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OPERATING MANUAL

1. Level range Leq Loeak a 1 17 Real Time MID 18 31 Analyzer RTA HIGH 43 BG e Frequency weighting C Level range Leq Loeak LOW 3 16 MID 17 30 HIGH 41 bb Remote Measure e Frequency weighting Z ment tional Level range Leg Lpeak optional LOW 7 20 MID 21 34 HIGH 46 58 e SPL actual Lea Lmin Lmax LCpeak e Gliding LAeg with t 57 10 15 and 60 e All measurement results simultaneously available e Correction value measurement wizard e Noise curves NC NR PNC RC with post process ing e Noise exposure level LEX with post processing e Logging all data or subsets in selectable intervals e Recording of wav files ADPCM a new wav tile starts every 12 hours max wav file size 512 MB e Recording of voice notes e Monitoring of sound levels that exceed limits e Digital I O interface for external peripherals control e Wide band e 1 1 octave band 8 Hz 16 kHz e 1 3 octave band 6 3 Hz 20 kHz e Level resolution 0 1 dB e Band pass filters conform with IEC 61260 class O ANSI 1 11 2004 class 1 e Frequency weighting X Curve in accordance with ISO 2969 e Capturing of a single reading into the Internal memory for comparative measurements e Querying measurement data online via the USB interface e SLMeter RTA function Recording of linear wav files 24 bit 48 kHz Percentiles for wide band and 1 1 and 1 3 octave spectrum 1 5 10 50 90 95 99 Sampling every 1
2. Now the parameter is set INTi AUDIO Getting Started Calibration prior Measurement We recommend the daily calibration of the XL2 Analyzer with the precision calibrator This ensures accurate measurement results For more details see chapter Calibration 21 INTi Sound Level Meter AUDIO The XL2 provides together with the measurement micro phone a precise sound level meter for monitoring live sound events and or environmental noise The Type Approval Option upgrades the instrument to the XL2 the sound level meter dedicated to certified measurements The XL2 with the M2230 microphone forms a type approved sound level meter offering class 1 performance according IEC61672 see chapter Options and Accessories For example Actual Lmin Lmax Leq with frequency weight ing A C and Z and time weighting F and S can be measured at the same time All measurement results are simultaneously available You may log all acquired level information including real time information onto the removable SD Card To com plete the documentation of the measured sound pressure lev els the XL2 offers wav file recording as well as the facility to add voice notes for each measurement The XL2 measures correction values between the loudest point of the live event and the actual measurement positions in accordance with DIN 15905 5 and SLV In parallel with the wide band parameters the XL2 measures the real time spectrum eithe
3. lamp To set the level values for the limit LED ri e Select the Red or Orange sound level with the rotary PLEC Linn LP Gl aso 14 55 a wheel and press enter a e Set the level value with the rotary wheel amp and confirm 1 Limit LED On i with enter 2 Legg k 8 Red gt 99 0 dE 3 Orange gt 95 0dE Green lt lt 956 AdE Select I O Box with the rotary wheel amp 3 and press enter to enable disable the limit function 4 Ir Box On STAT 23 5 Laeghttkl LAeg5 ki 7 Out 1 gt 99 8dB and gt 59 0dE 6 Out 2 95 606 and 933 0 dE gt ut3 95 0dE and 95 0dB Qut4 8d and AdB 61 INTi Sound Level Meter 62 AUDIO Setup the level for the control of e g the external Digital I O Adapter Box e Select the level field with the rotary wheel e Press enter and select the level for the control of the external Digital I O Adapter Box To set the level values for the control of the external Digital I O Box e Select the Out 1 Out 2 Out 3 or Out 4 level with the ro tary wheel amp 3 and press enter e Set the level value with the rotary wheel amp and confirm with enter Follow the setting for I O Sound Level 1 The I O level 1 may be combined with I O level 2 using and or combinations providing indications in level ranges Alternatively other lev els can be selected for the control of the external Digital I O Adapter Box Follow the setting for LED Level 1 I
4. SLMeter 123 SLAA 7 ast 13 24 FULDER MEH DIR LAF HyFroject m Homing Saving manual Save Test Save Screenshot Load Test COLLECT RESULTS If one FILE Start Append Mode L Aeq E 3323 8 HEYTE FREE HRITE Mr LEPE CACHE EHFTY OULD li ai A 30 RHGE 240 CT esas pe e Press enter to confirm Save Test 158 sbMeter 123 4 LAI asp 13 24 S FOLDER MEH DIR MvProject Save Test File RENAHE SEARCH He Test LHH E Automatic Humbering Record Voicenote GE CANCEL CACHE EHFTY LEFKE I 30 RAGE 130 cree cade e Select the user part of the file name The maximum length of the user part is 12 characters The right part _SLM_001 is defined by the XL2 to avoid overwriting of existing measure ments whereby SLM is the appendix for the measure ment function and 001 is an automatically incrementing number Data Management INTi AUDIO Voice notes are recorded speech annotations for each stored SLMeter 123 8 LRle TI 4 asp 13 24 S measurement The XL2 utilizes the internal voice note micro FOLDER NEH DIR phone for the recording MyvProject Soave Test e Select Record Voicenote and press enter File REMAHE SEARCH My Test LM_B864 E Automatic Humbering SS Record Volcenote Ga CANCEL CACHE EHFTY SL Heter 123 4 LAlE Y ASD 13 24 S FOLDER MEH DIR LAF MyProject LEFKE File REMAHE SEARCH My Test SLM_664 YWOICEHOTE I
5. e Set the time with the rotary wheel e Confirm each setting with enter Set the duration of the scheduled measurement s Off Schedules a single measurement On Schedules a sequence of measurements with the same start and end time times for the selected week days Select the week days for the recurrence Set the number of occurrences of the scheduled measure ment Each single measurement Is one occurrence Starts the scheduled measurement s Scheduler active Current time 2611 11 29 4 73 45 Hest stort 2011 11 30 tie tesgg Press and hold ESC to quit Scheduler Iml ASD 14 23 S Scheduler INTi AUDIO After starting the scheduled measurement the XL2 waits for the next scheduled start date and time The instrument buttons are disabled It is recommended that the instrument remains powered on until the next start time using the accessory mains power adapter If the XL2 is powered off and on again during this time then the XL2 Analyzer restarts in the Scheduler function and continuous the countdown This applies also for any interrup tion of mains power supply Press and hold the escape button to stop the schedule Starting the schedule switches the USB interface automatically into the COM port mode for remote measurement applications or using the XL2 Projector software 153 INTi Data Management AUDIO The XL2 stores all acquired measurement data including real time information onto the
6. 17 INTi AUDIO The RT60 measurement function allows consecutive mea surements within one test sequence An averaged test re sult of all measurements is automatically calculated Select CYC and scroll with the rotary wheel amp through the individual test result cycles showing Last Displays the result of last measurement cycle XX The individual single test results are marked with CYC xx where xx is an incriminating num ber You may delete individual test results The averaged reverberation time result uses only the remaining valid measurements To delete results in a cycle e Select DEL with the rotary wheel Confirm with enter AVRG The averaged test results of all cycles are calcu lated and displayed 79 INTi Reverberation Time R T60 20 21 80 AUDIO The correlation factor is 100 for perfectly linear sound pressure level decay after the sound source has ceased The natural deviation from this linearity results in lower correlation values The correlation factor is typically 80 100 Readout of cycle reverberation time and correlation factor 18 when selection 17 is CYC xx or Last Correlation Factor Scale is on the right Yaxis For more details see 18 Ils Reverberation time measurement result of individ ual displayed cycle Scale is on the left Y axis The right Yaxis shows the correlation factor in The cor relation factor Y axis is displayed when test result selection 1
7. 30 ANGE 130 m corgg ne 19 e Select SAVE and confirm with enter LOPE Il SET 40 ANGE 230 Eoo opii e Select REC and press enter e Record the voice note and press enter to finish Tick off Automatic Numbering to store actual measurement results for later overwriting with new results 159 INTi e Select the memory menu with the rotary wheel amp and AUDIO Data Management confirm with enter e Select Save Screenshot and press enter e Select the file name and confirm SAVE with enter 160 SLMeter 123 KLAE M LAF max GE 110 ASD 13 24 qi FOLDER MEH DIR HFroject m Homing Soving manual Soave Test Load Test COLLECT RESULTS IN one FILE Start Append Mode fF 2322S HETTE FREE HRITE i z l CACHE EHFTY OULD SET cnt 00 00 30 You may configure the XL2 to store results automatically to the SD Card upon completion of the measurement by applying the Naming Saving auto function This is particularly useful for longer measurements such as sound level monitoring spanning several hours The default file name is the actual date e Select Naming Saving in the memory menu and press en ter to confirm Naming Saving auto LAeq LAF max SLMeter 123 8LAl BI LLELLU il PHGE 12 ASD 13 24 S FOLDER MEH DIR HFroject Haminaga Souina 5gave Screenshot Logd Test COLLECT RESULTS IMN one FILE Start Append Mode E 2
8. AUDIO The selected frequency band of the input sig nal is audible at the rear soeaker or headphone output e Press and hold the speaker button down The pop up window Volume is displayed e Keep the speaker button pressed and press enter at the same time iri Oct LA Bd ast 15 10 S Ef dE iriz OCT tls Live S1 5d0B H 3r 56Hz BO Volume 15 606 40 UUQUUUUQQUUUUANUUNALTITI B0 IdE 80 ao GSB bondpass 0 146 63 250 ik 4k ibk zZ TTT SET St Gere 20 PHGE 120 TH ls E EIT ce chee He Re 101 INTi AUDIO 1 12 Octave Tolerance The XL2 reads the electronic data sheet of any connected ASD microphones provided by NTi Audio and switches the 48V phantom power automatically on as follows e Connect the measurement microphone to the XL2 e Switch on the XL2 e Position the XL2 at the measurement location using a micro phone stand or tripod e Select the 1 12 Oct Tol function in the measurement menu The displayed wideband and spectral levels are measured and stored simultaneously 102 The XL2 displays two different sound pressure levels at the same time You configure to display either the levels Live Max Min EQ or captured results e Select the upper result parameter with the rotary wheel B 1712 Oct LA A ASD 11 27 Gi d2 OCT ne ki Trade 2Z1SHH2 ern 16k Ae SET 40 EHGe iyo e 4 15 E a CAT ws RT T HHH e Confirm w
9. AUDIO e Position the microphone at the STIPA measurement point e Select Measure without any test signal presence ASD 16 30 S LEG EDIT 42 6 dB E2 1dE 68 6 dE tE dB 43 2 dE 51 0 dE 51 8 dE 18 56 STIFA Cor LA E Ambient Hoise Correction Un Hoise to odd Bond SAAB Hz Tae Shs HARH2 MAILIN 26006 Hz 1AAA Hz LOAD SAVE CAAHZ 2 SHHz 125Hz SOURCE OF DATA Measured 2812 1 23 Bod You may edit the noise data 117 INTi AUDIO STIPA e Select the STIPA result page 123 e Perform the default STIPA measurement 118 STIFA PEE ASD 16 46 FIHISHEDC MMINIIIIIIIIIIIIIIIIIINII NITTI 0 82 st Measured A383 LAeq 43 7 dB las 73 9 dE In case no ambient noise correction has been carried out on site with the XL2 Analyzer then you may post process your measurement data on the PC The NTi Audio STIPA Reporting Tool combines the STIPA measurement taken at quiet condi tions and the actual ambient noise caused by the public e g during day time This emulates the expected STIPA value at real life conditions The STIPA Reporting Tool creates measurement reports ac cording to the IEC 60268 16 and VDE0833 standards Import the data directly from your XL2 including the ambient noise measurements The corresponding speech intelligibility STI or CIS values are shown The STIPA Reporting Tool is free to download on the XL2 Sup port website http my nti audio com for
10. Auto power off 16 Min Backlight Auto n Dimmed Date 2Ai2 0r 27 Time ote Ss Action at power on 1 Show aCA Tes Remember Spedker Enabled USB mode Ask on connect Dec separator Fhantom power e Start the XL2 Analyzer in Full mode e Select the typically used measurement function and adjust the measurement parameters according to the requirements For example measuring the sound levels Lar LAeg and LAFma x for 10 seconds SLHeter PEEIRREAR ASD 13 24 qi 69 6dB Lae e dB LAF max dB TT SET Ou po 40 RHGE 230 med BCE Profiles INTi AUDIO e Select Profile in the main menu and press enter Profile LAeq LAF max TT 30 BHGE 130 SLMeter 123 LA H ASD 13 24 qi 53 6dB 129 INTi Profiles AUDIO e Select Manage and press enter e Select Save Profile and press enter SLMeter 123 LA E lt asp 13 24 S SLMeter 123 LA E lt asp 13 24 Hanage Profile Save Profile gue Profile FROFILE Gann SEARCH Delete Profile MeFirstProtil Export to S0 Card _ Configure available screens Save Profile Append mode ayoilable no re B SAVE CAHCEL LAF max _ dB LAF max oe dB TT SET OOOO To MINI SET OOOO To 40 ANGE 230 Eo opipi 40 ANGE 230 Eo opipi Each stored profile includes all settings of all e Select Rename and press enter measurement functions and pages Only the e Set the pro
11. FFT Analysis Tolerance INTi AUDIO This field offers two functions e Symbols for measurement results 2 Upper result displayed as line uu Lower result displayed as bargraph e Capture amp Start Tolerance Mode The displayed readings may be captured as reference reading C1 to C8 for e Comparing measurement results against captured traces with relative or absolute curve display e Creating tolerance masks based on captured refer ence curves for passed failed measurements Capture EQ Captures the upper parameter Capture Live Captures the lower parameter 65 INT FFT Analysis Tolerance AUDIO Manage Allows to rename captures clear re captures corded captures save captures to SD Card for export from the XL2 or load captures from SD Card for import to the XL2 Start tolerance Starts the tolerance mode for passed mode failed measurements comparing the actual measurement results against a tolerance band Actual level result of the indicated frequency band The cur sor readout displays the center frequency and the level of the band indicated by the arrow Upper parameter displayed as line uu Lower parameter displayed as bargraph 66 e Select the YAxis with the rotary wheel and confirm with enter e Select the zoom factor between 20 10 5 2 5 dB div and confirm with enter e Scroll up and down with the rotary wheel amp to select the Y axis range Confirm with enter Display
12. HANDHELD AUDIO AND ACOUSTIC ANALYZER RPAntant AIT Apridin at Contact NTi Audio at Headquarter 423 239 6060 info nti audio com Americas 1 503 684 7050 americas nti audio com China 86 512 6802 0075 china nti audio com Czech 420 2209 99992 czech nti audio com Japan 81 3 3634 6110 japan nti audio com South Korea 82 2 6404 4978 korea nti audio com www nti audio com CN NTi Audio is an ISO 9001 2008 a Net m STY certified company Firmware V2 53 Version 2 53 03 11 Apr 2013 All information subject to change without notice All rights reserved Minirator is a registered trademark of NTi Audio TM XL2 XL2 TA EXEL M2230 M2211 M2210 M2215 M4260 and MA220 are trademarks of NTi Audio Made in Switzerland Table of Contents JINTi Table of Contents 1 Introduction ccccccccecceeseesseuseeeeseeeeeuesauseuesausauseausaueeans 5 5 Acoustic AMallyZeP ccccccseccsecceeeseeeeeecaeeeaseseeenaeesass 64 i FFT Analysis TOIGranCe ccccccccecceeccceeccceuseeuseeeaeees 64 2 Overview AA EA A NE E AA A A A EEE 7 Reverberation Time RT60 7 Operation 20 co cc ccc ccccceececeeceeeeceeeeeeeeeeeeeeeeeeseeaestaneseuneeenes 9 The Screen Displa 11 PO V eere e e E dts abasiiane Dolton 86 a a pa reise a pee DEV TITAS eer testa EE 90 3 Getting Started 0 0 0 ceccccceceeeseeeeseeeeeeeeesseeeessaeeeseaaes 14 1 12 Octave Tolerance Optional ccecceeeeceeees 96 Power UO ccert a Sec eE E
13. On STAT 23 3 100 dB Sound level recording LAeq5 k1 LAeg5 k1 Results to store for 30 days Dut 1 gt 99 0dE and gt 934 AdE Level warning to visitors Out 2 gt 35 6dB and 99 406 Hearing protection distributed Out 3 2 35 806 and 2 35 8dB Chill out zone lt 85 dB A Out 4 2 AdE and lt dE REEE 2 96 dB Sound level monitoring Level warning to visitors Hearing protection distributed You may import the log files into a report generator soft 1 93 dB Sound level monitoring ware based on MS Excel providing automatically completed live event reports with noise level charts The report genera tor software is a free download on the support website at http my nti audio com for all registered XL2 customers Maximum peak level LAFmax 125 dB 208 Appendix INT AUDIO The following sound levels are displayed in the real time ana SEOs Lec MURIAUD aso 15 27 g lyzer page L7Fhold3 For tracing of feedback frequencies The peak hold time is set to 3 seconds LAegg tkl 8 G s iB L7Flive Actual real time spectra m Laeger 98 5 dB LAFmas ki 116 7 de Select the page KSET with the rotary wheel kz Measure the correction value k1 as described in the chapter p a a ee Correction Value KSET k2 is not required for SLV Ill S0 RHGE 150 og aes tS e Press the start button ba e The icon LOG flashes during the ongoing measurement In the case where the profile SLV 100dB amp Audio has been
14. Phantom power is switched off Factory sensitivity of measurement microphone in mvV Pa The sensor detection of the XL2 reads the sensi tivity automatically from the electronic datasheet of the connected NTi Audio measurement microphone or micro phone pre amplifier Sensitivity setting with an external calibrator The reference calibration level is 114 dB The XL2 Supports a level setting between O dB and 200 GB 125 INTi Calibration 5 L7F Default setting LHP100F Suppressing any low frequency noise for example wind during outdoor calibrations 6 Read out data from the connected microphone 126 Usersensitivity setting for measurement microphones with an external calibrator e Turn the rotary wheel amp to select the parameter Calibration Level 4 and press enter e Set the calibration level according to the calibrator used e Generate the specific reference signal with the calibrator onto the microphone e Turn the rotary wheel amp s to select the parameter RUN next to User Calibration 3 and press enter e The pop up window Calibration Calibration running shows up and changes to Calibration Successfully fin ished for a successfully completed calibration The XL2 writes the usersensitivity setting onto the electronic data sheet of the connected NTI Audio measurement microphone or microphone preamplifier All subsequent measurements au tomatically utilize this usersensitivity In case no e
15. tive 91 INTi AUDIO Delay Time The delay time measurement is conducted between the syn chronized electrical input signal and the acoustic signal mea sured by the built in voice note microphone In this example the delay between speakers A and B in the illustrated audito rium is measured speaker front right x speaker A front left p gt lecturer EE en ee a a a a a goo go o o o o o o o E a a a a a a a E E ELLEL es ee ee TETTI measurement E O O oO o o o o Posion E E a a a E a a E a a a a a a a speaker sub right Y speaker B sub left 4 92 Prepare the delay test signal use either the e NTi Audio Test CD e NTi Audio Minirator for analog systems e NTi Audio Digirator for digital or Dolby DTS systems Start the delay test signal Connect the generated delay test signal with an audio cable to the RCA or XLR input of the XL2 e g take the reference signal from an auxiliary channel of a mixing console Select XLR or RCA input in the upper XL2 menu Set the actual environment temperature to ensure that the distance is displayed correctly later 13 45 S Del 5i l PP an alas Winirater Act Delo TORE E ee re re ms AAmes Act TTT TT7 ms Distance ZAP i oo o0 Synchronizing 05 00 e Wait until the XL2 synchronizes to the incoming delay test signal then the synchronization time bar fills up Delay Signal n a Mainirater Act Delo STO
16. 10h OOmin OOsec Start of XL2 measurement 10h OOmin 05sec Leqd Leg of this 5 seconds 211 INTi 212 AUDIO Appendix 10h OOmin 06sec Leq5 Leg of the time win dow trom 10h OOmin 01sec to 10h OOmin 06sec 10h OOmin 07sec Leq5 Leg of the time win dow from 10h OOmin 02sec to 10h OOmin 07sec Application example e Display the moving Leq over 5 seconds in accor dance with DIN15905 e Measure the moving Leg over 60 minutes in ac cordance with SLV2007 Time constant t 125 ms the time weighting is an exponential function of time which defines how changes of the instantaneous sound pressure level are averaged for useful sound pressure level results The measurement results are shown accu rately for sound sources with a minimum length of 0 5 seconds Fast time weighting Is typically used for common sound level measurements I For tracing of feedback frequencies in the RTA page The hold time can be set to 3 5 or 10 seconds Time constant increase t 35 ms time constant decrease t 1500 ms the time weighting is an exponential function of time which defines how changes of the instantaneous sound pressure level are averaged for useful sound pressure level results The measurement results are shown ac curately for sound sources with a minimum length of 0 1 seconds Impulse time weighting is used for impulsive sound sources Applies to RMS based values LAF LAeg The correction value
17. 4 aso 13 24 S L2F FRED WEIGHTING OCT ee ee ee ee eee m L2F A C ee 2 842 SLMeter Mm SLAL 4 aso 13 24 a AD p LF FRED HEIGHTING OCT Hz Ho TIHE HETGHTING LF a BO 40 BO 20 40 o 20 BO Z250 ik Uk 20k az Mil LLULL g Eoo 10 ANGE 110 clit Sse HE a are LLULLU g Eli 10 ANGE 110 cit Go Geos e Confirm with enter Press start D to measure and display the Confirm with enter sound levels results Indicated with 40 e Select the parameter shown to the right of the upper LZF value with the rotary wheel e g max e Press enter e Select the parameter max SLMeter ii LA Bl L F imax FARANETER r 5 4 e Confirm with enter e Follow the same instruction and select the lower RTA pa rameter live i LZFlive livel FE EILA PKI i Fa 0 20 Bo 250 Lik UL UNQINEQUUNAQUUINNT il HGE 140 Sound Level Meter INTi AUDIO e Select the lowest possible input range according to the maxi mum level expected during the measurement Wrong Input ranges are indicated by a flashing LOW or OVR message in the lower menu bar e Select the input range RNGE and press enter e Turn the rotary wheel amp to set the applicable input range and confirm with enter SLMeter nt LA Bl L2F moz 7 7 dB as LEFlive 1 106 r TT SO ppa Low n 40 20 o 20 BO 250 ik Yk 20k AZ Da l The numeric re
18. Consult the local Utilize the STIPA Reporting Tool for the documentation of your regulations e g the NFPA code in the U S for directives measurements according the standard concerning measurement locations and number of required STIPA measurements under which circumstances An STI gt 0 63 ensures that the speech intelligibility is higher than 0 5 with a confidence level of 95 119 INTi STIPA AUDIO Only high quality CD Players should be used to reproduce the STIPA test signal as only limited time shifts 20 ppm ensure reliable STIPA test results Pitch control and shock protection should be disabled We recommend that only protessional CD Players be used Verify the time shift of the CD Player with a 1 kHz test signal e Insert the NTi Audio Test CD into the CD Player and start track 1 which is the 1 kHz test signal e Connect the XL2 directly to the audio output and mea sure the signal frequency in RMS THD N mode The dis played frequency should be in the range from 0 99998 kHz to 1 00002 kHz STIPA test signals from other test system manufacturers may sound similar but are not compatible Only the NTi Au dio STIPA test signal CD V1 1 or higher should be used in combination with the XL2 120 e Select typical locations based upon such regulations or typi cally position the microphone at 1 1 2 meters above ground in sitting areas or 1 5 1 8 meters in standing areas typical positions are not directly i
19. H 4 g No No RTA measurement reporting Leq The RTA Leq level is stored in the report 48 Leq Lmax Ihe RTA Leq Lmin Lmax levels are stored Lmin in the report All All RTA levels are stored in the report Choose between the following result reporting ALL Records all available sound pressure levels without correction values Selected Records a subset of up to 10 different levels including correction values if you require e Select Report Values with the rotary wheel e Press enter to toggle between All or Selected e By setting Selected at 2 up to 10 individual report val ues can be chosen Select the first value Lxx with the rotary wheel amp 3 and press enter e Select the reporting level with the rotary wheel and confirm with enter Sound Level Meter INTi AUDIO The XL2 features a powerful sound level meter data logger which allows you to record all required sound level values dur ing the selected period of time All results are logged onto the SD Card The measurement results can be loaded to a PC for documentation and visualization The LOG menu offers the de tailed setup of the log report Sauna Lod LA E ast 15 35 g Logging every m sec SRAC Loa LA E Asb 15 35 g Logging every LABMS 1 1 2 Interval dt HHHH 2 Interval dt LAA ms 3 Add Spectra Ho 3 Add Spectra Ho 4 Log Audio On 4 Log Audio On 5 Format Compressed
20. SLMeter The limit button lights up green yellow or red according to the settings in the Limit page Press the limit button W to access the Limit page For more details visit the chapter Limit Setting e FFT Tol The limit button lights up green for results within tolerance and red for out of tolerance results e Polarity he limit button lights up green at positive polar ity and red at negative polarity e 1 12 Oct Tol The limit button lights up green for results within tolerance and red for out of tolerance results Lu Pauses the current measurement Press the pause button Lu or the Start stop button ba to continue the measure ment gt m Starts and stops a measurement Confirms a selection Selects the required measurement function or the individu al measurement parameter esc Terminates an entry returns to the top menu level or closes an open window Overview INTI AUDIO The XL2 displays the actual sound levels also in case of no measurement has been started Any displayed averaged level refers to the previous measurement period The XL2 shows 2 Y9 V AY 8 Q four lines in case of no previous measurement period is ap a o O plicable MAAA 123 SLA ast 13 24 a LAF e Numeric values Updated every 500ms independent of the measurement 88 Fi dB function The maximum time span between the end of E the measurement period and the first test result display is Leg 78 6dB BOOMS LEF
