 seconds minutes e 1 2 3 4 6 8 12 or 24 hours The start of the first logging period coincides with the start of the measurement At the specified hour minute second the second logging period starts Subsequent periods will keep in convenient synchronisation with the internal clock See Fig 3 12 for more details Store BB after each sample Can be set to one of the following e All Each time the sample has run its course all broadband measurement data will be stored on a previously defined measurement path see section 3 5 10 w o Stat As with A11 but excludes all broadband statistical data e Major Par Laeq LC LpkMaxP Larmax LAFMin Loeq Lat Frequency weighting C L depends on set up see section 3 3 3 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 49 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Nothing No data storage takes place Store Spec after each sample Can be set to one of the following e All Each time the sample has run its course all spectrum measurement data will be stored on a previously defined measurement path see section 3 5 10 w o Stat As with A11 but excludes only statistical data on 1 octave bands or 1 s octave bands eq Stores only L spectra Frequency weighting depends on set up see section 3 3 3
134. of either N or Te respectively 4 When you have made your choice press the lt OK gt soft key to confirm this and to revert to the previous display with the measurement parameter installed in the chosen field 5 Repeat steps 2 to 4 for all five fields to display the meas urement parameters of your choice If you require empty fields to unclutter the display scroll all the way down in step 3 and select Nothing which is towards the bottom of the list of measurement parameters 3 64 The Display for Recalled Data When the display shows data that have been recalled see section 6 3 the file number is shown on the display When a recalled measurement sequence or logging measurement is BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 71 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Sound Level Meter Menu Measurement Parameter 1 Elapsed Time see section 3 5 3 2 x Peaks gt preset level see section 3 3 3 3 Lxpk MaxP 4 Lxpk Peak 5 Lyy SPL Lyy Inst 7 LxYT3 8 LxYT5 9 Lae ASEL 10 Lxeq 11 LxIm 12 Lxeq _ L Aeq 13 Laim Laeq 14 LxYTm3 15 LxyTm5 16 Lxy Max 17 LxYN1 18 LxYN2 19 LxYN3 20 LxYN4 Table 3 4 Complete list of measurement parameters Note X and Y denote frequency and time weightings respectively 72 Sound Analysis Software BZ 7210 BZ 7219 and Bri
135. onfirm your choice press the lt OK gt soft key There are two possible outcomes to this if the elapsed time of a measurement has exceeded one minute 1 You will be warned that all data up to now will be lost and the analyzer will automatically reset and if a meas urement is in progress restart the measurement with the new range setting If you accept this press the lt OK gt soft key OR BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 85 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration Practice and Theory 4 3 4 3 1 4 3 2 2 You can press the lt Cancel gt soft key and nothing will happen If the elapsed time is under one minute no warnings will appear and range changing with automatic reset restart will occur without user dialogue If however you want to store the data of whatever has so far been measured before changing the range setting pause the analyzer via the hard key and store the data via the hard key see section 6 2 After this change the range setting and allow the measurement to restart as de scribed in 1 above Calibration Practice and Theory Introduction A calibration can be made only while the analyzer is in pause that is whenever the pause symbol Hl appears in the top left hand side of the screen in the status line If necessary use the hard key to ensure this Remember to calibrate before and not during a measuremen
136. only If Trigger is set to Soft Key then Start MARKER 5 changes to Start Event and Stop Event when started BZ 7206 only For Logging and Event Logging markers and triggers are given unique numbers When a measurement stops the markers are no longer visible but they are stored with the data and can be seen if the data is viewed using Noise Ex plorer Type 7815 Evaluator Type 7820 or Protector Type 7825 Each of Markers 2 to 5 can be given a name by highlighting the name in Set up Markers see Fig 5 13 and selecting Edit Name So you can easily relate the type of marker to the type of event marked Marker 1 is always set to Ex CLUDE It is possible to set a pre marker with a value of up to 5 seconds When you mark an event you will then see the marker start that number of seconds earlier 132 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Control of Sound Recording on a PC Editing Markers When you have created a marker you can move or resize it at any time within the 60s that is on the screen BZ 7206 only or delete it 1 When one or more markers is displayed press 4 This moves the cursor to the last activated marker 2 Use 4 and gt until the marker that you want to edit is selected 3 The menu on the right hand side of the display changes to allow you to move the start or end point of the selecte
137. or ATA flash cards MS DOS Compatible file system from ver 3 3 Serial Printer Output Set ups and measurement data can be printed on an IBM Proprinter or compatible or a Graphics Printer Type 2318 or Portable Printer Type 2322 The formats can be screen dumps or tables Measurement data can be output in spreadsheet format or as a binary file for post processing on a PC Remote Local Remote control of set ups and measurements as well as transfer of measurement data in binary form to a PC for use with Briel amp Kj r application soft ware Baud Rates 1200 2400 4800 9600 19200 38400 and 115200 Help Concise context sensitive help for keys and menus Languages All software available in English German French Italian Spanish and Czech Display Update Rates Discrete parameters Every second Analogue bars 15 times per second Spectra 1 or 15 times per second depending on selected parameter Auxiliary Outputs Can be set to LAF Inst 0 to 4V DC signal updated every 100 ms Reference 4 V square wave for output calibration Meas Status For triggering external devices dur ing measurements including SONY TCD D7 D8 and TCD D100 DAT Input Frequency weighted analogue signal with adjustable gain for aural monitoring or tape recording Aux 1 is C or L weighted and Aux 2 is A weighted Event As Input but only during events BZ 7206 only Event Status As Meas Status but only
