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1. Nominal M2230 M2211 M2215 Frequency Microphone Microphone Microphone Hz dB dB dB 50 0 0 0 0 0 0 63 0 0 0 0 0 0 80 0 0 0 0 0 0 100 0 0 0 0 0 0 125 0 0 0 0 0 0 160 0 0 0 0 0 0 200 0 0 0 0 0 0 250 0 0 0 0 0 0 315 0 0 0 0 0 0 400 0 0 0 0 0 0 500 0 0 0 1 0 0 630 0 0 0 1 0 0 800 0 1 0 1 0 0 1000 0 2 0 1 0 0 1250 0 3 0 3 0 0 1600 0 4 0 5 0 1 2000 0 5 0 6 0 2 2500 0 6 0 7 0 6 3150 0 8 1 1 0 7 4000 1 0 1 7 1 2 5000 1 5 2 2 2 1 6300 2 2 3 3 3 0 3000 3 3 4 2 3 9 10000 4 6 5 4 3 7 12500 6 5 73 6 7 16000 8 0 9 2 9 0 20000 9 0 11 0 10 6 Specifications INTi AUDIO Nominal M2230 Frequency Microphone Hz dB 50 0 0 63 0 0 80 0 0 100 0 0 125 0 0 160 0 0 200 0 0 250 0 0 315 0 0 400 0 0 500 0 0 630 0 0 800 0 1 1000 0 1 1250 0 1 1600 0 2 2000 0 4 2500 0 5 3150 0 5 4000 1 1 5000 1 7 6300 1 9 8000 2 6 10000 3 3 12500 4 8 16000 6 1 20000 8 9 219 INTi AUDIO Microphone PreAmplitier Frequency Range Residual Noise Floor typical Frequency Response Flatness Phase Linearity Maximum Output Voltage Electronic Data Sheet Impedance Power Supply Attenuation Connector Thread for Capsule Weight Dimensions Temperature Range Humidity NTi Audio Specifications MA220 PreAmplifier Compatible with 1 2 microphone capsules type WS2F in accordance with IEC61094 4 4 Hz 100 kHz 1 6 uV A at C_in 18pF 12 dBA 20 mV Pa 0 2 dB
2. o Appendix INTI AUDIO Nomi Actual Angle in Degrees nal Fre Frequen quency cy Hz 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 Hz 5000 5011 87 1 54 1 54 1 97 2 36 2 08 1 67 1 68 2 07 2 18 1 95 1 68 1 64 2 04 2 00 1 93 1 63 1 64 1 37 1 24 5300 5308 84 1 97 1 84 1 95 2 45 2 54 2 13 1 97 2 36 2 54 2 17 1 83 1 93 2 27 2 18 2 22 1 86 1 93 1 71 1 57 5600 5623 41 1 90 1 97 1 84 2 19 2 63 2 35 1 91 2 14 2 42 2 20 1 96 2 06 2 26 2 20 2 25 1 83 1 86 1 63 1 50 6000 5956 62 1 98 2 40 2 27 2 24 2 80 2 94 2 34 2 24 2 58 2 60 2 33 2 27 2 25 2 50 2 48 2 11 2 03 1 76 1 57 6300 6309 57 1 97 2 41 2 66 2 33 2 52 3 10 2 82 2 54 2 81 2 94 2 57 2 33 2 46 2 86 2 80 2 41 2 36 2 16 1 95 6700 6683 44 2 28 2 33 2 93 3 03 2 93 3 43 3 27 2 75 2 94 3 25 2 84 2 45 2 69 3 26 3 09 2 84 2 68 2 44 2 21 7100 7079 46 2 70 2 53 2 80 3 16 2 90 3 24 3 69 3 21 3 11 3 53 3 16 2 69 2 90 3 27 3 15 2 90 2 66 2 49 2 22 7500 7498 94 3 25 3 15 3 03 3 66 3 59 3 61 4 21 3 73 3 25 3 83 3 91 3 34 3 41 3 62 3 67 3 40 3 14
3. F 1 5 1 5 m m E O Malar iil 0 0 0 0 z x r z 63 125 250 500 ik 2k Yk Gk 63 125 250 500 ik ek ARG BG Iiii AVPG AS a0 RAGE 150 STAT STOP a0 HGE 150 STAT STOP Reverberation Time RI60 INTi AUDIO Various error indications are displayed for unsuccessful RT60 measurements Corrupt 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
4. e Press enter to toggle between All and Selected By setting Selected at 5 up to 10 individual log values can be chosen e Select the first value Lxx with the rotary wheel and press enter e Select the logging level with the rotary wheel 3 and con firm with enter At 100ms Logging is the log value selection limited to five different parameters 47 INTi Sound Level Meter AUDIO The XL2 TA 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 wav file is started automatically after 12 hours of recording typical maximum wav file size 512 