User manual for optimus sound level meters
Contents
1. Optimus Fujitsu Printer cable 18 way to multiway 1m e ZL 183 Optimus all purpose cable 18 way to tinned ends 2m e 7L 184 Optimus Hirose HR30 Male to Male SR30 1m e ZL 185 Optimus AC output cable 18 way to Phono 1m e ZL 186 Optimus USB Cable with Ferrite USB A to USB B 1 8m e ZL 187 Optimus Hirose Male to 12 Way Binder Chassis Socket 1m e ZL 188 Optimus Male Binder to Hirose Female 10m Page 39 optimus sound level meter user manual Acoustic Calibrator Information This chapter refers to the use of a Cirrus Research plc CR 514 or CR 515 Acoustic Calibrator Power Button Switching on the Calibrator Press the Power Button on the end of the CR 514 ic Calib Calibrator to switch the unit on The Cirrus Research ple Indicator will illuminate to show that the unit is operating The calibrator will e automatically switch off after 5 minutes to A 2 lt o preserve battery power To switch off the calibrator manually press Power inaicakar 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 ca2. Compatible with Microsoft Windows XP Vista Windows 7 amp Windows 8 32bit amp 64bit Page 31 optimus sound level meter user manual Views Sound Level View e Sound Level Lxy x A C Z y F S e Maximum Sound Level LxyMax where x A C Z y F S e Minimum Sound Level LxyMin where x A C Z y F S e Measurement Run Time Leq View e Lxeq where x A C Z e LCPeak LZPeak e LCeq LAeq e LxE where x A C Z e LAeq Also known as LAleg t replaces LCeq LAeq when Impulse Time Weighting is selected e Graphical Short LAeg LCPeak e Measurement Run Time e Taktmaximal levels and integrated levels and 3 and 5 seconds Fast and Impulse time weighted 1 1 Octave Band View e Graphical display of L real time octave bands with the highest value for each band updated every 1 16 seconds from 32Hz to 16kHz 16Hz 1 1 Octave Band stored For display in the NoiseTools software e Graphical display of cumulative Leq for each octave band e Graphical display of cumulative LAeq for each octave band e Numeric display of Leq 1s real time octave bands updated every 1 second e Numeric display of cumulative Leq for each octave band e Numeric display of cumulative LAeq for each octave band e Measurement Run Time 1 3 Octave Band View e Graphical display of L real time 1 3 octave bands with the highest value for each band updated every 1 16 second from 12 5Hz to 20KHz 6 3Hz 8Hz and 10Hz 1 3 Octave Bands store
3. amp NC Curves Other documents may also be available for the optimus sound level meters Please visit the Cirrus Research website for the latest information Page 29 optimus sound level meter user manual Appendices IEC 61672 test data Technical data for IEC 61672 testing is contained in the Part B document which can be downloaded from the Cirrus Research plc website Visit www cirrusresearch co uk library optimus to download the latest information This chapter of the manual contains the overall specifications for the optimus yellow CR 150 optimus red CR 160 optimus green CR 170 and optimus purple CR 190 sound level meters Common Specifications Applicable Standards IEC 61672 1 2002 Class 1 or Class 2 Group X CR 151 8 CR 152 All versions CR 162 amp CR 161 All versions CR 171 8 CR 172 All versions CR 191BE amp CR 193BE IEC 60651 2001 Type 1 or Type 2 CR 151 amp CR 152 All versions CR 162 amp CR 161 All versions CR 171 8 CR 172 All versions IEC 60804 2000 Type 1 or Type 2 CR 162 amp CR 161 All versions CR 171 8 CR 172 All versions IEC 61252 1993 Personal Sound Exposure Meters CR 162 amp CR 161 All versions CR 171 amp CR 172 All versions ANSI 51 4 1983 R2006 CR 162 amp CR 161 All versions CR 171 8 CR 172 All versions ANSI 51 43 1997 R2007 CR 162 amp CR 161 All versions CR 171 CR 172 All versions ANSI 1 25 1991 CR 162 amp CR 161 All versions CR 171 amp CR 172 All versions 1
4. lt 85dB e LASMax e LA95 e Page 2 e LAeg 60min o Indicated in Red where LAeq 60min gt 100dB o Indicated in White where LAeq 60min lt 100dB e LASMax e LA95 Page 34 optimus sound level meter user manual Stored Measurements Sound Level View Overall LxyMax where x A C Z y F S 9 items Time History LxyMax where x A C y F S 6 items Time History LxyMin where x A C y F S l 6 items Measurement Run Time Time amp Date of Measurement Start Time History data rate is user configurable in the global settings Leq View Overall LCPeak LZPeak LAeq LCeq LZeq 5 items Time History LAeq LCeq LZeq Time History LCPeak LZPeak LAPeak Time History LAeql also known as LAleq t Time History data rate is user configurable in the global settings Measurement Run Time Time amp Date of Measurement Start Dose View Overall LAeq2 LAeq3 Lavg stored TWA Dose amp Est Dose also available Time History LAeq2 LAeq3 Time History data rate is user configurable in the global settings Measurement Run Time Time amp Date of Measurement Start Integrator 1 values are stored in the Leq module 1 1 Octave Band View Overall Leq for each octave band Overall LAeq for each octave band NR amp NC values CR 160 D version CR 170 A B amp C versions Time History Leq for each octave band 10 items stored at the Global data rate minimum duration of 1 16 seconds Measuremen
5. 1 Octave Band Filters to IEC 61260 amp ANSI 1 11 2004 CR 161C amp CR 162C CR 161D amp CR 162D CR 171A B amp CR CR 172A BAC CR 193BE 1 3 Octave Band Filters to IEC 61260 amp ANSI 1 11 2004 CR 171A amp CR 172A CR 171B amp CR 172B CR 171C amp CR 172C CR 193BE Microphone Class 1 Instruments MK 224 pre polarized Free field 1 2 Condenser Class 2 Instruments MK 216 pre polarized Free field1 2 Condenser Page 30 optimus sound level meter user manual Microphone Preamplifier Total Measurement Range Noise Floor Frequency Weightings Time Weightings Display Display of Memory AuditStore MV 200 Removable Preamplifier for Class 1 amp Class 2 instruments 20dB to 140dB RMS Single Range lt 18dB A Class 1 lt 21dB A Class 2 RMS A C amp Z Measured Simultaneously Peak A C amp Z Measured Simultaneously Fast Slow amp Impulse Measured Simultaneously High resolution OLED Organic Light Emitting Diode display with ambient light sensor amp illuminated keypad Measured parameters Recalled Measurement Parameters Data Logging Versions Battery Level amp External Power Connection Overload amp Under Range Time amp Frequency Weighting Elapsed Measurement Time Instrument status 4GB as standard Data Logging Versions 32GB factory fitted option For each measurement the following data is stored into an independent non volatile memory for use with the AuditStore Function