138. ound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications Relative 5 Response dB a Lin 10 C 15 20 25 30 1 10 100 1000 10000 100000 Frequency Hz 950011e Fig 8 7 Curves for the A and C weightings as well as the Lin response These curves do not include the response of the microphone Response 0 dB 5 10 15 20 25 m Nom Level diff l 30 o Meas Level diff l e Nom Level diff F F Meas Level diff F 35 Nom Level diff S q Meas Level diff S 40 0 1 0 2 05 1 2 5 10 20 50 100 200 500 1000 Duration ms 941895 1e Fig 8 8 Curves showing the detector response of the analyzer to 4kHz tone bursts of various duration BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 177 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications Response 20 dB 20 40 60
139. parameter is given in section 3 3 3 4 Press the lt Save gt soft key to confirm your choice this will also cause the lt Save gt and lt Undo gt soft keys to dis appear 26 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting Up the Measurement Parameters i set up Meas Param Range 30 6 110 6 dB Bandwidth 1 3 oct Peaks Overs 140 dB Time Height Broad band Stat Spectrum Meas Freq Height Broad band Mess Broad band stat Spectrum Meas Fig 3 38 The Set up Measurement Parameters menu for selecting settings and values for the measurement parameters If you wish to undo any one of these press the lt Undo gt soft key and all settings values will revert to what they were the last time the lt Save gt soft key was pressed 5 Repeat steps 2 3 and 4 until you are satisfied with the setting or value of each parameter 3 3 3 Range of Settings for Measurement Parameters Fig 3 3 itemises the measurement parameters whose settings or values can be changed as described in section 3 3 2 The following describes what they are and how they affect meas urements Note Changing any of these set up measurement parameters during a measurement will automatically reset and restart the analyzer This means that data so far measured will be deleted and overwritten by new data measured with the changed p
140. ppear in the top left hand side of the screen in the status line If you want to continue with the same measurement press the hard key again Measuring According to Standards IEC Standards If you want to measure according to IEC standards i e free field make sure that the S I Corr is set to Frontal see 106 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Timers and Automatic Measurements section 3 3 3 Simply point the analyzer towards the sound source ANSI Standards If you want to measure according to ANSI standards i e diffuse field make sure that the S I Corr is set to Random see section 3 3 3 If the sound field is diffuse or the sound arrives from random directions the direction of the analyzer is unimportant If however the sound field is free measure with the analyzer at an angle of between 70 and 80 to the sound source 4 7 Timers and Automatic Measurements 4 7 1 Introduction Automatic control of the analyzer is available via one or more of the software s nine timers The purpose of a timer is to initiate measurements in the absence of an operator Basi cally a timer will e Switch on the analyzer at a preset time and date Install a preselected set up Initiate a measurement routine as specified in the set up Switch the analyzer off Repeat the above at preset intervals and at a
141. preset number of times For a timer to work the analyzer must be in the switched off state unless already switched on by a previous timer A timer will never interrupt the analyzer if it is already in use manually If a switch on time is during the time of any manual use of the analyzer the timer opportunity is lost BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 107 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Timers and Automatic Measurements 4 7 2 If the wake up time is during the time of another timer initiated measurement action will be taken immediately after this measurement is completed You can control the analyzer during a timer initiated meas urement as long as this does not affect the measurements If you try to change any parameters affecting the measurement you will be warned of this If you persist the analyzer will revert to manual control and timer control cannot be re sumed During any timer initiated measurement the timer symbol replaces either k or M in the status line at the top of the display Setting Up a Timer Procedure 1 Start by pressing repeatedly if necessary the set up I hard key symbolised by until Fig 4 17 appears M et up Timers Timer no 1 Set up no i 16 Mame GREEN LANE Mess Time OO8025 30 First Start and Stop 1995 Jan 27 15 00 00 1995 Jan 27 15 02 30 No of Starts oF Start Every 02 30 00
142. ption Operational modes list Output range of settings AG E E E selecting AC 2 setting up ASCII BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 185 Enhanced Sound Analysis Software BZ 7206 User Manual Index Aux 1 Aux 2 Auxiliary 1 Auxiliary 2 Digital Audio screen dump to data file to PG s to printer 161 to spread sheet 164 Overload P Parameters Path Peaks counted Pistonphone Type 4228 use with Polarization Preset time hard key range setting Print data Printer Profile Q Quasi analogue display R Range Key a a a aa u usss 194 Ranges indicator linear operating primary indicator Recall measurement data IAN AEE E 156 Recalled data sound level meter display Reference conditions Remote Trigger octave band statistics 169 Results ways of viewing a a 119 S Deren GUM eie eiia 162 Secondary parameter display change 70 Sensitivity analyzer microphone 97 Serial data output 173 Serial interface 14 194 Service after sales support Setting up measurement parameters 26 Set up key recall 156 BEOUS EE EE EAE EEE ners 152 Set up mode