MByte Compressed AGC compressed with automated gain con trol The gain control increases the level of low level signals so that the wav file is well leveled during playback on the PC 24Bit_48kHz linear wav file logging in 24 bit 48kHz resolu tion with the optional Extended Acoustic Pack A new wav file is started automatically after 1 hour of recording typical maximum wav file size 512 MByte The XL2 TA stores date and time of the record ing within the wav file according to EBU TECH 3285 This information is available through professional audio video tools typically used in broadcast 48 Sample name of wav tile MyTest_SLM_000_Audio_FS133 0dB PK _00 wav File name defined by user Measurement function Automatically incrementing file number
5. Eaa dE i3 OCT il Boa 56 dE To SHBH2 20 HO 250 ik 4k POk Ae LLULL il RHGE 140 E SET cnt OO 00 00 e Confirm with enter Sound Level Meter INTi AUDIO e Select the frequency weighting Z e Select the required time weighting e g LE Fast SLHeter lt LA E 4 Ast 13 24 S LZF FRED WEIGHTING OCT eee ee ee eee ee m L2F A C ee xt SLMeter Mm SCAL 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 E E HE a are LLULLU g Eli 10 ANGE 110 cit go oann e Confirm with enter Press start PE to measure and display the Confirm with enter sound levels results indicated with 41 INTi Sound Level Meter AUDIO e Select the parameter shown to the right of the upper LZF Select the lowest possible input range according to the maxi value with the rotary wheel e g max mum level expected during the measurement Wrong Input e Press enter ranges are indicated by a lt in front of the measurement val ue or a flashing 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 e Select the parameter max confirm with enter SLHeter lt LA E lt asp 13 24 S L F mos FARAHETER CT me LF live Liwe ma IHz 7 The numeric result pa
6. lt 1 20 Hz 20 kHz 21 Vpp 74Vrms 145 dBSPL 20 mV Pa THD 3 1 kHz e Containing user calibration data e Default factory sensitivity 4 9 V Pa e Read write by XL2 TA Audio and Acoustic Analyzer e NTi Audio ASD in accordance with IEEE P1451 4 V1 0 Class 2 Template 27 Input 20 GOhm 0 26 pF Output 100 Ohm balanced 48 VDC phantom power 3 mA typical lt 0 17 dB Rphantom 2x 6 8 kOhm Balanced 3 pole XLR 60 UNS2 90 g 3 17 oz Length 142 5 mm 5 6 diameter 20 5 mm 0 8 10 C to 50 C 14 F to 122 F 5 to 90 RH non condensing 600 040 040 The product specifications may vary based on the mounted microphone capsule type 220 Sound Level Meter Frequency Weighting Sound Level Meter Time weighting Sound Level Meter Correction Standard Features ALE jz LF ILS Specifications INTI AUDIO Optional e Extended Acoustic Pack I Impulse E Sound Exposure Level Percentile Sound Pressure Levels for wide band 1 1 and 1 3 octave spectrum with flexible setting from 1 99 221 INTi AUDIO Sound Level Meter Parameter Sound Level Meter RTA Spectrum Analyzer Sound Level Meter Audio Recording Sound Level Meter Triggered Event Recording 222 Appendix Standard Features Optional e Extended Acoustic Pack liwe Prev Clock Impulse Maximum Level Taktmaximalpegel in ac cordance with DIN 45645 1 Calculated levels in accordance with DIN 45645
