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User manual for the CR:260A Series

1. 45 Battery Life sea evista e th dr 45 Environmental is oeque Vani e on e ER mA dh dhe abdes Cu Ut cues 45 External Connections Version ONLY nana aaa nanen eee prere peer berber berber nnn nnn 45 Qutput Cables Version Only idiots et erem de ed Gere 45 Software Support Version ONLY prere nennen nnns 45 Electromagnetic P rforman ce acid 45 Appendix 2 Software Installation SEE E SEE E SP ESSE ESSE ESSE ESSE ESSE ES SEE SS RES Se es unn 46 System Requirements dan aaa aaa kena be PERES ERE RERE RR RERE RE RERE RE RERE RE RERE RERE RERE RERE ARE SEER REPER PERES bere REESE 46 Appendix 3 Acoustic Calibrators SEE RRAS R E SP ES RE SP ES PES PES PES PES SEE SEE SE SER ses nenes 47 OpeFatlOn aer ERR XE ERR e e e hr er n e 47 Changing the Battery kaa 49 SPeCCifiGatiON ERA 50 Technical Information ske sai de os san Coa E ER tm Re DR ERIT ERA CEU DN SR RQAR ORT INR ERI ORAN Lata CEA 51 Free Field Gorrection uoo EDI ee Rae PR RR RARI RENE MR eA Sot ak oa bod Jolt ERE e 52 Appendix 4 CE Declaration of Conformity nana nan cuna sense nn open spe SEE SP ESSE ESSE ESSE ESSE ES SEE SS en nunt 53 Warranty Information sis dost na des role dos ci na bes can des re re de s ra te os re re de n re de os nn 54 Cirrus Research Offices sui dine dos sos nde uroi sod toni drite idese ide does nione dd ditar dd 55 CR 260A Series Sound Level Meters Page 5 Preface Thank you for purchas
2. e Calibration Record e Broadband Measurement e 1 1 Octave Band Measurement The 100 measurements can be a combination of any of these Classes In addition to the 100 measurements the instrument also store a Time History or noise profile with each Broadband Measurement Up to 24 hours of 1 second Short Leq Time History can be stored in the memory For example if the instrument makes 24 Broadband measurements of 1 hour duration each measurement will have Time History data However if any more Broadband measurements are made the Time History memory will be full and no further Time History data will be stored The instrument will display a message to confirm this The overall Broadband Measurement parameters will still be stored but without Time History Data Memory nearly full When the memory of the Version instrument is nearly full the instrument will show the following screen Memory nearly full When this screen is displayed the instrument can store the following further measurements e 5 Broadband Measurements e 31 1 Octave Band Measurements Time History Memory Full When the 24 hours of Time History memory is full the instrument will display the following message CR 260A Series Sound Level Meters Page 27 40 miu I 110 Il Time History Memory Full The instrument will continue to measure and store Broadband measurements but no further Time History data will be stored Memory Full The instrument
3. LAST MEASUREMENT Please note that if a new measurement is started the last measurement will be overwritten and the information lost Ensure that measurements have been recorded before making a new measurement JAN The t Version of the CR 260A Series can store up to 100 measurements but only the N last measurement can be viewed from the instrument To view previous measurements connect the instrument to the Deaf Defier3 software and download the esi Fese measurements Svvitching off the instrument Press and hold the Power Button to switch off the Sound Level Meter CR 260A Series Sound Level Meters Page 30 Section 4 Additional features of the Version Instruments Upgrading the CR 260A Series Sound Level Meters to the Version adds new functions and features to the performance of the instrument These new functions are accessed from the Deaf Defier3 Software which is described below Making measurements The Version of the instruments can store up to 100 measurements Each measurement is made in the same way as the standard instruments When each measurement is stopped it is automatically stored in the instrument memory When the instrument is connected to the Deaf Defier3 software the measurements that are stored in the instrument memory can be viewed and downloaded as required Downloading Measurements to the Software Before measurements can be downloaded the software must be installed on to a suitable PC Conn
4. When the instrument is switched on the Start up screen will be displayed and after a short time the display will change to show e y N i rrus the last measurement that was made Research plc CR 262A v1 00 Viewing the last measurement When the Sound Level Meter is switched on it will display the last measurement that has been made If there are no measurements in the memory the instrument will automatically start a new measurement The information that is displayed from the last measurement is shown below Broadband Measurement 1 1 Octave Band Measurement CR263A amp CR 264A Only LAST MEASUREMENT I Hz Leq dBZ kHz Leg dBZ I pea UMS SEL dBA 31 5 50 2 1 80 6 C NI N 4 62 5 50 3 2 74 7 95 125 55 4 4 60 3 E J 250 60 5 8 55 5 Peak dBC Max dBA F SES 721 15 202 104 9 78 6 A 76 5 C 80 5 Z 94 5 RUN TIME t 01 00 14 LAST MEASUREMENT Press the Graph key to switch between the Numerical and Graphical displays LAST MEASUREMENT LAST MEASUREMENT Leq dBA 110 40 tm RUN TIME t 01 00 14 LAST MEASUREMENT Calibration A If a microphone extension cable is to be used during a measurement the instrument must be calibrated with the cable attached CR 260A Series Sound Level Meters Page 21 Calibrating the Sound Level Meter Select the calibration level on the Acoustic Calibrator For most users this will be 94dB when using a Cirrus CR 514 or CR 515 Acoustic Calibrator Gently pu
5. Selected Frequency Filtered Lzr Not stored dB Z Fast Time Weighting Filtered Lzeq Equivalent Sound Level Laeq Lceq amp Lzeq Equivalent Sound Level Measurement Duration Date amp Time of Measurement Frequency Bands Nominal Frequencies 1 1 Octave Band 31Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz 16kHz Measurement Storage The Last measurement is stored Version also provides 100 broadband or 1 1 Octave Band measurements Calibration records are automatically stored Short Leq Time History Laea Lcea Or Lzeq Up to 24 hours at 1 second Automatic Measurements Version Only The unit can be set to record and store data over fixed times of 1 minute 5 minutes 10 minutes 15 minutes 30 minutes 1 hour 8 hours 12 hours or a user defined period Automatic Repeat From 2 to 999 measurements broadband mode only Auto synchronise to the clock Display Graphical LCD with Quasi Analogue Display Selected measurement parameter with level Warnings for Overload Under Range Battery Level Time amp Frequency Weighting Elapsed measurement time Real time short Leq broadband mode Graphical 1 1 Octave Bands CR 264A amp CR 263A Only Recalled Last Measurements Measurement Range Instrument settings CR 260A Series Sound Level Meters Page 45 Weight 450 gms Dimensions 340mm x 75mm x 25mm Batteries 2 x 1 5v Alkaline LR6 AA Battery Life Broadband Typically gt 24 hours Filter Mode Typically
6. 00 00 53 20 Octave 26 02 2004 16 43 37 00 01 44 Broadband 0 16 43 24 00 00 07 m 28 02 2004 19 40 00 00 21 21 v Octave 6 16 43 37 00 01 44 v Download to Select All Download to Alcontrol Alcontrol AMEC AMEC CR260 Downloads E CR260 Downloads DeafDefier Database DeafDefier Database denby Y Create a new folder denby ka Create a new folder Help Cancel Help Download Cancel To select the location where the measurements will be stored do one of the following Select an existing folder in the folder list Press the Create a new folder button to make a new download folder Enter new database name C create as a sub folder of Alcontrol Cancel Enter the name for the new folder Folders can be either a top level folder ie a main folder or can be a sub folder from an existing folder This can be useful for storing measurements made at the same location on different days Press OK to select the new folder Press the Download button to download the measurements from the instrument to the software Measurement will be automatically stored in the database for review and reporting Please refer to the Deaf Defier3 help for further information Setting the instrument clock Press the Configure Instrument button Press the Set Clock button to set the clock of the Sound Level Meter to the clock in the PC Please ensure that the clock of the PC is correct CR 260A Ser
7. C Frequency weighting and Slow Time weighting The maximum Sound level with C Frequency weighting and Slow Time weighting Daily personal noise exposure Equivalent continuous sound pressure level A measure of the average sound pressure level during a period of time t in dB Impulse weighted Leq t as defined by DIN 45641 Statistical analysis of noise levels The n denotes the percentage exceedence Sound Exposure Level SEL with Z frequency weighting Equivalent continuous sound pressure level A measure of the average sound pressure level during a period of time t in dB with Z weighting Sound level with Z Frequency weighting and Fast Time weighting The maximum Sound level with Z Frequency weighting and Fast Time weighting Sound level with Z Frequency weighting and Impulse Time weighting The maximum Sound level with Z Frequency weighting and Impulse Time weighting Sound level with Z Frequency weighting and Slow Time weighting Lzsmax Overload Peak SEL Slow Time Weighting Sound Level Sound Level Meter SPL Statistical Analysis Time History Class 1 Class 2 Under Range Z Weighting CR 260A Series Sound Level Meters Page 41 The maximum Sound level with Z Frequency weighting and Slow Time weighting The input to the Sound Level Meter is too high for the current measurement range Change the range The maximum value reached by the sound pressure at any instant during a m