6. Start Time Duration LAFMax LAeq LCPeak L10 L90 Overload Calibration data Diagnostic information Time History Data Rates Global settings VoiceTag Audio Recording Size Weight Batteries Battery life External Power Tripod Mount Connections Case Material Environmental Electromagnetic performance Language options Software Support 10ms 62 5ms 125ms 250ms 1 2 sec 1 sec 2 sec User selectable User selectable recording of voice notes before each measurement for download to NoiseTools software Data Logging Versions 30 seconds per recording with audio files downloaded with noise measurement information 283mm x 65mm x 30mm 300gms 100z 4 x AA Alkaline Typically 12 hours with Alkaline Batteries Typically 20 hours with Lithium AA Non Rechargeable Batteries Battery life is dependent upon the battery type and quality and screen brightness 5v via USB Socket from PC or Power Supply 5v 15v via MultilO socket 1 4 Whitworth socket USB Type B to PC Multi pin IO for external power 3 5mm Stereo Jack for AC output High Impact ABS PC with soft touch back amp keypad Temperature Operating 10 C to 50 C Storage 20 C to 60 C Humidity Up to 95 RH Non Condensing IEC 61672 1 2002 IEC 61672 2 2003 Except where modified by EN 61000 6 1 2007 amp EN 61000 6 1 2007 English French German Spanish and Italian NoiseTools Download Configuration amp Analysis software as standard
7. The optimus sound level meters can be used with a range of cables The standard cables are listed below Page 38 optimus sound level meter user manual Microphone Extension Cables e ZL 202 2m Microphone Extension Cable e 7L 205 5m Microphone Extension Cable e 7L 210 10m Microphone Extension Cable e 7L 215 15m Microphone Extension Cable e 7L 220 20m Microphone Extension Cable e ZL 225 25m Microphone Extension Cable e ZL 230 30m Microphone Extension Cable e 7L 250 50m Microphone Extension Cable e 7L 260 60m Microphone Extension Cable e 7L 2100 100m Microphone Extension Cable e ZL 232 5m Flat Microphone Extension Cable Input amp Output Cables e ZL 100 1m USB Cable e 7ZL 171 Optimus power input cable 2 1mm Power Jack 2m e 7L 172 Optimus Printer Cable 18 way to 6 way RJ12 1m e 7ZL 173 Optimus DPU 414 Printer Cable 18 way to 9 way D male 1m e ZL 174 Optimus AC amp DC Output 18 way to 2 x Phono 1m e ZL 175 Optimus PC cable 18 way to RS232 9 pin D female 1m e ZL 176 Optimus 12v Battery pack cable 2m to tinned ends with inline Fuse e ZL 177 Optimus AC output cable 3 5mm Mono to 3 5mm Stereo Jack 2m e ZL 179 Optimus cable for ZE 910 Isolator 18 way to tinned ends 1m e ZL 180 Optimus Modem cable 18 way to RS232 9 pin D male with 12V Power Input 2 1mm jack 1m e 7L 181 Optimus PC cable 18 way to RS232 9 pin D female with 12V Power Input 2 1mm jack 1m e 7L 182
8. band is highlighted in blue on both the graphical and numerical pages This can be set to the Cirrus Improved Method default setting or the ISO 1996 method in NoiseTools Page 24 optimus sound level meter user manual For more information please see Technical Note 32 Tonal noise detection with the optimus sound level meters available for download from the Cirrus Research website at www cirrusresearch co uk library optimus Ln View The Ln view shows the statistical Ln values calculated during the measurement The First seven Ln values are set by default to commonly used values and 8 14 are definable in NoiseTools Some optimus models have a second set which are also 1 7 default 8 14 user definable The source data type for the second Ln set is also configurable in NoiseTools Dose View The Dose View gives you a number of different Functions depending upon the configuration of the Quick Settings For the UK option this View gives you Leq LEP d Dose and Estimated Dose along with the Projected Exposure Calculator For the EU option this View gives you Leq LEX 8 Dose and Estimated Dose along with the Projected Exposure Calculator For all other options the Lavg TWA Dose and Estimated Dose for two integrators in addition to ISO EU will be shown according to the setting you have chosen Two custom integrators can also be used configured in NoiseTools When chosen they will be shown in addition to ISO E
9. duration which can be changed in NoiseTools The Time History display and Analog bar turn blue when audio recording is running and revert to green when it is stopped Starting and stopping audio recording during a measurement does not affect the noise measurement data being recorded Please note VoiceTags are recorded BEFORE the measurement starts and are for spoken notes only not for analysis of recorded sounds Page 20 optimus sound level meter user manual Timers The single and repeat timers allow you to make precisely timed measurements over pre set or custom defined durations which are set on the instrument using the Storage Options Menu see next chapter The repeat timer allows measurements to be stopped and started automatically over a long period of time The optimus can still be stopped and started manually when the repeat timer is active The repeat timer is synchronised to the real time clock so if you choose a 30 minute duration the measurement will begin on the hour or at 30 minutes past When the measurement ends a new one will begin and last for the next 30 minute interval If the optimus is paused when an automatic timer begins the new timed measurement will also be paused Please note after 5 minutes in pause the optimus will restart Back Erase Pause Pause The optimus sound level meters provide Pause and Back Erase function which can be used during a measurement When the Pause function is enabled
10. time and in Review mode it shows the measurement number and the total number of measurements stored Overload and Under Range Indication Overload is indicated by the word overload and Under Range is indicated by the word under range in the chosen language on the display On the Sound Level View and Leq View the indicators are situated beneath and to the left of the large number When a measurement is not in progress the indicator is shown for at least 1 second so that very short transient overload or under range conditions are visible to the operator When a measurement is in progress the overload indicator stays on until the measurement is stopped or reset In some circumstances the overload and under range indicators will be shown simultaneously In this case the text will be abbreviated to save space Note that if any displayed decibel value on the Sound Level View or Leq View is below 14 0dB the value will be replaced by dashes These levels are typically below the noise floor of the microphone capsule and so will only be encountered during electrical testing Bluescreen Under rare circumstances when the optimus encounters a condition it cannot recover from a bluescreen error message will show with an error code IF this should happen to your optimus please make a note of the code so the engineers at Cirrus Research Page 19 optimus sound level meter user manual can diagnose your problem ac