7. 0 02 0 01 1180 1188 50 0 03 0 02 0 05 0 04 0 08 0 09 0 08 0 10 0 10 0 12 0 11 0 07 0 07 0 06 0 06 1250 1258 93 0 06 0 05 0 09 0 07 0 14 0 14 0 15 0 16 0 17 0 21 0 20 0 16 0 16 0 13 0 14 1320 1333 52 0 09 0 07 0 12 0 10 0 18 0 17 0 21 0 23 0 24 0 29 0 27 0 26 0 26 0 24 0 22 1400 1412 54 0 07 0 04 0 09 0 07 0 13 0 12 0 18 0 21 0 24 0 29 0 27 0 29 0 28 0 31 0 26 1500 1496 24 0 01 0 00 0 03 0 02 0 06 0 06 0 11 0 14 0 18 0 23 0 26 0 27 0 27 0 32 0 27 1600 1584 89 0 00 0 02 0 00 0 01 0 01 0 02 0 06 0 09 0 12 0 17 0 23 0 26 0 28 0 30 0 29 1700 1678 80 0 00 0 04 0 01 0 05 0 04 0 05 0 03 0 00 0 03 0 07 0 12 0 17 0 26 0 25 0 26 1800 1778 28 0 01 0 04 0 02 0 04 0 04 0 06 0 07 0 09 0 06 0 00 0 05 0 06 0 18 0 22 0 22 1900 1883 65 0 01 0 01 0 01 0 04 0 03 0 05 0 05 0 09 0 13 0 08 0 02 0 00 0 08 0 17 0 23 2000 1995 26 0 03 0 03 0 05 0 05 0 08 0 04 0 00 0 02 0 06 0 04 0 07 0 01 0 08 0 12 0 25 2120 2113 49 0 05 0 05 0 10 0 13 0 18 0 22 0 18 0 19 0 10 0 14 0 06 0 01 0 17 0 19 0 27 2240 2238 72 0 00 0 02 0 01 0 06 0 08 0 16 0 21
8. 0 25 0 31 0 36 0 44 0 37 0 34 0 32 0 26 0 26 0 33 0 39 2360 2371 37 0 00 0 02 0 00 0 03 0 03 0 10 0 13 0 22 0 30 0 39 0 46 0 51 0 56 0 47 0 42 0 40 0 33 0 47 2500 2511 89 0 00 0 01 0 00 0 03 0 03 0 08 0 08 0 11 0 16 0 29 0 44 0 48 0 58 0 64 0 52 0 50 0 45 0 41 2650 2660 73 0 00 0 00 0 01 0 05 0 02 0 03 0 01 0 01 0 06 0 09 0 21 0 34 0 49 0 55 0 62 0 54 0 48 0 42 2800 2818 38 0 00 0 01 0 01 0 03 0 03 0 09 0 10 0 08 0 07 0 09 0 16 0 18 0 36 0 51 0 58 0 70 0 57 0 55 3000 2985 38 0 00 0 00 0 03 0 09 0 12 0 19 0 20 0 25 0 31 0 31 0 30 0 34 0 43 0 52 0 70 0 79 0 84 0 73 3150 3162 28 0 00 0 01 0 00 0 06 0 06 0 13 0 18 0 30 0 36 0 42 0 49 0 47 0 51 0 62 0 70 0 92 0 95 0 97 3350 3349 65 0 00 0 01 0 01 0 00 0 01 0 06 0 09 0 15 0 23 0 37 0 46 0 46 0 55 0 55 0 67 0 82 1 05 1 01 258 Appendix INTi AUDIO Nomi Actual Angle in Degrees nal Fre Frequen quency cy Hz 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
9. 3 03 2 78 8000 7943 28 4 03 3 74 3 41 3 38 3 11 8500 8413 95 4 28 4 03 3 57 3 59 3 25 9000 8912 51 4 97 4 73 4 11 4 21 3 86 9500 9440 61 5 29 5 01 4 21 4 25 3 94 10000 10000 00 5 96 5 78 4 92 4 99 4 66 10600 10592 50 6 38 6 32 5 56 5 62 5 33 11200 11220 20 6 19 6 46 5 65 5 71 5 42 11800 11885 00 6 89 728 6 63 6 49 6 22 12500 12589 30 743 8 07 742 711 6 92 13200 13335 20 7 48 8 50 789 743 736 14000 14125 40 8 18 9 45 8 78 8 17 8 20 15000 14962 40 8 85 10 27 9 43 8 58 8 69 16000 15848 90 9 98 11 23 10 39 9 57 9 70 17000 16788 00 10 22 11 69 11 46 10 42 10 51 18000 17782 80 10 91 12 08 12 48 11 15 11 39 19000 18836 50 10 50 11 05 11 74 12 45 12 44 12 86 13 22 13 33 12 90 13 90 13 76 13 71 13 09 13 30 12 01 12 61 13 63 12 05 12 01 20000 19952 60 11 34 11 75 12 63 13 00 13 60 13 92 14 22 14 21 14 52 14 27 15 01 1 14 99 13 71 14 36 12 72 13 38 15 20 13 07 12 92 The maximum measurement uncertainty of the data is with 95 e 250 Hz to 1 kHz 1 kHz to 4 kHz 4 kHz to 8 kHz 8 kHz to 12 5 kHz 0 3 dB 0 5 dB 1 0 dB 15 cB probability k 2 261 INTi Appendix AUDIO The following acoustic measurements hav