143. put source On the Set up screen for Automatic CIC there are two options for selecting automatic CIC checks to be performed in con nection with a Logging or Event Logging measurement Choosing this set up displays a screen similar to Fig 4 16 1 Set Before and After to On BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 103 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration When the Logging or Event Logging measurement starts and ends an automatic CIC check is done aay set up Automat CIC Automatic CIC during Logging Before and After Or Daily CIC m i W First Check O3 00500 Second Check 09 00 00 Third Check 15 00 00 Fourth Check 21500500 Fig 4 16 Automatic CIC calibrate menu 2 Set Daily CIC to None Once Twice Three Times or Four Times You specify how often the automatic CIC is to be done Choices range from 1 to 4 times each day Set First Check Second Check Third Check and Fourth Check depending on the number of daily CIC checks specified above Automatic CIC checks are done on a daily basis during a Logging or Event Logging measurement at the specified times according to the values set in the relevant check fields Au tomatic CIC checks are always delayed until the end of the current sample If a CIC check is scheduled to take place when an event is happening the CIC is delayed until the next appropriate time If a collision with an
144. r lt Meas Par gt to step and select a measurement param eter which applies to the spectrum and two broadbands shown together The example shown in Fig 5 17 is Lyp Inst The full list of available measurement pa rameters is Lzy SPL Lxy Inst L xeq L xy Max Lyyn1 to Lyyys BZ7206 only L XY Min Where X and Y are frequency and time weightings re spectively If Lyyyy to Lyyys is selected only one broad band column is displayed where there were two together and with the frequency and time weightings fixed as described in sec tion 3 3 2 and Table 3 2 lt Zoom In gt to adjust the display stepwise to show details around the top 40 20 10 or 5dB of the spectrum 140 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing Spectrum Levels lt Zoom Out gt to return stepwise to the full measurement range 80 dB lt Y Axis gt to move the display window A upor Y down the zoomed Y axis to show details of the un dis played levels of the spectrum 5 10 2 Recalled Measurements For a recalled measurement see section 6 3 there are extra menu pages available with spectral data See the example in Fig 5 18 The soft keys with the same names as those de ij Mess Spectrum S0H 72 10JE ace Fig 5 18 Recalled 1 3 octave band measurements showing the un zoomed graph s
145. r 5 Viewing Results Viewing CIC Results BZ 7210 and BZ 7206 only If no reference CIC is available the measured CIC ratio is shown directly and the column heading becomes Ratio in stead of Diff An asterisk behind the CIC value denotes that the back ground level is too high and has probably affected the CIC value If a CIC check has been skipped three dashes are displayed instead of the missing CIC value A CIC check is skipped when it is postponed until the subsequent CIC check by an event or by a logging rate that is longer than the time span between the two CIC checks The two remaining columns display the time and date for each CIC check If there are more than 9 entries in the displayed CIC log use A or Y to scroll up and down through the list BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 143 Enhanced Sound Analysis Software BZ 7206 User Manual 144 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Gal Imtrodueti mnm aun a anaana qali asua ushay tusa 146 6 2 Storing Measurement Data aa 146 Tit rod action yma anam sin qan u 38 52 146 How to Store Measurement Data 147 63 Recalling Measurement Data 150 Tinto d acti Onn u L AS U a Ra a T m 150
146. r a broad frequency band the influence of the sound level meter s housing tripod and user becomes insignificant and the above precautions need not be taken Note When mounting the analyzer on a tripod position the tripod so that one of its legs points in the same direction as the microphone This will reduce the risk of damaging the microphone if the tripod is accidentally knocked over Changing the Measuring Range The measuring range is always fixed throughout a measure ment and because of the large dynamic range of the analyzer rarely requires changing If you make a range change during a measurement you will have to decide whether to save or delete the data so far 84 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Making a Measurement collected For the sake of measurement continuity no range changing is allowed within the same measurement To make a range change press the q hard key to get the display shown in Fig 4 1 As long as the lt Cancel gt soft key is in the menu column you can press it to return to the previous display without interruption or loss of data during a measurement Meas Fange Range T eee ee dE Cancel Fig 4 1 Range menu for making changes to the range setting during a measurement Use the lt A gt and lt Y gt soft keys to raise lower the range as required To c
147. reporting Noise Explorer Type 7815 for data management and reporting Evaluator Type 7820 for community noise calculations or Protector Type 7825 for cal culating personal noise exposure When using one of these software packages no special analyzer settings are required other than the Baud Rate in the Set up PC Commun as the Briiel amp Kj r PC software has control over the analyzer 164 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 165 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ 7210 BZ 7219 and BZ 7206 Specifications The specifications given in this chapter cover all three modules BZ 7206 BZ 7210 and BZ 7219 un less otherwise stated 8 1 Specifications Specifications are given for Type 2260 fitted with Prepolarized Free field 1 3 Microphone Type 4189 and Input Stage ZC 0026 Reference Conditions for Acoustic Calibration Type of Sound Field Free Reference Direction of Sound Incidence Fron tal perpendicular to microphone diaphragm Reference Sound Pressure Level 94dB Reference Frequency 1 kHz Reference Temperature 20 C 68 F Reference Measuring Range 30 110 dB Standards Conforms with the following IEC 60651 1979 plus Amendment 1 1993 02 and A