11. ADGE optimus the NoiseTools Logo and the Noise Hub Logo are either registered trademarks or trademarks of Cirrus Research plc in the United Kingdom and or other countries Microsoft and Windows are registered trademarks of Microsoft Inc All other trademarks acknowledged Updates In the interests of continuous product improvement Cirrus Research plc reserves the right to make changes to product specifications without notice To understand the latest updates that have been implemented into this product and to download the most current version of this user manual visit our web site at www cirrusresearch co uk Issue 2 2 February 2013 optimus 12 13 22EN Page 4 optimus sound level meter user manual o O heron Peer ete once ene Re eae AEN SN Ree Cen Ena Mem ie ety ee ek eee ae 8 PiPSE SG cSt ES O A adalat T 10 hserting the batteriesicradi alas 12 Calibration sssaueehsec shanti A a Aa a a a e a a e E 13 Making a Mesure MEL da 15 Operations in More de eso to 16 NoliseTo0 sea ice tado dial tees 16 Keypad and Control E A OD 16 COMO a aia 17 AAN O cath ee ah O OS WEE e a 18 Display Seca chad e hada saad tied ea tage ee dacs A aaa ated cee Sea tags deed aisha A AE TORA ted nested tae 18 AUdiO Record stilo illa ltd io 20 A RAN 21 Back Eras PUSE di A dt its 21 MEMON Sars ant Bonita Yee iain etree O E E haat aie ein aaah 22 Restoreskactory Settings ta e eee ee a a o AA ict a eae A es et ease 22 Windshield ote il iaa 22 Getting to kno
12. 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 93 7dB Page 43 optimus sound level meter user manual Cirrus Research ANS OB Us dedicated to noise measurement to noise measurement Manufacturer Cirrus Research ple Acoustic House Bridlington Road Hunmanby North Yorkshire YO14 OPH United Kingdom Telephone 44 1723 891655 CE Certificate of Conformity Cirrus Research plc Hunmanby UK Equipment Description The following equipment manufactured after 1st January 2012 CR 151 Sound Level Meter A 4 B Versions CR 152 Sound Level Meter A 4 B Versions CR 161 Sound Level Meter A B C amp D Versions CR 162 Sound Level Meter A B C amp D Versions CR 171 Sound Level Meter 0 A B 4 C Versions CR 172 Sound Level Meter 0 A B 4 C Versions CR 19x Sound Level Meter All versions 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 Sound Level Meters IEC 61672 1 2002 IEC 61672 2 2003 Acoustic Calibrators IEC 60942 2003 Except where modified by EN 61000 6 1 2007 amp EN 61000 6 1 2007 EMC Generic emission standard for residential commercial and light industrial environments EN 61000 6 1 2001 E
13. Cirrus Research will endeavour to facilitate a repair but will not offer the same length guarantee 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 Page 45 optimus sound level meter user manual Index 1 1 Octave Band 24 1 3 Octave Band 24 36 AC OUR aco ft E 27 AC OUtpUt A 37 AC Output Cables 38 Advanced options 27 ANSI S1 isis cout 30 ANSI Se Sects tates 30 ANSI Sit as 30 ANSI S AS eee seit dda 30 Audio Quality 27 Audio Recording 20 Audio Triggers 27 AuditStore 31 back buffer 20 Back Erase 21 Background Noise 41 FI 12 Batteries 31 battery COVE s s s 12 Battery indicator 20 A Nadie chad 24 Cables ateos Das 38 Callas 13 CE 44 Clear Memory 26 Ts etic 28 Connections 31 CONNECIONS a anni 17 Criterion Leve l 37 date time formats 27 DC OUtpUt andas 38 DC Output Cables 38 Dilataci n 18 SAA 33 35 Dose i
14. Lyoner Strasse 44 48 D 60528 Frankfurt Germany Tel 49 0 69 95932047 Fax 49 0 69 95932049 E mail vertrieb cirrusresearch de Website www cirrusresearch de France Cirrus France Ltd 40 Bis Avenue Gabriel Faur 09500 Mirepoix France Tel 33 5 61 67 40 01 Fax 33 5 61 67 40 56 Email sales cirrusresearch fr Web www cirrusresearch fr Cirrus Environmental Unit 2 Bridlington Road Industrial Estate Hunmanby North Yorkshire YO14 OPH United Kingdom Tel 44 0 1723 891722 Email sales cirrus environmental com Web www cirrus environmental com Cirrus Spain Cirrus Research SL Travesera de Gracia 62 4 7 Barcelona Espa a Email info cirrusresearch es Web www cirrusresearch es Page 47
15. MC Generic immunity standard for residential commercial and light industrial environments St S O Rourke Director Dated 1st January 2012 Page 44 optimus sound level meter user manual Warranty 1 This document is a summary of the full warranty document and explains the Cirrus Research ple 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 manufactured by Cirrus Research plc after 1st September 2011 The warranty covers all Faults on the instrument resulting from manufacturing defects for the period defined in paragraph 5 below including minor accidental damage except to the microphone The warranty excludes damage to the instrument s caused by the use of any accessories or components not specified or recommended by Cirrus Research plc The 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 Any rechargeable battery only has the battery manufacturer s one year warranty however there will be a reduced charge for replacing rechargeable batteries during the annual Routine Verification process Commonly referre
16. U Moving Average View The Moving Average View is available on the CR 191BE amp CR 193BE instruments only The Moving Average View shows a 15 minute and 60 minute moving average LAeq along with LASmax and LA95 values The LAeq values are highlighted in colours under certain conditions See page 25 for details of the trigger levels High Level Noise Measurement The optimus sound level meters can be used to measure high noise levels up to 170dB with the use of the optional MV 200EH High Level Noise Measurement Option Page 25 optimus sound level meter user manual This consists of a microphone capsule attenuator and preamplifier supplied as a complete unit Switch off the instrument before fitting the MV 200EH Once the unit is fitted calibrate the sound level meter as standard The optimus will detect the MV 200EH and adjust the measurement span to 50 170dB IF the standard microphone and preamplifier are replaced re calibrate the optimus to return the measurement span to the standard 20 140dB range Menus In the following Menus different options can be chosen on the optimus To activate a Function press the mark soft key to put a tick in the square box You can now use the up and down soft keys to select your setting and use the OK soft key to confirm it In the menu pages the Status Bar will display information about your current settings and the option you have chosen The following chapter shows the
17. a ridad 33 Electrical Outputs 37 EMC ednas a 44 Environmental 31 Est Dose ccc 33 EU37 External Power 31 Fast a do 27 Free Field Correction 43 Page 46 Frequency Weightings 31 High Level Noise Measurement 25 Menos aos 24 IEC 0065122001 eu wenn 30 IEC 60804 2000 30 ECOS ZO Fite dos 30 IEC O72 rt 30 IEC 61672 test data 30 IEC 61672 1 2002 30 MpUl ru starts 27 Information Bar 19 Input amp Output Cables 39 ISO 1996 2 2007 24 IO A 16 tetonas maat 24 LA andadas 32 E A 24 32 LA aio tania 33 PA tan 24 LAO odia 32 Language 27 31 KET E A E 32 PER accede 32 E sce edd cartes atta ee 35 E 33 Ln 36 Low Baltic 20 D E 32 EA 32 Ea AAA 32 MaxiMUM cccecceeeees 32 Measurement Display 19 MOMO Via dns 22 31 Microphone 00 30 Microphone Extension Ca blessa iinnat 39 MINIMUM tada 32 MSHA c ccccceeeteeees 37 Navigation Bar 19 N A E AEE 24 Noise Floor 31 NoiseToolS 16 ret tao do 24 OSHA A 37 OSHA asas 28 OverlOad oooccoccconcco o 19 PU 21 27 pres placas 11 Quick Settings 28 QUICK Startawends cate 3 A 31 Repeat Timer 28 Resta Ei 26 Restore Factory Settings oa 22 Review Stored data 26 Screen Brightness 27 Screen SAVE n s 18 SE ERE T 24 SEE ClOCK annii 28 Se