8. Lzfmin A Las Lasmax Lasmin Sound Level with Slow Time f C Lcs Lcsmax Lcsmin Weighting Z Lzs Lzsmax Lzsmin m A Lar Latmax Latmin Soun Leve wit Impulse C Ler Lcimax Lcimin Time VVeighting Z Lz Lzimax Lzimin Equivalent Continuous Sound A Laeat 7 u Pressure Level vvith C Lceat integration time t Z Lzeqt E A Lae E Sound Exposure Level SEL C Lce Z Lze 7 Peak Sound Pressure C Lcpeak Takt Maximum Sound Level A L DIN 45641 Larteq ds Impulse Weighted Equivalent Lareqt 7 j Sound Pressure Level with C Lcieqt integration time t Lreqt Z Lzteat Please note that the items highlighted in bold above are the default measurement functions and can be selected from the keypad using the Mode button All of the other configurations must be accessed via the Deaf Defier 3 software CR 260A Series Sound Level Meters Page 8 1 1 Octave Band Measurement Mode CR 263A amp CR 264A In the 1 1 Octave Band Filter Mode the CR 260A instrument provides a repeating sequential sweep through the filter bands In addition to the frequency bands the instruments also provide a measurement of the overall Laeg Lceq and Lzeq functions Standard Instruments Frequency Stored Function Weighting Displayed as Mansurenent Applies to Sound Level with Fast Time Z L No 1 1 Octave Weighting S Bands Z Lzeqt 1 ple Equivalent Continuous Sound Pressure Level with A Laeqt 1 Broadband integration time t C Lceq
9. Sound Level Meter or microphone concerned for details CR 260A Series Sound Level Meters Appendix 4 CE Declaration of Conformity Cirrus Research plc Hunmanby UK CE Certificate of Conformity CE Manufacturer Cirrus Research plc Acoustic House Bridlington Road Hunmanby North Yorkshire YO14 OPH United Kingdom Telephone 44 1723 891655 Equipment Description The following equipment manufactured after 1 January 2008 CR 261A Sound Level Meter CR 262A Sound Level Meter CR 263A Sound Level Meter CR 264A Sound Level Meter CR 514 Acoustic Calibrator CR 515 Acoustic Calibrator Along with their standard accessories According to EMC Directives 89 336 EEC and 93 98 EEC meet the following standards EN 61000 6 3 2001 Page 53 EMC Generic emission standard for residential commercial and light industrial environments EN 61000 6 1 2001 EMC Generic immunity standard for residential commercial and light industrial environments Signed Dated 1 January 2008 S O Rourke Director CR 260A Series Sound Level Meters Page 54 Warranty Information 10 11 12 13 14 15 16 This document is a summary of the full warranty document and explains the Cirrus Research plc warranty in ordinary English not in legal or complex terms The warranty covers any acoustic instrument such as a sound level meter acoustic calibrator real time acoustic analyser or personal sound exposure meter dosemeter manufa
10. Start Key 10 m 80 20 mum 90 30 m Xi l 01100 40 m 0 0 01110 Use the Up and Down Arrow keys to change the measurement Range 50 a 1 21120 60 mmm 130 70 CT 140 The bar graph at the top of the screen will change to show the selected range and the current noise level 40 71 1 1 11101 Leq dBA LF dBA OL If the selected measurement C 0 H gj Q D J LI range is too low the instrument ill display the Overload symbol ps ee will display the Overload symbol 104 9 78 6 RUN TIME t 01 00 14 Select a higher measurement range If the selected measurement 40 11 11110 d range is too high the instrument Log dBA LF dBA will display the Under Range C d O G5 H symbol JJ i Peak dBC pes Max dBA F 104 9 UR 78 6 Select a lower measurement range RUN TIME t 01 00 14 CR 260A Series Sound Level Meters Page 12 4 Mode Select Press the Mode key to view the current setup CR 262A amp CR 261A Instruments The CR 262A and CR 261A instruments provide Broadband measurements only The Frequency Weighting can be selected from either dB A or dB C by pressing the Mode button am Oh MODE AND SETTINGS MODE AND SETTINGS LAST MEASUREMENT Broadband Mode Broadband Mode COL Min dBA F Freq Wtg A Freq Wtg C 59 H m Time Wtg F Time W
11. Windows 95 or later including WindowsXP Windows2000 and Windows Vista Deaf Defier3 is supplied on CD ROM with a full installation program and comprehensive on line help which gives details of the options and functions of the software along with details of the calculations used in the Hearing Protector Selection Report Defier3 software under WindowsXP Windows2000 WindowsNT or Windows Vista Please also note that full administrator access may be required to install the Deaf AN Contact your system adminstrator for further details To install the software insert the CD ROM into a CD ROM drive on the PC The installation program should automatically start If the installation program does not automatically start run D setup exe where D is the drive letter of the CD ROM drive on the PC System Requirements The Deaf Defier3 for Windows requires the following Windows 98 Second Edition Windows ME Windows NT Workstation 4 0 with service pack 6 Windows 2000 Professional with service pack 2 Windows XP Home Edition or Professional Windows Vista 25Mb of available hard disk space for program files 64Mb RAM 128Mb recommended CD ROM Drive for Installation VGA or higher resolution monitor Super VGA Recommended Microsoft compatible mouse or pointing device USB Port CR 260A Series Sound Level Meters Page 47 Appendix 3 Acoustic Calibrators Operation Switching on the Calibrator Press the Power Button on the end of the
12. cannot store any more measurements in the memory and those measurements already stored must be downloaded and the memory cleared The instrument will display the following message 40 01 1 110 Memory Full START TO CLEAR MEMORY Press the Start button to clear the memory Pressing the Start button will delete all measurements from the instrument memory Please ensure that all measurements have been downloaded to the Deaf Defier3 software before clearing the instrument memory Once measurements have been cleared from the instrument memory they cannot be retrieved CR 260A Series Sound Level Meters Page 28 Starting the measurement Press the Start button to begin the measurement During the measurement press the Graph key to view the graphical display Pressing the Graph key will switch between the Numerical and Graphical Displays 1 1 Octave Band Mode Broadband Mode CR 264A amp CR 263A Only 40 mam 1 1 11101 40 1 1 1104 Leq dBA LF dBA Leq dBZ LF dBZ S46 bso 5588 bso Peak dBC Max dBA F 104 9 78 6 OCTAVE BAND 250Hz RUN TIME t 01 00 14 RUN TIME t 00 00 05 40 m 0 01 01110 40 m TTT 1108 Leq dBA 110 110 40 t 40 OCTAVE BAND 125Hz RUN TIME t 01 00 14 RUN TIME t 00 00 05 The instrument will continue to run until one of the following conditions occur e The user presses the Stop button e The instrument reaches the end of the preset measurement d
13. gt 12 hours Battery voltage is continuously monitored and warning is given on display of impending low battery condition When batteries approach end of life the unit will store any data required and switch off automatically Environmental Temperature Operating 10 C to 50 C Storage 20 C to 60 C Humidity Up to 95 RH Non Condensing External Connections Version Only Data Output USB Type B Socket Output Cables Version Only Standard ZL 100 USB Cable supplied as standard Software Support Version Only Deaf Defier3 for Windows Version v3 1 0 or later The Deaf Defier3 for Windows requires the following Microsoft Windows 98SE or later 6Mb of available hard disk space for program files CD ROM Drive SVGA Display Microsoft compatible mouse or pointing device USB Connection Electromagnetic Performance EN 55022 1994 EN 61000 4 2 1995 EN 61000 4 3 1996 80MHz 1GHz EN 61000 4 3 1996 25MHz 80MHz EN 50204 1995 900MHz EN 61000 4 8 1994 50Hz CR 260A Series Sound Level Meters Page 46 Appendix 2 Software Installation The CR 260A Series are supplied with a CD which includes the Deaf Defier3 software on a CD This program allows measurements to be downloaded from the Version of the CR 260A Sound Level Meter The Deaf Defier3 software also allows the CR 260A Series instruments to be unlocked using a unique key provided by Cirrus Research plc Deaf Defier3 is suitable for PC s running Microsoft
14. level A label used to show that the Sound Level Meter conforms to the specification of a European Directive Decibels A weighted Decibels C Weighted Decibels Z weighted The units of sound level and noise exposure measurement German Standard which defines the additional measurements LarTeq amp Lieqt A standard time weighting applied by the Sound Level Meter The International Standard for Sound Level Meters The International Standard for Integrating amp Integrating Averaging Sound Level Meters The International Standard for 1 1 Octave amp 1 3 Octave Band Filters The International standard for Sound Level Meter and Integrating Averaging Sound Level Meters that replaces both IEC 60651 and IEC 60804 A standard time weighting applied by the Sound Level Meter A Sound Level Meter which accumulates the total sound energy over a measurement period and calculates an average The noise level exceeded for 10 of the measurement period with A frequency weighting calculated by statistical analysis The noise level exceeded for 90 of the measurement period with A frequency weighting calculated by statistical analysis Sound Exposure Level SEL with A frequency weighting Equivalent continuous sound pressure level A measure of the average sound pressure level during a period of time t in dB with A weighting Sound level with A Frequency weighting and Fast Time weighting The maximum Sound level wi