148. rete Parameters During a Measurement The following is a list of broadband discrete parameters meas ured by the analyzer The X and Y refer respectively to fre quency weightings A C or L and time weightings S F or D e Elapsed time Time elapsed since start of measurement BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 15 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software What is Measured and Recorded e x Peaks Number of times peak levels separated by 1s or more exceed a user defined value during a measurement e lxpk MaxP Maximum Peak value detected during the measurement Lxpk Peak Peak value e Lxy SPL 4 Maximum value of RMS level in 1 second interval as defined by IEC 60651 e Lxy Inst 3 Last sampled instantaneous value of RMS level as de fined by IEC 60651 and JIS C1505 Lyyrs 4 3 second Taktmaximal value as defined by TA Larm and VDI 2058 e Lyyrs FE 5 second Taktmaximal value as defined by TA Larm and VDI 2058 e Lag ASEL A weighted sound exposure level for the duration of the measurement as defined by IEC 60804 e Lxeq i Equivalent continuous level for the duration of the meas urement as defined by IEC 60804 e LxIm Equivalent continuous Impulse level for the duration of the measurement as defined by IEC 60804 Appendix B e Lxeq Lie Can be used as a measure of low frequency spectral con tent
149. rot cvr if you have mounted the protective cover supplied with the analyzer UA 1236 e Choose 65mm if you have mounted a 65mm diameter windscreen UA 0459 UA 0469 is a pack of 6 windscreens BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 85 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements 3 5 3 5 1 3 5 2 3 5 3 e Choose 90mm if you have mounted a 90mm diameter windscreen UA 0237 UA 0254 is a pack of 6 windscreens Controlling Measurements Introduction This section will explain how to set up parameters which activate control stop and store measurements Once they are set up they are not normally changed until the meas urements are completed See section 3 3 for setting up the measurement parameters according to specified requirements Selecting Controlling Parameters Start by pressing the set up hard key symbolised by and then get the Set up Measurement Control menu Fig 3 5 on display Note If the setting for the item Func in Fig 3 5 is set to Manual the remaining items will disappear from the display and the analyzer will be under manual control See section 3 5 3 Settings for Measurement Control Parameters Fig 3 5 itemises the measurement control parameters whose settings or values can be changed as described in section 3 3 2 The following together with the block diagram shown in Fig 3 6 and Fig
150. rrors due to atmospheric variation and measurement repeatability approximately 0 2dB and 0 1dB respectively then there may be a problem Likely causes and remedies are e Changed microphone or input stage with respect to those used during calibration Recalibrate Either manually or as part of a logging or event logging set up BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 89 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration e Malfunctioning microphone Check connections or re place e Malfunctioning input stage or mic ext cable Check con nections or replace e Error in 2260 Contact your local representative or serv ice centre The following examples Fig 4 3 to Fig 4 6 obtained using a white noise signal as the CIC input graphically show var ious possible reasons for change eye Input signal 0 dB prsg Output signal 40 dB 960268e Fig 4 3 Normal working condition Notice the attenuation of approxi mately 40dB in the mid frequency range The low frequency roll off is caused by the preamplifier input resistance 4 4 Calibration 4 4 1 Introduction When to Calibrate Most standards recommend that you calibrate the analyzer before each set of measurements see section 4 4 2 and check the calibration after each set see section 4 4 4 90 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis
151. rs the overload outputs of all the frequency weighted channels Correction Filters Sound Incidence Built in filters for correction of frontal random sound incidence Windscreen None Protective Cover 65mm and 90mm diameter windscreens See Fig 8 14 to Fig 8 16 170 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 8 Specifications for BZ7210 BZ 7219 and BZ 7206 Specifications Measurements V frequency weightings C or L X frequency weightings A C or L Y time weightings S F N a number Available for Display and Storage Broad band Start Date Start Time Stop Date Stop Time Measurement No Elapsed Time No of Pauses Overload Underrange LApk MaxP Lvpk MaxP Peaks A gt L Peaks V gt L LAE ASEL Laeq Lveq Laim Lvim Lveq LAeq LAIm LAeq LASTm3 LAFTm3 LAITm3 LvsTm3 LvFrm3 LviTm3 LASTm5 LAFTm5 LAITm5 Lvstms Lvrtms Lvitms LasMax LAFMax LAIMax LASMin LAFMin LAIMin LvsMax LvFMax LviMax Lvsmin LvFMin LvIMin LxYN1 Lxyn2 Lxyn3 LxYN4 LxYN5 LAEP d Level Distribution Event No Cumulative Distribution Ev Samp No Available for Display and Storage Octave or 1 3 octave band Lxeq LxyMax Lxymin Lxyn1 Lxyn2 Lxyn3 Lxyna Lxyns Level Distribution Cumulative Distribution BZ7206 only Available only for Display as Numbers or Bar graphs Broadband Available only for Display as Numbers or Spectr
152. rvals logging is synchronised with the internal clock e 1 2 3 4 5 6 10 12 15 20 or 30 seconds minutes e 1 2 3 4 6 8 12 or 24 hours The start of the first logging period coincides with the start of the measurement At the specified hour minute second the second logging period starts Subsequent periods will keep in convenient synchronisation with the internal clock See Fig 3 12 for more details BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 45 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Store BB after each sample Can be set to one of the following All Each time the sample has run its course all broadband measurement data will be stored on a previously defined measurement path see section 3 5 10 w o Stat As with A11 but excludes all broadband statistical data Major Par Laeq LC Lpk MaxP LAFMax LAFMin Lc teq Lam Frequency weighting C L depends on set up see section 3 3 3 Nothing No data storage takes place Store Spec after each sample 3 5 8 Can be set to one of the following All Each time the sample has run its course all spectrum measurement data will be stored on a previously defined measurement path see section 3 5 10 w o Stat BZ7206 only As with A11 but excludes only statistical data on 1 octave bands or 1 s octave bands eq Stores only Leg spec