18. affected by any changes made in the instrument e The Common Specifications section on page 30 defines which standards relate to the different functions available in the instruments Additional approvals and certifications may apply to the instruments and these will be listed in the Appendices e More detailed explanations of the audio recording templates tonal noise detection and the repeat measurement timers are available to download from the Cirrus website at www cirrusresearch co uk library optimus e Quick Start Guides for the optimus sound level meters can be downloaded from the Cirrus website at www cirrusresearch co uk library optimus Page 3 optimus sound level meter user manual Copyright Copyright Cirrus Research plc 2010 2013 All rights reserved You may re use this document publication not including the Cirrus Research plc logo and other product logos free of charge in any format for research private study or internal circulation within an organisation You must re use it accurately and not use it in a misleading context You must not modify text images or illustrations in any way The material must be acknowledged as Cirrus Research plc copyright and you must give the title of the source document publication Where any third party copyright material is identified you will need to obtain permission from the copyright holders concerned Trademarks Cirrus Research plc the Cirrus Research plc Logo doseBadge DOSEB
19. and update your instrument if and when the time arises This means that your instrument will meet your current and future needs no matter what you need to measure Audio Recording during measurements The optimus green instruments can record and store audio data the actual sounds heard by the microphone during a measurement This data can be downloaded along with the noise measurements for analysis and review and can be used to identify the source of the noise Audio recordings can be started either manually or automatically using a set of triggering rules Page 9 optimus sound level meter user manual First Use Your optimus sound level meter has been shipped in reusable packaging that should be retained for safe shipment when returning the instrument for calibration or servicing All optimus meters come with the following standard accessories e MV 200 Microphone Preamplifier e Microphone capsule attached to the preamplifier e Wrist e 4x AA batteries e User Manual e Product CD with NoiseTools software and documentation e Windshield You may have other accessories depending on your package Please check for damage or missing items before using your optimus All optimus instruments are shipped with the removable preamplifier separated from the body When connecting the preamplifier please take great care to only turn the locking ring at the base Twisting the preamplifier body is likely to cause serious dama
20. curate as possible Calibration should also be carried out at the end of a measurement session to make sure that nothing has happened to the instrument during the session To calibrate your optimus carefully push the microphone 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 Ensure that the small bleed hole next to the microphone cavity on the calibrator is not blocked as this could cause damage to the microphone Page 13 optimus sound level meter user manual Take care not to use a twisting motion when pushing the microphone into the calibrator as this is likely to cause damage to the preamplifier as described earlier in this chapter Press the on button on the end of the calibrator Press the calibrate button on the optimus The instrument will measure the sound level from the acoustic calibrator to determine if it is within the required tolerance and levels The calibration level must be stable to within 0 075dB for 5 consecutive seconds for the calibration to be successful When the calibration is completed the optimus will display the level along with the correction or adjustment made The optimus is preset with the correction values needed for Cirrus Research microphone capsules so no manual adjustment is required The calibration level you should expect is 93 7dB Refer to page 40 for detailed operating information fo
21. curately After writing down the code pressing the right key will clear the screen and the instrument can be used as normal Battery indicator The status of the batteries is shown in the Battery Level Indicator When the batteries need replacing the indicator will turn red Low Battery Indication while switching on IF the start up screen flashes quickly when you press the on button the batteries have insufficient power to start and need changing Audio Recording Audio recording can be started automatically using the Audio Triggers or manually using the Audio soft key This starts the optimus recording raw WAV data at a quality which can be set in the Menu Standard or Studio Details of the Audio Triggers can be found in Technical Note 28 Audio Recording with the optimus green sound level meters Please refer to the Cirrus Research plc website at www cirrusresearch co uk library optimus Pressing the audio key again stops the recording There is no maximum duration of an audio recording set by default but it can be changed in NoiseTools and the parameters for the Audio Triggers can be configured in NoiseTools The audio recording includes a 10 second back buffer on the Standard quality setting When triggering a recording manually it s very difficult to record the beginning of a sound that catches your attention The back buffer will cover the time it takes you to respond and press record 10 seconds is the default
22. d for display in NoiseTools e Graphical display of cumulative Leq and LAeq for each band Page 32 optimus sound level meter user manual e Graphical display of cumulative LAeq for each band e Numeric display of Leq 1s real time bands updated every 1 second e Numeric display of cumulative Leq and LAeq for each band e LeqLF and LAeqLF 20Hz to 200Hz e Instruments with Tone Detection Capability display tonal bands in blue Ln View Measures and stores statistical values during measurements Provides 14 Ln values to 0 1dB resolution e 11 0 e 190 0 e 199 0 Lns 7 14 are user defined turned off by default Ln values are calculated using 1 16 second L samples by default Sampling rate time weighting and frequency weighting can be changed in NoiseTools Instruments with the Statistical Levels x 2 Capability provide a second set of 14 Ln values which can be configured within NoiseTools using independent sampling rate time weighting and frequency weighting Dose View Integrator 1 Integrator 2 Integrator 3 Run Time Run Time Run Time Leq Leq2 Leq3 LEP d Lex TWA TWA Dose Dose Dose Est Dose Est Dose Est Dose Configuration Configuration Configuration Measurement Run Time Page 33 optimus sound level meter user manual Moving Average View e Page 1 e LAeg 15min o Indicated in Red where LAeqg 15min gt 95dB o Indicated in Yellow where LAeq 15min gt 85 dB o Indicated in White where LAeq 15min