15. measurements Please refer to page 18 for details of the use of the NK 70 Random Incidence Adaptor Messages and Symbols Messages are used in this manual to bring important information to your attention The different message classes are indicated as shown below Iq Please read A note is a hint or advice that helps you make best use of the i equipment and accessories ET 4 This feature is available only from the dt Version instruments which have been unlocked This feature is not provided by the standard instruments Version Feature Pay attention A caution informs you that improper use of the equipment or failure to follow instructions may cause data loss or may damage the equipment CR 260A Series Sound Level Meters Page 6 Section 1 Introduction Main Features Measurement Functions The measurement functions that can be provided by the CR 260A Series depend upon the version of the instrument and if the instrument has been upgraded to the Version further parameters will be available Listed below is a summary of the measurements that can be provided by the basic Broadband instrument and by the addition of the 1 1 Octave Band filters Broadband Measurement Mode In Broadband Mode the instrument stores the overall values such as Laeg Larmax and Ln s as well as storing a noise profile or Time History during each measurement The frequency weighting used can be selected from either dB A or dB C by cho
16. the cavity facing away from the emitter with the battery compartment facing the table the antenna polarisation horizontal and the calibrator switched on CR 260A Series Sound Level Meters Page 52 Free Field Correction When calibrating a microphone which is to be used for free field measurements a small correction may be necessary to compensate for the difference between the microphone s free field response at zero degrees or head on incidence and the pressure level generated by the calibrator The correction is typically 0 3dB for inch microphones making the effective calibration level 93 7dB The table below shows the correction values for the standard microphones of Cirrus Research plc Calibration corrections are listed below for the Cirrus Research plc Va Capsules and three microphone capsules commonly used in Calibration Laboratories Microphone Correction Values Microphone Class Calibration Correction Effective Calibration Level MK 202 0 3dB 93 7 dB MK 215 0 3dB 93 7 dB MK 216 0 3dB 93 7 dB MK 226 0 3dB 93 7 dB MK 224 0 3dB 93 7 dB B amp K 4134 OdB 94 0 dB B amp K 4180 OdB 94 0 dB B amp K 4192 OdB 94 0 dB Example An example of the procedure used to calculate the value for an MK 224 microphone is shown below Level 94 0dB Microphone Correction Level 94 0dB 0 3dB Level 2 93 7dB Different microphones will have different correction values Please check the operation manual for the
17. 7 Keypad FUNCHONS wee oi ci oue eerte nn pe 19 Switching Ori es citus y aea E ey eR EREREERRRENR na ETRARS RI YR 20 Galibratlones sin P MEM 20 Setting the measurement range issssssssssssssssssssesesee esee ness esee semen temen semester seen 22 Setting the measurement mode re etere eee geret pene E i 23 Broadband Measurements ket e tao EAE EP Ee E UE VER DERE ERE 23 1 1 Octave Band Measurements CR 264A amp CR 263A Only aaa aa nana aa nene nenen 23 Making a measurement iss raion ch he orate e de 26 Memory FUNCTIONS osi ERI I Mex In ede RR MR PDr V d dete wea DIM DI VAR uta US DIUI 26 Switching off the instrumernt oii eene er pk eR ena vea tok ERE IRR EROR VELIE EX stein 29 Section 4 Additional features of the Version Instruments eese 30 Making measurements onere er dk Ren en e En e d nw lU e REI Re RIDE ER CE i Pe dai 30 Downloading Measurements to the Software ssssssssssessssessseeseee menm emen 30 Connecting the instrument to the PO aaa aaa aaa aaa 30 Using the Deaf Defier3 Softyvare nana EEE EERE eee nn nnn 32 Section 5 Maintenance amp Care qa nan nan c anen sen Spe SPAR R E SPAR PE SP ES PE SP ESE SEE PES PES PES SEE SEE SEE SE sunu nana 36 Section 6 Troubleshooting nn nan ann can sans enen sen pp e SP ESE E SP ES PE SP ES PES P ES PESE SEE PES SEE SEE SEE SEE SEE SEE S RES RES R SHA 37 Ij 37 Galibration is nisin dd nn e MERE edh SERERE oe ke dd ot dyt RYE Gr Ee ae d
18. CR 260A Series Sound Level Meters Page 1 User Manual for the CR 260A Series of Sound Level Meters Cirrus Research plc dedicated to noise measurement This manual the software to which it relates the program code and drawings are all Copyright Cirrus Research plc 1989 2014 CR 260A Series Sound Level Meters Page 2 The content of this manual any illustrations technical information and descriptions within this document were correct at the time of going to print Cirrus Research plc reserves the right to make any changes necessary without notice in line with the policy of continuing product development and improvement No part of this publication may be duplicated reprinted stored in a data processing system or transmitted by electronic mechanical photographic or other means or recorded translated edited abridged or expanded without the prior written consent of Cirrus Research plc No liability is accepted for any inaccuracies or omissions in this manual although due care has been taken to ensure that is it complete and accurate as possible Accessories supplied by Cirrus Research plc have been designed for use with the instrumentation manufactured by Cirrus Research plc No responsibility is accepted for damage caused by the use of any other parts or accessories In order to take account of a policy of continual development Cirrus Research plc reserves the right to change any of the information contained in this public
19. CR 263A Selecting the measurement mode allows these different measurements to be made Broadband Measurements Press the Mode button to change the Measurement Mode to Broadband Mode The instrument will display the current settings for the Broadband Mode All of the CR 260A Series can measure in either dB A or dB C when set to the Broadband mode function Press the Mode button to select the frequency weighting required ON ON MODE AND SETTINGS MODE AND SETTINGS 40 m 110 4 Broadband Mode Broadband Mode con er Time Weg F Time Wea F J U b5 B Run Time Manual Run Time Manual Peak dBC Max dBA F Status Running Status Running 104 9 78 6 PRESS START TO MEASURE PRESS START TO MEASURE RUN TIME t 01 00 14 T oi In the CR 262A amp CR 261A instruments pressing the Mode key will cycle between the Mode view and the measurement view Press Start to begin the measurement 1 1 Octave Band Measurements CR 264A amp CR 263A Only Pressing the Mode key will cycle between the Broadband Modes 1 1 Octave Mode and the measurement view CR 260A Series Sound Level Meters Page 24 ON ON TAN MODE AND SETTINGS MODE AND SETTINGS MODE AND SETTINGS LAST MEASUREMENT I Broadband Mode Broadband Mode 1 1 Octave Mode Leq dBA Min dBA F Freq Wtg Z Oo 38 6 Freq Wtg A Freq Wtg C Time Wtg F LI Time Wtg F Time Wtg F Run Time Manual Run Time Manual Run Time Manual Status Stopped Peak dBC Max dBA F
20. Calibrator to switch the unit on The Indicator will illuminate to show that the unit is operating Power Button CR 514 Acoustic Calibrator y ACirrus Research ple 94dB 1kHZ gy Power Indicator The calibrator will automatically switch off after 5 minutes to preserve battery power To switch off the calibrator manually press the power button again and the indicator will extinguish to show that the unit is switched off Permanent on Mode For some applications there may be a need to have the calibrator switched on continuously To allow for this the calibrator can be turned on by pressing and holding the power button for three seconds Release the button and the indicator will flash to show that the unit is in permanent on mode Press the power button to switch off the calibrator CR 260A Series Sound Level Meters Page 48 Calibrating a Sound Level Meter Push the microphone of the Sound Level Meter into the cavity at the end of the calibrator Ensure the microphone is fully inserted into the cavity and is past the O ring seals The microphone should be parallel to the body of the calibrator Also ensure that the small bleed hole next to the microphone cavity is not blocked as this could cause damage to the microphone Most modern Sound Level Meters have electronic calibration with the level adjusted automatically Adjust the Sound Level Meter to the correct level where applicable When correcting the value gen
21. RAGING SOUND LEVEL METER Sa Mode A wR Graph v Keypad Cal Start Stop D Tripod Mount J Cirrus USB Socket Battery Holder _ Multi I O Socket Battery Holder CR 260A Series Sound Level Meters Page 17 Assembly The CR 260A instruments are supplied fully assembled apart from the removable MV 200D Preamplifier for Class 1 instruments CR 261A amp CR 263A and the batteries Preamplifier The preamplifier must be connected to the Sound Level Meter before the unit is switched on This unit is connected to the top of the instrument using a locking ring To connect the MV 200D Preamplifier follow the diagram below 2 G 1 Push the preamplifier into the socket on the Sound Level Meter 2 Ensure the connector has located into the socket 3 Tighten the Locking Ring Do not cross thread the locking ring Damage caused by misuse is not covered by the vvarranty for the instrument Removing the Preamplifier Do not twist the preamplifier body Unscrew the locking ring and pull the preamplifier from the Sound Level Meter Using Microphone Extension Cables The Class 1 CR 261A amp CR 263A instruments can be used with a microphone extension cable If a microphone extension cable is to be used durin