10. Contact Nii 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 United Kingdom 44 1438 870632 uk nti audio com www nti audio com CN NTi Audio is an ISO 9001 2008 a Net m A STY certified company Firmware V2 71 Version 2 71 01 3 April 2014 All information subject to change without notice All rights reserved Minirator is a registered trademark of NTi Audio TM XL2 TA EXEL M2230 M2211 M2215 M4260 and MA220 are trademarks of NTi Audio Made in Switzerland Table of Contents INTI AUDIO Table of Contents 1 Introduction soci Faicsicctencaindvecrdntcseidenadntendeatndssncdnnuieincacvsdsennt 5 5 Acoustic Analy Zer ccccccceceseeescseeeusueeeneueeeeeaeeenseeenaees 64 FFT Analysis TOIGranCe ccccccccc cece neceeeeeeeeeeeeeeenns 64 2 Overview EA EO A A E E N OA A EEE A 7 Reverberation Time RT60 74 De OA E E NE T 9 A SFr DSO aadorssecs ccs icarnsecnccraedesesaomaseecceseen 11 Polarity O EEN E O E E 86 Delay TMG ersi ir a a T 90 3 Getting Started ccccccesccesseeeeseeeeeeeseeeseeeseeeesseneees 14 1 12 Octave Tolerance Optional cccecceeeeceeees 96 Power UO ccert a Sec eE Ee E ai 14 Noise Curves Optional ccccccccssecc
11. ment period of 1 5 seconds not mandatory 156 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 a Auto power off 16 Min Backlight Auto n Dimmed Date 2112 87 25 Ge igeia 5 Action at power on Show profile list Ho Fhonton power Remember Time 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 157 INTi System Settings AUDIO 4 5 Toggle the backlight with the power backlight button The XL2 TA includes a real time clock All measurements The backlight offers three different conditions are 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
12. A report saves the conducted measurements onto the installed SD Card The XL2 TA Supports setting the individual levels to All All RTA levels are stored in the report be stored in the report after the measurement is completed 2 SLHeter Ree LR Gf ast 43 24 a Choose between the following result reporting Report Setting ALL Records all available sound pressure levels 1 Add Spectra All without correction values Selected Records a subset of up to 10 different levels 2 Report Volues Selected including correction values If you require 3 0 LAeg a 1 LPR ae E e Select Report Values with the rotary wheel a 1 e Press enter to toggle between All or Selected J i 4 q 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 No No RTA measurement reporting e Select the reporting level with the rotary wheel and Leq The RTA Leq level is stored in the report confirm with enter 45 INTi Sound Level Meter AUDIO The XL2 TA features a powerful sound level meter data log ger which allows you to record all required sound level values during 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 detailed setup of the log report Seva Lod LA E i ast 10 55 g 1
13. 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 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 119 INTi 120 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 ratio mri and mr2 All indexes together combined with psycho acoustic mo