23. d to as Annual Recalibration No warranty is offered for used equipment unless a special arrangement is made and a written confirmation of the warranty is given by Cirrus Research plc On completion of the routine verification by Cirrus Research plc the instrument will automatically be given an additional free one year warranty There will be a charge for this routine verification and the price is published in the Service Price List The customer is responsible for all shipping duty and other charges relating to the routine servicing and calibration of the instruments Where the instrument is deemed to be faulty due to manufacturing defects Cirrus Research plc will cover the shipping duty and other charges relating to the repair of the instrument Cirrus Research plc reserves the right to decline an instrument under the warranty where there is clear evidence of damage or where no fault is found In these cases the customer will be liable for any shipping duties or charges lt Follows that should the instrument be routinely verified by Cirrus Research plc every year the warranty is effectively continuous to a maximum of 15 fifteen years from the date of purchase Cirrus Research endeavours 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
24. either partition is full the optimus will overwrite the oldest data in that partition To clear the memory and permanently delete all stored data choose the Clear Memory Menu page and follow the instructions on screen Before permanently erasing the data you will be asked to press OK to confirm Restore Factory Settings This is in the Advanced Options Menu and restores the optimus to the default options For all user definable settings in the Menus and clears the calibration offset For settings such as language where there is no default the optimus will return to the option it was shipped with Follow the instructions on the screeen and press OK to confirm This does not delete any stored measurements Windshield The optimus can be used with a UA 237 90mm foam windshield which will reduce the noise levels generated by air turbulence over the microphone capsule It can also help protect the microphone capsule from dust and fluids which can affect the performance of the instrument Page 22 optimus sound level meter user manual Getting to know your optimus features and capabilities The optimus instruments are designed around a modular structure that allows an instrument to be upgraded and updated with new capabilities Functions protecting your investment for the Future To check which capabilities your optimus has go to General View page 5 and 6 on some models This will list all the availab
25. ess any key to restore the display The time intervals for the screen dim and screen saver are configurable in NoiseTools Display The optimus uses a high resolution colour OLED screen to show a clear and easy to read display of all the information you need Audio Recording Trigger Ready External USB Power Timer Mode Active Audio Recording Running Navigation Bar Battery Level Indicator Measurement Run Indicator a Information Bar gt O mZ 9 lt gt 1H lt LeqView f 9 Q Primary Function O LAeq 1s dB LC Peak 89 3dB Secondary Functions Measurement Display D i 3 5dB Analog Time History Chart Bar 7 Short LAeq LCPeak V 10f3 A Page Up Down Status Bar 07 01 10 09 43 21 Soft Key Bar gt Soft Keys Page 18 optimus sound level meter user manual Information Bar The information bar shows icons when functions are active Examples of the icons are shown in the diagram above Navigation Bar The navigation bar shows which View or Menu you are looking at Measurement Display In addition to primary and secondary functions the display features an Analog Bar on the left of the screen which shows real time A weighted sound level At the bottom of the screen is the Page information for your View ie 1 of 3 Status Bar When the optimus is not measuring the status bar shows the date and time When it is measuring the display shows the elapsed
26. ge The microphone capsule is also delicate and care needs to be taken when handling Damage caused by misuse is not covered by the warranty for the instrument Page 10 optimus sound level meter User manual To connect or remove the preamplifier please Follow the diagram Page 11 optimus sound level meter user manual Inserting the batteries Your optimus is powered by 4 x AA batteries also called MN1500 or LR6 We recommend that you use alkaline or lithium batteries to give the best performance Remove the battery cover by loosening the captive locking screw as shown below Battery Cover Retaining Screw Battery Polarity Indicators 7 ahd ps 4 0 0 o j 9 F Lo A OLLE P I YN IO Battery Cover Please look carefully at the diagram inside the battery compartment showing the correct polarity After inserting the batteries in the correct orientation replace the cover and tighten the locking screw Page 12 optimus sound level meter user manual The instrument is switched on by pressing and releasing the power button on the left hand side of the case After the boot screen your optimus will display the last View you used Calibration All noise measuring instruments should be calibrated before each use because the microphone is susceptible to minor damage from even small knocks The calibration applies corrections if needed to ensure that your measurements are as ac
27. in the menu the Stop button is replaced by the Pause Stop button This also enables the Back Erase function the duration of which can be set in the menu Back Erase The Back Erase Function allows a section of the measurement to be removed from the data used to calculate the overall values An example of this would be if during the measurement of cars on a road a large truck passed by the measurement location IF the intention was only to measure cars the truck can be excluded from the overall measurement data by pressing the Pause button and then using the Back Erase to remove a preset section of noise The time that the pause button was pressed along with the Back Erase duration will be excluded from the calculation of the overall noise values such as the Leq Lmin Lmax LPeak and the 1 1 and 1 3 Octave Band overall values Page 21 optimus sound level meter user manual The duration of the Back Erase can be set to between 1 and 30 seconds using the menu and can also be configured in the NoiseTools software If the Pause Function is disabled the Back Erase function is also disabled Memory The optimus has a 4GB memory as standard This is partitioned into two sections one to record time history and one for audio VoiceTags and audio recordings The space allocated to each can be configured in NoiseTools The free space in the memory is shown in the General View as days or hours available For both time history and audio When