21. These levels are shown in the numeric result page selected the icon AUD flashes indicating the additional au LAeq5 k1 Time averaged sound pressure level LAeq dio wav tile logging with correction value k1 and a moving time During the measurement you can monitor the actual sound window of 5 seconds level LAeq5 k1 in order to remain below the permitted lim its alternatively you may monitor the spectrum analyzer for tracing possible feedback frequencies Press stop bm to finish the measurement LAeq60 k1 Time averaged sound pressure level LAeg with correction value k1 and a moving time window of 60 minutes LAFmaxtk1 Maximum sound pressure level LAFmax with correction value k1 209 INTi 210 AUDIO Appendix In accordance with SLV all sound levels are measured displayed and logged to SD Card automatically The settings are locked which ensures that the correct parameters are mea sured The profile SLV 100dB amp Audio includes the recording of Compressed AGC wav tiles This profile is configured with the following limits which trigger the lights on the limit button and external Digital O Adapter This facilitates a quick response to sound levels that exceed these limits Meet Lim eLA Gl ast 15 28 g Limit LED On LAeg5 k1 Red gt 100 0 dE Orange 96 0 d breen 2 96 0 dE Ir Box On STAT 23 LAego tkl LAegg tkl Out 1 gt IBR BdB and 100 0 dE Out 2 gt SE BdE ond 2160 0 d
22. amp 9 and confirm with enter iri Oct UE ASD 1130 S FOLDER MEH DIR l T I Live eto HomingtSoyving manual Save Test Save Screenshot Logd Test Hiire 18420 MByte nz 40 ib E 250 ik ik TT 40 GAGE ido Tels E SET CHT eS e Press enter to store the test results as an ASCIl file or select Save Screenshot to store the screenshot INTi AUDIO 1 12 Octave Tolerance The Spectral Limits Option extends the function range of the XL2 with trace capturing relative curve display and compre hensive tolerance handling for the FFT Analysis and the high resolution 1 12 Oct Tol spectral analysis Features e Capturing of multiple readings into the internal memory e Comparing measurement results against captures with rela tive or absolute curve display e Comprehensive tolerance handling e Creating tolerance masks based on captures for passed failed measurements e Export and import of tolerance and capture files e True peak level in 1 1 and 1 3 octave resolution e High resolution Zoom FFT up to 0 4 Hz steps in the frequen cy range 5 Hz 20 kHz Read the detailed description in the separate chapter Spectral Limits Option Capture Tolerances in this man ual 105 AUDIO The STIPA analyzer option allows reliable measurement of the speech transmission index within 15 seconds Besides the single value STI or CIS test result a detailed view of the modulation in
23. in the log Tile SLMeter Kset SLA Gl asp 13 24 a Position LAegS Li Pegk Audience Fun anii ia 09 ag ay ied 115 7 dE Measure EM anii ia n9 ag ay PLEJE 126 7 dE Difference bi 1B 1dB 8 5dB 3 1 CLEAR ALL HANUALLY ADJUSTED Une 9 IMM SET S0 AHGE 150 CHT oat ey e Turn the rotary wheel to select the correction value 3 and press enter Sound Level Meter INTi AUDIO e Set the correction value with the rotary wheel The note Manually Adjusted is displayed at e To undo the manual setting turn the rotary wheel amp s to select the parameter UNDO at Confirm with enter Reset C orrection Values You may clear all correction values back to zero by pressing the Clear All O and confirm with enter W Display k1 and k2 during Measurement The correction values k1 and k2 can be dis played in the numeric result page during the on going sound level measurement instead of any other sound levels Wav file Recording A simultaneously recorded wav file supports post event reviewing of the cause of excessive sound levels 47 INTi Sound Level Meter AUDIO A report saves the conducted measurements onto the installed SD Card The XL2 Supports setting the individual levels to be stored in the report after the measurement is completed SEEE Ree SLA Gf Asb 13 24 g Report Setting 1 Add Spectra AL 2 Report VWolues Selected 3 0 LAeg re 1 LOPK max E p m i J
24. is displayed Measurement results area with positive polarity The black line in the middle of relative level indicator 5 displays the measured polarity of the individual frequency band The dashed line indicates the upper limit of the measurement result area For acoustic polarity measurement you can use the internal voice note microphone or an external measurement micro phone plugged into the XLR input The polarity result for left and right speaker cabinets should match for a good stereo sound image e Feed the speaker cabinet with the polarity test signal of the Minirator e Adjust the test level at Minirator or amplifier until the test signal is clearly heard e Enable the polarity test signal at the left speaker cabinet mute the right speaker cabinet e To activate the internal microphone select Signal Source with the rotary wheel and choose Voice Note Mic with enter e Measure the polarity of the left soeaker cabinet and save the screenshot in the memory menu LBL e Enable the polarity test signal at the right speaker cabinet mute the left soeaker cabinet e Measure the polarity of the right speaker cabinet e Compare the polarity test result of both speaker cabinets Polarity INTi AUDIO ate Gl ash 13 24 i gee SUE 425 250 S00 ik Zk 4k Bk aw Relative Level The sample result shows the polarity as e Sub woofer Low energy no sub installed e Woofer Positiv
25. speaker cabinet Therefore the polarity detailed result page of the XL2 displays the measured polarity of the individual octave bands from 125 Hz to 8 kHz This allows in depth verification of the polarity frequency relationship e Polarity is a simple test within the very com plex science of signal phasing Drivers speak ers and crossovers all cause phase shifts of the audio signal e The polarity of various speakers within the same cabinet may differ by design e Polarity testing is useful for checking the cor rect wiring of similar soeaker systems 86 AGEL les E 13 59 S 1 Signal Source MLE Input 20 8d6u Folarits POSITIVE Use Hinirator Polarity Signal Polarity INTI AUDIO Select the signal source as follows e Select Signal Source with the rotary wheel Press enter to select either Voice Use the internal voice note microphone of the R nt Gl ast 13 24 a Note XL2 for polarity measurements This selection Mic disables the rear speaker _ E XLR Measure the acoustic polarity with a measure a 10 Input ment microphone Alternatively measure the H polarity of an electrical signal connected with 9 an XLR audio cable T a 8 l RCA Measure the polarity of an electrical signal con Input nected with an RCA audio cable SUE i25 250 S00 ik Zk 4k Bk 7 2 Displays either POSITIVE NEGATIVE or undefined Polarit It for Minirat
26. 1 To display sound level results 4 amp 5 choose a smaller font for all results Follow the setting instructions for sound level result 1 The XL2 Analyzer provides three input ranges to accom modate the wide range of input signals The individual rang es are based on the microphone sensitivity setting in the calibration menu of the XL2 For example at a sensitivity S 20mV Pa the input ranges are e Lower range 10 110 dBSPL e Middle range 30 130 dBSPL e Upper range 50 150 dBSPL Select the lowest possible input range according to the maximum level expected during the measurement e g if the sound pressure will always be below 110 dBSPL then select the lowest input range 10 110 dBSPL OVR LOW Overload The error message OVR is displayed when e The measured sound pressure level exceeds the pre set measurement range during the measurement period Once this happens the OVR indication remains displayed for the complete measurement period gt choose the next higher measurement range e The measured sound pressure level is just be low the maximum level of the connected NT Audio measurement microphone Input level too low The error message LOW is displayed when e The measured sound pressure level is below the pre set measurement range In this case the results shown are most likely higher than the actual measured sound pressure level gt choose the next lower measurement range e The measured sound p
27. 15905 5 DIN 45645 2 optional DIN 45645 1 e Japan JIS C1509 1 2005 JIS C 1513 class 1 JIS C 1514 class 0 e Switzerland SLV e US ANSI 1 4 ANSI 1 43 ANSI 1 11 2004 class 1 e International IEC standards are adopted as European standards and the letters IEC are replaced by EN XL2 conforms to these EN standards e Measurement bandwidth 3dB 4 4 Hz 23 6 kHz e Level resolution 0 1 dB e Internal noise 1 3 uV A Weighted e Frequency weighting A C Z e Time weighting Fast Slow optional Impulse e XL2 M2230 23 1 dB A 139 dB e XL2 M2215 36 dB A 153 dB e XL2 M2211 30 dB A 144 dB e XL2 M4260 36 dB A 144 dB lt 10 seconds e A weighted level 23 1 139 0 dBSPL e C weighted level 23 6 139 0 dBSPL e Minimum 1 second e Maximum 100 hours minus 1 second 193 INTi AUDIO Level Range Residual noise in dB S 42 mV Pa of XL2 without measure ment microphone 194 Specifications Three level ranges depending on the microphone Measure sensitivity with manual setting ments e M2230 sensitivity 42 mV Pa LOW lower level range 0 100 dBSPL MID mid level range 20 120 dBSPL HIGH upper level range 40 140 dBSPL e M2211 M4260 sensitivity 20 mV Pa LOW lower level range 10 110 dBSPL MID mid level range 30 130 dBSPL HIGH upper level range 50 150 dBSPL e Frequency weighting A
28. 3 ms Wide band in 0 1 dB wide classes based on sampling LAF 1 1 and 1 3 octave spectrum in 1 0 dB wide classes based on Lxy x A C or Z y F or S Dynamic range 140 dB Sound Exposure Level LAE 100ms logging Event triggered audio and data recording Time weighting Impulse Lxl Lxleq with x A C Z True peak level in 1 1 and 1 3 octave resolution Clock Impulse Maximum Level TaktMax and values as specified in DIN 45645 1 e FFT function High resolution Zoom FFT with selectable fre quency ranges and resolution up to 0 4 Hz in the range of 5 Hz to 20 kHz e RT60 function Reverberation time RI60 in 1 3 octave resolution Specifications Functions of Spectral Limits Option optional INTi AUDIO e SLMeter RTA function True peak level in 1 1 and 1 3 octave resolution e FFT function High resolution Zoom FFT with selectable fre quency ranges and resolution up to 0 4 Hz in the range of 5 Hz to 20 kHz e 1 12 octave function High resolution RTA function 1 12 Oct Tol Selectable 1 1 1 3 1 6 and 1 12 octave spectral resolution Frequency band listening at rear soeaker e FFT and 1 12 octave function Capturing of multiple readings into the internal memory Comparing measurement results against cap tures with relative or absolute curve display Comprehensive tolerance handling with toler ance masks based on captures for passed failed measurements Export and impo
29. For further visual indication the limit button illuminates nee saree eco ceeer green for POSITIVE and red for NEGATIVE polarity Measures the absolute level of the input signal The unit s dBu dBV and V are selectable 87 INT Polarity AUDIO 4 1 Indication of the audio signal balance between pin 2 and 3 on the XLR input for input signals gt 34 dBu The input signal is balanced E The signal is unbalanced The level of pin 2 is higher than pin 3 The signal is unbalanced The level of pin 3 is higher than pin 2 The grey area shows the measured signal energy within the individual frequency bands The bands with the biggest energy have the most effect on the actual displayed POSI TIVE NEGATIVE polarity result Polarity of frequency band is positive The polarity re sult is in the upper display area the area Polarity of frequency band is negative The polarity result is in the lower display area the area 88 Seven octave bands with center frequencies from 125 Hz to 8 kHz SUB displays the polarity of Sub wootfers frequency range lt 100 Hz Measurement results area with negative polarity The black line in the middle of relative level indicator 5 displays the measured polarity of the individual frequency band The dashed line indicates the lower limit of the measurement result area Polarity results for frequency bands in this area are uncer tain Therefore the polarity result
30. Level 64 S9dB HOnITOR Event count HABA INTi AUDIO 55 INTi Sound Level Meter AUDIO Event D Event Duration N WY JN WY key press a Level dB key press Ne Time seconds Features e The levels LAeg LZeq and LCPeak are recorded for the event duration e Audio data may be recorded for the user defined event dura tion 15 after the keypress e Retrigger with every repeated keypress within the event du ration 56 Meee Et LAR E i ast 13 52 S Trigger Events on ext keypress Min Event Duration 15 Log Audio Events Onky Format Compressed AGl Status Stopped HOnITOR Event count Choose from the following settings Off No event triggering onlevel Events are triggered at noise levels above the above preset value 2 for the start duration 3 on level Events are triggered at noise levels below the below preset value 2 for the start duration 3 on ext Events are triggered by external keypress keypress Set the level at which the triggered event is started 13 The event start is triggered when the noise level is higher or lower than the preset value and continues for the pre set duration Sound Level Meter INTi AUDIO Set the level at which the triggered event is stopped on level Stop level Start level 2 Hysteresis 14 above on level Stop level Start level 2 Hysteresis 14 below 12 The event stop is triggered when t
31. STIPA Option with STIPA functionality Remote Measurement Option supporting SLMeter RTA and RMS THD N function 205 INTi Appendix AUDIO You may start up the XL2 with individual preset application pro files The following limits apply at all areas accessible by the visitors during the measurement period of 30 minutes e Maximum averaged level 99 dB The XL2 displays this maximum level with the measure ment result LAeg k1 e Maximum peak level LCpeak 135 dB OTHISS65 5 amp Audio wl Meee et LRAD 9 ast 15 36 S 5LY IBGE k SLY IBGE amp Audio k Laeggtki 93 9aB Leg 92 7 dB LoPEmax ke 1 1 0 dB i lll SET OO 30 00 The profile Full mode is the default configuration with all avail SO PHGE 150 p RERET able measurement functions enabled 206 Appendix INT AUDIO These levels are shown in the numeric result page Select the page KSET with the rotary wheel kz LAeq5 k1 Time averaged sound pressure level LAeq with correction value k1 and a moving time e Measure the correction values k1 and k2 as described in the window of 5 seconds chapter Correction Value KSET L l e Press the start button Lai Aeqtk1 Time averaged sound pressure level LAeq e The icon LOG flashes during the ongoing measurement In with correction value k1 l i the case where the profile DIN15905 5 amp Audio has been selected the icon AUD flashes indicating the additional au dio wav file log
32. Spectral Limits Option extends the function range of the XL2 with trace capturing relative curve display and compre 1 12 Oct LA Gi asp 12 30 hensive tolerance handling for the FFT Analysis and the high EQ 75 2 dB ivi OCT resolution 1 12 Oct Tol spectral analysis Live CTE dE a 115 6 Hz Features e Capturing of multiple readings into the internal memory e Comparing measurement results against captures with rela tive or absolute curve display e Comprehensive tolerance handling e Creating tolerance masks based on captures for passed failed measurements ib E e250 ik 4k 16k Ae MINNI SET 40 BAG ido Cols E ARDD CiT aa a e e Confirm with enter 135 INTI Capture Tolerances AUDIO i iz Oct Cael ASO i130 S i ctfi SLA Gl asp 11 30 a 1 12 OCT Capture Et eaa E 115 Hz Manage captures 16 E 250 ik 4k 16k Z MAUN SET MMM SET o ANGE 40 EBs ME cnroa ag es o ANGE uo ESS ME cnroa a os e Select Capture EQ e Select C1 Confirm with enter Confirm with enter and set the capture name in the dis played letter selection box e g to Ref 136 Select the Capture amp Start Tolerance Mode symbol Confirm with enter Select Manage captures Confirm with enter Select Save to SD card Select the capture to be exported e g C1 Confirm with Save Edit the sound level data in the capture file You may delete any unu
33. XL2 Analyzer Test Signal CD USB cable Li Po battery Hand strap Operating manual Overview INT AUDIO 2 Overview tios Mount XL2 interfaces rone Output Digital I O USB Connector XLR Input TOSLink Output RCA Input sD Card Voice Note Input DC Power Socket INTi Overview AUDIO Either a balanced audio signal an NTi Audio measure ment microphone or the microphone pre amplifier MA220 plug directly into the XLR input The Automated Sen sor Detection ASD technology reads the electronic data sheet of any connected NTi Audio device after the 48 V microphone phantom power is activated Unbalanced audio signal input Internal microphone for recording voice notes and measur ing polarity and delay time For polarity measurements an external microphone may also be used Socket for mains power adapter Further details in the chap ter Power Supply in this manual Mini B USB connection for accessing the SD Card Programmable digital inouts outputs 11 For storing data screenshots voice notes wav files 24 bit linear PCM audio signal output For future use not active at this time The XLR RCA input signals are routed to the headphone out put Connecting headphones mutes the internal speaker To connect the headphone output directly to a line input a load impedance lt 8 kOhm is required for proper operation This can be achieved by inserting a 1 k
34. audio systems with line inputs e STIPA Test CD included INTi AUDIO Further Information NTi Audio 600 000 339 The Extended Acoustic Pack offers the following additional fea tures for sound level and acoustic measurements SLMeter RIA function Recording of linear wav files 24 bit 48 kHz Percentiles for wide band and spectrum LAF1 LAF5 LAF10 LAF50 LAF90 LAF95 LAF99 Sound Exposure Level LAF 100ms logging Event triggered audio and data recording Time weighting Impulse Lxl Lxleq with x A C Z True peak level in 1 1 and 1 3 octave resolution Clock Impulse Maximum Level TaktMax and values as specified in DIN 45645 1 FFT function High resolution Zoom FFI with selectable frequency ranges and resolution up to 0 4 Hz in the range of 5 Hz to 20 kHz RT60 function Reverberation time RI60 in 1 3 octave resolution 181 INTi AUDIO Further Information NTi Audio 600 000 375 The Remote Measurement Option allows querying of the XL2 measurement data online via the USB interface Thus custom ers may program their own measurement application on the computer e g for sound level monitoring or automated mea surement tasks The supported XL2 measurement functions are e Sound level meter and spectrum analyzer SLMeter RTA e Audio analyzer RMS THD N 182 NTi Audio 600 000 376 The Spectral Limits Option extends the XL2 function range with trace capturing relative curv
35. bands through internal micro phone or XLR RCA connector e Test signal NTi Audio polarity test signal gener ated by the MR PRO MR2 or the included NTi Audio Test C D e Actual level Leq Lmin Lmax e Selectable 1 1 1 3 1 6 and 1 12 octave spectral resolution e Capturing of multiple readings into the internal memory e Comparing measurement results against captures with relative or absolute curve display e Comprehensive tolerance handling e Creating tolerance masks based on captures for passed failed measurements e Measurements in 1 3 octave resolution according SMPTE ST 202 2010 and SMPTE RP 200 2012 e An interactive assistant guides the user through dedicated measurement procedures e Single value STI and CIS test result in accordance with IEC 60268 16 ISO 7240 16 ISO 7240 19 DIN VDE 0828 1 DIN VDE 0833 4 e Ambient noise correction e Automated averaging of measurements e Modulation indices and individual band level re sults with error indicator e Test signal NTi Audio STIPA signal generated by the MR PRO NTi Audio TalkBox or the STIPA Test CD Audio Analyzer Level RMS Frequency THD N Total Har monic Distortion Noise Scope Filter Remote Measure ment optional e True RMS detection in V dBu dBV and dBSPL e Range XLR RCA input 2 uV 25 V 112 dBu to 30 dBu e Accuracy 0 5 1 kHz e Flatness 0 1 dB 12 Hz to 21 3 kHz e Bandwidth 3 dB 5 Hz to 23 6 kHz e Resol
36. be used with a professional CD player For details see the chapter STIPA Mea surement Hints The standard STIPA signal is based on a band limited random noise of a male speech spectrum STIFA SREQRRNI A i asb 15 47 g FIHISHEC MUIINIIIIIIIIIIIIIIIIIINII INTTI 0 8 si S5 1dB STIPA STIPH Band S HZ tang Hz AAG Hz in Hz SAA Hz SHHz 125H2 123 LR i FIHISHEC Inti 0000000000000 0000000 HEATH LEL Cae dE 59 1 dE 65 1 dE r 1 2 dE TT 1 dE oA dE 20 4 dE MF1 MFe2 ASD 15 47 i SL m t INTi AUDIO 107 INTi 108 STIPA AUDIO This icon displays the run status of the STIPA measure ment e Single value speech transmission index result e Repeatability of measurement result Since a dedicated noise test signal is used the STIPA result may deviate by maximum 0 03 STI Max Min at the same measurement position Shows the time averaged sound level of the 15 seconds STIPA measurement cycle time Actual sound pressure level Bargraph display and interpretation of the speech intelligi bility measurement result e Exlnt 0 75 1 00 STI e Good 0 60 0 75 STI e Fair 0 45 0 60 STI e Poor 0 30 0 45 STI e Bad 0 00 0 30 STI The STI value is shown as a letter of the qualification scale below which informs about the typical STI requirements for dedicated applications Band STI Range A gt 0 76 A 0 72 0 76 Examples of typical uses
37. electrical recycling in accordance with the local legal regulations Contact the respective authorities for the valid environmental regulations in the country Sound Level Meter Product Con figurations Class 1 Type 1 Product Con figurations Class 2 Type 2 e XL2 with TA Option M2230 microphone and ASD Cable forms an integrating sound level meter with type approval Class 1 in accordance with IEC 61672 Type 1 in accordance with ANSI 1 4 e XL2 with M2230 microphone Class 1 In accordance with IEC 61672 Type 1 in accordance with ANSI 1 4 e XL2 with M2211 M2215 microphone Class 1 frequency response in accordance with IEC 61672 Type 1 frequency response in accordance with ANSI 1 4 These specifications apply for operation with the microphone detached using the ASD cable This prevents possible acoustic reflections from the XL2 housing and ensures a high measurement accuracy in accordance with the standards IEC 61672 and ANSI 1 4 e XL2 with M4260 microphone Class 2 in accordance with IEC 61672 Type 2 in accordance with ANSI 1 4 Specifications Conforms with Stan dards Details Weighting Linear Mea surement Range acc IEC 60804 Stabilization Time Overall Range S 42 mV Pa Integration Time INTi AUDIO e IEC 61672 IEC 60651 IEC 60804 IEC 61260 class 0 ISO 2969 e China GB T 3785 2010 GB T 3241 GB 3096 2008 GB 50526 GB T_4959 1995 e Germany DIN
38. equalizer to Level Mark 13 OCT push individual band levels aie e Switch off the gated pink noise signal after you have finished setting the pink noise level 120 g0 ATEH Aig LA Gt ast 13 24 S SET Level Markers 1 3 OCT 120 63 125 250 S00 ik ek HII g ARG 68 S0 RHGE 150 STAT STOP 63 125 250 S00 ik eck LLULLU ARG 8S a0 RAGE 150 STAT STOP Lil 82 e Press start bl The status indication switches to ARMED e Enable the test signal e g switch on the gated pink noise signal or fire a starter pistol e The black bars have to exceed the grey bars completely ATEH AE LA Gl Asb 13 24 S Level Morkers 1 3 OCT JAE 120 BO MTT TTT 63 125 250 S00 ik ck Yk Gk AVG A1 p a0 HGE 150 STAT ARMED e The RT60 calculation cycle is complete when the sound pressure level falls below the bot tom of the grey level markers in every band e Confirmation marks Indicating success ful measurements are displayed above each band Reverberation Time RI60 INTi AUDIO Using pink noise The gated pink noise test signal continues with the preset on off time The XL2 automatically triggers at each cycle Com plete a minimum of three test cycles to accurately calculate the uncertainty factor Using an impulse source Use further starter pistol shots to repeat the measurements e Press pause Lu to pause the measurement e Prepare the next impulse sound source e g starter p
39. is displayed ARMED Measurement is waiting for the test signal to exceed at least one measurement trigger marker then the measurement is triggered automatically NOISE A sound stimulus signal above the trigger marker is being received DECAY Decay is being measured PAUSE The measurement has been paused by press ing pause Lv STOP No RT60 measurement is presently being per formed Counts the measurement cycles When using a gated noise test signal a minimum of 3 sequential cycles is rec ommended Reverberation Time RI60 INTi AUDIO The black bars indicate the actual signal including back ground noise While setting up the reverberation time mea surement you should increase the test signal level until the black bars exceed the grey bars completely and the status 4 displays NOISE The grey bars indicate the signal level required for effective reverberation time measurements in each octave band The marker has a length of 35dB and can be set by e Selecting SET 1 with the rotary wheel O e Press enter to measure the environmental noise in the silent room Indicates a successful reverberation time measurement above each octave band with a tick lt Reverberation time measurement selectable in 1 3 octave or 1 1 octave band resolution 77 INTi AUDIO 48V ASD 78 Reverberation Time R 160 The XL2 provides 48 V phantom power supply to the connection microphone or sensor An NTi
40. level is near the maximum level of the connected NTi Audio measurement microphone 32 BC 12a LA E Reece g 4444 4B LAeq A Ts m LcPeak YY Ys B UNQUUTOQUUNANUUUUNOUUUI E ces RAGE t40 ent omga il SLHeter FAB SLA Gl ast 13 24 S LAF mgs 7 7 dB 173 OCT LAF Live pasira 1 5 kHz BO 40 20 alll 5 3 20 250 ak UNQUNEQUUNAQUUANUUNUIII gt eae ae 10 AGE 110 CHT aan The XL2 reads the electronic data sheet of any connected ASD microphones provided by NTi Audio and switches the 48V phantom power automatically on as follows e Connect the measurement microphone to the XL2 e Switch on the XL2 e Position the XL2 at the measurement location using a micro phone stand or a tripod e Select the SLMeter function in the measurement menu and toggle with page to the numeric result page E23 All wideband and RIA levels are measured and logged simultaneously You select which sound levels should be displayed Sound Level Meter INTi AUDIO This example describes the setting of the commonly used ac tual sound pressure level Lar frequency weighting A time weighting F e Select the first parameter setting with the rotary wheel gt Confirm with enter SLMeter 123 LAR E lt ast 13 24 S 40 3dB Lieg LAF max M dB UNQUIANUUUUI SET il F HGE 140 Eoo ioppo Da l Press start Pm to measure and display the sound levels results indicated with 33 INTi S