153. s its contents see Table 6 1 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 147 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Storing Measurement Data File Extension File Content S1A 1 1 octave bands with statistics S1B 1 1 octave bands without spectrum sta tistics sic 1 1 octave bands without statistics S1D 1 1 octave band logging or event log ging with file contents specified by the set up S3A 1 3 octave bands with statistics S3B 1 3 octave bands without spectrum sta tistics S3C 1 3 octave bands without statistics S3D 1 3 octave band logging or event log ging with file contents specified by the set up Table 6 1 Indication of the content of a measurement file via its file extension Use the lt A gt and lt Y gt soft keys to increment dec rement the file number The default value is the lowest vacant file number available A warning will appear if you attempt to overwrite an existing file You can however persist with this If you want to change the path press the lt New Path gt soft key to get Fig 6 2 and proceed as described in the platform s user manual to change the path Use Fig 6 2 to switch between internal disk or external memory card via the lt Change Drive gt soft key if you require this If you want to create a new directory for storing the file press the lt Create Dir gt soft key in
154. section 3 3 3 Can be LMax LMin Fast or Slow Leq Linear Table 2 3 Concurrently measured Octave band or 1 3 octave band para meters discrete as well as statistical Additional housekeeping Data Overload Underrange No of Pauses Elapsed Time Start Date and Start Time Stop Date and Stop Time Measurement No Event No BZ 7206 only Event Sample No BZ 7206 only Table 2 4 Concurrently recorded housekeeping data See section 2 3 for a definition of the various measurement parameters and housekeeping data 12 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 2 The Software Operating with the Software 2 2 2 2 1 Operating with the Software Whenever the analyzer is switched on it goes into the Meas urement mode signified by the display shown in Fig 2 1 This mode provides all the facilities for visually monitoring real time data as well as examining data recalled from storage aij Meas SLM Display Menu Back Erase SO LAFCInst 3 7O Main Param Freq Weight Elapsed Time Fig 2 1 The Display menu in the Measurement mode which follows after switching on the analyzer Hard Keys and Soft Keys You control the analyzer via two sets of keys referred to as either hard keys or soft keys Hard keys are single function keys and are located on the body of the analyz
155. sed 0 V or proceeding with a measure ment 5V When Format is set to Sony TCD D8 the signal starts stops recording on Sony TCD D7 or TCD D8 tape record ers during measurement When Format is set to Sony TCD D100 the signal starts stops recording on a Sony TCD D100 tape recorder dur ing measurement The High Level status voltage can also be used to start stop external equipment such as tape and level recorders Input C L Aux 1 only C or L weighted analogue signal with adjustable gain for aural monitoring or audio recording Typically used as the audio channel when remote recording on a DAT machine during a whole measurement Input A Aux 2 only A weighted analogue signal with adjustable gain for au ral monitoring or audio recording Event C L Aux 1 only BZ 7206 only C or L weighted analogue signal with adjustable gain for aural monitoring or audio recording The output is active during events only Typically used as the audio channel when remote recording events only on a DAT machine Event A Aux 2 only BZ 7206 only A weighted analogue signal with adjustable gain for au ral monitoring or audio recording The output is active during events only Event Status BZ7206 only Format High Level Sony TCD D8 or Sony TCD D100 may be selected 78 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3
156. sis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting up the Output af set up Output Aux 1 put uC L a Gain Alu LAF tC Inet 3 Max Levels 110 d Range 20 JE Digital Orr Fig 3 85 The Set up Output menu for AUX 1 and AUX 2 outputs Aux 1 and Aux 2 Note Battery life can be extended by only activating Aux 1 or Aux 2 as needed Aux 1 or Aux 2 can be set to one of the following e off No output e La z Inst 0 to 4 V in direct proportion to the measured parameter Lap Inst and updated every 0 1s Used for tracing on a level recorder 4V corresponds with the Max Level setting and OV corresponds with the Max Level setting minus the Range setting This output voltage updated 10 s can be used to trace the fluctuations of Lap Inst on a level recorder Reference To deliver a reference voltage which switches between 0 and 4V in order to set up a level recorder for tracing the fluctuations of Lay Inst BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 77 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Setting up the Output Meas Status Format High Level Sony TDC D8 or Sony TDC D100 may be selected When Format is set to High Level a status voltage switches between 0 and 5V depending on whether the analyzer is pau