28. k at the Features Matrix available on the Cirrus Research website www cirrusresearch co uk optimus library NoiseTools All optimus instruments are delivered with a copy of the NoiseTools software which can be used to configure the instrument some options are only configurable within NoiseTools and not on the instrument it will be made clear in the text where this is the case NoiseTools is also a powerful environment for storing analysing and organising your data and produces reports for publication VoiceTag notes and audio recordings can only be played back through NoiseTools Keypad and Controls The optimus is controlled via the four arrow keys up down left and right and three soft keys which change in function depending upon the mode that the instrument is in The soft key function is shown above the button on the display The left and right keys move between the Views and the up and down keys move between the pages of each View Soft Keys Arrow Keys i j ne The ambient light sensor on the front of the instrument will illuminate the keypad and adjust the brightness of the display automatically when the light level Falls When the pause function has been activated described on page 27 the right soft key toggles between pause and stop Press once to pause back erase and twice to stop or alternatively press and hold for three seconds to stop Page 16 optimus sound level meter user manual Connector
29. laced 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 cut out Battery type 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 When 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 Specifications 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 Technical Information 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 70 C 20 C to 70 C 6 19 cm3 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 The normal mode of operation of the calibrator is with the unit switched on Page 42 opti
30. le capabilities Alternatively a Feature Matrix is available on the Cirrus Research website which lists all the capabilities For all optimus models Some options cannot be changed while the optimus is measuring and a message will appear on the screen telling you cannot be changed while measuring Some menu choices are disabled while measuring and will appear grey on the screen Views The views are accessed by pressing the left and right control keys The views are available when the optimus is measuring not measuring or in review mode but the pages available in each mode will differ Not measuring When not measuring the information shown is live instantaneous values Measuring When measuring these live values are still shown but you are also shown cumulative overall values for the current measurement period Review Mode In review mode the values shown are the overall cumulative values for the meaurement General View This shows the status of the instrument with the calibration data the capabilities that are fitted serial numbers of the instrument microphone and preamplifier along with details of the standards that the instrument meets Sound Level View This view shows the Sound Pressure Level or SPL with the maximum and minimum sound level Lmax and Lmin with a choice of A C and Z frequency weightings Page 23 optimus sound level meter user manual Leq View Shows you the Leq Peak LAE SEL and C A va
31. librator 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 Page 40 optimus sound level meter user manual 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 Your optimus sound level meter will automatically make adjustments for the level produced by the acoustic calibrator and the microphone type fitted to the instrument 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 Changing the Battery The CR 514 amp CR 515 acoustic calibrators use a single 9v alkaline battery This type of battery is known as 6F22 or NEDA 1604 It is also commonly known as PP3 Battery Cover Retaining Screw Battery Page 41 optimus sound level meter user manual 1 Unscrew the screw holding the battery cover on using a coin or the keyring provided 2 The battery type 6F22 PP3 can now be eased out of its holder and rep
32. low Impulse Adjust Screen Brightness Fixed Auto default Set date time formats dd mm yy mm dd yy dd mm yy dd mm yy yy mm dd hh mm ss hh mm ss AM PM Language English Fran ais Deutsch Espa ol Italiano Please note when changing language the instrument must be restarted for the change to take effect Page 27 optimus sound level meter user manual Storage options Time History Rate 2s 1s default Vasec 500ms Yasec 250ms 1 8sec 125ms 1 16sec 62 5ms 1 100sec 10ms Voicelag On Off Single Timer On Off 1min 2min 5min 10min 15min 30min Thr Custom default 10min Repeat Timer On Off 1min 2min 5min 10min 15min 30min Thr Custom default 10min Day Evening Night Quick Settings e UK e EU e OSHA HC and PEL e OSHA HC and ACGIH e MSHA HC and EC e Custom Set Clock Follow the instructions on the screen to set the date and time using the format set in View Options Set Date and Time Format above Page 28 optimus sound level meter user manual Additional Information Additional information on the following topics can be downloaded from the Cirrus Research website Please visit www cirrusresearch co uk library optimus for the latest versions of these documents e Technical Note 28 Recording Audio with the optimus green CR 170 sound level meters e Technical Note 29 Timer mode options e Technical Note 30 Project Exposure Calculation e Technical Note 31 NR
33. lues with a choice of A C and Z frequency weightings The C A data can be used with the HML method for selecting hearing protection IF the Time Weighting is set to Impulse the C A function is replaced by LAeq also known as LAleg When the instrument is set to the German language an additional Taktmaximal page is also available 1 1 Octave Band View This view shows the noise levels divided into Octave frequency bands This can be used to aid in the selection of hearing protection and also for noise control applications Some models also have the capability to show NR amp NC Curves and resultant values 1 3 Octave Band View This view shows the noise levels divided into 1 3 Octave called third octave frequency bands This can be used for environmental noise measurements and also For noise control applications The 1 3 Octave Band View also provides Leq LF 20Hz 200Hz and LAeq LF 20Hz 200H2 Tone detection This is a capability on some instruments displayed within the 1 3 octave view Instruments with Tone Detection use either the 150 1996 2 2007 Simplified Method or an improved method developed by Cirrus Research which is based upon the ISO standard extended to include tones between bands tones in outer bands and Z weighting The ISO method only applies to overall data when measuring or reviewing whereas the Cirrus Improved Method also applies to instantaneous live values When a tone is detected the