14. Select Live and confirm with enter IHE as Li 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 Select Ref and confirm with enter Set the Yaxis accordingly to show the zero line INTi AUDIO 147 INTi Capture Tolerances AUDIO e Select the Capture amp Start Tolerance Mode symbol with the rotary wheel ifl2 Oct LA Bi ast 13 51 S EQ 94 3dB 1 12 OCT i iz Oct LR Gl ast i243 a Live a7 8dB 2 180kHz ee dB 1 12 OCT als Liwe Ret 28 0 dEr 2 38A KHz 40 eo l T 16 E 250 Lik UL 16k Z an mn SET iE E63 250 ik 4k iBkAZ uo BAe do Teds Mean Mn get aeeeenae ao ANGE 140 C815 MO cnrageagses e Confirm with enter All levels differences relative levels are dis played in the unit dBr 148 i iz Oct sA 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 Tolerances 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 Co
15. 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 TA 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 TA off prior opening the bat tery cover in order to prevent any electronic discharges 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 TA 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 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 TA on a flat surface Connect an NTi Audio measurement microphone to the XLR input connector of the XL2 TA Getting Starte
16. ity low capacitance standard professional audio cable The mi crophone sensitivity has to be entered manually into the XL2 TA Analyzer Alternatively connect the microphone first directly to the An alyzer The XL2 TA reads the sensitivity and remembers this value Afterwards connect the audio cable e 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 e Do not jar or drop the microphone e 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 189 INTi Further Information 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 You are prompted to login or create your My NTi Audio e Free updates for your instruments account e Activation of optional product functions e The web page My NTi Audio Products opens e Premium access to downloads e Select the product type and enter the serial number e Receive application and product news e Confirm with Register e Faster worldwide support e Now your product is listed in the table My Products e Tracing support in case of loss or theft e Calibration support 190 e Resetting to Factory Default e XL2 TA Starts Up with Limited Functi
17. 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 have such an acoustic character Level dB A WAWAN NN a 5 dB 20 dB level range to obtain the reverbera distance to tion time noise floor 25 dB I h NaN AA 4 h 35 dB y i eH Time RTBA AUK LA E 4 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 RI60 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 m
18. 0 04 dB kPa 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 383 g 2 93 oz 600 040 050 600 040 022 600 040 045 600 040 025 215 INTi Specifications AUDIO Typical Frequency Response of Measurement Microphones M2230 M2211 M4260 M2210 M2215 Tolerance 6 Class 1 IEC61672 1 Sensitivity relative dB Tolerance Class 2 IEC61672 1 5 10 20 100 1000 10000 20000 log frequency Hz free field conditions reference direction 0 216 Specifications INTI AUDIO Linear Measurement Range XL2 TA M2230 24 dB A 138 dB acc IEC61672 ANSI 1 4 typ microphone sensitivity Level 27 dB 17 dB 2 Pi 1 1 s 2 s 1 ri s 1 L 2 2 1 1 i 17 dB 27 dB Input Level XL2 TA M2211 29 dB A 144 dB XL2 TA M4260 35 dB A 144 dB Level kavai 1 41 dB j L 49dB L b XL24 i 31 dB M2211 39 dB XL2 Ideal A 21dB 29 dB a a a ee ee ee ee ee ee ee ee ee S E E 21 dB 31 dB 41dB Input Level 29 dB 39 dB 49 dB Input Level 217 INTi 218 AUDIO Specifications