22. S 110 40 er Rn Tj 40 OCTAVE BAND 125Hz Press the Graph button RUN TIME t 01 00 14 RUN TIME t 00 00 05 again to return to the Numerical display LAST MEASUREMENT I Hz Leq dBZ kHz Leg dBz El Leq dBA SEL dBA 31 5 50 2 1 80 6 C C CI 62 5 50 3 2 74 7 95 125 554 4 603 l U 250 60 5 8 55 5 Peak dBC Max dBA F 300 FEE 16 ue 104 9 78 6 A 76 5 C 80 5 Z 94 5 RUN TIME t 01 00 14 LAST MEASUREMENT Press the Stop button to finish the measurement The last measurement will be displayed CR 260A Series Sound Level Meters Page 14 6 Review the measurement 1 1 Octave Band Mode Broadband Mode CR 264A amp CR 263A Only The instrument will LAST MEASUREMENT Hz Leq dBZ kHz Leg dBz E display the last Leg dBA SEL dBA 31 5 50 2 1 80 6 C Ce C 62 5 50 3 2 74 7 measurement made 95 4 125 55 4 4 60 3 JIU 250 60 5 8 55 5 Peak dBC Max dBA F 500 72 1 ig 50 2 Press the Graph button to Hs hical 104 9 78 6 A 76 5 C 80 5 Z 94 5 bigis e grepiica RUN TIME t 01 00 14 LAST MEASUREMENT display LAST MEASUREMENT LAST MEASUREMENT Leq dBA 110 90 Press the Graph button i summam 20 again to view the RUN TIME t 01 00 14 LAST MEASUREMENT Numerical display 7 Recording the measurement information Please note that the standard CR 260A Instrument only stores the last measurement in memory When a new measurement is made the last measurement information is erased and overwritten Record the measurement information before making a new m
23. Status Stopped Status Stopped 104 9 78 6 PRESS START TO MEASURE PRESS START TO MEASURE PRESS START TO MEASURE RUN TIME t 01 00 14 Pu C Hose Select the Mode required and press Start to begin the measurement Understanding how 1 1 Octave Band Measurements are made In the CR 264A and CR 263A instruments are a set of 1 1 Octave Band Filters which allow the instrument to measure the frequency content of noise sources When the 1 1 Octave Band measurement mode is selected the instrument will automatically sweep through the frequency bands from 31Hz to 16kHz followed by a dB A Leq a dB C Leq and then a dB Z Leq measurement All frequency band measurements are made as Leq measurements and the Octave Band Filters are automatically weighted with the dB Z frequency weighting This sweep takes 2 seconds per band with a total of 26 seconds for a complete sweep When the sweep is completed the instrument starts the next sweep with the Leq for each measurement band being added to the previous value The instrument will continue to make sweeps of the frequency bands until the user presses the Stop key The figures below show how this works in practice Example 1 The user Starts the measurement and Stops the measurement when the dB Z Leq is completed 40 0 23110 110 c wWi OCTAVE BAND 125Hz RUN TIME t 00 00 05 Automatic Sweep Leq for each band Example 2 The user Sta
24. V4 Condenser Class 2 Class Class 2 pre polarized Free field V4 Condenser Random Incidence to ANSI S1 4 with NK 70 Adaptor Capacitance 18pF Microphone Preamplifier Class 1 MV 200D Removable Preamplifier Class 2 MV 200D Integral Preamplifier Microphone Extension cables Class 1 Instruments only ZL 202 2m ZL 205 5m ZL 210 10m ZL 215 15m ZL 220 20m ZL 225 25m Time Weightings F Fast to IEC 61672 1 2002 Class 1 or 2 Group X Version also provides S Slow to IEC 61672 1 2002 Class 1 or 2 Group X I Impulse to IEC 61672 1 2002 Class 1 or 2 Group X Frequency Weightings Channel 1 A or C User Selectable Channel 2 C for Peak 1 Version also provides Channel 1 AC Z Channel 2 C for Peak CR 260A Series Sound Level Meters Page 43 Z weighting is a flat frequency response of 8Hz 20kHz 1 5dB excluding microphone response When either 1 1 or 1 3 Octave Band filters are selected the Z weighting is used Frequency Weightings can only be changed from the default values in the Versions of the CR 260A Series Contact your local representative for further information Amplitude Weighting Q 3 True Energy Integration Measurement Range Broadband 24dB A to 140dB A Class 1 26dB A to 140dB A Class 2 143dB C Peak 70 to 140dB Range 1 1 Octave Band Filters CR 264A amp CR 263A 15dB Z to 140dB Z Range Steps 10 80 20 90 30 100 40 110 50 120 60 130 70 140 Noise Floor Typ
25. ation without prior notice Produced by Cirrus Research plc Acoustic House Bridlington Road Hunmanby North Yorkshire YO14 OPH United Kingdom Copyright Cirrus Research plc 2014 Reference Number 07 14 CR 260A 04 Document Printing Date Friday 11 July 2014 CR 260A Series Sound Level Meters Page 3 PROP AGC ndasi ncicesi st T T E T se cctssawsaseasaeecssacaces 5 Messages and Symbol S aieiaa pi cio pinion ANE AA AEAEE Pia EET CE RT wer ieee 5 Section 1 Introduction eeeeseeseesee seu ne unn RE SEE SP umana nana nne u nausea sauna sunu nuu 6 Malin Feature S aim ILI I LLLI T TL 6 Measurement FUNCTION Sg sd den ind dh EE TENET NNOKR RR NEESRIPR RARE NIE RES trees 6 Broadband Measurement Mode ana aaa aaa aak kihen cence eee eee eee ee eee EEE eee eee eee eee sea sea sea sea sen nnn 6 1 1 Octave Band Measurement Mode CR 263A amp CR 2644 csssssesseeseeneen mmm 8 Options S ACCESSOMES ane oe RI Erra RI RR ERIT RR nj est er n NM RI dh nete sen RI deh thot RA RU cues 8 Section 2 Getting Started es E SEE SEE SEE SP ES eheu nun PES PES PES PES SEE SEE SEE SEE SEE RES RES Renee 9 o e cilc emm 9 Section 3 Using the CR 260A Series Sound Level Meters eren 15 Unpacking and checking the Sound Level Meter ssssssssssssseee emen 15 Instrument LAV OUTS as soi di omnei ERR ERANT ERRMER ERR EK RRRERRM RISE aa at dr de Emi te DERE 16 n ti injsj e D E 1
26. ative for assistance Measurements amp Settings Standard Instruments CR 260A Series Sound Level Meters Page 38 Symptom Possible Cause Possible Remedy No measurements have been stored Only 1 measurement can be stored in the Standard instruments The measurement was reset Restart the measurement Overload symbol is shown The noise level is too high for the current range Select a higher measurement range Under Range symbol is shown The noise level is too low for the current range Select a lower measurement range Version Instruments Symptom Possible Cause Possible Remedy No measurements have been stored Memory is full Clear the memory using the Deaf Defier3 software The measurement was reset Restart the measurement Instrument has selected Impulse Time weighting Lieqt User Metric may have been selected Select SEL User Metric and change Time Weighting required Overload symbol is shown The noise level is too high for Select a higher measurement the current range range Under Range symbol is shown The noise level is too low for Select a lower measurement the current range range The measurement stops after The Run Duration has been set Select the Manual Run a set time to a preset value Duration The Run Duration has been set Select the Manual Run to the User Defined value Duration The measureme
27. ck the polarity of the batteries The instrument has become corrupted Contact your local distributor or Cirrus Research plc Calibration Symptom Possible Cause Possible Remedy The calibration fails Too Low The Acoustic Calibrator is not switched on Switch on the Acoustic Calibrator and retry The Acoustic Calibrator is not fitted correctly Check that the Acoustic Calibrator is fitted according to the instructions supplied The Preamplifer is not fitted correctly Class 1 Instruments only For Class 1 Instruments refer to page 17 for details of fitting the preamplifier The microphone capsule is loose or not fitted Check that the microphone capsule is tight and fitted correctly Calibration level set to a different level Set the calibration level to the value provided by the Acoustic Calibrator The Microphone may be damaged Contact Cirrus Research plc or your local representative for assistance The calibration fails Too High The Acoustic Calibrator is set to a higher level than the expected level Set the Acoustic Calibrator to the correct level The calibration fails Unstable The background noise level is within 15dB of the calibration level Move to a location where the background noise level is more than 15dB below the calibration level The Microphone may be damaged Contact Cirrus Research plc or your local represent
28. creen 104 9 78 6 RUN TIME t 01 00 14 10 Ee 80 20 190 Use the Up and Down keys to change the measurement range As the range changes the Top and Bottom of the selected range is shown on the graph 30 100 40 m 0 01110 50 120 This example shows a noise level of 68dB on the different measurement ranges Select a measurement range appropriate for the levels to be measured 60mm T 1 1 1130 70 Co 140 eq dBA mas TT EM It is very important that a Sound Level Meter is not overloaded a air C when making a measurement In this example the range is set cog 554 to 10 80dB The noise level is higher than this and so the Peak dBC Max dBA F instrument indicates Overload as OL 104 9 78 6 RUN TIME t 01 00 14 Change to a higher measurement range CR 260A Series Sound Level Meters Page 23 40 1 108 Leq dBA LF EE In this example the noise level is below the bottom of the selected measurement range Peak dBc RA Max dBA F 104 9 UR 78 6 Select a lower measurement range RUN TIME t 01 00 14 If the range is changed during a measurement the current measurement will be discarded and a new measurement started Setting the measurement mode The CR 260A Series Sound Level Meters can make either Broadband Measurements CR 262A amp CR 261A or 1 1 Octave Band Measurements CR 264A amp