41. manually set in the page KSET of the sound level meter function Application Measurements in accordance with SLV The actual measurement position often differs to the loudest posi tion of the live event Thus the correction value k2 is the correc tion value of LCpeak between the loudest position and the actual measurement position measured using pink noise The correc tion value k2 is measured or manually set in the page KSET of the sound level meter function INTi AUDIO 217 INTI Appendix AUDIO _ pone gt az a The statistical distribution of sound pressure levels is commonly HORE 7 gt used for environmental noise analysis such as road traffic or com munity noise assessments LAFyx IS the noise level exceeded during xx of the measurement period e g LA F90 is the noise level exceeded during 90 of the measurement period Please see the specifications at chapter Techni cal Data XL2 gt Functions of Extended Acoustic Pack optional in this manual Sound Level dB vs Time LAF10 88 8dB LAeg 84 2dB 904 804 LAF50 76 4dB 70 LAF90 66 6dB 60 Time seconds 218 LEX Appendix INTI AUDIO The Noise at Work Directive 2003 10 EC lays down minimum re AJ EQ quirements for the protection of workers from risks to their health and safety arising or likely to arise from exposure to noise and in particular the risk to hearing Steady noise Lex g
42. possible input range according to the maximum level expected during the measurement e g if the sound pressure will be always below 110 dBSPL then select the lowest input range 10 110 dBSPL Offers selectable time weighting of 0 1 0 2 0 5 and 1 0 second Applications Short Time High resolution in time with minimum Weighting averaging Long Time Low resolution in time with longer aver Weighting aging 1 12 Octave Tolerance INTi AUDIO The run indication shows the measurement status running paused or stopped Various measurement settings are locked during ongoing measurements such as changing the Input ranging or the preset measurement time For passed failed measurements with the Spectral Limits option the run indication may display A for a preset auto mated level trigger Counts actual measurement time in hrs min sec Supports setting of time modes continuous and single Clit applicable for standard measurements All values are recorded and monitored continu ously after starting a measurement with start Dal The actual measurement time is shown Automatically stops the measurement after the pre set measurement time e Set the required measurement time e Start the measurement La 99 INTI 1 12 Octave Tolerance AUDI 9 11 Adjustment of preset measurement time for single timer You may select any frequency to read out individual levels setting The selected frequency is indicated by the cursor a
43. previously stored result data from the SD Card for detailed examination on the instrument screen The append mode stores one or more results into the same data Tile simplifying data analysis and handling on the PC Application example The speech intelligibility STIPA shall be measured at vari ous locations in the same venue The append mode allows you to store all individual measurement results into one single data Tile Displays the remaining available memory on the SD Card Data Management 10 INTi AUDIO A low Write Cache level indicates a good perform ing SD Card The optional Extended Acoustic Pack with simultaneous 100ms logging and linear wav file recording result in a high data volume written onto the SD Card Some non original SD Cards may cause OVLD performance thus loose some measurement data Verify the Write Cache of your SD Card during your measurements Subsequently an original SD Card shall be used We recommend SD Cards of the manufacturers SanDisk and Transcend Original SD Cards ensure that all measurement data and audio wav files are stored in good or der on the SD Card Non original SD Cards may lead to low performance or error messages Order information see chapter Accessories In case the SD Card is full you can insert the original spare SD Card into the XL2 and contin ue with the measurements The XL2 generates the projects and system folders automatically 155 INTi Data Management AU
44. recording studios theatres speech auditoria parliaments courts B 0 68 0 72 theatres speech auditoria parliaments courts C 0 64 0 68 teleconference theatres D 0 60 0 64 class rooms concert halls E 0 56 0 60 concert halls modern churches F 0 52 0 56 PA in shopping malls public offices cathedrals G 0 48 0 52 PA in shopping malls public offices PA in difficult acoustic environments H 0 44 0 48 0 40 0 44 PA in very difficult spaces J 0 36 0 40 not suitable for PA systems U lt 0 36 not suitable for PA systems The STIPA result is displayed in STI Speech Transmission Index or CIS Common Intelligibility Scale whereby CIS is calculated as CIS 1 log STI ed4 0 actual edition released in 2011 with continuous level dependent auditory masking function ed3 0 old edition released in 2003 with stepped level dependent auditory masking function ed2 0 old edition released in 1998 with fixed masking function Comparison of the IEC 60268 16 Editions 1 T 0 9 ep S gt 08 D 2 edition 2 0 1998 0 7 T edition 3 0 2003 0 6 edition 4 0 2011 0 5 20 40 60 80 100 Level Lig STIPA INTi AUDIO Measurement status indication the single STIPA measure ments takes 15 seconds The actual measurement time and measurement status are indicated here Select between these pages Speech intelligibility measurement result Table result page with modulation indexes
45. sheet is recognized by the XL2 The automated sensor detection does not disturo any measure ments You may join up to 4x ASD Cables together in series The ASD technology supports accurate data communication up to a combined cable length of 20 meters 65 feet For distances longer than 20 meter 65 feet use a high qual ity low capacitance standard professional audio cable The mi crophone sensitivity has to be entered manually into the XL2 Analyzer Alternatively connect the microphone first directly to the Ana lyzer The XL2 reads the sensitivity and remembers this value Afterwards connect the audio cable 176 Use the microphone for the intended purpose only Protect the microphone from contamination by always using the supplied windscreen Never use the microphone in a damp or wet environment Do not jar or drop the microphone Do not remove the microphone protective grid Do not touch the microphone membrane Remove the black dust cap of the 1 2 measurement microphones prior to use Further Information INTi AUDIO Register your instruments at My NTi Audio and benefit from the following possibilities e Open the web page http my nti audio com e Free updates for your instruments e You are prompted to login or create your My NTi Audio e Activation of optional product functions account e Premium access to downloads e The web page My NTi Audio Products opens e Receive application and product n
46. test signal Highpass 19 kHz e g to measure a 20 kHz pilot tone level of a public address system without disturbing the public Bandpass filter 22 4 Hz 22 4 kHz IEC 468 4 121 INTi Audio Analyzer 122 AUDIO Measures the absolute level of the input signal The unit s dBu dBV V and dBSPL are selectable Measures the total harmonic distortion and noise of the input signal The distortion measurement expressed in dB linear or in is conducted within the bandwidth 10 Hz 20 kHz The XL2 automatically extracts and measures the frequen cy of the fundamental signal The XL2 frequency counter technology even reads the frequency correctly for heavily distorted signals Indication of the audio signal balance between pin 2 and 3 on the XLR input for input signals gt 34 dBu The input signal is balanced p The signal is unbalanced The level at pin 2 is higher than at pin 3 F The signal is unbalanced The level at pin 3 is higher than at pin 2 The input signal is audible at the rear speaker or headphone output e Press and hold down the speaker button AMS THO LA E 17 45 a a3 Aer AW EKSH TINS LYLAHS Fha F Volume 6 4 Et B LI DANOOOOOET OTNI THO B0 OdE 80 Goa Pre Hotch ae 1 00000 kHz The main frequency component is filtered out by a notch filter leaving only the remaining sig nal audible e Press the speaker button to display the vol ume window e Addit
47. the instrument s serial number 12 Displays the options installed on the XL2 Every installed option may be temporarily Hidden to gener ate a profile for other XL2s without this option installed e Select the installed option e Toggle with enter to set this parameter Scheduler INTi AUDIO The XL2 Analyzer offers automated scheduled measurements without any human interaction You may schedule a measure ment for one or multiple days See sch Gl ast 44 07 e Selects the preset measurement function Cedig e Standby until start time gt oe ee e Starts measurement at start time e Stops measurement after the preset measurement duration e Stores measurement data to SD Card no reconfirmation re quired e Stops schedule or standby until next start time 3 oration GE iDo 4 Recurrence On 5 Days Mo Tu He Th Fr 6 End after BS occurences 7 Start Schedule Supported measurement functions e SLMeter RIA e FFT Tol e RT60 e 1 12 Oct Tol e STIPA 151 INTi Scheduler 152 AUDIO Select the measurement functions for the scheduled mea surements Set the date for the scheduled measurement s e Select Start with the rotary wheel Confirm with enter Set the date with the rotary wheel e Confirm each setting with enter Set the time for the scheduled measurement e Select the T symbol to the right of the date with the ro tary wheel Confirm with enter
48. to capture the reading e Select the upper RTA parameter 15 and choose Capt Confirm with enter Actual level result of the indicated frequency band The cur sor readout displays the center frequency and the level of the band pointed to by the arrow Upper parameter displayed as line uu Lower parameter displayed as bargraph 29 INTi 30 Sound Level Meter AUDIO e Select the YAxis with the rotary wheel and confirm with enter e Select the zoom factor between 20 10 5 2 5 dB div and confirm with enter e Scroll up and down with the rotary wheel amp to select the Yaxis range Confirm with enter Real time analyzer results in 1 1 octave or 1 3 octave band resolution Adjust the resolution at 7 Toggles X scale range between 20 Hz 20 kHz RTA levels including wide band results 6 3 Hz 8 kHz RTA levels including wide band results 6 3 Hz 20kHz RTA levels e Select the X Axis with the rotary wheel and confirm with enter e Toggle with the rotary wheel k3 between the ranges Confirm with enter 15 16 Actual sound level with time weighting F Fast A A weighted broadband sound pressure level Z Broadband sound pressure level without any fre quency weighting You may select any frequency to read out individual levels The selected frequency is indicated by the cursor arrow Choose between the following settings The cursor follows automatically the highest le
49. to measure the sound level at the loudest position accessible by the audience Setting up any sound level measurement at this loudest location Is typi cally not practical thus an alternative measurement position Is chosen The recommended measurement position in order to minimize the influence that audience noise has on the mea surement e Mount the measurement microphone in front of the main Speakers e Position the XL2 Analyzer at front of house FOH e Connect the XL2 Analyzer and measurement microphone using a professional audio cable eeann Positioning the measurement microphone at front of house FOH may result in audience N J noise interfering with the measurement results The audience noise will be further amplified by the measured k values 44 Level Differenc Prior to the start of the live event the level difference between the loudest and the measurement position is measured The XL2 Analyzer calculates the level difference automatically based on the individual sound level measurements at both locations This level difference is included in the sound level reading dur ing the live event and the XL2 thereby displays and records the sound pressure level of the loudest point V easurement Position Microphone Level difference oudest audience area Audience XL2 positioned at FOH Position Sound Level Meter INTi AUDIO Play a pink noise signal at the typical sound pressur
50. with enter q SBi les SLA Gl asb 13 24 LAF Lied area S ee 52 0d0B a TTT g set ni 10 ANGE 210 cnt oon on LAeq ne LAF max ee dB e Select further sound pressure levels as described above TT SET 8 9 LAeg aNd LAFmax s0 RHGEiS0 Loh MO cn opopog The numeric result page and the real time ana lyzer page use the same input range 36 e The XL2 is ready to measure the sound levels Lar LAgg and LAFmax e Press start pm LAeq LAF max TILIL il RHGE 110 SLHeter FAHRLI ASD 13 24 S 47 7 B 43 6 dE 61 8dqdB p SET cnt OO H Sound Level Meter e Press stop gt m to stop the measurement LHeter ie 38 2dB Lieq 4 db LAF max 68 2dB DARAAN gao n 10 AGE t40 Cnt ogno 30 INTi AUDIO 37 INTi e Select the memory menu with the rotary wheel amp and AUDIO Sound Level Meter confirm with enter e Press enter to store the test results as an ASCIl file or select Save Screenshot to store the screenshot 38 SLMeter 123K LAE 7 4 ast 13 24 S FOLDER MEH DIR LAF HyFroject Homing Soving manual Saye Test 5gave Screenshot Logd Test COLLECT RESULTS IN OME FILE i Heq Gl 3323 SnevTE FREE HRITE LaF max CACHE EHFTY DUNUUUOUUNUNUUUIII gt GET 10 ANGE 110 ChT oon 30 The XL2 stores the numeric sound pressure levels and the real time analyzer results simul taneousl
51. 00 Specifications M2230 M2211 M2210 M2215 M4260 Class 1 Certified Frequency Response High SPL Class 2 Class 1 Frequency Response Class 1 lt 0 05 dB lt 0 4 dB 5 to 90 RH non condensing gt 250 years dB NTi Audio ASD in accordance with IEEE P1451 4 V1 0 Class 2 Template 27 100 Ohm balanced 48 VDC phantom power 3 mA typical Balanced 3 pole XLR 20 5 mm 0 8 154 mm 6 1 150 mm 5 9 100 g 3 53 oz 3 g 2 93 oz 600 040 050 600 040 022 600 040 045 600 040 025 Specifications INTI AUDIO Typical Frequency Response M2230 M2211 M4260 M2210 M2215 Tolerance ee l Class 1 IEC61672 1 SS EEEE a E ee eee Sensitivity relative dB No 6 Tolerance g Class 2 IEC61672 1 5 10 20 100 1000 10000 20000 log frequency Hz free field conditions reference direction 0 201 INTi Specifications AUDIO Linear Measurement Range XL2 M2230 23 1 dB A 139 dB in accordance with IEC 60804 Level aB Input Level XL2 M2211 30 dB A 144 dB 50 di A i oF j dA 40 dE 20 d Ai AA wi lA an A Bn A 202 XL2 M4260 35 dB A 144 dB Level 50 dB 40 dB 14260 30 dB A a N GEE i A Sound Level Meter Frequency Weighting Sound Level Meter Time weighting Sound Level Meter Corre
52. 2 is powered up Useful for ex connect mode after connecting the XL2 to the PC ample when it is common to measure lines Mass The PC recognizes the XL2 as a mass storage storage device automatically allowing you to down Remember The XL2 remembers the setting prior to load XL2 measurement reports the last shutdown default setting COM The PC recognizes the XL2 as a COM port au 8 port tomatically for application of the XL2 Projector Enables disables the rear speaker For example it is recom and the Remote Measurement Option mended that the rear speaker be disabled for all acoustic measurements This prevents measuring the audio feed 10 back sound loop generated through the rear speaker Set the decimal separator to match the generated mea surement reports to the PC settings This simplifies data post processing on the PC e Navigate to the Dec Separator function 8 with the ro tary wheel e Toggle between and with enter to set this parameter 149 INTi System Settings Systen Imt Pee AUDIO 11 Firmwore 12 Serial number 13 Options Extend Acoustic ST IFA Remote Measurimnt Spectral Limits Cinema Assistant Type Approved 150 eS A2A 2311 02 Installed Installed Installed Installed Installed Hot installed Displays of the firmware version number 11 to update the firmware to the latest version see the chapter Firmware Update of XL2 Displays
53. 25 Ode ASD 15 47 a ed4 4 LAeq dB 111 INTi Slip AUDIO e Press start Pm After the period of 15 seconds the STIPA measurement fin ishes automatically The progress bar indications switches to FINISHED and the final STIPA test result is displayed e Switch off the STIPA test signal STIFA REQ RRNI A i asb 15 47 g STIFA 12i lLA E Rue g RUHHIHG VIIIIIIIIIIIIIIIIIIIIIIINNNI TNI FIHISHEDC MUIIIIIIIIIIIIIIIIIIIIINNII ITTI 0 87 sT 0 87 sT LAeq 55 1dB LAeq 05 1 dB Las 2R 0dB Las 2R 0dB 112 e To store the test result select the memory menu with the rotary wheel k and press enter e Select Save Test to store the test results as an ASCIl file or select Screenshot to store the screenshot STIPA INTI AUDIO The standard IEC 60268 16 recommends averaging two or three subsequent results taken at the same measurement lo cation The German Standard VDE 0833 4 requires performing mini mum three subsequent measurements for one measurement position in case of STI lt 0 63 The XL2 Analyzer offers automated averaging of two up to eight STIPA results based on these standard requirements 113 AUDIO e Select the averaging page Avr e Press enter to confirm Add Cycle STI FA Awre LAR Bl asp 15 47 a STIFA Awre LAR Bl asp 15 45 S Averaging Averaging Cycle Reading Cycle Reading l HSSESTI Add Cycle Repeat last Finish a A n D S 6sty AQ
54. 322S HEYTE FREE WRITE i 5 CACHE EHFTY OULD SET caT sae ro Re Le iT If the battery runs empty while you are measur ing with logging and or repeated reporting en abled the XL2 creates the folder RESTORE_AF TER_POWERFAIL and stores the measurement data up until the switch off time The next time you switch on the XL2 the following window informs you that this data exists Click OK Restore Data Incomplete Data sawed in folder RES TORE_AF TER_ POMERFAIL Initializing The files may contain invalid data at the end of the file which you may delete to create a valid report Data Management e Connect the XL2 with the USB cable to the PC SLMeter 123 LAR E lt ast 17 01 S USE Hode Select USE mode LAF Woe COH port Buick charge LE SHITCHES OFF FOR CHARGING MMIII SET W RAGE 140 Eo ioppo e Select Mass Storage and confirm with enter INTi AUDIO 161 INTi AUDIO Data Management Peers Projects autorun inf AR E e Open the folder Projects and the subfolder MyProject 162 If the XL2 is started with USB connection to PC then the COM port mode is automatically activated for remote measurement or the XL2 Projector software Therefore if you want to access the data in the SD Card then start the XL2 first and connect the USB cable to the PC afterwards 1 2 MyTesk SLM O00 123 Log txt 3 E My Test SLM O00 123 Re
55. 6 Broadband Results End 2011 05 15 17 44 16 Start Stop LCPKmax Broadband LOG Results 3 dB 15 11 2010 17 44 06 15 11 2010 17 44 16 119 0 A Microsoft Excel form generating an automated sound level 15 11 2010 17 44 15 00 00 09 79 3 89 9 81 6 97 9 measurement report and chart is available as a free download for all registered XL2 customers on the support website at http my nti audio com Enable all macros when opening the document Level of actual logging interval e g Logging interval 1 second then LAeg_dt Is the time averaged level of the past 1 second 164 The straight forward but powerful Load Test and Save Test functions serve the dual purpose of conveniently retrieving standard test setups for repeat testing and also of saving stored result data for later recall and examination on screen The following measurement functions support the recall func tion e SLMeter sound level meter e FFT Analysis e RI6O reverberation time e STIPA speech intelligibility measurement Data Management INTi AUDIO e Select the memory menu with the rotary wheel amp and confirm with enter FULDER MEH DIR LAF HyFroject m Homing Saving manual Save Test 5gave Screenshot COLLECT RESULTS IN ONE FILE Start Append Mode Lied Gl 3323 5 HEVTE FREE HRITE LEPE CACHE EHPTY II BET ee araa 30 AHGE 130 a CNT Go po SLMeter 123 08L Al Bl ase 13 24 a 165
56. 7 is CYC xx or Last Individual cycle results may be deleted thereby excluding them from the calculation of the AVRG result The sound source shall be as omnidirectional as possible Use either a gated pink noise or an impulse source as the test signal e Gated pink noise Various gated pink noise test signals with different on off times are offered by the NTi Audio Test CD included with the XL2 or the Minirator signal generator e Impulse The trigger signal is a generated impulse source such as a Starter pistol Individual measurements or test sequences with re peated trigger signals can be carried out Ideally the XL2 should measure the reverbera tion time of several on off cycles and automati cally average the reverberation time results The uncertainty factor is calculated after a minimum of three measurement cycles Play a pink noise signal through an omni directional speaker In the room under test The sound source should be played for a long enough time period to ensure that a balance between injected and absorbed acoustic energy has been reached For example the sound reflections should be given enough time to reach all reflective surfaces in the room As a rule of thumb ensure that the pink noise is played for at least the time period of the estimated RT60 test result If in doubt play the Minirator MR PRO or the Test Signal CD as sound source for at least 5 seconds for each cycle Each time the source signal stops
57. AGE 5 Format eB t_4 skH2 6 Log olues Selected Log olues 7 a LAeq S 7 0 Leg 1 LAF imax E 1 LAF LAF min Ls E 3 LOPE max H J g The optional Extended Acoustic Pack offers 100 ms logging 49 INTi AUDIO Sound Level Meter Select Logging with the rotary wheel and press enter to enable the automated logging of test results every n sec The XL2 logs measurement data every interval dt 2 every 100ms The XL2 logs measurement data every 100 ms fixed off No Logging Adjust the logging interval Select Yes to log additionally the RTA spectrum at each log ging interval 50 4 The XL2 logs audio data as a wav file Choose amongst the following settings Off Audio logging is off On Audio logging is activate from mea surement start to stop Events Only Audio logging of triggered events only For more details read the chapters Wav File Recording and Events Sound Level Meter INTi AUDIO 7 Choose amongst the following audio format recording set By setting Selected at 5 up to 10 individual log values can tings be chosen e Select the first value Lxx with the rotary wheel and Compressed Compressed audio logging press enter Compressed AGC Compressed audio logging with level i automated gain control e Select the logging level with the rotary wheel 3 and con firm with enter 24Bit_48kHz Linear audio logging in 24 bit 48 kHz resol
58. Audio measurement microphone with automated sensor detection ASD is connect ed The XL2 reads the electronic data sheet of the microphone and switches the 48V phan tom power automatically on Phantom power is switched off Select between the RT60 run page and the test result page The page button toggles between these displays RT60 run page RT60 result page Toggle with the measurement result selection 17 amongst AVRG RT60 result page showing average of all cycles and uncertainty factor CYC xx RI60 result page for each cycle Last RT60 result page for last cycle Reverberation time in seconds The scaling is automatically adjusted The uncertainty factor is displayed in the RI60 average re sult page It indicates the uncertainty of the averaged mea surement results reduces as more cycles are measured and depends on the measured reverberation time and the bandwidth of the individual frequency band lower bands show a higher uncertainty factor The number of measure ment cycles is displayed at 6 Readout of reverberation time and uncertainty factor Uncertainty factor For more details see 3 Reverberation time measurement results RI60 Octave Bands 63Hz 8 kHz Select the individual frequency band and read out the fol lowing numeric measurement results e Uncertainty factor in or correlation in e Reverberation time RI60 T20 of the selected frequen cy band in seconds s Reverberation Time RI60
59. DIO Mame l am e Select the Log page in the sound level meter function and Pautorun in set the logging parameters e g as follows 1 Projects 2 amp xl2 htm 3 LAL sys SLMeter Log MLA Gl aso 12 05 a Logging On Interuol dti SO 00 0 The folder Projects contains subfolders with the stored Add Spectra Ho measurement results The default subfolder name is Log Audio On MyProject You can create further individual subfolders Format Compressed AGC i Log Volues Selected 3 l 0 Leq a This file opens the XL2 Instrument status page with 1 Lar mase ETE e Serial Number Firmware 2 LAFmin 1 e Installed Options 3 LPR mas H y g as well serves for online e Firmware updates e Activation of options The XL2 system folder contains a file with serial number firmware version and installed options 156 Data Management INTi AUDIO e Select the Rep page in the sound level meter function and Press page to return to the numeric result page set the parameters as follows e Press start Dl The sound level measurement is now run ning e Press stop bal to complete the sound level measurement Seva Ree LA Bt ast 13 24 g Report Setting Add Spectra All Report VWolues Selected 0 LAeq 1 LOPK max p B n J y wow O e M n I I I 157 INTi e Select the memory menu with the rotary wheel amp and AUDIO Data Management confirm with enter
60. Data Management INTi AUDIO e Move to the next location in the room carry out the mea surement and follow the described append data procedure e Select the location ID and measurement ID thus each mea surement result is stored with an individual description for later documentation e Open the memory menu LBL RA ill with the rotary wheel and confirm with Select Exit Append after adding the last measurement enter SLMeter 123 KLAE T ast 13 24 a Append Data Li vacaTron ID RENAHE HEAS ID EDIT Alternatively the XL2 can append measurement MyLocation ai data to the same report file automatically e Start the Append mode and set Auto Append is ON in the memory menu or in the pop up LAF A 6 l 6 dl B window Start Append Mode LAF max 440 g l If you select SKIP in the Append Data window at PNE aa E a ee then no measurement data is appended to the report file 169 INTi Data Management AUDIO You can continue to add measurement results into the same Any previously stored measurement with the remark for ap data Tile at any time later pend can be recalled and further test records appended e Store the measurements in the append mode and switch the Select Load Test and press enter XL2 off and on again e Select the project folder and stored data file name Select LOAD confirm with enter SLMeter 123 LAR E lt ast 13 24 S Leq Load for Append ES HyTest SLH_AH ls sto