157. t This is because a calibration adjusts the sensitivity of the analyzer and invalidates the current measurement There fore trying to continue with the measurement afterwards by pressing the hard key will not work Instead you must start the measurement again by pressing the y hard key The Briiel amp Kj r External Calibrators To calibrate the analyzer acoustically a reference sound source must be used to apply a known sound level to the microphone A reference sound source could be a Sound Level Calibrator Type 4231 a Multifunction Acoustic Calibrator Type 4226 or a Pistonphone Type 4228 Acoustic calibration is the only complete calibration which ensures correct meas urement results 86 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Calibration Practice and Theory Note When the analyzer is in its calibrate mode it auto matically selects C weighting This allows it to suppress low frequency noise but still respond linearly to the signal of any of the external reference sound sources or equivalents men tioned in the following Sound Level Calibrator Type 4231 This is a calibrator for sound level meters and any other sound measuring equipment requiring calibration in the field It is a reference sound source of 1kHz at 94dB or 114dB For free field microphones for example the type 4189 the corresponding levels
158. t else 9 V I I I I I Event position RS 232 connector Handswitch fm job Fig 3 17 External trigger wiring Start Pre Trig can have a value between 0s and 15s Stop Post Trig can have a value between Os and 15s Fig 3 18 shows two events triggered externally Switch gt Time s 970423e Fig 3 18 Example time sequence for an external trigger Remote Trigger The remote trigger is activated via commands on the 2260 RS 232 interface BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 57 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Ej set up Event Trig Trigger Start Pre Trig Stop Post Trig Fig 3 19 Remote trigger set up screen e To initiate an event trigger send the command Measurement Start_Event e To stop the event send the command Measurement Stop_Event Unlike other commands sent over the RS 232 interface the event trigger commands are interpreted during measure ments Pre and post trigger are available Start Pre Trig can have a value between 0s and 15s Stop Post Trig can have a value between Os and 15s Fig 3 20 shows an event triggered by an RS 232 command sequence Soft key Trigger The soft key trigger appears as two soft keys and is activated on the Meas Profile screen The lt Start Event gt soft key 58 Sound Analysis So
159. t up mode Storing Measurement Data Introduction Before you can store any measurement data the analyzer must be in the measurement mode which is indicated by Meas in the top left hand corner and paused M When you store a measurement you save all measured data current at the time of the manual or automatic pause You then number the storage file and store it as described in section 6 2 2 Note Instantaneous values see section 2 3 2 and profiles see section 5 7 are not stored 146 Sound Analysis Software BZ 7210 BZ 7219 and Br el amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Storing Measurement Data 6 2 2 How to Store Measurement Data 1 Press the hard key if necessary to make sure the analyzer is in the measurement mode to tell the analyzer that store concerns measurement data 2 At this stage you can either wait for an automatic pause or enforce one manually using the hard key 3 Press the M hard key to get the display shown in Fig 6 1 which is the menu for storing measurement data Internal Disk SDATASMEAS 1 Store Messurement in Data Filet OOK S3A Cancel Fig 6 1 Store menu for storing measurement data in the selected highlighted file 4 A measurement file can be stored on either the internal disk or an external memory card on a user selectable path Note the extension of a measurement file indicate
160. ted with all measure ment data The print out of a measurement set up will include the microphone s serial number as well as details of its initial calibration e If a calibration detects that the microphone sensitivity has deviated by more than 1 5dB from the initial cali bration the calibration procedure will automatically be cancelled Contact your local Briiel amp Kj r representative If you select an unspecified microphone there will be no calibration documentation However a large range of sensi tivities is permitted If no initial calibration has been done the software will select the case for an unspecified microphone and a blank line will appear in place of the serial number in Fig 3 4 If you select Input AC then the Type can be selected in the second line Normal for interpreting the input as sound pressure lev els in dB relative to 20 uPa Hand Arm Vib for use with the 3 channel Human Vibra tion Front end WB 3461 special readings of ayy in m s2 in the Spectrum display Whole Body Vib for use with the 3 channel Human Vi bration Front end WB 3461 special readings of awx awy Aw and a in m s in the Spectrum display For Hand Arm Vibration or Whole Body Vibration refer to Technical Documentation BB 1230 for the 3 channel Human Vibration Front end WB 3461 for connecting the front end to 2260 for calibrating the system for measuring and for read ing the results 34 Sound Analys
161. th during and after a measurement Software that Saves you Time and Money Main differences between the software types are e BZ7219 Sound Analysis Software for 2260 Observer e BZ7210 Sound Analysis Software for 2260 Investigator as BZ7219 plus Charge Injection Calibration check e BZ7206 Enhanced Sound Analysis Software for 2260 Investigator as BZ7210 plus Spectral Statistics Meas urement Sequence Event Logging with trigger facilities and editing of markers Note unless otherwise stated all instructions and references to software throughout this manual refer to BZ7219 BZ 7210 and BZ7206 As soon as you start using the software see next section for how to load you will appreciate its most important feature that is everything you set it up to measure it measures concurrently And that saves you a lot of time and money This is possible because the software exploits the enormous computing power of the platform to measure analyse and record all parameters and information in the time it takes to make a single measurement Quite simply this means you have the results as soon as the measurements are over BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 3 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 1 Introduction Noise Measurement Parameters 1 2 No longer do you have to demand repeatable steady state conditions when making extensive measurements even for spectral analyses