29. ctured by Cirrus Research plc after September 1st 2011 The warranty covers all faults on and minor accidental damage to the instrument except the microphone capsule for the period defined in para 5 below Minor accidental damage does not include blatant miss use damage caused by the use of any accessories or components not specified or recommended by Cirrus damage caused through non Cirrus modification continued use outside of Cirrus recommended procedure or conditions or use contrary to the any advice provided by Cirrus The initial period of the warranty is 2 two years or 104 weeks from the date of purchase as a new instrument from Cirrus Research plc or their formally approved distributors OR 130 weeks from the date the instrument passed its final manufacturing inspection at Cirrus Research plc whichever is the shorter A shorter 1 one year or 52 week warranty is offered for used ex demo or ex rental equipment unless a special arrangement is made and a written confirmation of the special warranty is given by Cirrus Research plc Any rechargeable battery only has the battery manufacturer s one year warranty however there will be a reduced charge for their replacement during the annual Traceable Calibration On completion of the annual Traceable Calibration by Cirrus Research plc or an official Cirrus Calibration Centre the instrument will automatically be given an additional free one year warranty It follows that should the
30. e button to continue Upgrade More Information To upgrade the instrument to the Version specifications press the Upgrade key and the following screen will be displayed Enter the Upgrade key and press the Upgrade Instrument button Please enter pour Upgrade Key RHE4R 3AA4P EH2AU 4 Upgrade Instrument Copy from clipboard Close The software will program the instrument with the key to unlock the new features The software will show the following screens during the upgrade process Programming Instrument Please wait while the CR 260 Sound Level Meter is programmed with the new features Close If the instrument is not upgraded to the Version specification measurements cannot be downloaded to the Deaf Defier3 software Upgrade Successfull Your CR 260 Sound Level Meter now has all extra features enabled This upgrade is permanent and you will not need to repeat this process Close For details of upgrading the standard instrument to the Version specification please contact your local representative or Cirrus Research plc T Version Instruments When the Deaf Defier3 software is installed and run use the Download option to connect to the instrument The Deaf Defier3 software will automatically detect the CR 260A instrument and allow measurements to be downloaded P Version Feature CR 260A Series Sound Level Meters Page 32 Using the Deaf Defier3 Software Ensure that the Sound Leve
31. e setup To create a new configuration press the New Setup button and change the settings to those required To program the instrument with the new settings press the Send Setup to Instrument To delete a configuration from the software press the Delete Setup button CR 260A Series Sound Level Meters Page 35 The user can select and alter the following parameters Function Filter Mode Run Duration User Time Time Weighting Frequency Weighting Level Range User Metric Ln Setup Notes Available Options Broadband Mode or 1 1 Octave Band Mode CR 264A amp CR 263A Only Manual 1 minute 5 minutes 10 minutes 15 minutes 30 minutes 1 hour 8 hours 12 hours User Defined Enter a user defined measurement duration and select User Defined from the Run Duration list above dB A dB C dB Z Fast Slow Impulse 10 to 80 20 to 90 30 to 100 40 to 110 50 to 120 60 to 130 70 to 140 SEL LAE or LIeqt Ln 1 to 6 Define the exceedence level for Ln s 1 to 6 User notes for the measurement setup CR 260A Series Sound Level Meters Page 36 Section 5 Maintenance amp Care The CR 260A Series are precision measurement instruments and should be treated with care Do not allow the instrument to be exposed to substances which may cause damage to the components of the unit If the instrument is to be used in an environment where particles such as dust may come into contact with the instrument always use a Winds
32. easurement To store additional measurements in memory the instrument must be upgraded to the Version 8 Switch off Press and hold the Power button D to switch off the instrument CR 260A Series Sound Level Meters Page 15 Section 3 Using the CR 260A Series Sound Level Meters Unpacking and checking the Sound Level Meter Carefully remove the instrument from its shipping container and inspect it for possible damage or missing items If the meter appears to be damaged or something is missing contact Cirrus Research plc or your local representative immediately The basic CR 260A Series instrument is supplied with the following standard accessories Deaf Defier3 for Windows Software on CD ROM CR 260A Series User Manual ZL 100 USB Data Cable Batteries 2 x AA Certificate of Calibration In addition the Class 1 versions of the instrument are supplied with an MV 200D Preamplifier and a microphone box The microphone capsule will be fitted to the MV 200D Preamplifier before shipping If you have ordered the instrument as a complete measurement kit you will also receive an Acoustic Calibrator Carrying Case Wriststrap and Pen CR 260A Series Sound Level Meters Page 16 Instrument Layout Microphone Capsule Preamplifier 40 aod Leq dBA LF dBA gja 858 om Peak dBC Max dBA 104 9 78 6 RUN TIME t 01 00 14 Information Label CR 262A INTEGRATING AVE
33. easurement period in dB usually with C frequency weighting Sound Exposure Level displayed as Lae Lce or Lze A standard time weighting applied by the Sound Level Meter Sound Pressure Level with a Frequency weighting such as dB A An instrument for measuring various noise parameters Sound Pressure Level the basic measure of noise loudness expressed in decibels A calculation performed by a Sound Level Meter on the noise levels measured during the measurement period to describe the statistical spread of the noise A sample of the noise levels taken every 1 second throughout the measurement period Laboratory amp Field Grade for Sound Level Meters General Field Grade for Sound Level Meter The input to the Sound Level Meter is too low for the current measurement range Change the range Z weighting is a flat frequency response of 8Hz 20kHz 1 5dB excluding microphone response CR 260A Series Sound Level Meters Page 42 Appendix 1 Specifications Instrument Versions CR 261A Class 1 CR 262A Class 2 CR 263A Class 1 with 1 1 Octave Band Filters CR 264A Class 2 with 1 1 Octave Band Filters Applicable Standards Sound Level Meter IEC 61672 1 2002 Class 1 or 2 Group X IEC 60651 1979 Type 1 I or Type 21 IEC 60804 1985 Type 1 or Type 2 ANSI S1 4 with NK 70 Random Incidence Adaptor Fitted 1 1 amp 1 3 Octave Band Filters where fitted to IEC 61260 Class 1 Microphone Class 1 Class Class 1 pre polarized Free field
34. ect All Alcontrol AMEC CR260 Downloads DeafDefier Database denby v Create a new folder The user can download either selected measurements or all measurements To select individual measurements click on the measurement with the mouse To select multiple measurements hold the Control key and select the measurements To select all of the measurements in the memory press the Select All button and the software will highlight all of the measurements in the memory CR 260A Series Sound Level Meters Page 33 The examples below show a single measurement selected and all of the measurements selected Select the measurements you wish to download Select the measurements you wish to download E No I E Type E Date I a Time RunTime No Type Date Time Run Time 10 Octave 17 02 2004 15 38 30 00 01 29 9 ctav 1710212004 5 36 36 00 00 54 11 Octave 17102 2004 15 47 43 00 00 30 g ctavi 1710212004 5 38 3 00 01 29 3 12 Octave 17 02 2004 15 48 37 00 01 10 ctav 1710212004 5 00 00 30 13 Octave 1710212004 15 53 20 00 00 03 ctav 5 00 01 10 14 Calibration 18 02 2004 11 31 21 3 Octave 5 00 00 03 15 Broadband 1810212004 11 35 35 00 01 49 Calibration 16 Octave 1810212004 11 38 39 00 00 00 5 Broadband 00 01 49 17 Octave 1810212004 11 38 43 00 00 16 6 Octave 0 11 38 39 00 00 00 18 Broadband 26 02 2004 16 41 47 00 00 53 Octave 11 38 43 00 00 16 19 Broadband 26 02 2004 16 43 24 00 00 07 Broadband 16 41 47
35. ecting the instrument to the PC The CR 260A instruments connect to the PC using the supplied ZL 100 USB Cable Cirrus Cirrus Research ple p USB Socket Battery Holder Multi VO Socket 5 Connect the ZL 100 USB Cable to the USB socket on the bottom of the instrument Ensure that the cable is inserted correctly vvith the arrow on the top of the connector Do not force the connector into the socket as this may cause damage When the Deaf Defier3 software is installed and run use the Download option to connect to the instrument oo Defier3 software for details of the download Please refer to the Help provided with the Deaf procedure Connect to USB Port on PC Ge Connect to USB Port on PC CR 260A Series Sound Level Meters Page 31 Standard Version Instruments When a standard CR 260A Series Sound Level Meter is connected to the Software the user will be given the option to enter the unlocking key to upgrade the instrument to the Version specification The screen below will be shown The instrument connected does not If you have purchased an Upgrade Key and have Deaf Defier features enabled wish to upgrade your instrument now please click the Upgrad
36. en the battery voltage is below 6 4 volts the calibrator will not turn on A discharged battery may allow switch on but will soon drop in voltage and indicate low battery or switch off Specification Frequency Sound Level Standardisation Distortion Operating Humidity Operating Static Pressure Operating Temperature Storing Temperature Effective Volume Cavity Diameter Battery Battery Life Battery Voltage Weight with Battery Dimensions CR 260A Series Sound Level Meters Page 50 1kHz 1 94dB re 20uPa CR 514 IEC 60942 2003 Class 2 CR 515 IEC 60942 2003 Class 1 Less than 2 25 to 90 Relative Humidity 65 kPa to 108kPa 10 C to 50 C 20 C to 60 C 6 19 cm 0 2 cm 0 525 inch 1 x 9v 6F22 Neda 1604 Approx 15 Hours Continuous Use 9v Nominal 10v Maximum 6 4v Minimum 185g 135mm x 48mm CR 260A Series Sound Level Meters Page 51 Technical Information The normal mode of operation of the calibrator is with the unit switched on When the LED indicates the unit is switched on this produces the greatest radio frequency emissions The calibrator continues to function after exposure to contact discharges up to 4kV and air discharges up to 8kV for both positive and negative voltages relative to earth ground The calibrator conforms to IEC 60942 2003 for a modulated root mean square electromagnetic field strength of 10 V m The maximum susceptibility to power and radio frequency fields is with