61. E Out 3 2 9R 68dB ond amp 596 0dE Out 4 EWAdE ond 6 dE You may import the log files into a report generator soft ware based on MS Excel providing automatically completed live event reports with noise level charts The report genera tor software is a free download on the support website at http my nti audio com for all registered XL2 customers Capt Applicable for most common sound pressure level measurements compensating for human hearing perception at lower sound pressure levels Applicable for very high sound pressure levels compensating for human hearing perception at high sound pressure levels typically used for mea surements of peak values e g LCpeak This selection offers the reference curve which has been previously stored with Capture in the spec trum analyzer of the SLMeter function Application example e Comparing the performance of the left and right speakers in a live event sound setup Appendix E a INTi AUDIO The sound exposure level LAE is the LAeg normal ized to 1 second The sound exposure level is mea sured to compare noise events with different time durations The LAF reports the amount of noise from an event such as an individual aircraft fly over LAE LAeg 10 x log time in seconds with selectable time intervals of 5 seconds 10 min utes 15 minutes or 60 minutes The moving time average sound level is an Leq based on a moving time window Sample
62. INTi AUDIO Data Management e Select Load Test and confirm with enter e Select the project folder and stored data DIR SL Heter 123 4 Chl fl lt ast 13 24 S FOLDER MEH DIR I LOAD TEST FOLDER DIR HFroject File DIR Hy Test SLN AHH CAHCEL HRITE LEPE CACHE EHFTY spssgad 30 ANGE 230 MY cnogain e Select LOAD confirm with enter 166 SLMeter mie ASD 13 24 file name with 90 2dB LAeg 90 1dB LEFKE 51 9dqE ay et acct 40 ANGE 130 Cnt GOOG oo The run indication 1 shows the pause symbol You may continue with the measurements di rectly e g choose the measurement function setup parameters and press start Dal The append mode stores the results of several individual mea surements into the same data file thus simplifying measure ment result analysis and data handling on the PC The following measurement functions support the append mode e SLMeter sound level meter e STIPA speech intelligibility measurement Application example The sound level LAeg shall be measured at various locations in the same venue hall using a pink noise test signal The append mode allows to store all individual measurement results into one single data Tile Backup the stored measurement data from the XL2 to the PC daily This prevents any data loss if data has been deleted from the SD Card by mistake INTi AUDIO Data Management e Select SLMeter and preselec
63. ITCHES OFF FOR CHARGING TT 30 PHGE 130 E 171 INTi AUDIO XL2 Projector e Select COM port on the XL2 Microsoft Windows may rec ognize the new hardware automatically and start the hard ware Installation assistant e f prompted select No connection to Windows Update and continue with the installation e Complete the installation XL2 Projector displays the instrument screen in real time Features e The upper window bar displays the XL2 serial number e The menu bar supports remote instrument operation of the XL2 Analyzer from your PC e All data stored on the SD Card can be accessed directly from the XL2 Projector software Complete your measurements and click on the SD Card symbol For more details and features click the symbol on the XL2 Projector Software 172 xiz XL2 Projector 2 0 A 2A 03199 L gt escihm i F q SLMeter 123 LR 4 asp 16 33 LAeg5 ki LAegtkl LoPKmax ke IIll SET Do Sto 30 AGE 150 GS Go co Sox 14 Monitoring Network Multiple XL2 Analyzers connect with USB Device Servers to a network for online monitoring of noise or other signals An instance of the Projector Software may be started for each XL2 Analyzer with all XL2 screens being simultaneously displayed on the PC monitor The Projector Software offers the control of each XL2 Analyzer from your PC LAN WAN Network Please contact NTi Audio for application details I
64. LOO0 i aa p Bad int AA e urn the rotary wheel to select the parameter START Repeat the measurement at the same position as required NEW and press enter 114 STIPA INTi The symbol indicates that the averaged STI value is dis e Choose Finish to end the averaging played STIFA Avr LA E 4 aso 15 47 S ee Averaging PR tes ALA Gl ast 15 47 a FIHISHEC MMIII ed4 4 oT Cycle Reading Add Cycle 3 ASHSSTI y fe 0 85 E OS5strv AGLOSA ee 8 Exlnt At AUDIO Measuring the speech intelligibility index under realistic en vironmental conditions is often not feasible e g playing the test signal in a railway station at emergency levels during peak hours will irritate passengers Additionally at rush hour the characteristics of ambient noise might be highly impulsive while a pre requisite for accurate STIPA measurements is a negligible impulsivity in the ambient noise Under such circum stances the STIPA measurement should be shifted to a more Suitable time of the day e g night time e First measure the ambient noise e Secondly measure the speech intelligibility STIPA This sequence simplifies the STIPA measure ment as follows The XL2 immediately displays the STIPA result with ambient noise correction This result provides a guideline if repeated mea surements at the same location with averaging is required For more details see the hints at the end of this STI
65. NTi AUDIO XL2 Projector 15 Remote Measurement The XL2 Analyzer offers an optional remote measurement func tion This allows querying the XL2 measurement data online via the USB interface Thus customers may program their own measurement application on the computer e g for sound level monitoring or automated measurement tasks The supported XL2 measurement functions are e Sound level meter and spectrum analyzer SLMeter RIA e Audio analyzer RMS THD N The commands are send in ASCII format through the virtual COM port to the XL2 Audio and Acoustic Analyzer Example e Command set send to XL2 Analyzer INIT START MEAS INIT MEAS SLM 123 LAF e Result returned to PC 53 8 dB OK For more details you may download the individual Remote Measurement Reference Manual at www nti audio com XL2 Order information NTi Audio 600 000 339 173 INTI Microphones Certified Class 1 General purpose For high sound levels Cost effective class 2 Microphone measurement microphone up to 153 dB measurement preamplifier microphone according Class 1 frequency Class 1 frequency microphone for general compatible with to IEC 61672 response response sound level testing 1 2 pre polarized Metal diaphragm Metal diaphragm Metal diaphragm commissioning and capsules service of audio acoustic installations 174 The plug on measurement microphones combined with the XL2 Analyzer form a comprehensive sound level meter and acoustic anal
66. NTi Audio 600 000 018 The Everready Pouch protects the XL2 during transport and operation With its convenient belt clip the XL2 can be kept close by for those tasks requiring both hands The Everready Pouch allows oper ation of the XL2 while fitted in the pouch NTi Audio 600 000 335 Further Information INTi AUDIO Mains Power Adapter the XL2 Audio and Acoustic Analyzer with removable plug types The Mains Power Adapter suits the typical power sockets in Australia China Europe Japan US and UK NTi Audio 600 000 333 Rechargeable spare battery for portable measurements at any time NTi Audio 600 000 337 Connects to the XL2 and generates ICP power supply for alternative microphones or sensors Specifications sensor sensitivity 50 mV Pa and out put impedance lt 100 Ohm e Residual Noise Floor typical 17 dB A e Maximum SPL 140 dB NTi Audio 600 010 223 ICP is a registered trademark of PCB Piezotronics 187 INTi AUDIO 188 Further Information The ASD Cable allows for extended con nections of the NTi Audio measurement microphones It supports the transfer of the electronic data sheet from the micro phone to the XL2 Analyzer You may chain up to 4x ASD Cables together in tandem Length 5 meter 16 feet NTi Audio 600 000 336 This compact system case provides the professional transport protection for work in the field It offers space for the hand he
67. Ohm resistance be tween tip and ground of the output jack The XLR RCA input signals are routed to the speaker Press the speaker button to toggle the speaker on off Press and hold the speaker button to access the volume control Set the speaker level with the rotary wheel Mechanical mount for attaching the XL2 to a tripod or mi crophone stand Overview INTI AUDIO 2 e Press the button briefly to enable or disable the speak er e Press and hold the speaker button AMS THO LA E 17 45 a a3 Eee E W EKSH TINS LYLAHS Fa F 2 3 4 Volume cad U UQUUUUNANAUUUAAANAT B0 OdE 80 Tann Fre Hotch dB FREH 1 0000 kHz Switches amongst various screens depending on the menu function selected INTi Overview AUDIO e Hold the speaker button down and adjust the level of the speaker and headphone outputs with the rotary wheel amp Digital gain control prevents gain increases be yond a level that will cause signal clipping The maximum gain setting depends on the connected Input signal e The headphone output provides a linear output signal using the SLMeter function for input levels of approx 30 dBu and higher The power button switches the instrument on The XL2 is immediately ready for operation Holding down the power button for one second switches the XL2 off Additionally a brief press of the power button toggles the backlight during operation
68. PA chapter 116 e Select the correction page Cor e Turn the rotary wheel to select the parameter Ambient Noise Correction and press enter Holse to odd HEASURE aH S Lib SANE SOURCE OF DATA Bod STIFA Cor LR E SHAH Hz SHAR HZ Aai Hz LBBB H2 SHA HZ S Hz i25 Hz Default Settings ASD 16 20 S Ambient Holse Correction Bond LEG ELIT 56 2 dE E 1 2 dE bre dE fi dE r3 dE ped dE fed dE New announcement systems are commissioned e g at public areas prior the grand opening Thus the actual ambient noise caused by the public is not available yet during the STIPA mea surement Here you may simulate the real life condition with ambient noise data enabled by one of the following modes e Utilize a reference noise file which might be applicable for the actual project Measure the ambient noise at another similar project and store this as reference noise file Back on the actual project select the parameter Load with the rotary wheel amp and press enter Select the reference noise file which shall be utilized as ambient noise correction for your STIPA measurements e Edit actual noise data Select the parameter Edit with the rotary wheel and press enter Turn the rotary wheel to adjust the noise level Press enter to select the next frequency band Next go to STIPA Measurements Skip the next step Mea sure Ambient Noise STIPA INTi
69. RE Ms 4 13 45 i Delay Time INTi AUDIO e Start the delay test signal at soeaker A mute speaker B e Position yourself with the XL2 at the measurement position next to speaker B sub left as indicated above This is the worst case position in the auditorium with regard to acoustic delay in the sound field The XL2 uses the VoiceNote micro phone for the delay test do not connect any measurement microphone HAm Act 7777 ms Distance ZAP i UVQQQQQUUOONNONQQQUUOONNNQQQUUTONUONQQQUUOONNNQQQUUUOONNSQQQUUUOONOSQQUUUUUUII 00 00 Hegzure 05 00 e Disconnect the audio cable with the synchronizing signal from the XL2 allowing you to move around freely for the delay measurement When selecting Minirator as the delay signal source the XL2 has to be synchronized to the signal source again after 5 minutes When selecting CD Player as the delay signal source the XL2 has to be synchronized to the signal source every 100 seconds 13 45 S Delay Signal B ice MWinirater Act Delo ae 60 5ms A Ams Act BOG ms Distance ZAC A0 Orm UNQUITNQUTUQUUNUNUNUNUUNUNUUTENQUUONOUONNUUOUNQUONOQUONNGUONEQUONEQUUNNNTT 00 00 Hegzure 05 00 93 INTI Delay Time AUDIO e Select the displayed 0 0 ms below Act Delay with the rotary e Start the delay test signal at soeaker B Mute speaker A wheel amp and press enter e Position yourself with the XL2 at the shown measurement position T
70. Ti AUDIO After a completed measurement the memory symbol 9 indicates a non saved measurement report Your measure The battery symbol indicates the battery status as follows ment needs to be stored manually For more details visit the chapter Data Management Using rechargeable Li Po battery Level indication 100 U gt 4 0 Volt Indication of enabled rear speaker or headphone output Level indication 75 U 3 9 4 0 Volt 50 U 3 8 3 9 Volt 25 U 3 7 3 8 Volt Level indication 0 U lt 3 7 Volt The battery is almost empty and must be recharged 48V The XL2 provides 48 V phantom power supply to the connection microphone or sensor GH WE The battery is being recharged by the mains ASD An NTi Audio measurement microphone with power adapter or the USB connection to PC automated sensor detection ASD is connect ed The XL2 reads the electronic data sheet of the microphone and switches the 48V phan Using standard AA batteries tom power automatically on No level indication as long as U gt 4 5 Volt Level indication 0 U lt 4 5 Volt The batteries Phantom power is switched off are almost empty and should be replaced The real time clock is set in the System menu Using mains or supply No indication of battery status INTi AUDIO Getting Started 3 Getting Started Power Supply The XL2 offers flexible power management options and can be operated either by e Replaceable rechargea
71. Tolerances 144 Capture Tolerances dBr relative fixed setting Describes tolerance type the XL2 allows set ting of the tolerance type independently of the tolerance file HighLow Utilizes upper and lower toler ance based on Ideal reference High Utilizes only upper tolerance based on ideal reference Low Utilizes only lower tolerance based on ideal reference Column headings for further tolerance data separated in different columns Frequency Min Ideal Max Defines the tolerance band for the A weighted wideband level not mandatory Defines the tolerance band for the C weighted wideband level not mandatory Z Tolerances Band Tolerances LevelOffset Defines the tolerance band for the Z weighted wideband level not mandatory e Defines the tolerance band for the individual frequencies e The ideal parameter can be set as undef e The same frequency value on two succes sive rows defines a tolerance step e g Frequency Min Ideal Max 100 70 75 80 500 70 75 80 500 75 80 90 1000 15 80 90 All levels in the tolerance file are relative levels dBr Thus the level offset provides the relation between the relative level and actual sound pressure level not mandatory The XL2 allows setting of the level offset inde pendently of the tolerance file Capture Tolerances Hide This parameter defines which tolerance fre FreqScale UnusedBands quency range is shown not mandatory Spa
72. Verify Mode Locks the XL2 Analyzer in the Verify Cinema mode After powering off the instruments starts up directly in the Verity Mode again The user may unlock the instrument anytime e View verification results Displays measurement deviations of periodical measure ment against reference data e Exit Returns back to other XL2 measurement functions The Cinema Meter Option includes the Spectral Limits Op tion In case you have the Spectral Limits Options already installed then just go for the Cinema Assistant Option NTi Audio 600 000 378 which will provide you the Cinema Meter functionality in cooperation with the previous installed Spectral Limits Option Power On XL2 Open xl2 htm Further Information INTi Activate option AUDIO Mass storage Ar ir mar is el Login http my nti audio com 185 INtTi Further Information AUDIO Insert License number Get Activation Key aj Computer amp os C xt2 NTi Audio XL2 E B Projects XLZ_syS 4 Elemente XL2 Download activation file and copy to XL2 xx_Oxxxx txt 186 Calibration Certificate The calibration certificate lists the individ ual product data with serial number The calibration and adjustment procedures follow the documentation and traceability requirements of the EN ISO IEC 17025 standard Annual re calibration of the in strument is recommended ensuring ac curate measurements
73. all registered users Enable all macros when opening the document System Requirements e PC running Windows XP or Windows 7 e Excel 2007 or Excel 2010 32 bit or 64 bit versions STIPA INTI AUDIO e The ambient noise has to be sufficiently static during the measurement Impulsive ambient noise during the measure STI gt 0 63 One single measurement is sufficient ment such as speech causes severe measurement errors The STIPA result is usually too high STI lt 0 63 Perform three subsequent measurements for this measurement position e Fluctuating noise is detected by measuring the direct STI e f the maximum result deviation of these three in the absence of the test signal Carry out these measure measurements is gt 0 03 then further three ments at least at a representative set of locations If the STI measurements shall be performed is too high e g STI gt 0 2 the measurement results are e f the maximum result deviation of these mea likely to be erroneous Then the STIPA measurement should surements is gt 0 05 then the cause of this in be carried out without this noise being present Utilize the Stability shall be evaluated and removed ambient noise correction for such instances e The arithmetic average of the performed three or six measurements has to be reported e At locations with varying conditions e g some public areas with few people and other areas with crowds the worst case STIPA results should be measured
74. ance mode cy band 112 Oct LA E 4 aso 13 52 S 1 12 Oct TE eee E a4 8dE 1 12 OCT Liwe 39 1 dE iri OCT Ref 10 HWBdEt a 2 150kHz Ref 10 G adBt a 2 58AkHz ma FRSE 1 Ei IEHU I l ne 100 BO BO BO BO 40 40 20 m i amp 63 250 dk ks AZ i amp 63 250 dk ks AZ MT SET ae TH is E n r I TM SET do RAGE 40 COT Sa i 40 RHGE 140 T Ais E CAT i l A T e Confirm with enter e Select Exit tolerance mode e Select the tolerance Ref with the rotary wheel Confirm with enter e Confirm with enter e Select the new tolerance file from the SD Card or the Internal XL2 memory 141 INTi AUDIO Capture Tolerances You may start the passed failed measurement by one of the following possibilities e Press the XL2 start button bal e Activate the automated level trigger in the tolerance file e Activate the digital input 1 via the external I O interface e g a foot switch or a PLC control Result Passed Output 1 Result Failed Output 3 Start Measurement Input 1 142 Tolerance curves can either be imported from txt files or direct ly derived from captured measurements The XL2 calculates tolerance bands based on e Single captured results e Manually generated txt files on the PC e Mean average of multiple captures e Min Max curves of multiple captures Capture a spectrum on the XL2 Analyzer Enter the tolerance mode and generate a tolerance band for the captu
75. and sound levels for each octave band On site averaging of results Ambient Noise Correction The page button toggles between the 123 Tab Avr screens These pages show the speech intelligibility mea surement results The page Cor offers setting the noise spectra prior the STI measurement Frequencies 125 Hz 8 kHz in 1 1 octave band resolution Individual time averaged octave band level Leg 109 INTi 110 STIPA AUDIO For good speech intelligibility it is mandatory that the in tegrity of the transmitted voice signal modulations are pre served Therefore STIPA is based on measuring the MTF Modulation Transfer Function This function quantifies the degree to which the voice modulations are preserved in individual octave bands STIPA determines the MTF by ana lyzing the seven frequency bands Each band is modulated with two frequencies resulting in the modulation index 1 and index 2 All indexes together combined with psycho acoustic models provide the single value STIPA result The STIPA measurement function has a built in error detec tion which helps you identifying faulty measurements The error detection checks the following parameters e Invalid modulation indices MF1 or MF2 gt 1 3 e rregularities during ongoing measurements Both parameters depend on the amount of impulsive en vironmental noise which influences the accuracy of any STIPA measurement The STIPA numeric result page displays the me
76. asurement result interrupted by the flashing question marks if the error detection finds any problem Furthermore octave band results detected with irregularities are marked In the STIPA table result page with a question mark The error indication might be caused by either e Missing test signal level or e Impulsive background noise events If the error detection finds any faults you should repeat the measurement and compare the STIPA test result with the previous ones The XL2 reads the electronic data sheet of the connected NTi Audio measurement microphone and switches the 48V phantom power automatically on as follows Connect the measurement microphone to the XL2 Switch on the XL2 Position the XL2 at the measurement location using a micro phone stand or tripod Select the STIPA measurement function in the measure ment menu Prepare the environment for the measurement For example mute all sound sources to establish silence No impulsive noise shall occur during the STIPA measurement as well no speaking or other noise sources should be allowed near the measurement microphone STIPA INTi AUDIO Select the STIPA signal source according your application re quirements e Switch on the STIPA test signal at the signal source e Set the acoustic sound pressure level of the PA system to simulate the typical announcement level e g LAS 85 dB STIPH 3 TOPPED 123 LR Bl OT Las
77. ave occurred during the ongoing measurement Answers the question What caused the triggered event Lvi Event automatically triggered by level 1 Event triggered or marker added by pressing key 1 of the XL2 Input Keypad 2 Event triggered or marker added by pressing key 2 of the XL2 Input Keypad 3 Event triggered or marker added by pressing key 3 of the XL2 Input Keypad 4 Event triggered or marker added by pressing key 4 of the XL2 Input Keypad Sound Level Meter INTi AUDIO Preset the Min Event Duration when a key is pressed If a key is pressed and held for longer than the preset Min Event Duration then the triggered event lasts for as long as the key Is held 59 INTi Sound Level Meter AUDIO e Select the logging page set Logging On Interval dt 00 00 01 and choose the required log values e Setup the event page For example the screenshot below starts the event recording after LAF exceeds 80 dB for 2 sec onds and stops after LAF is lower than 70 dB for 3 seconds SLheter RRA iz 21 g Trigger Events on level gbowe Start dE 0 0 for Bes Stop d6 6 0 16 for B35 Level LAF Log Audio Events Onby Format Compressed Record whole ewent Status Stopped Curr Level 64 S9dB HOnITOR Event count HABA e Select the memory menu and create a new folder This fold er will then be displayed in the memory menu All log data and event wav files are stored in this folder 60 Tr
78. ble lithium polymer Li Po battery included with the XL2 Analyzer e 4x AA batteries e Mains Power Adapter The new battery is charged to approximately 50 and should be fully charged before use with Battery Charger optional Charging Time approx 3 hours NTi Audio 600 000 332 Mains Power Charging Time approx 6 hours Adapter Leave the battery inside and switch off optional the XL2 for charging NTi Audio 600 000 333 USB Power Charging Time approx 6 hours from PC Switch off the XL2 for faster charg ing Operation using Mains Power Supply You can also operate the XL2 with mains power using the NT Audio DC power supply unit During operation with this exter nal Mains Power Adapter it is recommended to leave the bat teries inside the instrument Mains Power Adapter Electrically isolated linear DC power supply Non NTi Audio power supplies may have neg ative effects on measurements e A decreased THD N performance will oc cur with unbalanced input signals when using switching type power supplies approx 3 dB Damage caused by using an Inappropriate ex ternal DC supply is not covered by warranty DC Power supply specifications Voltage 75 23 0 Volt Power minimum 6 Watt Connector type 2 1 x 5 5 x 9 5 mm Polarity amp Getting Started INTI AUDIO e Open the battery cover at the rear of the instrument e Insert the rechargeable Li Po battery with the contacts edg
79. cable standards are listed the corresponding specification Microphone Type Capsule Transducer PreAmplifier Type Flatness Frequency Range Residual Noise Floor typical Maximum SPL MAD SY kE Sensitivity typical 1 kHz Temperature Coefficient Temperature Range Pressure Coefficient Specifications M2230 M2211 M2210 M2215 Class 1 Certified Frequency Response High SPL Class 1 Frequency Response Class 1 Omnidirectional pre polarized condenser free field microphone 1 2 detachable with GOUNS2 thread MA220 Class 1 IEC61672 1 1 dB 5 Hz 20 Hz 1 dB 20 Hz 4 kHz 2 dB 4 kHz 20 kHz 5 Hz 20 kHz 16 dB A M2211 21 dB A 25 dB A M2210 19 dB A 139 dBSPL 144 dBSPL 153 dBSPL 34 dBV Pa 3 dB 42 dBV Pa 3 dB 20 mV Pa 8 mV Pa lt 0 015dB C 10 C to 50 C 14 F to 122 F 0 02 dB kPa 27 5 dBV Pa 2 dB 42 m V Pa lt 0 01 dB C 0 005 dB kPa INTi AUDIO M4260 Class 2 1 4 permanently installed Class 2 IEC61672 1 1 4 5 dB 5 Hz 20 Hz 1 5 dB 20 Hz 4 kHz 4 5 dB 4 kHz 20 kHz 29 dB A 144 dBSPL 31 7 dBV Pa 3 dB 26 mV Pa lt 0 02 dB C 0 C to 40 C 32 F to 104 F 0 04 dB kPa 199 INTi AUDIO Influence of Humidity non condensing Humidity Long Term Stability Electronic Data Sheet Output Impedance Power Supply Connector Diameter Dimensions Length Dimensions Weight NTi Audio 2
80. cing True Measurement results of fre quency bands without any specified tolerance are not dis played False The measurement result of all frequency bands are shown nAllowed Allows a PASSED result with a maximum Violations number of n failed frequency bands not man datory AutoStart INTi AUDIO Defines the frequency scale spacing in the X axis for the tolerance data not mandatory lin log Tolerance data displayed with linear frequency spacing e g used in the FFT function de fault setting Tolerance data displayed with logarithmic frequency spacing e g used in the 1 12 Oct Tol function Enables auto start function not mandatory True False Auto start is active The run indi cation displays A The measure ment starts automatically after the trigger level is reached Alternatively the measurement may start manually by pressing start bal No auto start function default setting 145 INTi Capture Tolerances AUDIO AutoStartTrig Sets the sound level in dBZ for an automated gerLevel level trigger the passed failed measurement starts as soon as the set level e g 95 dB Is reached or exceeded The actual input level can be monitored at the Input range bar man datory if AutoStart is True used otherwise not mandatory AutoStartSet Defines the settling time after the auto start tlingTime trigger level is exceeded until the start of the measurement the time is set in 100 mil