34. mus sound level meter user manual 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 the cavity Facing away from the emitter with the battery compartment facing the table the antenna polarisation horizontal and the calibrator switched on 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 1 2 inch microphones making the effective calibration level 93 7dB Calibration corrections are listed below for the Cirrus Research plc 1 2 Capsules and three microphone capsules commonly used in Calibration Laboratories Microphone Correction Values Microphone Type Calibration Correction Effective Calibration Level MK 202 0 3dB 93 7 dB MK 215 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
35. navigation between the Menus and Pages and the options available For more detailed information please see the appendices Main menu Restart Review stored data Clear memory Advanced options View options Storage options Quick settings Set clock Restart Pressing Menu Restart at any time during a measurement resets the elapsed time to zero and deletes the data for that measurement only Review Stored data Using the left and right keys moves between the different Views see previous chapter For details and the up and down keys move between the Pages of each View The status bar will tell you which measurement you are looking at out of the total for example Measurement 4 of 9 Clear Memory Permanently deletes all stored measurements Page 26 optimus sound level meter user manual Advanced options Restore Factory Settings Restores the instrument back to its original factory setup AC Out On Off 200B Gain High Levels 70 140dB or Low Levels 20 90dB Audio Quality Standard Quality 16bit 16kHz Studio Quality 32bit 96kHz Audio Triggers On Off Default 75dB LAeg No minimum time User adjustable on the optimus Select any user programmed triggering templates Pause On Off Back Erase Duration 0 30seconds Please note after 5 minutes in pause the optimus will restart View options Set level colours Analog Bar Defaults 80dB Yellow 85dB Red User selectable Time Weighting Fast S
36. optimus sound level meter user manual This allows you to record notes and information before a measurement by simply speaking into the microphone then play them back later in the NoiseTools software You can save time when making measurements and remove the need to carry a notepad and store any important information about your measurements A single measurement range By using the very latest in digital technology combined with 40 years experience in designing sound level meters we have given the optimus instruments the ability to measure from 20dB A to 140dB A and up to 143dB C Peak in a single span This means that there is no need for you to choose which range you may need for your measurement and that there is almost no chance of the instrument overloading or under ranging A clear simple display of the information you need The display used on the optimus is a high resolution colour OLED type This gives a clear bright display that is easy to read in all light conditions as well as allowing us to use colour to show specific Functions and information All of the information that you need is shown clearly on the screen with the most useful function for example the Leq in the Leg View shown in large white text This makes it easy for you to see the information that is important at a glance A modular design to future proof your investment The optimus instruments are based around a modular design which allows you to Upgrade
37. r the CR 514 and CR 515 Acoustic Calibrators Page 14 optimus sound level meter user manual Making a measurement Press the Start key to begin recording on data logging intruments with the VoiceTag Function switched on the VoiceTag screen will show press skip to move on without recording a note Your optimus is now measuring and recording noise data for all available Functions regardless of your selected View and the red animated Running icon will show in the top left of the information bar The measurement can be paused by pressing the Pause Stop soft key Press once to pause back erase and twice to stop or alternatively press and hold for three seconds to stop For Pause amp Back Erase see page 21 The Pause Back Erase function is only available if this has been enabled in the instrument menu To stop the measurement press the Stop key The instrument will change from measurement to review mode and your data is stored and ready to review and download For instruments without data logging only the last recorded measurement is available for review Page 15 optimus sound level meter user manual Operations in more detail Please note from this chapter on the manual describes capabilities which are available on different models within the optimus range IF you are unsure which capabilities your optimus has you can check on the instrument by looking at the General View page 5 and 6 on some models or loo
38. s The connectors used by the optimus to communicate with a PC and NoiseTools are at the bottom of the instrument under a protective cover Open by pulling this edge Protective Cover 3 5mm Socket AC Output Multi 1 0 Interface Connector RS232 amp DC Output USB Connector Wrist Strap Fastening Pin The optimus can be powered via the multi pin connector on the bottom of the instrument Power can be connected using a ZL 171 optimus power input cable 2 1mm Power Jack 2m or via ZL 176 optimus 12v Battery pack cable The optimus can also be powered from an external source such as a USB connection to a PC or via a USB power supply External Power via USB External Power via Multi Pin Connector Leq View Leq View Page 17 optimus sound level meter user manual An AC output is available on the optimus via the 3 5mm jack socket The output is un weighted and the output level can be adjusted using the options in the AC Out menu This output can be used with external instrumentation See page 37 for details of the electrical outputs Screen saver IF no keys are pressed for 6 minutes the display will dim to preserve battery and screen life and reduce power consumption After 30 minutes with no key presses the display will switch off completely and keypad flashes every two seconds to show that the instrument is powered The screen dim and screen saver functions will occur during measurements as well as when not measuring Pr