19. 0 60 0 60 3150 3162 28 0 84 0 85 0 88 1 10 1 15 1 10 1 01 0 79 0 88 0 85 1 12 1 02 1 20 1 06 0 95 1 02 0 93 0 75 0 69 3350 3349 65 1 00 0 80 0 90 1 05 1 16 1 29 1 03 0 91 0 87 0 87 1 07 1 04 1 20 1 11 0 95 0 99 0 91 0 71 0 65 3550 3548 13 0 97 0 92 0 78 0 80 1 12 1 20 1 09 0 99 0 78 0 84 0 91 0 99 1 10 1 07 0 81 0 84 0 81 0 62 0 57 3750 3758 37 1 25 1 10 0 88 0 94 0 98 1 24 1 31 1 10 0 86 0 93 0 92 1 11 1 13 1 16 0 87 0 85 0 86 0 68 0 66 4000 3981 07 1 33 1 47 1 39 1 06 1 10 1 49 1 52 1 35 1 19 1 14 1 11 1 38 1 33 1 43 1 12 1 03 1 09 0 93 0 90 4250 4216 97 1 42 1 71 1 57 1 34 1 34 1 48 1 61 1 69 1 47 1 25 1 29 1 49 1 45 1 60 1 29 1 18 1 23 1 07 1 02 4500 4466 84 1 09 1 47 1 81 1 62 1 20 1 25 1 63 1 82 1 47 1 20 1 31 1 39 1 45 1 60 1 35 1 14 1 19 1 00 0 94 4750 4731 51 1 19 1 42 1 77 1 77 1 45 1 43 1 66 1 76 1 56 1 43 1 41 1 30 1 62 1 66 1 50 1 19 1 23 1 03 0 92 260
20. 108 to 68 to 78 Hz starting 94 starting 94 starting 94 starting 94 starting 104 31 5 from 31 from 32 from 35 from 31 from 41 to 86 to 123 to 126 to 86 to 96 from 24 from 27 from 30 from 24 from 34 from 41 Hz starting 114 starting 114 starting 114 starting 114 starting 124 1 kHz to 108 to 108 to 108 to 108 to 118 to 111 starting 94 starting 94 starting 94 starting 94 starting 104 from 31 from 32 from 35 from 31 from 41 from 38 1 kHz to 126 to 126 to 126 to 126 to 136 to 129 from 24 from 27 from 30 from 24 from 34 starting 114 starting 114 starting 114 starting 114 starting 124 4 kHz ito 109 to 107 to 108 to 109 to 119 starting 94 starting 94 starting 94 starting 94 starting 104 from 31 from 32 from 35 from 31 from 41 4 kHz ito 127 to 125 to 126 to 127 to 137 from 24 from 27 from 30 from 24 from 34 starting 114 starting 114 starting 114 starting 114 starting 124 8 kHz to 107 to 105 to 108 to 107 to 117 starting 94 starting 94 starting 94 starting 94 starting 104 from 31 from 32 from 35 from 31 from 41 8 kHz to 125 to 123 to 126 to 125 to 135 from 24 from 27 from 30 from 24A from 34 starting 114 starting 114 starting 114 starting 114 starting 124 12 5 to 104 to 102 to 108 to 104 to 114 KHz starting 94 starting 94 starting 94 starting 94 starting 104 12 5 from 31 from 32 from 35 from 31 from 41 to 122 to 120 to 126 to 122 to 132 kHz starting 114 starting 114 starting 114
21. 2 97 3 70 4 54 5 21 6 21 704 780 8 59 9 59 10 28 259 INT Appendix AUDIO Nomi Actual Angle in Degrees nal Fre Frequen quency cy Hz 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 Hz 250 251 19 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 315 316 23 0 01 0 01 0 01 0 00 0 01 0 01 0 00 0 00 0 01 0 00 0 01 0 02 0 00 0 02 0 00 0 00 0 01 0 03 0 03 400 398 11 0 00 0 01 0 03 0 02 0 00 0 04 0 01 0 02 0 00 0 01 0 01 0 03 0 00 0 01 0 02 0 02 0 01 0 00 0 01 500 501 19 0 06 0 05 0 09 0 08 0 04 0 09 0 05 0 07 0 03 0 05 0 03 0 00 0 03 0 04 0 00 0 01 0 01 0 01 0 04 630 630 96 0 13 0 06 0 17 0 10 0 08 0 17 0 14 0 12 0 08 0 09 0 05 0 08 0 10 0 11 0 09 0 12 0 13 0 09 0 22 800 794 33 0 04 0 04 0 08 0 08 0 09 0 09 0 07 0 09 0 05 0 05 0 03 0 04 0 07 0 06 0 05 0 03 0 03 0 00 0 06 1000 1000 00 0 03 0 02 0 06 0 09 0 06 0 09 0 06 0 10 0 09 0 10 0 07 0 04 0 0