81. ction Standard Features ALE jz LF ILS Appendix INT AUDIO Optional e Extended Acoustic Pack I Impulse E Sound Exposure Level Percentile Sound Pressure Levels 203 INTi AUDIO Sound Level Meter Parameter Sound Level Meter RTA Spectrum Analyzer Sound Level Meter Audio Recording Sound Level Meter Triggered Event Recording 204 Appendix Standard Features Optional e Extended Acoustic Pack live Prev Clock Impulse Maximum Level Taktmaximalpegel in ac cordance with DIN 45645 1 Calculated levels in accordance with DIN 45645 1 LAFTSeqLAeq Laleq LAeg Lteq Lieg e Extended Acoustic Pack or Spectral Limits Option True peak level e Recording of wav tiles e Extended Acoustic Pack ADPCM compression Recording of wav tiles 24 bit 48 kHz e Voice note recording e Extended Acoustic Pack Sound Level Meter Logging FFT Analysis Measurement Range FFT Tol Capture and Tolerance RT60 1 12 Oct Tol STIPA Querying measurement data online via the USB interface Standard Features not available function not available function not available Appendix INT AUDIO Optional 100 ms logging Extended Acoustic Pack with zoom function Spectral Limits with zoom function Spectral Limits Capture and Tolerance functionality Extended Acoustic Pack 1 3 octave band results Spectral Limits 1 12 Oct Tol Capture and Tolerance functionality
82. d to ensure accurate sound level measurements It generates 94 or 114 dBSPL reference tones 1kHz for calibration of 1 2 and 1 4 measurement microphones NTi Audio 600 000 390 The MR PRO is an extremely powerful analog audio generator designed for the professional engineer It generates the following analog audio signals e Sine Waveforms freely selectable fre quencies and levels up to 18 dBu e Sweep Signals any frequency interval up to 1 12 octave e White Noise Pink Noise e Polarity Test Signal e Delay Test Signal e Uploaded wav tiles wav NTi Audio 600 000 310 189 INTi AUDIO 190 Further Information The NTi Audio TalkBox greatly simplifies the acoustic feed of the STIPA intelligibil ity test source signal into closed sound reinforcement systems It presents the Standardized voice like acoustic signal emission simulating a human talker in ac cordance with IEC 60268 16 combined with a certified speech intelligibility signal at standardized levels NTi Audio 600 000 085 1x included with XL2 NTi Audio 600 000 374 Individually tested high performance card for data storage NTi Audio 600 000 385 Individually tested high performance card for data storage NTi Audio 600 000 386 NTi Audio guarantees the function of its products and the in dividual components for a period of one year from the date of sale During this period defective products will either be r
83. dices and individual band level results is provid ed The STIPA analyzer meets the latest standard edition 4 0 IEC 60268 16 released in 2011 The XL2 Supports also noise corrections automated averaging of measurements and the older standard editions 2 0 and 3 0 The speech intelligibility depends on the following system pa rameters e Signal to noise ratio e Psychoacoustic masking effects e Sound pressure level e Ambient noise level e Reverberation time RI60 e Reflections e Frequency response e Distortion The speech intelligibility measurement STIPA is an option for the XL2 Audio and Acoustic Analyzer Ask the local representa tive for purchasing details 106 Utilize the applicable STIPA signal source dedicated for your installation configuration NTi Audio TalkBox The NTi Audio TalkBox simulates a person talking at a precise acoustic level enabling the measure ment of the complete signal chain including the microphone e Place the NTi Audio TalkBox in front of the mi crophone at the typical position of the talking persons head e Select Track 1 for the STIPA test signal e Select Output Mode to Speaker you should hear the STIPA test signal Minirator MR PRO The Minirator MR PRO is used for electrical signal injection into public address systems that com monly use alarm messages from a hard drive systems without a microphone CD Player The NTi Audio CD STIPA V1 17 included in the package can
84. e e Mid range Negative e Tweeter Positive with small levels The major part of the signal energy is measured in the mid range frequency bands Therefore the overall displayed polarity is NEGATIVE 89 INT Delay Time AUDIO The delay time measurement function is suitable for accurate configuration of delay line setups by optimizing the direction ality of the signal source The XL2 measures the delay time between the reference signal and the acoustic signal from the speaker The acoustic delay settings are displayed allowing you to easily set the measured delay time into the delay device in the rack The NTi Audio delay time test signal is provided either by the Minirator MR PRO MR2 or the Test CD included with the XL2 13 45 S Delay Signal J 1 cafe Mainirater Act Delo 5 aE 9 8ms lt L 3 GB 5ms Act RI ms 6 A Distance 0 20 ESEN 5 AOLUOODDDUDUIUUTUOUD TUTTUU TUUTUU IITTI 00 o0 Measure 90 Select the signal source for the delay measurement CD Player Using the supplied NTi Audio Test CD this setting implies the synchronization time bar is set to 100 seconds 1 min 40 sec after 100 seconds the XL2 has to be syn chronized to the delay test signal again Minirator Due to compatibility and the accuracy of the Minirator MR PRO and MR2 test sig nals the XL2 offers an extended time range without synchronization Only after 300 sec onds 5 minutes does the XL2 have to be synchronized t
85. e first e Close the battery cover Switch off the XL2 for faster recharging by mains power adapter or USB connection Switch the XL2 off prior opening the battery cover in order to prevent any electronic dis charges Avoid short circuits Operate and charge the battery between 0 C and 45 C 32 F 113 F Do not heat the battery above 60 C Do not place the battery in or near fire Do not solder directly on to the battery Do not disassemble the battery Do not insert the battery in reverse polarity INTi Getting Started AUDIO Alternatively the XL2 can be powered by AA type batteries e Open the battery cover e Insert 4 fully charged AA batteries observing correct polarity of the indications in the battery compartment e Close the battery cover Switch the XL2 off prior opening the battery cover in order to prevent any electronic dis charges e Use only similar batteries from the same manufacturer Replace discharged batteries with new ones e Do not mix used and new batteries During operation the battery temperature may increase noticeably This is not a defect Remove all batteries if the XL2 is not to be used over a long period of time Getting Started INTI AUDIO To avoid accidentally dropping the XL2 a hand strap is supplied with the instrument e Pull the loop of the hand strap through the opening e Pull the other end of the hand strap through the loop e Pull the
86. e E ai 14 Speech Intelligibility STIPA optional ee 106 eA de ANE Ne iiia V7 6 Audio Analyzer cssseccccscssssssssssssssssssssessssssssssvssssssscssssseee 121 Warong the Stand sereia E 18 RNO TACEN e aa 121 SOMME CHING tE ALZ acca cca ek one ie 18 Bec isecnce 123 Switching the XL2 On and Off ceeccccccccccccsssesccsecssseese 20 E E esa east E ENA Select Measurement Function es eeesieeesieerrneennn 20 Z ANSI sessi E ees 124 AAN PEE AEAU CAE ae aaa a S Prono oeae ee ee ee a eee 128 4 Sound Level MOTOT carnau 22 9 Spectral Limits Option Capture Tolerances 135 NNW ss ce a E EE 25 Sound Level Meter Getting Started 33 10 System SettingS ccccccseccceseeeseeeeseeeeeseeeeeseeeesaaes 147 RTA Measurement Getting Started oo eee 39 TT SOGOU GR secr EA 151 COMECTION Valte KOEN errs aan NR 44 Reporting eiceerenen a a e ERN 48 12 Data Management nnnnasnnnnsnsnennsennnrnsnnsesnnnnnnsenn 154 LID erent cae E taees rare Raweteoeeshecs AQ Record Voice NOTES rsscaunsindianisansn bein einenninanarinnseatds 159 Wav File Recording 0 ccccccscccsesecessesecesesseveseveeneeeeenee 52 Recall IVICASUPEMINGUIUS snusieactanissn sansnnganawlantesunte sacamenictae 165 Events Optional sesruro iei 54 Append Measurements sccssceresseternareseaneuecensnaenastaeenn ds 167 NNT S ence oes ceca eee cageta erste eee neat se eee ateene tenes 61 13 XL2 Projector eee ee 171 INTi Table of Contents AUDIO 14 Monitor
87. e PC For sound level measurements with timer mode Repeat or Repeat Synchronized the following additional data files are generated e MyTest_SLM_000_123_Report_Rep txt e MyTest_SLM_OOO_RTA_Report_Rep txt Common xxx_Report txt files contain the mea surement data of the last measurement cycle The xxx_Report_Rep txt file contains the results of all measurement cycles in the Repeat or Re peat Synchronized mode The generated txt files are best viewed on the PC using Open with gt Microsoft Excel 163 INTi Data Management AUDIO File name e g MyTest_SLM_000_123_Log txt File name e g MyTest_SLM_000_123_Report txt XL2 Broadband Logging MyProjects My Test_SLM_000 123 Log XL2 Sound Level Meter Broadband Reporting MyProjects MyTest_SLM_000_ 123 Report txt Hardware Configuration f Hardware Configuration Device Info XL2 SNo A2A 02673 D1 FW2 20 s Mic Type NTi Audio M4260 S N 1486 User calibrated 2011 04 05 13 56 PEORIA eee h Mic Type NTi Audio M4260 S N 1486 User calibrated 2010 11 05 13 56 M tivity 27 3 mV P eee ee Mic Sensitivity 27 3 mV Pa Measurement Setup iiecsupemen Setup Timer mode continuous Timer set sali Append mode OFF Log Interval 00 00 01 Timer mode continuous k1 0 0 dB Timer set 1 1 k2 0 0 dB k1 0 0 dB kset Date k Values not measured k2 0 0 dB Range 30 130 dB kset Date k Values not measured Range 30 130 dB Time Start 2011 05 15 17 44 0
88. e at levels lower than 100 dB Measures the minimum environmental noise level during the measurement period Averaged sound level over time with A frequency weighting INTi AUDIO AJ FJ A ED r 215 INTi AUDIO L Aeq dt LAeq k1 LAeqxx 216 Appendix Level of actual logging interval e g Logging interval 1 second then LAeq_dt is the time averaged level of the past 1 second The actual measurement position often differs to the loudest posi tion of the live event Thus the correction value k1 is the correc tion value of LAeg between the loudest position and the actual measurement position measured using pink noise The correc tion value k1 is measured or manually set in the page KSET of the sound level meter function Measurement of the moving sound level over time Leq with A weighting frequency and F weighting time responses the param eter xx is user defined from the available settings e 5 seconds for live sound monitoring e 10 minutes in accordance with the French standard e 15 minutes in accordance with the British standard e 60 minutes in accordance with SLV LAeq60 1 LCpeak k2 Appendix The actual measurement position often differs to the loudest posi tion of the live event Thus the correction value k1 is the correction value of LAeq60 M between the loudest position and the actual measurement position measured using pink noise The correc tion value k1 is measured or
89. e display and comprehensive tolerance handling for the FFT Analysis and the new high reso lution RTA with spectral resolutions up to 1 12th octave e FFT and 1 12 octave function Capturing of multiple readings into the internal memory Comparing measurement results against captures with relative or absolute curve display Comprehensive tolerance handling with tolerance masks based on captures for passed failled measurements Export and import of tolerance and capture files e 1 12 octave function High resolution RIA function 1 12 Oct Tol Selectable 1 1 1 3 1 6 and 1 12 octave resolution Frequency band listening at rear speaker e FFT function High resolution Zoom FFT with selectable frequency ranges and resolution up to 0 4 Hz in the range of 5 Hz to 20 kHz e SLMeter RTA function True peak level in 1 1 and 1 3 octave resolution NTi Audio 600 000 377 The Type Approval Option upgrades the instrument to the XL2 the sound level meter dedicated to certified measure ments The XL2 with the M2230 microphone forms a type approved sound level meter offering class 1 performance in accordance with IEC61672 and type 1 in accordance with ANSI 1 4 The Type Approval Option includes e XL2 Firmware V2 52 approved Firmware e Sticker XL2 e XL2 Manual available online at www nti audio com XL2 INTi AUDIO Further Information How do get my XL2 ready for accreditation e Install the Type Approval Option on your XL2 and appl
90. e level of Wait until the measurement is completed the live event Signal source Minirator NTi Audio Test CD e Position the XL2 at the measurement position Select the correction page Etl e Turn the rotary wheel amp to select the parameter RUN next Search the audience area for the location with the highest to Measure and press enter sound pressure level and position the XL2 Analyzer Turn the rotary wheel amp to select the parameter RUN next to Audience and press enter SLMeter Eset ALA Gf 4 ast 13 24 a Fosition L n L Sl Meter Fen U E lt ast 43 24 am eich ooo Position Laegs LePeak Audience MM L2dB 115 7dB e eA d6 0E Measure KUN sanagi dE Measure RUN een dE Difference ki G OdB ka Ode CLEAR ALL Ditference ki AdE ka amp B AdB mT SET ee 50 BHGE 150 BM oponi HTT SETO PODO SO HGE 150 E EEHEEHE 45 INTi AUDIO Sound Level Meter e Wait until the measurement is completed e The correction values k1 and k2 are calculated and displayed including date and time in accordance with DIN15905 46 SLMeter Kset LAR Gl ast 13 24 S Position LAegS LePeak Audience Run anii ia 09 13 24 eee dB 115 7 dE Measure Gil anii ia n9 ag ay PLEJE 126 7 dE Ditference ki 1 1dE ka 11 8 dE CLEAR ALL III E SET s0 AHGE 150 CHT oats You may fine tune the correction values k1 and k2 manually Such fine tuning adds the remark Manually Adjusted
91. eak gA 4 dE e Graphs and spectra Updated every 50ms TT p SET 50 FHGE 150 crt ee ee Se The display is updated continuously during measurement INTi AUDIO SLMeter RTA FFT Tol RT60 Polarity Delay Time RMS THD N Oscilloscope 1 12 Oct Tol STIPA Cinema Meter Calibrate Profile System Overview Individual level measurement results SPL amp RTA Measurement FFT Analysis with optional Tolerance Management Reverberation Time RT60 Polarity Delay Time RMS Level and Distortion Scope Spectral Analysis with Tolerance Man agement optional Speech Intelligibility optional Calibration and verification of cinema loudspeaker systems optional Calibration Menu for microphone Store and load measurement profiles system Settings Toggles between available measurement and result pages within the same function menu Alternatively use the page button Select XLR or RCA input connectors as the source The memory menu is used for data storage management One of the following symbols flashes before or after start ing the measurement 9 8 7 RUN LOG AUD Evt Time in seconds until instrument is settled and measurement will start Indicates the ongoing measurement Indicates the ongoing measurement with data logging Indicates the ongoing measurement with data logging and audio recording Indicates an ongoing triggered event recording Overview IN
92. eds Eo ii opopog 40 58 00H2 21 TkHz 1 12 kHz TT 5 40 RHGE 140 T lz p TEHRI CiT aa a e e Press the stop button bal to stop the measurement 72 FFT Analysis Tolerance INTi AUDIO e Select the memory menu with the rotary wheel amp and The Spectral Limits Option extends the function range of the confirm with enter XL2 with trace capturing relative curve display and compre hensive tolerance handling for the FFT Analysis and the high resolution 1 12 Oct Tol spectral analysis Features rT ASD 13 24 e Captures multiple traces in the internal memory _ FQ e Comparing measurement results against captured traces us Live fyvProject with relative or absolute curve display ian Homing Sowing manual e Comprehensive tolerance handling Sgae Lest e Creating tolerance masks based on captured reference ii TE i ee St a curves for passed failed measurements an l nee 174 7 MBytes e Export and import of tolerance and capture files True peak level in 1 1 and 1 3 octave resolution High resolution Zoom FFT up to 0 4 Hz steps in the frequen cy range 5 Hz 20 kHz 40 58 00H2 c 1 1kH3 1 12 kHz TT SET NR uo ppoe wo Teds Eo iir onnnag Read the detailed description in the separate chapter ETE an OCT Capture Tolerance in this manual e Press enter to store the test results as an ASCIl file or select Save Screenshot to store the screenshot 73 INTi AUDIO R
93. epaired free of charge or replaced These guarantee provisions do not cover damage caused by ac cidents transportation Incorrect use carelessness non origl nal accessories the loss of parts operation with non specitfied input voltages adapter types or incorrectly inserted batteries NTi Audio accepts no responsibility for subsequent damage of any kind The warranty will be voided by carrying out repairs or services by third parties who are not part of an approved NTi Audio Service Centre Consumers may have legal statutory rights under applicable national laws relating to the sale of consumer products This warranty does not affect your statutory rights You may assert any legal rights you have at your sole discretion Your NTi Audio instrument has been carefully tested during production and corresponds to the specifications listed in Technical Data Calibration certificates for new products are optional NTi Audio recommends annual calibration of the products af ter the purchase The calibration provides documented and traceable measurement accuracy and confirms that your NTi Audio product meets or exceeds the published specifica tions The calibration and adjustment procedures follow the documentation and traceability requirements of the standard EN ISO IEC 17025 For calibrations kindly follow the service guidelines at www nti audio com service INTi AUDIO Further Information If your product is not functionin
94. erances C LOAD FROH h CEES 100 j T Bo BO 40 20 40 BHGE i40 T EHEJ Hoke tolerance from S0 CARD 2011 05 04 13 51 l2 OUT Leh kHz SEI eee AR ts INTi AUDIO e Select Ref to load the earlier captured reference spectrum e Confirm with enter You may press the page button to toggle between the date and spectral resolution data of the capture 139 INTi Capture Tolerances AUDIO The passed failed condition is further visualized by the bicolor limit button and forwarded to the I O interface of the instru ment in order to drive an external alarm device such the acces sory SPL Stack Light 1 12 Oct ti SLAA EI 34 5 dE Ref 1h AdBT E FASS ED 20 16 E 250 ik UVUNNUUAUIII 40 EHGe iuo e415 E 140 ASD 13 52 a iriz OCT a 2 1 8kHz 4k 16k Ae SET Ont GoGo PASSED The actual measurement result is within the tolerance band The actual measurement result is outside of the tolerance band Exceptions are visual ized in any out of tolerance frequency band Adjusts the tolerance bandwidth based on the captured ref erence spectrum in dB Provides a level offset in dB to move the tolerance band up down Capture Tolerances INTi AUDIO The XL2 Analyzer compares spectral measurements againsta Select the Capture amp Start Tolerance Mode symbol to exit tolerance band and visualizes exceptions 1 in every frequen from the toler
95. es for passed failed measurements Capture EQ Captures the upper parameter Capture Live Captures the lower parameter 97 aNTi 1 12 Octave Tolerance AUDI Manage Allows to rename captures clear re 3 captures corded captures save captures to SD e Select the YAxis with the rotary wheel and confirm Card for export from the XL2 or load with enter captures from SD Card for import to e Select the zoom factor between 20 10 5 2 5 dB div the XL2 and confirm with enter e Scroll up and down with the rotary wheel amp to select the Start tolerance Starts the tolerance mode for passed Y axis range mode failed measurements comparing the Confirm with enter actual measurement results against a tolerance band 4 Spectral results in 1 1 1 3 1 6 or 1 12 octave band resolu 2 tion Adjust the resolution at 2 Actual level result of the indicated frequency band The cur sor readout displays the center frequency and the level of the band indicated by the arrow Upper parameter displayed as line uu Lower parameter displayed as bargraph 98 The XL2 Analyzer provides three input ranges to accom modate the wide range of input signals The individual rang es are based on the microphone sensitivity setting in the calibration menu of the XL2 For example at a sensitivity S 20mV Pa the input ranges are e Lower range 10 110 dBSPL e Middle range 30 130 dBSPL e Upper range 50 150 dBSPL Select the lowest
96. everberation Time R 160 The XL2 measures the energy decay from 63 Hz to 8 kHz using the Schroeder method Use either an impulse source e g a Starter pistol or a gated pink noise as the test signal Reverberation time RI60 is the time required for the sound pressure level to decrease by 60 dB after the sound stimulus signal is stopped Since ambient noise often defeats the mea surement of a 60 dB level decrease in practice It is difficult or even impossible to measure a 60 dB decay in many real life rooms Thus the applicable standard SO3382 specifies e The measurement of a 20 dB level decrease multiplied by 3 e The final 60 dB decay result shall be labeled T20 RT60 T20 3 x decay time of 20 dB In detail the reverberation time RT60 is based on a linear least Squares regression of the measured decay curve from 5 dB down to 25 dB according It is sufficient to create a test level at least 35 dB above the background noise within each fre quency band Please see the next drawing for details 74 If the overall RT60 is short e g lt 0 3 seconds the room acoustic is referred to as being dead for example a heavily furnished room with thick carpets curtains and upholstered furniture may have such an acoustic character If the overall RT60 is long say more than 2 seconds the room acoustic is referred to as being live and echoic for example a large empty room with painted plaster walls and a tiled floor may
97. ews e Select the product type and enter the serial number e Faster worldwide support e Confirm with Register e Tracing support in case of loss or theft e Now your product is listed in the table My Products e Calibration support 177 INTi Further Information AUDIO e Resetting to Factory Default e XL2 Starts Up with Limited Functions e SD Card Errors e Can use another SD Card e Stored Data or Wav files not available on SD Card If the XL2 Audio and Acoustic Analyzer reacts unexpectedly a reset to the factory settings might solve the problem Switch off the XL2 e Hold down escape and simultaneously operate On Oft 178 The XL2 has been operated the last time in one of the sim plified application profiles and the system settings have been changed as follows Select Profile from Yes to No e Follow the above resetting to factory default The XL2 Audio and Acoustic Analyzer writes measurement data automatically onto the SD Card during ongoing measure ments thus a functioning SD Card has to be inserted at all times Error Messages Actions to do Missing SD Card Insert the SD Card SD Card is not FAT formatted Format the SD Card on the PC SD Card is full The memory of the SD Card is full Download all data to the PC and emp ty the SD Card Can use another SD Card Yes you can use any alternative SD Card such as offered in the chapter Further Information Accessories e Swi
98. extension SD Card included 4 GByte removable storing measurement data in ASCII format screen shots voice notes and wav files 197 INTi AUDIO Power Supply 198 Specifications e Rechargeable Li Po battery included Type 3 7 V 2260 mAh Typical battery lifetime gt 4 hours Range 3 3 4 5 VDC e Dry cell batteries type AA 4 x 1 5 V Typical battery lifetime gt 4 hours Range 3 7 6 0 VDC e Linear external power supply 9 VDC Range 7 5 23 0 VDC minimum 6 Watt Charges Li Po battery during operation e USB Power Supply General Clock Calibration Mechanics Temperature Humidity Susceptibil ity to radio frequencies Electromag netic Compat ibility position Real time clock with lithium backup battery e Recommended calibration interval one year e Microphone calibration with external calibrator supported e Optional calibration certificate for new instruments available e Tripod or microphone stand mount e Wire stand mounted on rear side e Display 160 x 160 pixels grey scale with LED back light e Dimensions L x W x H 180 mm x 90 mm x 45 mm 71 S35 xX 16 e Weight 480 g 1 Ib including built in Li Po battery 10 C to 50 C 14 to 122 F 5 to 90 RH non condensing Classification Group X CE compliant EN 61326 1 Class B EN 55011 class B EN 61000 4 2 to 6 amp 11 All specifications are according the standard IEC61672 Other appli
99. f the se SLMeter SRAM LA Gl asp 14 51 g lected sound level within the audio band Additionally the wide band result is shown graphically by a bar Lar KSET Log f mg a R KSET This page provides a wizard to measure correction val E ues which could be helpful for compliant sound level monitoring of live events It measures the correction values between the actual measurement position L meg S 4 3 cl B and the loudest position accessible by the audience LEPE STERS PE The XL2 displays and logs the selected sound pres sure levels including the correction values allowing HUT SET 30 PHGE 130 Eo ionom the sound engineer to monitor the sound level at the E a ed loudest position in the audience The measurement Menu with enabled options meets the requirements of the standards DIN15905 5 and SLV For details refer to chapter Correction Value KSET 23 INTi Sound Level Meter AUDIO Here you set which sound pressure levels shall be The event function is available with the optional Ex stored in a txt file after the completed measurement Choose between ALL Stores all sound pressure levels Selected Stores up to 10 different individually defined sound pressure levels For details refer to the chapter Report The XL2 features a powerful sound level meter data logger which allows you to record all required sound level values during the measurement In the logging page you set which s