39. s sound level meter user manual Introduction Welcome to your optimus sound level meter This next generation instrument from Cirrus Research plc is powerful yet simple to use and is capable of a wide range of noise measurement functions The advanced technology used in the optimus instruments does not get in the way of you making effective noise measurements and the large clear screen makes it easy to read the comprehensive information on the display The optimus makes your noise measurements simple Measure everything and forget nothing One of the key aims of the optimus instruments is to give you a sound level meter that is as simple to use as possible whilst providing the very highest level of performance and function You cannot forget to measure the right function as everything is measured at the same time PiCirrus For example if you ve chosen the Fast time weighting View Option the optimus will still measure Slow and 1220 Impulse at the same time You can choose another time weighting View Option amy from the menu and then see real time data or review stored measurements using the new parameters This applies to all other noise parameters excluding Dose for further details see page 25 The optimus measures them all and you can choose your View Option to review the data VoiceTag audio recording The data logging versions of the optimus feature the VoiceTag audio recording function Page 8
40. sound level meters Optimus User manual for optimus sound level meters p Cirrus Research plc optimus sound level meter user manual Page 2 optimus sound level meter user manual About this manual e The instructions in this user manual refer to the operation of Cirrus Research ple optimus sound level meters with version 2 4 or higher of the firmware e Theinstruments described in this manual are the optimus yellow CR 150 series optimus red CR 160 series optimus green CR 170 series and optimus purple CR 190 series e Some functions described in this manual are only available on red or green versions of the optimus sound level meters Where functions are applicable to only some instruments in the range this will be clearly indicated in the text e In this manual optimus is used as a general reference for the optimus sound level meters and calibrator is used as a general reference for an acoustic calibrator e This manual describes the recommended usage of the optimus Any warnings will be indicated by e The additional information required for testing in accordance with IEC 61672 is provided as a supplementary document Optimus Sound Level Meters Technical Data Part B which is available for download at www cirrusresearch co uk library optimus e tis not possible to change the way that the instrument measures through the software or firmware Any legal metrology aspects of the instrument cannot be
41. t Run Time Time amp Date of Measurement Start Page 35 optimus sound level meter user manual 1 3 Octave Band View e Overall Leq for each octave band 36 items for 6 3Hz to 20kHz e Overall LAeq for each octave band 36 items for 6 3Hz to 20kHz Leq LF amp LAeq LF 20Hz to 200Hz e Time History Leq for each 1 3 octave band 36 items for 6 3Hz to 20kHz stored at the Global data rate minimum duration of 1 16 seconds e Measurement Run Time e Time amp Date of Measurement Start Ln View e 14Ln values for each measurement in Ln set 1 e 14 Ln values for each measurement in Ln set 2 CR 171C amp CR 172C Moving Average View e Page 1 o LASMax o LA95 e Page 2 o LASMax o LA95 Page 36 optimus sound level meter user manual Menu Quick Settings The Quick Settings available are UK 3dB No Threshold No Time Weighting Criterion Level of 85dB EU 3dB No Threshold No Time Weighting Criterion Level of 85dB OSHA HC amp PEL Integrator 2 5dB 80dB Threshold Slow Time Weighting 90dB Criterion Level Integrator 3 5dB 90dB Threshold Slow Time Weighting 90dB Criterion Level OSHA HC amp ACGIH Integrator 2 5dB 80dB Threshold Slow Time Weighting 90dB Criterion Level Integrator 3 3dB No Threshold Slow Time Weighting 85dB Criterion Level MSHA HC 4 EC Integrator 2 5dB 80dB Threshold Slow Time Weighting 90dB Criterion Level Integrator 3 5dB 90dB Threshold Slow Time Weighting 90dB Criterion Level C
42. t level colours 27 Short LAeg 32 Single Timer 28 AA 31 A EER 27 Sound Level 35 Status Bars tlre 19 Storage options 28 Stored Measurements 35 Taktmaximal 24 32 Tires 37 Time History Rate 28 Time Weighting 27 Time Weightings 31 TE asii 21 Tone detection 24 Tripod Mounts lt accucsu 31 TWA sio 33 A AA 37 Under Range 19 Us AAA 17 View options 27 VIEWS cctv ota t es 25 VoiceTag 8 15 16 28 31 WaAIrranly ceccceceeeeeeees 45 Weight eeeeeeeeeeeeees 31 Windshield 22 optimus sound level meter user manual Cirrus Research 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
43. ustom Custom settings defined by the NoiseTools software Electrical Outputs AC Output The AC Output is provided on the 3 5mm jack socket at the bottom of the instrument Do not use a Stereo Jack Plug in this socket Only use a 3 5mm Mono Jack Plug The AC output has four settings a combination of High or Low levels and a 0 or 20dB amplifier Voltages and full scale levels are as Follows High Levels 70 140dB 0dB gain 1 3V pk pk 450mV rms at full scale 140dB 20dB gain 1 7V pk pk 600mV rms at full scale 132dB Low Levels 20 90dB 0dB gain 400mV pk pk 140mV rms at full scale 90dB 20dB gain 1 3V pk pk 450mV rms at full scale 90dB The output is unweighted i e Z weighted Page 37 optimus sound level meter user manual AC Output Cables The AC Output should be used with a ZL 174 ZL 177 or ZL 185 Cable These cables are available from Cirrus Research plc or your local distributor Do not use any other cable with the optimus This may damage the instrument and invalidate your warranty DC Output The DC Output is provided on the 18 Pin Multi lO socket at the bottom of the instrument The output is set to 25mV dB with LAF updated 16 times per second DC Output Cables The DC Output is available using a ZL 174 Output Cable This cable is available from Cirrus Research plc or your local distributor Do not use any other cable with the optimus This may damage the instrument and invalidate your warranty Cables
44. w your optimus features and capabilities o onoconncninncnncnnoncnoncnonnnoon 23 VIEW Sasien na ta atada Meth A 23 High Level Noise Measurement cecccceesceseeseeeseesececeeseeseceaeeaeseeceaecaeseeeeaecaeeeeeeaeceaeeaeseeeaeeaeeeeeeaeeaes 25 all QU a E TSE NY nie Semi eee ay Ae 26 Additional Information A O les celal a Ai ase thc 29 A A O 30 IEC 61677 ESA A A ele 30 Common Specialist E R AA A eno ah dae 30 VEW Ss ias ii tati 32 Stored Measurements ss si omens E RI ea nea ees NOM 35 Electrical QUES a a Soha eit Se eh ial Se 37 Acoustic Calibrator INFOrmallonicat 0 danish cee olde wake cent Ga ed as innate 40 Calibrating a Sounad Level Meter vota as 40 Changingithe Ball ya a da Gat avanti dd e e 41 SWECIFICALIOMS a a a N E E Re le 42 Technical SON a a a eae ed eee a oe 42 CE Certificate of CONOR RAV ice tc cto tate e ta cdo west dee 44 o AA A A telat Se tad ace 45 O A A 46 A erect ee tate hd eter tS dl a eae ae et dome tne 47 Page 5 Page 6 optimus sound level meter user manual Microphone Capsule Preamplifier Preamplifier Locking Ring Ambient Light Sensor amp Leq View om Display i i 100 us E JE 07 01 10 09 43 21 N Start Menu Calibrate Soft Keys Control Keys optimus sound level meter user manual Battery Cover Retaining Screw On Off Button ahd Battery Cover 91d ydseasay OLP P I A mn O Tripod Mount Page 7 optimu
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