37. erated by the calibrator a correction for the Class of microphone capsule may need to be applied see Appendix 2 Background Noise In order for the calibrator to operate as intended the ambient acoustic noise level should be no greater than 80dBA Stabilisation In order for the sound pressure level and frequency to stabilise after switching the calibrator on when coupled to a microphone a period of at least 3 seconds should be allowed before performing a calibration CR 260A Series Sound Level Meters Page 49 Changing the Battery The CR 514 amp CR 515 acoustic calibrators use a single 9v alkaline battery This Class of battery is known as 6F22 or NEDA 1604 It is also commonly known as PP3 1 Unscrew the screw holding the battery cover on using a coin or the keyring supplied 2 The battery Class 6F22 PP3 can now be eased out of its holder and replaced The battery should be eased out terminal side first by pushing against the spring at the other end Ensure that the battery is inserted with the correct polarity with the negative terminal at the contact with the larger cutout Battery Cover Retaining Screw Battery Battery Class The battery should be an alkaline battery not an ordinary dry cell The battery is 9 volts when new and will operate the calibrator down to 6 4 volts When the battery voltage is below 6 6 volts but above 6 4 volts the power LED will flash to indicate that the battery voltage is low Wh
38. esearch Offices The addresses given below are the Cirrus Research plc offices Cirrus Research plc also have approved distributors and agents is many countries worldwide For details of your local representative please contact Cirrus Research plc at the address below Contact details for Cirrus Research authorised distributors and agents are also available from the Internet Web site at the address shown below Main Office Cirrus Research plc Acoustic House Bridlington Road Hunmanby North Yorkshire United Kingdom YO14 OPH Telephone 44 0 1723 891655 Fax 44 0 1723 891742 E mail sales cirrusresearch co uk Web Site www cirrusresearch co uk Germany Cirrus Research plc Deutschland Arabella Center Lyoner Strasse 44 48 D 60528 Frankfurt Germany Tel 49 0 69 95932047 Fax 49 0 69 95932049 Email vertrieb cirrusresearch de Web www cirrusresearch de Spain CIRRUS RESEARCH S L Travessera de Gracia 62 4 7a 08006 Barcelona SPAIN Tel 34 933 622 891 Email info cirrusresearch es Web www cirrusresearch es
39. et dh 37 Medsurements amp Settings sh hh e de 38 Downloading Measurements VersiOn Only ccecceceee etcetera be rne eee eee eee nnn 38 Section 7 Glossary nana nun e nen spe spe nen SEE SE E SEE SEE SEE SP ES annuam annuam PES PESE SEE PES PES PES SEE SEE SEE SEE RES RES RES Re SEN 39 Appendix 1 SpecificationS kann nan uns na seen enen sen Spe SEE SEE SP ESE E SP ES eheu nahm PES PES ES PES SEE SEE u nnus u sanant 42 Instrument VERSIONS press nera e di et 42 Applicable Standards EORR RM IM RI RD 42 MICFOPNONE oeste otio uet iot y TY pun dk ed DRE LIS S DY a CX PERI TX RD URN pu EE NIRE CHE D abies 42 Microphone Preamplifier aAa a EAEE ENEA AERAR ERE RERE RERE RERE ERE RERE sea sea sean nn nnn 42 Microphone Extension cables Class 1 Instruments only aaa aaa aaa aaa ana ann kann neve eneve nmn 42 Time WeightlHgs seni shper hh n Ra 42 Frequency WelghtlngSs si iste dd pd e dd da 42 Amplitude Neightin gj ci i vga 43 M asurement Range is ph dh ph 43 RANGE StEPS iii ere e de et der eh nes 43 Noise Floor TYpical Jason e Pd 43 Availabl Measurements zanati ssm vonin dhet dt te 43 Frequency Bands Nominal Frequencies nana aaa aaa nana pap e ene nemen mee menn eee eee nnn nnn 44 Meas rement Storage sci At AA i Eee 44 Automatic Measurements Version Only kaa 44 DIC eT ETT 44 sene TT 45 CR 260A Series Sound Level Meters Page 4 DIMENSIONS or RI v xx er ek e e oh dd no 45 Batteries nani de vini m
40. g a measurement the instrument must be calibrated with the cable attached CR 260A Series Sound Level Meters Page 18 Connect the microphone extension cable in the same manner as the MV 200D Preamplifier Batteries The batteries of the CR 260A are located behind the cover on the bottom of the instrument Slide the cover to the right hand side to remove and to access the battery holder Ensure the instrument is switched off Remove the battery holder from the instrument and insert the batteries The CR 260A instruments uses two AA Class batteries also known as LR6 USB Socket Battery Holder Multi VO Socket Ensure that the batteries are inserted correctly DO NOT reverse the polarity of the batteries as this may cause damage to the instrument Windshield The CR 260A Series can be used with a UA 237 Foam Windshield which will reduce the noise levels generated by air turbulence over the microphone capsule The windshield can also be used to protect the microphone capsule of the Sound Level Meter from dust which may affect the performance of the instrument To use the UA 237 Windshield push the hole in the windshield over the microphone of the Sound Level Meter The UA 237 Windshield must be removed before the Sound Level Meter can be calibrated NK 70 Random Incidence Corrector The NK 70 Random Incidence Corrector is designed to modify the response of the micro
41. hield UA 237 to protect the microphone capsule The instrument is not waterproof and should not be used in situations where moisture will form or condense on the microphone capsule or the instrument body If using the instrument outdoors use a suitable outdoor measurement kit which has been specifically designed to protect the instrument If the instrument becomes dusty wipe it down with a cloth that is lightly dampened with water or a mild detergent Do not use aromatic hydrocarbons chlorinated solvents or methanol based fluids when wiping down the meter cause severe damage to the membrane Physical damage to the microphone capsule Do not clean the microphone capsule Do not remove the microphone grill as this can is not covered by the instrument warranty CR 260A Series Sound Level Meters Section 6 Troubleshooting Page 37 This section contains information which may solve simple operational problems you may encounter If you are unable to solve the problem or experience any problems with the assembly or operation of the instrument contact Cirrus Research plc or your local representative for further assistance Basics Symptom Possible Cause Possible Remedy The instrument does not switch on The batteries are not fitted Fit new batteries and switch on The batteries are flat or very low Fit new batteries and switch on The batteries are not correctly fitted Remove the batteries and che
42. ical Broadband 21dB A Class 1 23dB A Class 2 1 1 Octave Band Filters 12dB Z 1kHz 1 1 Octave Band Available Measurements dB A Broadband Mode Lar Sound Level Not Stored dB A Fast Time Weighting Laeq Equivalent Continuous Sound Level dB A Larmax Maximum Sound Level dB A Fast Time Weighting Larmin Minimum Sound Level dB A Fast Time Weighting Lcpeak Peak Sound Pressure dB C Measurement Duration dB C Broadband Mode Lcr Sound Level Not Stored dB C Fast Time Weighting Lceq Equivalent Continuous Sound Level dB C Lcrmax Maximum Sound Level dB C Fast Time Weighting Lcrmin Minimum Sound Level dB C Fast Time Weighting Lcpeak Peak Sound Pressure dB C Measurement Duration 1 1 Octave Band Mode Selected Frequency Filtered Lzr Not stored dB Z Fast Time Weighting Filtered Lzeq Equivalent Sound Level Laeq Lceq amp Lzeq Equivalent Sound Level Measurement Duration CR 260A Series Sound Level Meters Page 44 Version also allows the following measurements to be made Broadband Mode Lxy Sound Level Not Stored Lxeq Equivalent Continuous Sound Level Lxymax Maximum Sound Level Lxymin Minimum Sound Level Lcpeak Peak Sound Level Lxe Lxteq Or Lxrreq Lxn 0 1 to 99 9 Five Simultaneous values Date amp Time of measurement Lxeq Short Leg Time History Where X dB A dB C or dB Z Frequency Weighting Y Fast F Slow S or Impulse I Time Weighting 1 1 Octave Band Mode
43. ies Sound Level Meters Page 34 Instrument CR 262 Computer clock Clear Memory Serial number A15831FB 01 03 2004 20 28 14 SA lose Firmware version 00 00 12 Instrument clock cet Calibration due 28 02 05 01 03 2004 20 28 01 Clearing the memory Press the Clear Memory button from the Configure Instrument screen The software will request confirmation that the memory is to be cleared This will delete all measurements from the instrument s memory Continue Please note that all measurements will be deleted from the instrument memory at this point Ensure that all measurements have been downloaded before clearing the memory Configuring the instrument Press the Advanced button from the Configure Instrument screen above to view the instrument configuration options The current configuration of the instrument will be displayed as shown in the example below Instrument CR 262 Computer clock Clear Memory Serial number 416831FB 01 03 2004 20 28 24 amp ose Firmware version 00 00 12 Instrument clock etic Calibration due 28 02 05 01 03 2004 20 28 11 Instrument Setup Filter Mode Broadband v Run Duration Manual s E Ee Time Weighting Fast v User Time 00 01 00 Environmental Monitoring Hearing Protector Surveys Freg Weighting A v Level Range 20 to 90 User Metric no change v Ln 1 vl x 1 Setup Notes These are the instrument s current settings New setup Delet