100. f triggered event recording is enabled the digi tal output 4 OUT4 is utilized as confirmation feedback to the XL2 Input Keypad thus the set ting is disabled Sound Level Meter INTi AUDIO 63 INTi AUDIO FFT Analysis Tolerance Besides the comprehensive sound level meter function the XL2 Audio and Acoustic Analyzer offers the following acoustic measurement functions e FFT Analysis with optional tolerance function e Reverberation Time R 160 e Polarity e Delay time e 1 12 Octave Tolerance Analysis optional e Speech intelligibility optional 64 The FFT measurement is the ideal tool for visualization of comb filters and narrow band effects It allows a detailed frequency response investigation of audio and acoustic systems The XL2 includes an extremely fast real time FFT Optional features are e High resolution Zoom FFI up to 0 4 Hz steps in the fre quency range 5 Hz 20 kHz provided with optional Extended Acoustic Pack or the Spectral Limits Option e Capture and tolerance function provided with Spectral Limits Option thus the main menu function reads FFT Tol SLHeter RTA ASD 11 33 a FFT Tol Tr ATEH 3 0 dE h HAHAAH 20 5 00H2 TT i0 pHGE iin Ct o ls E c 92 0 Hz SET cnt 00 00 00 13 12 FFT ASD 13 24 E 103 5 dE 2 limit es th Live 116 406 a 55 000Hz F o I 40 58 00H2 QL TkHz 1 12 kHz S wo RAGE so Teds PE cnr ogomeg
101. file name to MyFirstProfile The maximum name following details are not stored length is 20 characters e Calibration settings e System settings e Temperature unit e Phantom power on off 130 Profiles INT AUDIO e Select Configure available screens and press enter e Switch on the XL2 SLHeter 123 LAR E lt ast 13 24 S FROFILE GAMA SEARCH MyFirstFrotil Select Screens i SLMeter 123 4 BR OTAS SLMeter int Gages SLMeter Kset sLMeter Log 3 Full mode SLMHeter Rep DIH15505 5 g SLHeter Lim B DIH155305 5 amp Audio k FFT Ak SLY 100dE el m FFT ikr SET OOND 10 SLY 1de amp Audio k 30 RHGE 130 sy tien MeFirstProtile e Select additional available pages measurement functions for the profile e g RTA atu e Press escape to return to the Save Profile screen e Set Append mode available yes in order to have the ap pend data feature available in the memory menu LBL e Select the profile MyFirstProfile and press enter e Select Save and press enter 131 INTi Profiles AUDIO e Select Profile in the main menu and press enter The profile name is displayed when a measurement function is highlighted The main menu offers only the measurement functions enabled by the profile plus the calibration and profile menu SLMeter 123 s LA Bl lt asp 13 24 S e Press start Dal SLHeter FERRER E i ast 13 24 g FROFILE MyFirstProtile m 1 3aB LAF
102. g correctly or is damaged please contact the local NTi Audio partner for assistance If the product needs to be returned for service kindly follow the service guidelines at www nti audio com service e The protective shock jacket shields the instru ment against reasonable impacts that could occur in normal use e Do not intentionally subject the instrument to extreme stress e Please do not drop the instrument e Damage caused by dropping or impact is not covered by warranty e Do not use the Instrument in damp environ ments The instrument can be permanently damaged if exposed to moisture 191 INTi AUDIO Further Information CE We the manufacturer NTi Audio AG Im alten Riet 102 9494 Schaan Liechtenstein Europe do hereby declare that the XL2 Analyzer the measurement mi crophones M2230 M2211 M2215 M4260 the preamplifier MA220 and accessories comply with the following standards or other standard documents EMC 2004 108 EG Harmonized standards EN 61326 1 This declaration will become invalid if modifications to the instrument are carried out without the written approval of NTi Audio Date 1 February 2013 Signature Position Technical D irector 192 Dispose of the instrument in accordance with the legal environmental regulations in the country The instrument must not be disposed of in the household gar bage At the end of its service life bring the instrument to a collecting point for
103. gered at noise levels above below a preset value including setting markers for specific noise cat egories Application example Recording the noise level for LAF gt 80 qB e Event triggered by external keypress of the XL2 Input Key pad You can utilize four keys 1 4 to categorize any noise of interest or noise to be later excluded in the post processing A typical application is categorizing any annoying industrial noise by persons living in the neighborhood The XL2 Analyzer logs the data specified in the LOG setting for the complete measurement du ration into a log file The markers and triggered events results are added to the same log file The XL2 Input Keypad is available as an acces sory Please see chapter Options and Acces sories for details 100 K Event Duration y Level dB 3 70 pete 4 NU l 13 12 60 K gt K gt Time seconds Features e The levels LAeg LZeq and LCPeak are recorded for the event duration e Audio data are recorded for the triggered event duration only thus simplifying data post processing and saving memory space for long term measurements e Setting markers by external keypress of the XL2 Input Key pad Sound Level Meter pYwYrn Ol BiG RMAs Trigger Events on level gbowe Start dE 0 0 for Bes Stop dB 0 0 16 for B35 Level LAF Log Audio Events Onky Format Compressed Record whole ewent Status Stopped Curr
104. ging During the measurement you can monitor the actual sound level LAeg5 k1 in order to remain below the permitted lim The following sound levels are displayed in the real time ana its alternatively you may monitor the spectrum analyzer for lyzer page tracing possible feedback frequencies Press stop ba to finish the measurement LCpeaktk2 C weighted peak level LCpeak with correc tion value k2 L7Fhold3 For tracing of feedback frequencies The peak hold time is set to 3 seconds L7Flive Actual real time spectra In accordance with DIN15905 5 all sound lev els are measured displayed and logged to the SD Card automatically The settings are locked which ensures that the correct parameters are measured The profile DIN15905 5 amp Audio includes the recording of Compressed AGC wav files 207 INT Appendix AUDIO This profile is configured with the following limits which trigger the lights on the limit button and external Digital O Adapter This facilitates a quick response to sound levels that exceed The following limits apply at all areas accessible by the visitors these limits during the moving measurement period window of 60 minutes during the live event Meer Lim eLA E i ast 14 58 g Limit LED On e Maximum averaged level The XL2 displays this maximum level with the measurement Red eae result LAeq60 k1 Orange gt 35 8dB Type of Max level Requirements Green 95 0dE live event r Bow
105. h LAeg applies to LAS deviation lt 5 dB LAeq Measured over a short time equals LEX gh the following formula applies for a measurement period lt 8 hours Lex gh LAeg 10 x log 1 8 hours Steady noise with stepped level variations Measure LAeq at the different levels and enter the data with the corresponding exposure time In the NTi Audio noise expo sure level post processing form the Ley gh will be calculated and displayed Varying noise levels Lex sh LAeg Measured for 8 hours The exposure limit values and respective actions are po texan tepe Aion S Lower limit value 80 dB A 135 daB The employer shall make individual hearing protec tors available to workers A Upper limit value 85 dB A 137 dB Hearing protectors shall be used Exposure limit 87 dB A 140 dB The attenuation characteristics of the hearing pro tectors worn must adequately reduce the levels below this limit 219 el vO P OOO 4
106. hand strap tight INTi Getting Started AUDIO A convenient table stand is attached to the rear of the instru ment e Unfold the stand and rest the XL2 on a flat surface Connect an NTi Audio measurement microphone to the XLR input connector of the XL2 Getting Started INTi AUDIO e Connect the source to the XL2 with an XLR cable e Connect the source to the XL2 with an RCA cinch cable e Select the XLR input in the menu e Select the RCA input in the menu INTi Getting Started AUDIO e Navigate with the rotary wheel amp to the main menu bar e Confirm with enter to select the measurement function Press power to switch on the XL2 SLHeter RTA ASD 15 40 S the XL2 i i Oct Tol g 6 a B Press power 4 and hold it down for one second to switch off STIFA 69 0d6 HUT E SET 40 RHGE 140 Cnt Goats Cinema Meter Main menu with enabled options e Scroll up down with the rotary wheel amp to select the re quired function and confirm with enter 20 Setting the Parameters with the Rotary Wheel e Turn the rotary wheel to navigate within the display screen The selected parameter is highlighted with a black back ground e Confirm with enter The parameter display flashes and or available parameters or settings are shown e Turn the rotary wheel amp to set the parameter or toggle with enter through the settings e Confirm with enter
107. have such an acoustic character Level dB A 0 dB A ANd 5 dB 20 dB level range to obtain the reverbera distance to tion time noise floor g o A h 25 dB 35 dB v y if NAN ats RTBA AUK LA Go Ast 13 24 S Level Markers 1 3 OCT BO 63 125 250 S00 ik ek Yk Gk ARG BE III 5 a0 HGE 150 STAT STOP Reverberation Time RI60 RTEA ASD 13 24 S Uncert goat cyce AWADO RT6AcTao 1 0 s 125H2 63 i25 250 500 ik k 4k Bk IMI AVRG AS s0 ANGE 150 STAT STOP INTi AUDIO 79 INTi Reverberation Time R T60 AUDIO ETEB RES SLR Gl ASD 13 24 a Correlot 1002 ie Hl DEL 21 a RGA cTA 61 115 125H2 Y 2 0 100 S z 20 1 5 U Ils O 0 63 125 250 500 ik ek B ARG AG a0 ANGE 150 STAT STOP 76 Prior to conducting a reverberation time measurement the environmental noise is measured and the required energy level of the test signal is determined e Select SET and press enter to measure the actual en vironmental noise Select between the lower mid and upper input range The exact ranges depend on the microphone sensitivity setting in the calibration menu of the XL2 This icon displays the running and stop status of the rever beration time measurement It is controlled by start stop Displays the actual measurement status Start and stop the reverberation time measurement with start stop ba The following status information
108. he XL2 uses the VoiceNote microphone for the de lay test do not connect any measurement microphone 13 45 a e Stop the delay test signal at speaker A e d T ii Minirater ee Act Delo Galop TELAT ass am a J 8ms Delay Signal B 68 5 mz Act BQ ms cece MWinirater Distance ZAP 37 m Act Delo 6 0 B 5 ms 4 MLUDUDUUUTIUUOTIUUUUUUUT UTUI TUOI TUUT ITTI TIITII 6 5m Act C ms on on Measure Distance ZAP LO m UVQNQQQUUUUUNNNQQUUOONUONQQQUOOUUNNQQUUOONNSQQUUUOOONNQQQUUUOONNSNQUUTL 00 00 Hegzure 05 00 94 Automated Difference Calculation e The delay time difference between speaker A and B is automatically calculated and shown below the Act Delay result The delay time is measured Delay Test utilizes VoiceNote Microphone The XL2 uses the internal VoiceNote micro phone to measure the acoustic delay Do not connect any measurement microphone to the XL2 for the delay time measurement Measurement Position Do not position the XL2 too close to reflecting surfaces such as walls or floors The reflections are likely to prevent accurate measurements Delay Time INTi AUDIO Result Interpretation e The resulting time in milliseconds shows the time difference of the sound signal from speaker A and B arriving at the measurement position Speaker B has to be delayed by the displayed difference result To optimize directionality add a further 5 ms to the calculated difference The main signal from spea
109. he noise level is lower or higher than the preset value and continues for the preset duration 14 Set the hysteresis to an appropriate value to prevent rapid switching on and off as the level drifts around the Start level Define the level type to be monitored 57 INTi AUDIO Sound Level Meter The XL2 logs audio data as a wav file Choose from the fol Audio logging is off Audio logging is activated from measurement start to stop Audio logging of triggered events only For more details read the chapter VVav File Recording 5 lowing settings Off On Events Only 6 Choose from the following audio recording formats Compressed Compressed AGC 24Bit_48kHz 58 Compressed audio logging Compressed audio logging with Automated Gain Control AGC Linear audio logging in 24 bit 48 kHz resolution Required for post processing on the PC with Extended Acoustic Pack If Log Audio 5 is set to Events Only then the duration for the audio recording may be further specified Recording Records a wav file for the whole trig whole event gered event duration Stop recording Records a wav tile for the specified after period after the event start is trig gered Displays current trigger status e Waiting for trigger e Armed during start duration 13 e Audio data recording e Completing log cycle Measurement result of the defined level 4 Counts the number of triggered events that h
110. iggered event recording requires the activa tion of sound level logging Using the default Interval dt 1 second is recommended If Log Audio 5 is set to Events Only then the XL2 sets per default Naming Saving auto in the memory menu This ensures that the re corded triggered event data is stored on the SD Card For convenience in case more than 20 trig gered events have been recorded the Au tosave gt Delete function is disabled as delet ing such multiple wav files on the XL2 takes a long time All triggered event wav files are stored in an individual folder For details see chapter Log ging Sound Level Meter INTi AUDIO Select Limit LED with the rotary wheel amp and press enter The limit page offers two functions to enable disable the limit function e Setup of limit LED amp function enabling the XL2 to highlight any sound levels that exceed the pre set limit in orange or 2 red color The default color is green Select one sound level for the limit LED indication e Limit parameter setup for external Digital I O Adapter which e Select the sound level field with the rotary wheel Q connects to the digital I O interface The Digital I O Adapter e Press enter and select the sound level for the limit is an optional accessory for the XL2 analyzer It serves the LED indication control of any external peripherals such as displaying sound levels that exceed limits on a big external red orange green 3
111. ing Network ccccccsceeseeeeeeeeeeeeeeeeeeeeeeeas 173 16 Microphones amp visscedsicassvasniecaantcasiischanenitemanieniie aes 174 17 Further Information c cccccssecessseeeeeeeeseeeeeeeaees 177 VY NT AUQIO coseta EE EE sumpatenns 177 THOS ANd TrOUDIESNOOTING wsissiissirireriniriieicnsinia en 178 Fiimiware Update seeni 2cerincisanind Eka e a aiae 180 Options and ACCESSOTIES cccccseecceeeeceeeeeeeeeeeeeeans 181 Vyaftranty COMEIUIOMNS acest cuss optsen cuiaa wcns rennan aeai 190 Calibration Certificate cccccccceecccseeeceeeeeeeeneeeeenees 191 Service and Repairs ccc ceccc se eccceeeceeeeeeeeeeeeeeeneeeeenees 191 Declaration Of Conformity ccc ccccecccceeecceeeeeeeene ees 192 18 Technical Data XL2 ccecccceeeeeeeeeeeeeeeeeeeeeeeeeeeeas 193 19 Technical Data Microphones cccscceeeeeeeeeeees 199 PD SUNG ors esac N E A A E ent ed 203 Appendix 1 Standard Optional Features 203 Appendix 2 Factory Default Profiles e 206 Appendix 3 Description Sound Levels 008 211 Appendix 4 Common Sound Levels 00ccceeeeees 215 Thank you for purchasing the XL2 Audio and Acoustic Analyzer The XL2 Analyzer forms the unique combination of a state of the art Sound Level Meter a comprehensive Acoustic Analyzer as well as a powerful Audio Analyzer The wide range of func tionalities is tailored for e Audio Acoustic In
112. ionally press enter Y Volume 8 dE DEODAT TONTTI TIN B0 IdE 80 Fost Hotch e g using a 100 Hz sine test signal connected to the XL2 input with the 100 Hz main fre quency filtered by the notch filter the complete frequency spectrum is available at the speaker or headphone output This feature allows you to listen to the actual distortion signal You there fore hear a noise from the speaker even without any connected inputs signal Audio Analyzer INT AUDIO The scope function visualizes the waveform of the electrical in put signal It automatically triggers to the fundamental frequen cy and selects the scaling of the X axis time and Y axis level accordingly The fundamental or most dominant frequency of the Input signals is displayed above the scope screen Scope LE E 13 45 S FREH 1 06053 kHz RUHHIHG Z emi L ea mE The scope scaling is fixed 123 INTi Calibration AUDIO The XL2 Audio and Acoustic Analyzer meets or exceeds the specifications listed in the chapter Technical Data In order to maintain the high accuracy annual calibration of the XL2 Analyzer and the measurement microphone Is recom mended The calibration service verifies the complete product specifications differences to the last calibration and measures the frequency response of the measurement microphone To enquire about calibration service follow the RMA guide lines at www nti audio com NTi Audio s ASD
113. istol e Press start P to continue the reverberation time measure ment e Enable the test signal e g fire the starter pistol An automated algorithm calculates the averaged reverb time of all measurement cycles 83 INTi Reverberation Time R T60 AUDIO e Press stop Da after all cycles are completed e Select CYC with the rotary wheel O press enter and se e f applicable switch off the pink noise test signal lect the individual cycle result with the rotary wheel e Select the result page RES with page La Within each cycle the reverberation time for The average reverberation time for each fre each frequency band is displayed in seconds quency band is displayed in seconds and the and the correlation factor in For more details measurement uncertainty in For more de refer to the chapter Reverberation Time RT60 tails refer to the chapter Reverberation Time RT60 ATEA AES LA ast 13 24 S e Correlot JAA Gal DEL ATEH m i Asb 13 24 g as ATE Tamn Lillis 125H2 Uincert 33 5 crc AVAG 2 0 2 22 n RT6Actan 1 06s 125Hz S 7 1 5 aO 2 0 ols mies A 1 0 1 5 1 0 Se ee iil E EE JL 0 0 0 5 aa E3 125 250 500 ik Zk Yk Bk _ _ me GB oS EJ 125 250 500 ik Zk 4k Bk a0 ANGE 250 STAT STOP III ARG 65 s0 ANGE 250 STAT STOF 84 Reverberation Time RI60 INTi AUDIO Various error indications are displayed for unsuccessful RT60 measurements Corru
114. ith enter 1 12 Octave Tolerance INTi e Select the time averaged sound level EQ All available selec iriz a tions are Z weighted no weighting EG L2 OCT als Li h h m DIFFERENCE EAH 50 20 eee iE 1B Z TT TETEE Pearce R ao ANGE wo Tds MO cir opogog 1B Z Mn e Select EQ for normal absolute display of measurements yo pge do Teds Ment aetntire e Follow the same instruction and select the lower spectral reading Live e Confirm with enter Press start PE to measure and display the sound levels results indicated with 103 aNTi AUDI 1 12 Octave Tolerance Select the lowest possible input range according to the maxi mum level expected during the measurement e Select the input range RNGE and press enter e Turn the rotary wheel amp to set the applicable input range and confirm with enter 1 12 Oct LA E ast 11 28 g Ef dB iriz OCT tl Live 69 5d E 1 2ZLSAHz Bo 16 E e250 ik 4k ATTIN 40 gai TAi E 104 e The XL2 measures the selected sound pressure lev els Live and EQ All available sound Z weighted no weighting e Press start Dm levels are eee B o ast 44 30 g Ef T12dB 1 12 OCT ae Live traa dE a 2 fZhkHz BO 40 16 bd e250 ik 4k SET M0 puce Tals P Pee lri Chit RR ee pe e Press the stop button Dal to stop the measurement e Select the memory menu with the rotary wheel
115. k1 is measured or manually set in the page KSET of the sound level meter function Applies to time weighting setting PK peak The correction value k2 is measured or manually set in the page KSET of the sound level meter function iue mo Li Actual current sound pressure level Maximum sound level of the measurement cycle Minimum sound level of the measurement cycle No correction value default setting Application example Measure LCpeak In accordance with DIN15905 The RTA spectrum analyzer measures the true peak level with the optional Extended Acoustic Pack The peak hold time can be set to 0 1 or 5 seconds Applicable for timer mode Repeat or Repeat Syn chronized displays the time averaged sound level Leq of the last measurement cycle Appendix INTi AUDIO The statistical distribution of sound pressure levels S is commonly used for environmental noise analy sis such as road traffic or community noise assess ments LAFyx Is the noise level exceeded during xx of the measurement period e g LAF90 is the noise level exceeded during 90 of the mea surement period Please see the specifications at chapter Technical Data XL2 gt Functions of Extended Acoustic Pack optional in this manual Time constant t 1 second the time weighting is an exponential function of time which defines how changes of the instantaneous sound pressure level are averaged fo
116. ker A then arrives at the measure ment position first The acoustic signal from sub speaker B arrives 5 ms later This im proves the subjective directionality percep tion of the listeners Distance in meter feet The distance results in meter feet are displayed below for easy verification of the test results accuracy The readings are based on 330 m s sound speed at 0 C 32 F 95 INTi AUDIO 1 12 Octave Tolerance The Spectral Limits Option extends the XL2 function range with an RTA analyzer with spectral resolutions from 1 1 octave down to 1 12th octave Trace capturing relative curve display and comprehensive tolerance handling are supported in the FFT Analysis and the high resolution 1 12 Oct Tol spectral analysis e High resolution RTA function 1 12 Oct Tol with select able 1 1 1 3 1 6 and 1 12 octave spectral resolution e Capturing of multiple readings into the internal memory e Comparing measurement results against captures with rela tive or absolute curve display e Comprehensive tolerance handling with tolerance masks based on captures for passed failled measurements e Export and import of tolerance and capture files e Frequency band listening at rear speaker 96 e PA rental Verifying the frequency response of returned speakers and microphones against reference records ensur ing they are back in stock In good working condition e Industrial quality testing Passed Failed test in the prod
117. ld instruments cables and connectors NTi Audio 600 000 334 Mechanical adapter piece to mount the XL2 on a microphone stand NTi Audio 600 000 372 The Battery Charger efficiently recharges the spare battery whilst you are using your XL2 Audio and Acoustic Analyzer One spare Li Po battery is included with the battery charger NTi Audio 600 000 332 The Digital I O Adapter serves to control external peripheral devices such as indi cating sound levels that exceed limits on a big external red orange green lamp It connects to the digital I O interface NTi Audio 600 000 380 The XL2 Input Keypad offers four marker keys to trigger an event recording or cat egorize any noise during measurements Requires the optional Extended Acoustic Pack NTi Audio 600 000 384 The XL2 Audio and Acoustic Analyzer con trols the external Stack Light via the Digi tal I O Adapter Box The light has three lamp sections colored green orange and red Applications e Sound level monitoring at live events or clubs The Stack Light shows orange for sound levels near the limit and red at levels ex ceeding the limits e Industrial noise pollution monitoring e Passed Failed measurements requires XL2 Spectral Limits Option NTi Audio Stack Light 600 000 382 Digital O Adapter Box 600 000 381 Further Information INTi AUDIO The precision calibrator is use
118. lisec ond steps e g setting 0 5 equals a settling time of 0 5 seconds If the input level drops below the auto start trigger level during this period no measurement is carried out not mandatory MeasTime Defines the measurement time in 100 millisec ond steps e g setting 1 5 equals a measure ment period of 1 5 seconds not mandatory 146 The various system settings of the instrument can be adjusted as follows Turn the rotary wheel to navigate to the main menu 1 and select System Confirm with enter See set E ast 15 16 Auto power off 16 Min Backlight Auto n Dimmed Date 2Ai2 0r 25 Time rita Action at power on Show profile list Ho Fhonton power Remember Speaker Enabled USB mode Ask on connect Dec separator System Settings INTI AUDIO e Hold down escape and turn the rotary wheel amp until the desired contrast is reached 2 Toggles with the page button between Set System setting Inf System information Sch Scheduler If no button has been pressed for the defined time period then the instrument switches off e Select Auto power off with the rotary wheel Confirm with enter e Set the auto power off time with the rotary wheel Confirm with enter The auto power off mode is disabled when a measure ment is running or when an external mains power supply is used 147 INTi System Settings AUDIO 4 5 Toggle the backlight with the power backlight butto
119. max dB Lae m m dB HANNI g TONON 30 RHGE 130 Sy a0 8s 08 LAF max dE MINNI SEEE 30 ANGE 130 SH of naan LAeq e Choose Select and load the required profile e Wait 10 seconds until the measurement is finished e To return to the full mode either switch off the XL2 amp again or select EXIT Profile in the main menu 132 If you have two or more XL2 Audio and Acoustic Analyzers you may like to transfer the same profiles to the other instru ments e Select Profile in the main menu and press enter e Select Manage and press enter e Select Export to SD Card and press enter e Connect the XL2 to the PC e Copy paste the profile called MyFirstProfile to the PC Profiles INTi AUDIO e Connect another XL2 to the PC and generate a folder called Profiles on the SD Card e Copy the profile called MyFirstProfile into the folder Pro files e Start up the XL2 select Profile in the main menu and press enter e Select Manage and press enter e Select Import from SD Card and press enter If the profile is exported from an XL2 Analyzer with activated options to another XL2 Analyzer without options then these options have to be hidden prior to storing the profile for export e n the exporting XL2 system menu select the individual option and toggle with enter to Hidden e Store the profile in the XL2 Analyzer 133 INTi Profiles AUDIO The XL2 can store up
120. measurement microphones and the micro phone pre amplifier MA220 include an electronic data sheet The Automated Sensor Detection ASD of the XL2 recognizes the sensitivity and calibration data of the connected micro phone The electronic data sheet including the microphone sensitivity is displayed in the menu Calibrte 124 The sound level meter and calibrator should be exposed to the same environmental conditions prior any calibration for the fol lowing recommended periods e 10 minutes after a temperature change of 10 C e 15 seconds after the static air pressure has changed by 5 kPa e 10 minutes after a humidity change of 30 without conden sation The described calibration method and correction data apply for the following environmental conditions e Temperature 10 C to 50 C e Static air pressure 65 kPa to 108 kPa e Humidity 25 to 90 r H without dew from 10 C to 39 C meee SLA Gl asp 13 24 S Sensitivity S11 mPa HYZ60 FACTORY User Calibration RUN Calibrator Level 114 6 dE Lzf S4 rdb ASO Data HTi Audio H4260 SH BALAS9 Factors Sens User Sens S11 mV Fa uP Calibration INTi AUDIO 48V The XL2 provides 48 V phantom power supply to the connection microphone or sensor ASD An NTi Audio measurement microphone with automated sensor detection ASD is connect ed The XL2 reads the electronic data sheet of the microphone and switches the 48V phan tom power automatically on