162. tore concerns set up data 2 Press the i hard key to get a display such as that shown in Fig 6 5 which is the menu for storing and nam 152 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Storing Set up Data ing the current set up data Note all set up files have the extension STP and are stored on the internal disk on the path SET UP BZ7210 for the BZ 7210 software SET UP BZ7219 for the BZ 7219 software or SET UP BZ7206 for the BZ 7206 software Fig 6 5 shows an example for the BZ7210 software When Fig 6 5 first appears the suggested file number is the last one recalled because in most cases set ups will be recalled modified and restored a Set up Internal Disk SSET UPSB2 7210 Store Messurement and Display Set ups in Set up File fi STP Mame Hit SET UF Fig 6 5 Store menu for storing the current set up in the selected highlighted file with the given Name 3 Use the lt A gt and lt Y gt soft keys to increment dec rement the file number range 1 to 99 A warning will appear if you attempt to overwrite an existing file You can however persist with this 4 Ifyou want to edit the Name of the file press the lt Edit Name gt soft key to get Fig 6 6 and proceed as described in section 6 4 3 After this Fig 6 5 will be redisplayed with the new Name BB1046 14 Sound Anal
163. tra Frequency weighting depends on set up see section 3 3 3 Nothing No data storage takes place Automatic Control Function Event Logging BZ 7206 only The event logging function allows 2260 Investigator to meas ure background sound levels using one set of parameters similar to normal logging function and when triggered by 46 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements an event use another set for the duration of the event event logging For example you might set an event trigger to occur when the Larrinst exceeds 70 dBA As long as the level is below this value 1 minute logging might be in operation As soon as the level goes above this for example a compressor starts the sampling rate is reduced to 1 second intervals event logging and continues until the level drops below the thresh old value In this way you have a higher resolution account of the noise levels during the event During event recordings the running symbol i in the up per left corner of the screen is replaced by the recording symbol e Events may be detected automatically using criteria you se lect or initiated by remote command through the RS 232 interface Event measurement may also be initiated using an external trigger pulse or by activating a softkey See section 3 5 9 Logging
164. tware BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual p sn JON yndyno orpny Ie31i8iq LZ yexpos yndyno jnduy ov puoseg z mndyngy ynduy ov 96 J p10991 VC 8 Wo s8Surpao2 durex 10 sTeUsIS eoumo l SursAreue u uA p sn oq ued pour ndur uy souoydpeoy yya I0 zK e UR 10 q paoo a FV 8 UO S eUsIS Surpao2o z 107 pesn q ued apour yndyno uy eusis ov jo md mo 10 JnduI 10 JOYDOS OINA T 20d g s rtr s 00 1 mdmo o mduj OV gz 19 ndwos g woaz a z eue y SurpoIguo 4ow a 10 pug si ynduroo pue si juurd o gyep Suur 1 JSULI 10 JOYS JI JUL etI s eur od 6 398J19JUJ VLIOS pZ Kd dns z9A0d A PT 01 01 BUIE Xe 10 J soos Jndur IMO EUX EZ yeyoos yndyno Arerrxny puoseg g mdmo Areryrxny g3 A paoo2 4 OAS B UO sTeUSIS SUIpPIOIEL 10 10 10Je1OUeS peusis e se dum x 10 p sn oq uep S BUSIS peUTULIejep a1eMm JJos Jo mdo 10 YoYOoS OWH lod e s rtr s 00 T mdmo Areny 16 p sn JON 3ndur orpnv Ie3t81iGq 03 94906 s y yos oy Suissoid Jo yoyo oy MOYS snus 70S 6T s nser uow ainsveul pue su aos dn jes uoryeorjdde smoyg Aepdsiq 81 Ae dsiq suomdo pue snuew uoryeordde oyeatyoy s amp y OS LT wo Suo 10 qaous qy ur nu w Loy yos ayy sZXe dstq nuom ovpig Aeidsia E QT 9 Qe i eAS OSE SI AJPH SUMU de TL de oy Jo wore y 10 u
165. ulative Di Disel Broad AF 83 606 3 Menu Back Erase Cursor mP Cursor qa Switch Cursor H LAF Inst 3 20 JE Ih Fig 5 4 Cumulative distribution graph of a current measurement Use the soft keys as follows lt Display Menu gt to return to Fig 5 1 Fig 5 2 for a re called measurement lt Back Erase gt for removing bad data see section 4 8 lt Cursor gt to step move the cursor The cursor reading appears in terms of P dB and Q meaning that P dB was exceeded for Q of the elapsed time If Q 50 and P 56dB then Ls 56dB a percentile level 124 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 5 Viewing Results Viewing a Cumulative Distribution lt Switch Cursor gt to switch between a horizontal or ver tical cursor A horizontal cursor Y moves either A up or Y down and a vertical cursor X moves either lt left or right lt Band gt to step through and select either a spectrum band or the broadband BZ7206 only Note The fre quency and time weightings of these are fixed by the set up described in section 3 3 3 and Table 3 2 The cursor can also be moved using the lt or hard keys 5 5 2 Recalled Measurements aj Meas Cumulative Di Disel 20Hz LF 5735 4 Menu Current Meas Cursor mP Cursor a 000E S3A Switch Cursor z LF Inst 3 Fig 5 5 Cumulative
166. urements Store All Store w o Spec Stat Store without Stat g Store All eas Sequence q Store w o Spec Stat Store without Stat Reset and Start Next Action 00 00 01 to 99 59 59 00 00 00 01 to 99 23 59 59 Logged Every 00 00 01 to 99 59 59 Logging Nothing gt w o Stat Major Par Nothing A j w o Stat Continues on next figure rc D Log LAF On off Settings for BZ7206 only Fig 3 6 Block diagram of measurement control parameters shaded and their settings unshaded Diagram continues in Fig 3 7 Note the Meas Sequence setting is named as Automatic in BZ 7210 and BZ 7219 38 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements 00 00 00 01 to 99 23 59 59 Meas Time Logged Every 00 00 01 to 99 59 59 Store BB Background w o Stat Continued from previous figure Store Spec w o Stat Event Logging Logged Every 00 00 01 to 99 59 59 Store BB Store Spec Background Background and Events Log LAF Settings for BZ7206 only 970452 p2 1el2 Fig 3 7 Block diagram showing measurement control parameters shaded and their possible settings unshaded Diagram is continued from Fig 3 6 BB1046 14 Sound