44. ing the CR 260A Series Sound Level Meter These instruments have been designed to be simple to use and to provide the functions and features needed from a modern Sound Level Meter This manual describes the procedure that should be followed to set up and operate the CR 260A Sound Level Meters as well as comprehensive technical information information on optional and a troubleshooting guide If you are a new user of Sound Level Meters or new to the CR 260A Series Sound Level Meters first read Section 1 Introduction to familiarise yourself with the features components and accessories supplied Then read Section 2 Getting Started for step by step instructions on how to use the instrument The different versions of the CR 260A Series are CR 261A Class 1 Broadband Only CR 262A Class 2 Broadband Only CR 263A Class 1 Broadband with 1 1 Octave Band Filters CR 264A Class 2 Broadband with 1 1 Octave Band Filters The CR 260A Sound Level Meters meet the requirements for Class 1 and Class 2 of IEC 61672 1 2002 standard for Class 1 Group X or Class 2 Group X Sound Level Meters as appropriate They also meet the requirements for Class 1 and Class 2 according to IEC 60651 and 60804 depending upon the version of the instrument Please refer to page 42 for full technical details of the CR 260A Sound Level Meters To meet the requirements of ANSI S1 4 for Random Incidence microphone response an NK 70 Random Incidence Adaptor should be used when making
45. instrument be calibrated by Cirrus Research plc or an official Cirrus Calibration Centre every year the warranty is effectively continuous to a maximum of 15 fifteen years from the date of purchase There will be a charge for this Traceable Calibration and the price is published in the Calibration Price List The customer is responsible for all shipping duty and other charges relating to the annual Traceable Calibration Where a repair service is conducted under warranty Cirrus Research plc will cover the shipping duty and other costs relating to the repair of the instrument Cirrus Research endeavors to ensure stocks of instrument components for the full fifteen year period but do not guarantee to do so as certain components do become obsolete or discontinued If a sub component becomes obsolete and stocks are depleted then Cirrus Research will endeavor to facilitate a repair but will not offer the same length warranty In the event of any dispute on the terms of the warranty Cirrus Research plc will accept pendulum arbitration by the United Kingdom Institute of Acoustics Ltd The warranty does not in any way reduce any legal right of the buyer or user of the sound level meter it is in addition to all legal rights determined by the European Union Cirrus Research plc reserves the right to amend or update these terms and conditions without prior notice Warranty Terms 2 5 May 2012 CR 260A Series Sound Level Meters Page 55 Cirrus R
46. l Meter is connected to the Software and that it is switched on If the Sound Level Meter is not switched on the software will not be able to detect the instrument The information provided in this manual is a brief summary of the functions available from the Deaf Defier3 software Please refer to the information provided with the software Downloading measurements To download measurements from the Sound Level Meter to the Deaf Defier3 software do one of the following Press the Instrument Download menu Deaf Defier Click the Download Measurement button Window Help fif B 66 ENB B e xl Connect to the instrument and download it s stored measurements The software will display the measurement catalogue in the instrument with each measurement identified by the measurement number type date time and measurement duration Select the measurements you wish to download No Type Date Time I Run Time I 10 Octave 17 02 2004 15 38 30 00 01 29 11 Octave 17 02 2004 15 47 43 00 00 30 12 Octave 17 02 2004 15 48 37 00 01 10 13 Octave 17 02 2004 15 53 20 00 00 03 14 Calibration 18 02 2004 11 31 21 15 Broadband 1810212004 11 35 35 00 01 49 16 Octave 1810212004 11 38 39 00 00 00 17 Octave 1810212004 11 38 43 00 00 16 18 Broadband 2610212004 16 41 47 00 00 53 19 Broadband 2610212004 16 43 24 00 00 07 20 Octave 2610212004 16 43 37 00 01 44 E 21 Octave 28 02 2004 19 40 00 00 21 21 v Download to Sel
47. nt does not stop as expected The Run Duration has been set to Manual Select a preset Run Duration Downloading Measurements Version Only Symptom Possible Cause Possible Remedy Measurements cannot be downloaded No measurements have been stored Repeat Measurement Instrument is not connected to PC Connect the USB cable between the Sound Level Meter and the PC Batteries are too low Replace batteries Section 7 Glossary 1 1 Octave Band Filters A Weighting Acoustic Calibrator Broadband C Weighting CE Marking dB A dB C dB Z Decibel dB DIN 45641 Fast Time Weighting IEC 60651 1979 IEC 60804 1984 IEC 61260 1995 IEC 61672 1 2003 Impulse Time Weighting Integrating Averaging Sound Level Meter La10 0 Lago 0 Lae Laeq t LaF LaFmax Larmin CR 260A Series Sound Level Meters Page 39 A division of the frequency range into bands the upper frequency limit of each band being twice the lower frequency limit A standard weighting of the audible frequencies designed to reflect the response of the human ear to noise An instrument that provides a reference noise source that is used to calibrate and check the performance of a Sound Level Meter Noise Measurements using parameters which include all the audible noise such as dB A and dB C A standard weighting of the audible frequencies used for the measurement of Peak Sound Pressure
48. osing the appropriate measurement mode See page 23 Standard Instruments The standard version of the CR 260A Series instruments can only store a single measurement When the instrument is switched on the display shows the last measurement When a new measurement is started this previous measurement is deleted and replaced by the new measurement information The following information is measured by a Standard instrument in Broadband Mode Frequency Maximum Minimum eee Weighting Displayed as value value Sound Level with Fast Time Aor C Lar or Lcr Larmax OF Larmin OF Lcemin VVeighting LcFmax Equivalent Continuous Sound Pressure Level with Aor C Laegt OF Lceqt E integration time t Sound Exposure Level SEL A or C Lac or Lce Peak Sound Pressure C Lcpeak E CR 260A Series Sound Level Meters Page 7 Version Instruments g The x Version of the CR 260A instruments can store up to 100 Measurements A which can be of any length up to a maximum of 99 hours per measurement With each measurement is stored a noise profile which consists of 1 second Leq Version Feature Samples with up to a maximum of 24 hours of Noise Profile being available Please refer to the Specifications on page 42 for full details of the available memory Function Frequency Displayed as Maximum Minimum Weighting value value A Lar LaFmax Larmin Sound Level vvith Fast Time 5 C Lcr LcrFmax LcFmin Weighting Z Lzr LzFmax
49. phone capsule from Free Field to Random Incidence in order to comply with the requirements of ANSI S1 4 PONE For instruments supplied for use outside of the USA this adaptor may not be supplied For further details please contact your local representative or Cirrus Research plc To fit the NK 70 Random Incidence Corrector push the corrector over the microphone grill Do not attempt to remove the microphone grill as this may cause damage to the capsule To calibrate the instrument fitted with the microphone capsule remove the NK 70 Corrector and follow the instructions supplied with the instrument Do Not attempt to calibrate the instrument with the NK 70 fitted CR 260A Series Sound Level Meters Page 19 Keypad Functions DMOOOOO O Power Switch On amp Off the Sound Level Meter Measurement Mode Select the measurement mode amp view the current measurement mode settings Start Starts a new measurement Resets the current measurement if the instrument is running Graph Switches between the Numerical and Graphical displays Stop Stops the current measurement Up Moves the Measurement Range up Resets the current measurement if the instrument is running Down Moves the Measurement Range down Resets the current measurement if the instrument is running CR 260A Series Sound Level Meters Page 20 Switching On Press the Power Button to switch on the Sound Level Meter
50. rts the measurement and the instrument runs for a longer period sweeping through the filter bands more than once CR 260A Series Sound Level Meters Page 25 40 TTT 21 110 OCTAVE BAND 125Hz RUN TIME t 00 00 05 Automatic Sweep Leq for each band 40 oe TT 110 B OCTAVE BAND 125Hz PS RUN TIME t 00 00 05 S N Automatic Sweep Leq for each band VA 7 A e aee ET ES T VA 40 Jo gt wli lili OCTAVE BAND 125Hz RUN TIME t 00 00 05 Automatic Sweep Leq for each band LAST MEASUREMENT LI 90 20 LAST MEASUREMENT Cumlative Leq for each band At the end of the measurement when the user presses Stop the instrument calculates and displayes the cumulative Leq for each filter band CR 260A Series Sound Level Meters Page 26 Making a measurement Please read this section very carefully It contains important information about making and storing measurements with the CR 260A Sound Level Meters Memory Functions The Version of the CR 260A Series Sound Level Meters can store up to 100 measurements and up to 24 hours of 1 second Short Leq Time History with Broadband measurements The Standard versions of the instrument can only store 1 Version Feature mea S u re me nt Understanding how measurements are stored The memory of a t Version of the CR 260A Series can store up to 100 measurements A measurement can be one of the following Classes