121. minimum maximum and correction values can be chosen for each displayed result 9 SLHeter FERIA i aso 13 24 g 44 7 0B 2 Lag 44 6dB i LoPeat F6 BdB O R SET so RNGE 250 Lon OM cnom 7 4 5 6 Sound Level Meter INTi AUDIO The real time analyzer page RIA measures and displays the 1 3 or 1 1 octave spectrum from 6 3 Hz to 20 kHz including wideband results The real time spectrum RIA is measured in parallel with the A and Z weighted wideband levels SLMeter ihi ALA E i Asd 13 24 T LFF mgs 65 6 dB 1 3 OCT 17 ta LSP live 38 2dE ZHHHZ 16 11 12 ED uo Seernnanon 13 e0 15 14 rad I BO 250 ik 4k PO zZ TT p SEL cer Hapan 10 ANGE 110 CMT tones a 25 INTi 26 Sound Level Meter AUDIO All sound levels are measured and logged simultaneously You select which sound levels should be displayed e Turn the rotary wheel amp s to select the parameter Lxx e Press enter to open the selection menu and choose the wideband sound pressure level to be displayed e Turn the rotary wheel amp s to select the required test result parameters and confirm with enter e Turn the rotary wheel amp to select the actual test result e Press enter 1x 2x or 3x to set the font size to small medium or large The XL2 shows 3 sound levels on the display if a large font is chosen otherwise it shows 5 sound levels Follow the setting instructions for sound level result
122. n The XL2 includes a real time clock All measurements are The backlight offers three different conditions logged with a date and time stamp e On e Dimmed Set the real time clock as follows e Off e Select the Date function 5 with the rotary wheel e Confirm with enter e Set the date with the rotary wheel Auto On Off The backlight switches off if no key is e Confirm each setting with enter pressed for 2 minutes e Follow the same procedure for Time Auto The backlight dims if no key is pressed On Dimmed for 2 minutes 6 Manual The backlight can be toggled between You may configure the XL2 to start up with individual preset On Dimmed and Off application profiles For example sound level monitoring in accordance with DIN 15905 or SLV e Navigate the cursor to the backlight function e Toggle with enter to set this parameter Yes The instrument starts up with default application protiles Further details about the application pro files are in the chapter Profiles Dimming the backlight reduces the power consumption No The instrument starts up in the last configuration without any application profiles 148 System Settings INTi AUDIO 7 9 You can select if the phantom power should be activated or The following setting defines how the PC recognizes the disabled when the XL2 Is powered up connected XL2 Off The phantom power is switched off when Ask on Select either the Mass storage or COM port the XL
123. n front of the speakers The person taking the measurements should be out of the acoustic field so as not to affect the measurement results For this purpose the measurement microphone can be mounted on a microphone stand and connected with the ASD Cable to the XL2 e Low STIPA readings can be caused by e Excessive sound reverberation echoes or reflections e Poor speaker directivity or speaker coverage e Speaker level setting incorrect e g low signal to noise ratio Besides the comprehensive sound level meter and acoustic measurement functions the XL2 Audio and Acoustic Ana lyzer also offers the analog audio measurement functions RMS THD N and Oscilloscope The XL2 Audio and Acoustic Analyzer measures the parame ters Level RMS THD N and frequency simultaneously RMS THO BREA 13 45 S 2 6 5 DopFite Z WEIGHTING 2 LYLRHS 18 0dBu 3 THOH 93 7dB ta 100 001 Hz Audio Analyzer INT Z Weighting A Weighting C Weighting HP 100Hz HP 400Hz HP 19k 22 4 22 4k AUDIO Frequency Z weighting with flat frequen cy response from 20 Hz to 22 kHz De fault measurement setting Frequency A weighting according IEC 61672 for low noise levels Frequency C weighting according IEC 61672 for high noise levels Highpass 100 Hz 200 dB dec maximally flat magnitude filter e g 60 dB 50 Hz Highpass 400 Hz 120 dB dec maxi mally flat magnitude filter attenuates 50 60Hz components of
124. nt with start Dal The actual measurement time is shown Automatically stops the measurement after the pre set measurement time e Set the required measurement time e Start the measurement Lal Adjustment of preset measurement time for single timer setting 67 INT FFT Analysis Tolerance AUDIO 10 You may select any frequency to read out individual levels The selected frequency is indicated by the cursor arrow Choose between the following settings The cursor follows automatically the highest level e g tracing feedback frequencies at live sound e Select the frequency with the rotary wheel Press enter e You may readout any individual frequency e Return to auto frequency with enter Y H The cursor read out may be set manually to any fre quency The read out remains at the selected fre quency e Select the frequency with the rotary wheel Press enter e Select the frequency of interest Confirm with enter 68 optional applicable with the Extended Acoustic Pack or the Spectral Limits Option Select the readout frequency 10 and press enter The zoom mode is displayed above the flashing arrow Select the zoom in frequency with the rotary wheel Press limit W and zoom the linear frequency scale in or out with the rotary wheel Release limit W and scroll the linear frequency scale left or right with the rotary wheel 48V ASD The XL2 provides 48 V pha
125. ntom power supply to the connection microphone or sensor An NTi Audio measurement microphone with automated sensor detection ASD is connect ed The XL2 reads the electronic data sheet of the microphone and switches the 48V phan tom power automatically on Phantom power is switched off 20k 1k7 200 Usr Set Shows FFT result of the frequency range 484 38 Hz 20 594 kHz in a resolution of 141 62 Hz with 142 bins shown on the display Shows FFT result of the frequency range 58 Hz 1 722 kHz in a resolution of 11 72 Hz with 142 bins shown on the display Shows FFT result of the frequency range 7 Hz 215 01 Hz in a resolution of 1 47 Hz with 142 bins shown on the display Customized zoom mode applicable with optional Extended Acoustic Pack or Spectral Limits Option 5 Hz 20 kHz in zoom mode with a minimum reso lution of 0 366 Hz and 142 bins displayed Selection for FFT Windowing e Hann Default for acoustic measurements e Dolph Chebyshev for analyzing small signals e g harmonics close to a dominant signal The page button switches these display modes FFT Analysis Tolerance INTi AUDIO 69 INTi FFT Analysis Tolerance AUDIO The XL2 displays two different sound pressure levels at the same time You configure to display either the levels Live e Connect the measurement microphone to the XL2 Max Min EQ or captured results Switch on the XL2 e Select the upper result paramete
126. o the delay test signal again Press the store button to record the actual delay 7 of the reference speaker Individually stored reference delay time e g speaker A as described in the following chapter Delay Measurement Getting Started 4 Calculated Distance Distance from measurement position to speaker in meters or feet based on the defined temperature in C or F Synchronization TimeB ar The automated synchronization allows delay time measure ments without any connected electrical reference signal for 100 seconds using the NTi Audio Test CD or 300 seconds using the Minirator MR2 or MR PRO It displays the time remaining until the next required synchronization 6 Calculated Delay Time Store Actual Calculated difference between delay time of speaker A and speaker B as shown on the next page The automated dif ference calculation simplifies the verification of delay line arrangements such as those used in larger halls or audi toriums Actual Delay Actual measured delay time referring to the electrical refer ence signal Delay Time INTI AUDIO Delay Test utilizes VoiceNote Microphone The XL2 uses the internal VoiceNote micro phone to measure the acoustic delay Do not connect any measurement microphone to the XL2 for the delay time measurement Rear Speaker The rear speaker on the XL2 is disabled during delay measurements thereby avoiding mea surement failures The headphone output is ac
127. ound Level Meter e Select the frequency weighting A e Select the required time weighting e g LF Fast SLieter 123 LR asp 13 24 S SLieter 123 LR 4 asp 13 24 S FRED WEIGHTING FRED WEIGHTING AF GLC Z HAF LAL 0 B f TIHE HEIGHTING 4 s re VEQ E Lae dB Lae dB LAF max Se dB LAF max es ices ica dB TTT 5 SET AALDOALEONITIIINI SET 10 RHGE 110 CHT 10 RHGE 110 CHT Pop up windows shown at installed Extended Acoustic Option Confirm with enter Confirm with enter 34 e Select the parameter live SLMeter 123 LAR E lt ast 13 24 S FRED WEIGHTING LAF TIHE HEIGHTING 3 PARAMETER LAeq 9 maz min T2 JE Ts fse LAF max mee LUULU LLLLT g EL i0 HGE 110 RHETT HH e Confirm with enter Sound Level Meter e Select the parameter off LAF TIHE HEIGHTING 3 FARAHETER live Lae LaF max CORREKTION TTT in RH GE 440 e Confirm with enter SLMeter 123 LAR E lt ast 13 24 S FRED HEIGHTING INTi AUDIO 35 INTi Sound Level Meter AUDIO e Select the lowest possible input range according to the maxi mum level expected during the measurement Wrong Input ranges are indicated by a flashing LOW or OVR message in ASD 17 24 S the lower menu bar e Select the input range RNGE and press enter e Turn the rotary wheel amp to set the applicable input range and 0 3 R confirm
128. ound pressure levels shall be logged over time Choose between ALL Logs all sound pressure levels Selected Logs up to 10 different individually de fined sound pressure levels For details refer to the chapter Logging 24 tended Acoustic Pack The XL2 event feature offers the following functionalities e Automated event triggered at noise levels above below a preset value including setting markers for specific noise categories Application example Re cording the noise level for LAF gt 80 dB e Event triggered by external keypress of the XL2 Input Keypad You can utilize four keys 1 4 to cat egorize any noise of interest or noise to be later excluded in the post processing A typical applica tion is categorizing any annoying industrial noise by persons living in the neighborhood Here you set the function of the limit LED ri thereby highlighting any sound level that exceeds the pre set limits in orange or red color Further external peripherals are controlled by the op tional Serial I O Interface based on the sound level such as displaying sound levels on a large external red orange green lamp For details refer to the chapter Limit Setting The numeric result page displays the selected broadband sound level results You can change the font size of the result Depending on the font size chosen the XL2 shows three or five results simultaneously Individual frequency weighting time weighting actual
129. port txt 4 od MyTest_SLM_000_4udio_F5133 0dB PK _ O0 way 5 E MyTest_S5LM_000_RTA_3rd_Log txt 6 ve MyTest_S5LM_000_voiceMote way 7 lak MyTest_SLM_O01_Screenshot bmp system file for use by XL2 only It contains the measure ment data and test configuration of the last measurement cycle for later reload and view of measurement results in the XL2 The XL2 logs sound levels in pre defined log time intervals For more details please see the chapter Sound Level Me ter gt Logging Final report after the completed measurement For more details please see the chapter Sound Level Meter gt Reporting The wav file is the recorded audio file The index FS133 0dB PK in file name represents the full scale peak level of the recorded wav file For more details please see the chapter Sound Level Meter gt Wav File Record ing The XL2 logs the detailed real time analyzer spectra in pre defined time intervals For more details please see the chapter Sound Level Meter gt Logging A voice annotation can be recorded for each stored mea surement or screenshot For more details please see the chapter Data Management gt Voice Notes Picture of the actual XL2 display Data Management INTI AUDIO e Drag and drop the required data files to the PC Alternatively the SD Card can be inserted into a card reader This offers a faster data transfer from the SD Card to th
130. pt cycles can be deleted individually These results are then excluded trom the average calcula tions e LOW LEVL This is the abbreviation of low test signal level during the measurement Increase the test signal level until the black level markers exceed the grey level markers in every fre quency band Also ensure that the level falls below the grey level markers otherwise use a RI60 test signal with longer on off times e CORR lt 70 The correlation factor is lower than 70 indicating an unreli able measurement result e T gt 18S The measured reverberation time exceeds the time limit of 18 seconds This is commonly caused by either an incorrect analyzer range setting or environmental noise In the first case choose another range setting In the second case en sure that the environmental noise remains constant during the measurement and or SET the level markers again while the environmental noise is high 85 INT Polarity AUDIO Polarity measurement Is important in matching the left and right speakers for a good stereo sound image The polarity function measures the polarity of cables single speakers and speaker cabinets For testing use the polarity signal provided on the NTi Audio Test CD or the Minirator test signal generator The polarity of individual speakers or speaker cabinets might change with the frequency For example the mid range speak er polarity may differ from the woofer polarity within the same
131. r in 1 1 or 1 3 octave band resolution The RTA perfectly suits tasks such as optimization of sound systems 22 The Extended Acoustic Pack offers the following additional fea tures for sound level and acoustic measurements SLMeter RTA function Recording of linear wav files 24 bit 48 kHz Percentiles for wide band and spectrum LAF1 LAF5 LAF10 LAF50 LAF90 LAF95 LAF99 Sound Exposure Level LAF 100ms logging Event triggered audio and data recording Time weighting Impulse Lxl Lxleq with x A C Z True peak level in 1 1 and 1 3 octave resolution Clock Impulse Maximum Level TaktMax and values as specified in DIN 45645 1 FFT function High resolution Zoom FFT with selectable frequency ranges and resolution up to 0 4 Hz in the range of 5 Hz to 20 kHz RT60 function Reverberation time RI60 in 1 3 octave resolution Sound Level Meter INTi AUDIO The sound level meter offers different pages Displays the selected broadband sound level results You can change the font size of the result Depending e Press page to toggle between the numeric result page on the font size chosen the XL2 shows 3 or 5 results and the RIA page simultaneously Individual frequency weighting time weighting actual minimum maximum and correc tion values can be chosen for each displayed result e Select the sound level page with the rotary wheel Confirm with enter Displays the 1 3 or 1 1 octave spectrum o
132. r useful sound level results Clock Impulse Maximum Level Taktmaximalpegel LAFT3 In accordance with DIN 45645 1 Maximum sound pressure level measured with fre quency weighting A and time weighting F within a time interval of 3 seconds 213 INTi AUDIO Appendix Te Time average Clock lmpulse Maximum Level 214 Taktmaximalpegel LAFT3eq in accordance with DIN 45645 1 Clock Impulse Maximum Level Taktmaximalpegel LAFT5 In accordance with DIN 45645 1 Maximum sound pressure level measured with fre quency weighting A and time weighting F within a time interval of 5 seconds Time average Clock lmpulse Maximum Level Taktmaximalpegel LAFT5eq In accordance with DIN 45645 1 In the film and recording industry an X curve is also known as a wide range curve e g used for cinema installations conforms to ISO 2969 z Overall sound pressure level all sound signal com ponents are included required for special applica tions Display LAE LAFmin LAeq Appendix Application The sound exposure level LAE Is the LAeg normalized to 1 sec ond The sound exposure level is measured to compare noise events with different time durations The LAE reports the amount of noise from an event such as an individual aircraft fly over LAE LAeq 10 x log time in seconds SPL with A frequency weighting and F time weighting compen sating for human hearing perception at lower sound pressure lev els applicabl
133. r with the rotary wheel B FFT dik LR el Ast 13 24 TB dE e Position the XL2 at the measurement location using a micro ae Live So 7de a 17S 19Hz phone stand or tripod Hi 100 40 58 00 Hz amp 1 1kH2 1 12 kHz LLELLE SET q pHggim TA ls E e Confirm with enter 70 FFT Analysis Tolerance INTi AUDIO e Select the integrated averaged reading EQ All available se FFT lections are Z weighted no weighting _ Fi a Lit UNIAN NN s0 GHG iso eos E e Select EQ for normal absolute display of measurements e Follow the same Instruction and select the lower FFT read ing Live e Confirm with enter Press start D to measure and display the sound levels results indicated with 71 INTi FFT Analysis Tolerance AUDIO e Select the lowest possible input range according to the maxi The XL2 measures the selected sound pressure lev mum level expected during the measurement els Live and EQ All available sound levels are e Select the input range RNGE and press enter Z weighted no weighting e Turn the rotary wheel amp to set the applicable input range and Press start gt m confirm with enter FFT dik sR El ast 13 24 a Ef 7 0b tla Live Go AdE a 69 r 19Hz FFT ASD 13 24 S T EQ 103 5 dE O limit amp 120 th Live 11 4dE 1 55 00 Hz a iii 40 SB 00 Hz c 1 1kH3 1 12 kHz T SET 40 gaai T
134. re Select the Capture amp Start Tolerance Mode symbol Confirm with enter Select Save tol to SD Card to export the capture tolerance file This file includes the reference capture and the tolerance data The XL2 generates a txt file in the folder Tolerances e Open the capture tolerance file with a text editor or MS Ex cel Edit the tolerance data according your requirements You may delete any unused frequencies All remaining frequency data has to remain the same Any frequency changes will be discarded by the xL2 e Store your individual tolerance file as txt file in the XL2 folder Tolerances e Start the XL2 tolerance mode and load the new tolerance file from the SD Card e All entries in the customized tolerance file need to be tab separated e The individual tolerance file entries may be in any order no sequential order required e Tolerance file templates and standardized tol erance files are a free download for all regis tered XL2 customers on the support website at http my nti audio com For details see the chapter Registration in this manual Capture Tolerances Unit dBr Mode HighLow Columns Frequency Min ATolerances UNDEF 80 ZTolerances UNDEF 80 BandTolerances LevelOffset 0 HideUnusedBands false nAllowedViolations 0 Ideal undef undef 90 90 INTi AUDIO 143 INTi AUDIO Unit Mode Columns ATolerances C
135. red in append mode B Continue append Continue append on file My Test_SLM_age 7 es Ho Lal Continue rare LAF max qg dE Initializing IHIN SET ue ret 30 RHGE 130 Al ponon e Select Yes and continue adding measurement results to the Select Continue and add further measurements to the same same report file in the append mode report file in the append mode 170 The XL2 Projector displays the XL2 screen in real time on your PC when connected by USB The software toolbar en ables control of the XL2 Audio and Acoustic Analyzer with the mouse and keyboard XL2 Projector software is a free down load for all registered XL2 customers on the support website at http my nti audio com The XL2 Projector background color synchronizes with the XL2 limit button color The XL2 Projector uses the USB connection in COM port mode INT AUDIO XL2 Projector Installation instruction e Disconnect the XL2 Analyzer from the PC e Register your XL2 and download the XL2 Projector software from the XL2 Support Page on htto my nti audio com e Unzip the file XL2 Projector Setup Vxx zip on your PC e Start the software installation and follow the instructions including driver installation e Start the XL2 Projector software e Start the XL2 Analyzer and connect it to the PC SLMeter 123 LAR E lt ast 17 01 S LAF USE Hode i Select USE mode Mass storage COM port Buick charge LE SH
136. removable SD Card Additionally wav files might be recorded and individual voice notes added for a complete documentation of the measurement e Carry out a sound level measurement e Select the memory menu in the upper menu bar e Press enter The memory menu opens FOLDER MEH DIR HFroject HomingtSoyving manual Save Test Save Screenshot Logd Test COLLECT RESULTS IN OnE FILE L Start Append Mode Aeq Gl 3323 5 HEVTE FREE HRITE 7 l LAF max CACHE EHFTY OULD UUNUUUUANUUUUUI p SET 10 HGE 110 Cnt Goo 3o 154 Add a new folder with an individual project name The maxi mum length of the project name is 16 characters A fast way for creating new folder names is e Select an existing folder name with DIR e Select NEW e Rename the folder and confirm with start Dal thereby creating a new folder name An overview of all existing project folders is shown Select a folder to store the results of the measurements All measurements are stored in this project folder Setting of auto or manual data Tile naming and saving auto manual The results are named and stored automati cally in the selected project folder The question mark shows up in the upper menu bar upon the completed measure ment You can choose to individually name and store each single measurement Stores the measurement in the selected project folder Stores the XL2 screen in the selected project folder Loads back
137. ressure level is just above the residual noise of the connected NTI Audio measurement microphone which re duces the measurement accuracy Sound Level Meter INTi AUDIO The run indication shows the measurement status running paused or stopped Various measurement settings are locked during ongoing measurements such as changing the Input ranging or the preset measurement time Counts actual measurement time in hrs min sec Supports time modes continuous single and synchronized repeat Clit applicable for standard measurements All values are recorded and monitored continu ously after starting a measurement with start Dal The actual measurement time is shown Automatically stops the measurement after the pre set measurement time e Set the required measurement time e Start the measurement Da e All measurement results may be recalled 27 INTi AUDIO Sound Level Meter Provides automated repeated measurements with user defined preset measurement time cycles e Set the required measurement time e Press start Dal For consecutive storage of all measurement cy cles select the parameter Naming Saving auto in the memory menu Each Individual cycle result is then automatically stored to the SD Card Provides automated repeated measure ments synchronized to the XL2 real time clock Press start D l to begin the measurement In order to align the selected preset measurement time with the real time clock
138. rrow 10 B Choose between the following settings Userselectable display of broadband results The cursor follows automatically the highest level A A weighted broadband sound pressure level e g tracing feedback frequencies at live sound e Select the frequency with the rotary wheel Q C C weighted broadband sound pressure level Press enter e You may readout any individual frequency Z Broadband sound pressure level without any fre e Return to auto frequency with enter quency weighting none Fl The cursor read out may be set manually to any frequency band or wideband level The read out re mains at the selected frequency e Select the frequency with the rotary wheel e Press enter e Select the frequency of interest Confirm with enter 100 Set the spectral result display to 1 1 1 3 1 6 or 1 12 octave band resolution as follows e Turn the rotary wheel amp to select the parameter 12 e Press enter to open the selection window e Turn the rotary wheel to select 1 1 OCT 1 3 OCT 1 6 OCT or 1 12 OCT e Press enter to confirm 48V The XL2 provides 48 V phantom power supply to the connection microphone or sensor ASD An NTi Audio measurement microphone with automated sensor detection ASD is connect ed The XL2 reads the electronic data sheet of the microphone and switches the 48V phan tom power automatically on Phantom power is switched off 1 12 Octave Tolerance INTi
139. rt of tolerance and capture files 195 INTi AUDIO Specifications Acoustic Analyzer FFT Analysis Reverbera tion Time RT60 Delay Time 196 e Real time FFT with actual level Leg Lmin Lmax e Level resolution 0 1 dB e Ranges 7 Hz 215 Hz 58 Hz 1 72 kHz 484 Hz 20 5 kHz with 142 frequency bins shown on display e Optional High resolution Zoom FFT with select able frequency ranges and resolution up to 0 4 Hz in the range of 5 Hz to 20 kHz e Optional Capture and tolerance function with mul tiple readings for comparative measurements and passed failed analysis e 1 1 octave bands results from 63 Hz 8 kHz based on 120 e Optional 1 3 octave bands results from 50 Hz 10 kHz based on 120 e Range 10 ms 14 seconds e Measurement in accordance with ISO 3382 using Schroedermethod e Test signal Impulse source or gated pink noise generated by the MR PRO MR2 or the included NTi Audio Test CD e Propagation delay between electrical reference signal and acoustic signal using the internal micro phone e Range 0 ms 1 second 0 m 344 m e Resolution 0 1 ms e Test signal NTi Audio delay test signal generated by the MR PRO MR2 or the included NTi Audio Test CD Polarity 1 12 Octave Analysis optional Cinema Meter optional STIPA Speech Intelligibility optional e Checks polarity of speakers and line signals e Positive Negative detection of wideband and individual 1 1 octave