167. vel setting and the bottom of the chart will correspond with the Max Level setting minus the Range setting 80 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring Ad TOntroduetI 6 u gua naqqa E 83 42 Making a Measurement a aaaassaaasa 83 Practical Hints u s n ena aan an pas 83 Changing the Measuring Range 84 4 3 Calibration Practice and Theory 86 Introducti seiecc a u hak Waaa a u s a 86 The Br el amp Kj r External Calibrators 86 Internal Calibration 87 Charge Injection Calibration CIC BZ 7210 and BZ 7206 only 88 AMA Galilbrati itse s sauna a a a anqana aysa 90 Introductions naninira a 90 Calibrating the Analyzer 93 Documentation of a Calibration 105 Checking the Analyzer s Calibration 105 AD REBET a ciietrl saat unan aaa dates Honan ee 105 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 81 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 4 Measuring 46 Starting a New Measurement Manual Control 106 Starting Resetting an
168. vents and Logged Every for Events is set to 00 00 01 Lap Inst is logged every 100 ms during both background and event measurements if Log Lap is set to Bckgr Events and Logged Every for both Background and Events are set to 00 00 01 The logged Lap Inst values are stored together with the other logged data The profile see Fig 5 10 displays the LapUnst values while measuring Note The stored Lap Inst values cannot be displayed by 2260 The data has to be transferred to the PC software Noise Explorer Type 7815 Evaluator Type 7820 or Protector Type 7825 for display 48 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 3 Setting Up the Analyzer Controlling Measurements Background Measurements The following three parameters define the broadband and spectral data to be measured for the background measure ment Logged Every Fixes the duration in hours minutes and seconds of logging samples Any pauses made during the measurement via the 1 hard key end the current logging period and store the sample if specified A subsequent continue via the hard key resumes the logging with a new logging period The pause between the two samples is included in the measurement time The range of possible entries is from 00 00 01 to 99 259359 For the following logging intervals logging is synchronised with the internal cl
169. will return to its set up mode with the chosen set up installed Otherwise press the lt Cancel gt soft key and the analyzer will return unchanged to the set up mode See section 6 4 if you want to store a given set up Refer to the platform s user manual if you want to copy set up files to and from an external memory card or to delete them BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 157 Enhanced Sound Analysis Software BZ 7206 User Manual 158 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 7 Printing and Exporting Data Tide Introduction u Qanaq Gad EE ER 160 7 2 General Procedure a aaaaaaaasaaass 160 73 Output to a Printer s es 161 Introductions nnr ties sedate esate head uy 161 Contents of Measured Data 162 Screen D mpux squa pa a qa aaa biasa 162 Z 4 O tpu utto amp PQ22u pk n n sansa mua au aa na usa 163 Introd uct Ons ana ian nap Saa na S 163 Spreadsheet issih des wanay qas ua H aN aus 164 Data Eilsen nu a selec aaa an E TE 164 PC Software from Br el amp Kjer 164 BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and 159 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 7 Printing and Exporting Data Introduction 7 1 7 2 Introduction This chapter will describ
170. xplains the five different ways of viewing both current and recalled data Storing and Recalling Data Explains how to store and recall data for both measurement and set up files Printing and Exporting Data Explains how to send data to printer computer and spreadsheet and the contents of the data in each case Specifications The specifications of the software and information regarding other equipment available for use with it RARER BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and Enhanced Sound Analysis Software BZ 7206 User Manual Index Menu Overviews An overview of the analyzer s menus Keys Display and Sockets An overview of the analyzer s pushkeys display and sockets Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual il Chapter 1 Introduction VST WeId0m 0 suasana qa Tn h ahua ba 12 Noise Measurement Parameters 1 3 How the Analyzer Works T4 Exp rimenter uu a t Tan aq ahinata a eaii 15 Howto Use this Manual asa BB1046 14 Sound Analysis Software BZ 7210 BZ 7219 and Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 1 Introduction Welcome 1 1 Welcome This manual describes soft ware applications that run on 2260 Observer instruments and on 2260 Investigator in struments A number of funct
171. ysis Software BZ 7210 BZ 7219 and 153 Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Storing Set up Data 5 When you are satisfied with the file name and Name in Fig 6 5 press the lt OK gt soft key to confirm the storage and return to the set up mode a set up Edit Name My SET UP Cancel Fig 6 6 Edit Name menu for editing the name before storing a set up data file See section 6 5 if you want to recall a given set up file Refer to the platform s user manual if you want to copy set up files to and from an external memory card or to delete them 6 4 3 Adding a Name to a Set up Data File Introduction Set up data files are stored in files with a numeric filename and a STP extension for example 24 STP In addition you can give the file a name up to 15 characters long for easier identification using the analyzer s text editor 154 Sound Analysis Software BZ 7210 BZ 7219 and Briel amp Kj r Enhanced Sound Analysis Software BZ 7206 User Manual Chapter 6 Storing and Recalling Data Storing Set up Data Procedure 1 With the Store menu on the display see section 6 4 2 steps 1 and 2 select the set up data file whose name you want to edit Press the lt Edit Name gt soft key The Edit Name menu appears showing the current name for the selected set up data file see Fig 6 6 The menu consists of a text box containing e The curr

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