51. sh the calibrator onto the microphone capsule slowly twisting clockwise o Press the CAL button to start the calibration procedure Calibrating During the calibration the instrument will display the calibration Please Wait status 40 110 I If the calibration is successful the instrument will display the te ce oe calibration level Press the Start button to begin a new measurement or to return to the main screen PRESS START TO MEASURE If the calibration is not successful the instrument will display an error message These are shown below 40 a 110 B ER The calibration level is below the set level Check that the Not calibrated Calibrator is switched on and that it is connected correctly to the Sound Level Meter PRESS START TO MEASURE 40 A 110 I Level Too High The calibration level is above the set level Check that the Not Calibrated Calibrator is set to the correct level PRESS START TO MEASURE 40 EMEN 110 E The calibration level is unstable This may be caused by high Level Unstable E hi Not Calibrated background noise levels Move to a quieter location and retry the calibration PRESS START TO MEASURE making a measurement the current measurement will be stopped and the information discarded The measurement information will not be stored in the instrument memory T Please note that if the CAL button is pushed when
52. t measurement made Press the Graph Key to cycle between the numerical display and the graphical display of the last measurement Cirrus Research plc CR 262A v1 00 1 1 Octave Band Mode Broadband Mode CR 264A amp CR 263A Only LAST MEASUREMENT a Hz Leq dBZ kHz Leg dBz El L g HH SEL dBA 31 5 50 2 1 80 6 C C CI 4 62 5 50 3 2 74 7 95 125 554 4 60 3 zu LI 250 60 5 8 55 5 Peak dBC Max dBA F 300 72 1 ie deu 104 9 78 6 A 76 5 C 80 5 Z 94 5 RUN TIME t 01 00 14 LAST MEASUREMENT LAST MEASUREMENT WU LAST MEASUREMENT LI ae dBA ug RUN TIME t 01 00 14 LAST MEASUREMENT 2 Calibration Attach the Acoustic Calibrator to the Sound Level Meter and switch to the 94dB level setting Press the Cal key to start the calibration procedure When the calibration is complete the display will change to show the calibration level Remove the Acoustic Calibrator switch off the calibrator and store CR 260A Series Sound Level Meters Page 10 Attaching the Calibrator Gently push and twist the calibrator clockwise Calibrating Please Wait 40 i s s 1101 Calibrated to 93 7dB PRESS START TO MEASURE CR 260A Series Sound Level Meters Page 11 3 Measurement Range 40 Jo Leq dBA LF dBA The Sound Level Meter should be Go 0 Q d set to the correct range before Basic dBG Men measurements are made 104 9 78 6 RUN TIME t 01 00 14 Press the
53. t 1 Broadband Z Lzeqt 1 Broadband T Version Instruments Frequency Stored Function Weighting Displayed as Measurement Applies to Sound Level with Fast Time Z L No 1 1 Octave Weighting Bands Z Lzeqt Yes l Equivalent Continuous Sound Pressure Level with A Laeqt Yes Broadband integration time t C Lceat Yes Broadband Z Lzeqt Yes Broadband The 1 1 Octave Band Filters cover the follovving frequency bands 31 5Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2 kHz 4kHz 8kHz 16kHz Options amp Accessories A range of options and accessories are available for the CR 260A Series which can enhance the performance of your instrument For full details please contact Cirrus Research plc or your local representative The most commonly used accessories are listed below CR 514 Class 2 Acoustic Calibrator CR 515 Class 1 Acoustic Calibrator UA 237 Windshield CK 250 Carrying Case CP 65 Carrying Pouch for Sound Level Meter CR 261A amp CR 263A Only CT 1 Tripod CM 270 1 Preamplifier Tripod Mount ZL 202 2m Microphone Extension Cable ZL 205 5m Microphone Extension Cable ZL 210 10m Microphone Extension Cable ZL 225 25m Microphone Extension Cable ZL 100 USB Data Cable SW DD3 Deaf Defier3 Software CR 260A Series Sound Level Meters Page 9 Section 2 Getting Started Quick Start 1 Switch On Press the Power button to switch on the Sound Level Meter The instrument will display the startup screen and then will display the las
54. tg F si Run Time Manual Run Time Manual Peak dBC Max dBA F Status Stopped Status Stopped 104 9 78 6 PRESS START TO MEASURE PRESS START TO MEASURE RUN TIME t 01 00 14 CR 264A amp CR 263A Instruments The CR 264A and CR 263A instruments provide Broadband measurements in either dB A or dB C amp 1 1 Octave Band Filter Measurements Press the Mode Key to switch between dB A and dB C Broadband modes or 1 1 Octave Band Mode ama mm MODE AND SETTINGS MODE AND SETTINGS MODE AND SETTINGS LAST MEASUREMENT I Broadband Mode Broadband Mode 1 1 Octave Mode beg dBA Min dBA F Freq Wtg Z C 38 6 Freq Wtg A Freq Wtg C Time Wtg F I Time Wtg F Time Wtg F Run Time Manual Run Time Manual Run Time Manual Status Stopped Peak dBC Max dBA F Status Stopped Status Stopped 104 9 78 6 PRESS START TO MEASURE PRESS START TO MEASURE PRESS START TO MEASURE RUN TIME t 01 00 14 Ic NN C CR 260A Series Sound Level Meters Page 13 5 Start Measurement 1 1 Octave Band Mode Press the Start button to Broadband Mode CR 264A amp CR 263A Only start a measurement in the current mode 40 mum 110 Il 40 X Jo Leq dBA LF dBA Leq dBZ LF dBZ o Peak dBC Max dBA F h h 104 9 78 6 OCTAVE BAND 250Hz Press the Graph button to RUN TIME t 01 00 14 RUN TIME t 00 00 05 view the graphical display 40 mem 01 0 0 01110 40 1110 f Leq dBA S E
55. th A Frequency weighting and Fast Time weighting The minimum Sound level with A Frequency weighting and Fast Time weighting LarTeq Lai Latmax Latmin Las Lasmax Lasmin Lce Lceq t Ler LcFmax Ler Lcimax Lcpeak Lcs Lcsmax Lep d Leq Lieqt Ln Lze Lzeq t LzF LzFmax Lz Lzimax Lzs CR 260A Series Sound Level Meters Page 40 Takt maximal sound level as defined by DIN 45641 Sound level with A Frequency weighting and Impulse Time weighting The maximum Sound level with A Frequency weighting and Impulse Time weighting The minimum Sound level with A Frequency weighting and Impulse Time weighting Sound level with A Frequency weighting and Slow Time weighting The maximum Sound level with A Frequency weighting and Slow Time weighting The minimum Sound level with A Frequency weighting and Slow Time weighting Sound Exposure Level SEL with C frequency weighting Equivalent continuous sound pressure level A measure of the average sound pressure level during a period of time t in dB with C weighting Sound level with C Frequency weighting and Fast Time weighting The maximum Sound level with C Frequency weighting and Fast Time weighting Sound level with C Frequency weighting and Impulse Time weighting The maximum Sound level with C Frequency weighting and Impulse Time weighting Peak Sound pressure level with C frequency weighting Sound level with
56. the instrument is running and To Remove the calibrator gently pull the calibrator whilst twisting the calibrator clockwise This will help to ensure that the microphone capsule does not become unscrewed from the instrument For more information refer to Appendix 4 Acoustic Calibrators CR 260A Series Sound Level Meters Page 22 Changing the Calibration Level The calibration level of the Sound Level Meter can be adjusted from the default level of 93 7dB To change the calibration level press and hold the Cal key for more than 2 seconds Set cal level A 93 7 V then press START Use the Up and Down arrows to change the level Press START to accept the new level and to return to the main operation of the Sound Level Meter Setting the measurement range ia One of the most important features of a Sound Level Meter is the measurement a range If the measurement range is set too high the instrument may not be able to record low levels If the measurement range is set too low high noise levels will KE overload the instrument and make the measurement invalid Therefore it is vital that the correct measurement range is chosen for the noise to be recorded To set the measurement range press the Start key The instrument will start a measurement 40 a I 110 ff Leq dBA LF dBA oo H 5549 The instrument is running The measurement range in this Peak dBC ene example is 40dB to 110dB as shown at the top of the s
57. uration Version Only e The user Resets the current measurement Resetting the measurement If any of the following keys are pressed during a measurement the current measurement will be cancelled and the measurement restarted Up The measurement range will be moved up 1 range The current measurement will be reset and a new measurement started The current measurement information will be discarded Down The measurement range will be moved down 1 range The current measurement will be reset and a new measurement started The current measurement information will be discarded Start Resets the current measurement and starts a new measurement The current measurement information will be discarded CR 260A Series Sound Level Meters Page 29 Stopping amp reviewing the measurement Press the Stop button to finish the measurement When the measurement is complete the instrument will display the measurement data for the last measurement Broadband Mode 1 1 Octave Band Mode LAST MEASUREMENT I Hz Leq dBZ kHz Leq dBz I Leq dBA SEL dBA 31 5 50 2 1 80 6 C NC CI 62 5 50 3 2 74 7 95 125 55 4 4 60 3 J JU 250 60 5 8 55 5 Peak dBC Max dBA F s00 72 1 ib s 104 9 78 6 A 76 5 C 80 5 Z 94 5 RUN TIME t 01 00 14 LAST MEASUREMENT Press the Graph key to switch between the Numerical and Graphical measurement information LAST MEASUREMENT Leq dBA 110 40 t RUN TIME t 01 00 14 LAST MEASUREMENT 90 20

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