140. s the actual and averaged measurement results The XL2 Analyzer provides three input ranges to accom modate the wide range of input signals The individual rang es are based on the microphone sensitivity setting in the calibration menu of the XL2 For example at a sensitivity S 20mV Pa the input ranges are e Lower range 10 110 dBSPL e Middle range 30 130 dBSPL e Upper range 50 150 dBSPL Select the lowest possible input range according to the maximum level expected during the measurement e g if the sound pressure will be always below 110 dBSPL then select the lowest input range 10 110 dBSPL Offers selectable time weighting of 0 1 0 2 0 5 and 1 0 second Applications Short Time High resolution in time with minimum Weighting averaging Long Time Low resolution in time with longer aver Weighting aging The run indication shows the measurement status running paused or stopped Various measurement settings are locked during ongoing measurements such as changing the Input ranging or the preset measurement time For passed failed measurements with the Spectral Limits option the run indication may display A for a preset auto mated level trigger FFT Analysis Tolerance INTi AUDIO 8 Counts actual measurement time in hrs min sec Supports setting of time modes continuous and single Clit applicable for standard measurements All values are recorded and monitored continu ously after starting a measureme
141. sed frequencies All remaining frequency data has to remain the same Any frequency changes will be discarded by the xL2 Load the new capture file with Manage captures back into the internal XL2 memory Capture Tolerances Blank the upper parameter by setting Select the lower parameter with the rotary wheel O Confirm with enter Select Live and confirm with enter 1 12 tla Li Bo BO 40 20 iE UUUUUIUII Select Live for displaying the relative difference Confirm with enter 40 pHGE i40 e415 E 31 S lz OCT Select reading mode h h DIFFERENCE thal Mik HAL CNT ot ae Select Ref and confirm with enter Set the Yaxis accordingly to show the zero line INTi AUDIO 137 INTi AUDIO 138 Capture Tolerances 112 Oct LA E 4 aso 12 43 S ieas dE iriz OCT t Live Fet 2AA dE Ta 2 300 kHz r 40 20 iE E63 250 ik 4k iBkAZ TT Sey s lt ieetes 40 PAGE ado Teds MO eapansae es Ht T e Select the Capture amp Start Tolerance Mode symbol with the rotary wheel O 1712 Oct tn SLA A EQ g4 dE ib bd e250 ik MININ 40 BG ido Cols E e Confirm with enter Live zrade a 2 128kHz 1 12 ctjin LA E Capture E th Capture Liwe Manage captures 100 HO BO 40 20 16 E 250 ik UVUNUINIII 40 EHGe iuo Teis E e Select Start tolerance mode e Confirm with enter Capture Tol
142. stallations Installed Sound Life Safety Systems AV Installations Cinemas Noise Measurements Live Events Environmental Noise Occupational Health Vehicle Noise Live Sound Sound Level Monitoring Front of House PA Rental Broadcast Building Acoustics Industrial Quality Control and Aerospace Introduction INT AUDIO The XL2 push buttons are displayed as icons esc Dm La Li 6 A detailed description of the push buttons is listed in the chapter Overview Operation Menu items displayed on the XL2 page screens are shown In this user manual by a bold font e g SLMeter Parameter INTi AUDIO Introduction The following items are included with the respective type ap proved model XL2 M2230 XL2 M2210 XL2 M4260 XL2 Analyzer M2230 Measurement Microphone 50 mm Windscreen Microphone holder MH01 with Adapter 5 8 3 8 Individual Frequency Response Chart Test Signal CD Li Po battery USB cable Hand strap Operating manual XL2 without Micro phone XL2 Analyzer M2210 Microphone with pouch 33 mm Windscreen Microphone holder MH01 with Adapter 5 8 3 8 Test Signal CD Li Po battery USB cable Hand strap Operating manual XL2 Analyzer M4260 Microphone with pouch 33 mm Windscreen Microphone holder MHO1 with Adapter 5 8 3 8 Test Signal CD Li Po battery USB cable Hand strap Operating manual
143. sult page and the real time ana lyzer page use the same input range 41 INTi Sound Level Meter AUDIO e The XL2 Is ready to display the measured sound pressure levels L7Fmax and LZFlive e Press start Dm SLheter hl LA E i asb 13 24 LZF mgs 65 6dB 173 OCT als LEP Live J dE h 20 Hz esi eik Ae LLULL p SET i0 Cnt aa FRHGE 110 He ee 42 e Press stop Dal eter ASD 13 24 Gi ean T34 dB 1 3 OCT mu L2Flige S2e7dE nH 28 6H2 BO 40 20 250 20k AZ UUANNAUNOUAUUANII i albeit aa 10 HGE 120 cit coe leos The XL2 stores the numeric sound pressure levels and the real time analyzer results simul taneously Sound Level Meter INTi AUDIO e Select the memory menu with the rotary wheel confirm with enter SLMeter lb SLAY aso 13 24 a m LFU H Froject A manual JE Test hs il 250 20k Az Ses TEE DUUNUAUANONUNUAUONE OA SET set cetee 30 PHGE 130 FREE 18r4 r FREE 18T4 7 Mbyte Logd Test minti nin f me COLLECT RESULTS IN one FILE Start Append Mode CMT oe ee e Press enter to store the test results as an ASCIl file or select Save Screenshot to store the screenshot 43 INTi Sound Level Meter AUDIO AN The correction value page offers a measurement wizard for live event monitoring applicable in case the measurement location differs from the loudest position in the live event area The goal at live event monitoring is
144. t the sound level LAeg Select the memory menu with the rotary wheel and confirm with enter e Select Start Append Mode and confirm with enter SLHeter 123 4 Lh E lt ast 13 24 S HomingtSoyving manual Save Test Save Screenshot Logd Test LAF 3323 aca FREE HRITE CACHE EHFTY LAF maze AEAEE SET 5O ue 30 AHGE 130 a REL 167 INTi Data Management AUDIO e Measure the sound level LAeg on the first position e Select the memory menu and Append Data SLMeter 123 4 LAL ED ast 13 24 S E E SLMeter 123 SLAAT lt asp 13 24 S Lae MyePro pect FOLDER Start Append Mode Lae MyProject File Mv Test SLM_be6_86 File RENAHE SEARCH Mv Test _ SLM_AAB E Automatic Humbering Auto Append is OFF Auto Append is OFF Exit Append ITAD FREE 19874 2MByte CAHCEL Lar CJ wt a LID LaFmax LEPCHE_EHFTY a0 RHGE 40 H SO cre MT mw T0000 40 RAGE 130 n HEHHEE e Select the user part of the file name The maximum length of the user part is 12 characters The right part _SLM_001 is defined by the XL2 to avoid overwriting of existing measure ments whereby SLM is the appendix for the measure In append mode the XL2 does not store ment function and 001 is an automatically incrementing e Log files number e Wav tiles e Select START and confirm with enter e Repeated report files generated in timer mode repeat and repeat synchronized 168
145. tch off the XL2 e Insert the SD Card into the XL2 Analyzer e Switch on the XL2 The XL2 writes the data structure automatically to the in serted SD Card INTi AUDIO Further Information Stored Data or Wav files not available on SD Card The file system might be corrupted e On the PC right click on the NTi Audio XL2 drive select Properties and click Check Now as shown below e Thereafter all stored data should be available again NTi Audio XL2 E Properties General AutoPlay Tools Hardware Sharing Error checking This option will check the volume for F gt errors Check Now Defragmentation amp This option will defragment files on the volume Defragment Mow Backup This option will back up files on the volume 179 INTi Further Information AUDIO You will find information about the installed firmware ver sion in the systems settings of the instrument The firm ware revision history is listed on the XL2 Support page http my nti audio com Updating the firmware on the XL2 is executed by placing the XL2Vxxx xx Tile in the root directory of the XL2 When started the XL2 automatically completes the firmware update gt Projects xiz htm sL SYS This file opens the XL2 instrument status page for online e Firmware updates e Activation of options 180 Start the XL2 and connect it to the PC The XL2 displays the pop up windo
146. te and time of the record ing within the wav file according to EBU TECH 5 3285 This information is available through For wav tile recording over longer periods the XL2 splits protessional audio video tools typically used in the audio data Into individual wav files with about 500 MB broadcast compressed audio 12 hours linear 1 hour keeping the file size small for easier handling on the PC The number 5 increments for each successive wav file 52 The advantage of wav tile recordings is to identify and docu ment sound sources after the measurement For example at a live event an excessive peak level may have been measured and logged Actually this peak level was caused by people shouting nearby the measurement microphone and not by the audio system being monitored The recorded wav file assists in verifying this and the test results can then be post processed If any ongoing measurement Is paused Li the XL2 continues the recording of wav files during the paused period The logged data and audio data can be synchronized using the stored real time information The wav files are stored in a folder named for example 2011 11 30_SLM_000_AudioEvent_0001 0200 The actual wav files are named for example as Xxxx_FS133 0dB PK wav xxxx incrementing number INTi AUDIO Sound Level Meter Another example is environmental noise monitoring Listening to the recorded wav file after the measurement may help to determine
147. the XL2 recognizes this interruption triggers measures the decay time and calculates the reverberation time automatically Fire an impulse sound source in the room under test e g use a starter pistol The XL2 measures the decay time and calculates the reverberation time automatically Do not fire the next shot until the previous calculation is complete i e until the status 4 displays ARMED INTi AUDIO Reverberation Time RI60 The XL2 reads the electronic data sheet of any connected ASD microphones provided by NTi Audio and switches the 48V phantom power automatically on as follows e Connect the measurement microphone to the XL2 Switch on the XL2 e Position the XL2 at the measurement location using a micro phone stand or tripod e Select the RT60 function in the measurement menu and toggle with page to the run page RUN e Prepare the environment for the measurement For example mute all sound sources to establish silence 81 INTi Reverberation Time R T60 AUDIO e Select the parameter SET with the rotary wheel and Protect the ears against high sound pressure levels as the press enter test signals might be very loud Setting the pink noise level e Start the pink noise test signal with the appropriate on off time according to the room Use an initial low level e Increase the test signal level until all level markers for the RTA RUA LR Gl ast 13 24 g minimum test signal level are passed Use an
148. the XL2 shortens the first cycle to match the real time clock syn chronization All following measurement cycles are synchronized to the real time clock For example the cycle time setting is 30 minutes and the measurement starts at 750 a m gt the first test cycle measures from 750 8 00 a m Thereafter a new test cycle starts automatically for 30 minutes The 30 minute cycles repeat until the measurement is stopped The measurements in the synchronized repeat timer mode start exactly on the half or full hour in accordance with DIN 15905 Adjustment of preset measurement time for single and re peat timer setting 48V The XL2 provides 48 V phantom power supply to the connection microphone or sensor ASD An NTi Audio measurement microphone with automated sensor detection ASD is connect ed The XL2 reads the electronic data sheet of the microphone and switches the 48V phan tom power automatically on Phantom power is switched off 10 This field offers two functions e Symbols for measurement results 15 Upper RIA parameter displayed as line uu Lower RTA parameter displayed as bargraph Sound Level Meter INTi AUDIO e Capture One of the displayed RTA readings may be captured Any measurement data can then be compared with this cap tured reference live on the XL2 Analyzer For example compare the RTA spectrum of the left and right speak ers e Select the parameter to be captured e Confirm with enter
149. the predominant sound source The XL2 Analyzer preserves the original absolute test signal level in the recorded wav tile The XL2 Analyzer provides three input ranges to accom modate the wide range of input signals The dynamic range of the recorded wav file is set according to the selected in put range For example at a microphone sensitivity of S 20 mV Pa the full scale peak level is Range Name Range Level Full scale peak level Lower range 10 110 dBSPL 117 8 dBSPL Middle range 30 130 dBSPL 135 9 dBSPL Upper range 50 150 dBSPL 159 9 dBSPL Select the lowest possible input range accord ing to the maximum level expected during the measurement e g If the sound pressure will always be below 110 dBSPL select the lowest input range 10 110 dBSPL 53 INTi AUDIO Sound Level Meter The event function is available with the XL2 Extended Acoustic Pack Option The XL2 Analyzer may be configured to record wav files and additional noise levels only when triggered in stead of the complete measurement duration Reduces the data volume acquired thereby e Simplifying data post processing of the complete measure ment period e Saving data memory for long term measurement applica tions Events are triggered either automatically by sound levels above below a preset value or manually by external keypress using the XL2 Input Keypad 54 The XL2 event feature offers the following functionalities e Automated event trig
150. to 20 individual profiles in the internal secured Secured profiles are locked user profiles with system memory and offers three different profile types profiles overwrite protection indicated by the Tile name ending in xxx prfs This file name cannot be Types Description overwritten Sample filename MyFirstProfile prts Factory The XL2 includes factory default profiles which default are marked with in the beginning of the file How to generate secured profiles profiles name Sample filename DIN15905 5 prfs e Export the profiles to SD Card according to the procedure in the chapter Profile Getting The factory default profiles are a free Started download for all registered XL2 cus tomers on the support website at http my nti audio com For details see the Connect the XL2 to the PC Select the user profile in the folder Profile Manually change the ending of the user pro chapter Registration in this manual file from xxx prfl to xxx prfs e Disconnect the XL2 from the PC For detailed settings of factory default profiles e Import the profiles from the SD Card please see the Appendix 2 in this manual Power off on the XL2 Analyzer User User profiles are profiles generated by you on profiles the XL2 Analyzer Sample filename MyFirstProfile prfl 134 Capture Tolerances INTi AUDIO e Select the Capture amp Start Tolerance Mode symbol for cap turing the measurement result The
151. uction line or during service of any audible quality criteria such as with motors machines vacuum cleaners e Cinema Comparing frequency responses against an ideal response curve according the X Curve requirements The XL2 Analyzer compares spectral measurements against a tolerance band and visualizes exceptions in every frequency band The passed failed condition is further visualized by the limit button W and forwarded to the I O interface of the instru ment in order to drive an external alarm device such the acces sory SPL Stack Light Tolerance curves can either be imported from txt files or direct ly derived from captured measurements The XL2 calculates tolerance bands based on e Single captured results e Manually generated txt files on the PC e Mean average of multiple captures e Min Max curves of multiple captures eee LR Gt ast 10 00 E T t dE iri OCT aa Lite 43 50B 1 2 308 kHz Bo BO 40 16 E 250 ik 4k LBk A zZ i M0 ANGE 140 TOds Wo cnragepg ig 1 12 Octave Tolerance INTi AUDIO This field offers two functions e Symbols for measurement results 2 Upper parameter displayed as line us Lower parameter displayed as bargraph e Capture amp Start Tolerance Mode The displayed spectral readings may be captured in C1 C8 for e Comparing measurement results against captures with relative or absolute curve display e Creating tolerance masks based on captur
152. ution 3 digits dB scale 5 digits linear scale or 6 digits x1 scale e Range 9 Hz to 21 3 kHz e Resolution 6 digits e Accuracy lt 0 003 e Range 100 dB to O dB 0 001 to 100 e Minimum level gt 90 dBu e Fundamental frequency range 10 Hz to 21 3 kHz e Measurement bandwidth 5 Hz to 23 6 kHz e Resolution 3 digits dB scale or 4 digits linear scale e Residual THD N XLR RCA input lt 2 uV Auto ranging auto scaling e Frequency weighting A C Z e Highpass 100Hz 400 Hz 19 kHz e Bandpass 22 4 Hz 22 4 kHz in accordance with IEC468 4 e Querying measurement data online via the USB interface Specifications INTi AUDIO Input Output Interfaces Audio Inputs Audio Outputs USB Inter face Digital I O TOSLink Memory e XLR balanced with input impedance 200 kOhm phantom power 48 V switchable automated sensor detection for NTi Audio s ASD measure ment microphones and pre amplifier MA220 e RCA unbalanced with input impedance gt 30 kOhm e Built in condenser microphone for polarity testing delay measurements and voice note recording e Built in speaker e Headphone connector 3 5 mm Minijack Stereo USB mini connector for data transfer to PC XL2 Projector and or charging of Li Po battery Connection interface to accessories e XL2 Input Keypad e Digital I O Adapter Box e Digital I O Adapter PCB 24 bit linear PCM audio signal output prepared for later firmware
153. ution optional with Extended Acoustic Pack Choose between the following settings ALL Logs all available sound pressure levels with out correction values Selected Logs a subset of up to 10 different sound pressure levels including correction values If you require e Select Log Values with the rotary wheel e Press enter to toggle between All and Selected 51 INTi Sound Level Meter AUDIO Sample name of wav file MyTest_SLM_000_Audio_FS133 0dB PK _00 wav The XL2 records a wav file of the measured input signal and stores it on the SD Card The available formats are e Compressed default using ADPCM compression A new l 2 g 4 wav file is started automatically after 12 hours of recording typical maximum wav file size 512 MByte 1 e Compressed AGC compressed with automated gain con File name defined by user trol The gain control increases the level of low level signals so that the wav file is well leveled during playback on the 2 Pe Measurement function e 24Bit_48kHz linear wav file logging in 24 bit 48kHz resolu tion with the optional Extended Acoustic Pack A new wav 3 file is started automatically after 1 hour of recording typical Automatically incrementing file number maximum wav file size 512 MByte Audio file with full scale peak level In case of a Com pressed AGC recording the file name reads AGC this file contains corrected level information only The XL2 stores da
154. vel e g tracing feedback frequencies at live sound e Select the frequency with the rotary wheel Q Press enter e You may readout any individual frequency e Return to auto frequency with enter Sound Level Meter r he cursor read out may be set manually to any H frequency band or wide band level The read out re mains at the selected frequency e Select the frequency with the rotary wheel e Press enter e Select the frequency of interest Confirm with enter Set the RTA result display to 1 1 octave or 1 3 octave band resolution as follows e Turn the rotary wheel amp s to select the parameter 7 e Press enter to toggle between 1 1 OCT and 1 3 OCT to set this parameter INTi AUDIO 31 INTi Sound Level Meter AUDIO In case the measurement result exceeds the preset measure ment range then limit arrows d amp d amp indicate this overload condi tion The arrows amp are displayed for minimum 1 seconds and as long as the overload exists Furthermore the once exceeded measurement range triggers the OVR indication in the bottom line which remains displayed for the complete measurement period These exceeded range indications are reset at starting a new measurement Possible causes for exceeding measurement ranges are e The selected measurement range is lower than the actual level gt select the next higher measurement range or reduce the input signal level as applicable e The input
155. w USB Mode Select Mass storage The PC thus recognizes the XL2 as a mass storage device Double click the file xI2 htm 1 The web screen XL2 In strument Status opens Select Look for FW Updates The web screen XL2 Sup port Page opens Compare the firmware version to the latest version avail able If an update is required download and save the firmware file XL2Vxxx xx into the XL2 root directory Remove the USB cable and power up the XL2 e Watch the display and wait until the update is finished If you have no web access at all please contact the local NTI Audio partner You will receive the new firmware file The System menu shows the installed options on the XL2 The following options extend the measurement functions of the XL2 NTi Audio 600 000 338 The XL2 Analyzer measures the speech intelligibility according to the latest revision of standard IEC 60268 16 2011 edition 4 and older editions It includes ambient noise correction and automated averaging of measurements The XL2 displays the measurement results as STI or as CIS results accompanied by the individual levels and modulation indices of the seven octave bands The measurement results are acquired from the dedicated STIPA test signal source e NTi Audio TalkBox acoustic signal generator required for audio systems with voice microphones thus measuring the complete signal chain e Minirator MR PRO test signal generator required for
156. xternal calibration device is available set the sensi tivity of non NTi Audio microphones manually according to the product specifications as follows e Select Sensitivity 2 with the rotary wheel e Press enter and adjust the sensitivity with the rotary wheel in 0 1 mV Pa steps The setting range 100 uV Pa 9 99 V Pa is supported Confirm with enter Calibration INTi AUDIO 127 INTi Profiles AUDIO Profiles are templates of measurement setups You may define which profile is loaded at startup so that the measurements are carried out always with the same setup and instrument set tings A remarkable advantage of the XL2 is the flexible user inter face The measurement screens may be personalized and only a limited subset of the comprehensive functionality enabled to create simplified operator interfaces Advanced users may access all menus settings and store their preferred measure ment configurations For simplicity the XL2 Audio and Acoustic Analyzer offers fixed operator interfaces with specific pre de fined settings The XL2 can boot up with exactly the required measurement parameters according to the pre defined instru ment configurations This ensures accurate measurements are achieved in both advanced and basic usage environments 128 e Select Show profile list 1 in the System menu e Press enter to activate Yes This will show the profile list at startup System Set El ast 12 53 a
157. y A Microsoft Excel form generating an automated re port and chart is available as free download for all reg istered XL2 customers on the support website at http my nti audio com Enable all macros when opening the document The XL2 reads the electronic data sheet of any connected ASD microphones provided by NTi Audio and switches the 48V phantom power automatically on as follows e Connect the measurement microphone to the XL2 e Switch on the XL2 e Position the XL2 at the measurement location using a micro phone stand or tripod e Select the SLMeter function in the measurement menu and toggle with page to the real time analyzer RTA page nima All wideband and RTA levels are measured and logged simultaneously You select the sound levels to be displayed Sound Level Meter INTi AUDIO The XL2 displays two different sound pressure levels at the same time You configure which test results to display e g L7Fmax 2nd LZFlive e Ensure no other measurement is going on The run indication should display the stop symbol gy e Select the LZF value with the rotary wheel SLHeter alt SLA E e ASt 13 24 S Eng 7 dB 1 3 OCT I Bije 56 6 dE H S Hz 20 HO 250 ik 4k POk Ae ULLO LL o e e i0 RHGE 110 Cinco ence e Confirm with enter 39 INTi Sound Level Meter AUDIO e Select the frequency weighting Z e Select the required time weighting e g LE Fast SLMeter lt LA E
158. y the XL2 sticker on top of the XL2 product name on the display e Download the dedicated firmware V2 52 for ac creditation from the XL2 Support Page of http my nti audio com to your XL2 sound level meter e After the firmware installation the XL2 starts with a pop up window XL2 Type Approved SLM RTA The sound level meter functions SLM RTA are now certified to meet the Class 1 sound level meter requirements In the XL2 these functions are indicated by SLM TA or SLM RTA Type Ap proved 183 INTi Further Information AUDIO NTi Audio 600 000 379 The Cinema Meter Option forms the dedicated solution for efficient calibration and repetitive verification of cinema loudspeaker systems according SMPTE ST 202 2010 and SMPTE RP 200 2012 An interactive assistant guides the user through dedicated measurement procedures Cinema Meter sTEFOO ast 13 31 S Select a task to start a Create new cinema Calibrate cinema Verity cinema a Lock into Verify Mode View verification results Exit 184 e Create new cinema Generates measurement templates according the cinema size with dedicated X curve selection Calibrate cinema Calibration menu for reference data recording of each chan nel as well as headroom tests and averaging measurement results of different microphone positions e Verify Cinema Verification menu for periodical cinema measurements and comparison against the reference data Lock into
159. yzer The microphones are 48 VDC phantom pow ered and include an electronic data sheet The microphone bodies contain a preamplifier and require 48 VDC phantom power supply for operation They combine high dynamic range and wide frequency range with low noise The measurement microphones can also be connected to the XL2 Audio and Acoustic Analyzer using an ASD Cable for mea surements at remote locations or for reduction of acoustic re flections The microphones include an electronic data sheet The Auto mated Sensor Detection ASD of the XL2 Analyzer automati cally reads this data i e the microphone model and calibration data This promotes faster setup and ensures accurate mea surements Microphones INTi AUDIO Screen connection used for ASD technology Microphone XLR M l Pin a3 Microphone Pin 3 a Capsule Pin 1 Shield 1 Connection diagram of measurement microphones with electronic data sheet The XL2 automatically reads the electronic data sheet of the connected microphone as follows e Connect the measurement microphone to the XL2 e Switch on the XL2 175 INTI Microphones AUDIO The NTi Audio measurement microphones can be connected to the XL2 Analyzer using an ASD Cable for measurements at remote locations or for reducing acoustic reflections The elec tronic data sheet is transmitted via the XLR connector s hous ing Do not touch this during the brief initialization period to ensure the complete data

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