22. 2b Appendix Nomi Actual Angle in Degrees nal Fre Frequen quency cy Hz 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 Hz 250 251 19 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 315 316 23 0 00 0 01 0 01 0 00 0 02 0 01 0 01 0 01 0 01 0 01 0 01 0 01 0 01 0 00 0 01 0 01 0 00 0 01 400 398 11 0 00 0 01 0 01 0 00 0 02 0 02 0 01 0 00 0 00 0 00 0 01 0 01 0 02 0 01 0 00 0 02 0 00 0 00 500 501 19 0 00 0 02 0 02 0 01 0 00 0 02 0 02 0 01 0 03 0 04 0 04 0 04 0 05 0 05 0 02 0 04 0 04 0 04 630 630 96 0 00 0 09 0 11 0 06 0 04 0 00 0 01 0 05 0 05 0 06 0 11 0 11 0 13 0 08 0 07 0 10 0 11 0 13 800 794 33 0 02 0 00 0 00 0 02 0 00 0 00 0 00 0 03 0 00 0 01 0 01 0 02 0 01 0 03 0 04 1000 1000 00 0 02 0 03 0 02 0 00 0 01 0 00 0 01 0 01 0 03 0 00 0 01 0 04 0 01 0 02 0 03 1060 1059 25 0 02 0 02 0 03 0 01 0 03 0 03 0 03 0 04 0 00 0 02 0 02 0 02 0 01 0 00 0 02 1120 1122 02 0 02 0 00 0 04 0 02 0 05 0 06 0 06 0 06 0 05 0 06 0 05 0 01 0 03
23. 3 73 4 36 4 54 11800 11885 00 0 05 0 28 0 82 1 17 1 21 1 45 2 04 2 28 2 65 3 25 3 53 4 03 4 56 5 04 5 54 12500 12589 30 0 54 0 87 1 05 0 98 1 31 1 90 2 08 2 56 3 15 3 36 3 98 4 44 4 86 5 42 5 75 13200 13335 20 0 00 0 02 0 13 0 24 0 27 0 44 0 77 1 35 1 48 1 92 2 49 2 74 3 46 3 76 4 40 4 85 5 54 5 99 14000 14125 40 0 00 0 00 0 08 0 20 0 42 0 85 1 20 1 47 1 81 2 35 2 64 3 39 3 63 4 44 4 84 5 51 6 06 6 53 15000 14962 40 0 00 0 01 0 11 0 29 0 54 0 92 1 15 1 59 2 04 2 32 3 03 3 42 4 20 4 53 5 20 5 80 6 52 6 78 16000 15848 90 0 00 0 03 0 13 0 37 0 71 1 08 1 25 1 79 2 16 2 70 3 27 3 73 4 49 5 07 5 65 6 31 711 772 17000 16788 00 0 00 0 00 0 14 0 36 0 63 0 97 1 30 1 94 2 24 2 92 3 39 4 12 4 75 5 44 6 07 6 66 759 8 07 18000 17782 80 0 00 0 05 0 25 0 48 0 71 1 06 1 54 2 14 2 40 3 27 3 67 4 52 5 26 5 88 6 58 738 8 19 8 93 19000 18836 50 0 00 0 03 0 25 0 54 0 75 1 13 1 71 2 25 2 67 3 51 4 10 4 84 5 69 6 48 712 794 8 95 9 48 20000 19952 60 0 00 0 04 0 25 0 55 0 85 1 28 1 80 2 42
24. 40 sec after 100 seconds the XL2 TA has to be syn chronized to the delay test signal again Minirator The Minirator MR PRO and MR2 provides a more reliable test signal source than a CD player Therefore the XL2 TA offers an ex tended time range without synchronization Only after 300 seconds 5 minutes does the XL2 TA have to be synchronized to the delay test signal again Press the store button to record the actual delay 7 of the reference speaker Individually stored delay time of reference speaker 4 Calculated Distance Distance from measurement position to speaker in meters or feet based on the defined temperature in C or F Synchronization Time Bar 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 TA uses the internal VoiceNote micro
25. 80 85 Hz 3550 3548 13 0 00 0 02 0 02 0 01 0 00 0 03 0 01 0 00 0 07 0 18 0 29 0 40 0 47 0 50 0 48 0 65 0 84 1 08 3750 3758 37 0 00 0 01 0 01 0 07 0 08 0 12 0 09 0 09 0 10 0 11 0 22 0 35 0 49 0 62 0 54 0 60 0 78 0 98 4000 3981 07 0 00 0 01 0 02 0 10 0 16 0 24 0 30 0 36 0 39 0 35 0 38 0 41 0 62 0 76 0 86 0 83 0 87 1 11 4250 4216 97 0 00 0 00 0 02 0 07 0 09 0 18 0 25 0 40 0 50 0 54 0 60 0 52 0 64 0 77 0 93 1 10 1 01 1 01 4500 4466 84 0 00 0 02 0 01 0 03 0 02 0 06 0 07 0 18 0 27 0 42 0 57 0 58 0 56 0 66 0 77 1 00 1 12 1 05 4750 4731 51 0 00 0 01 0 02 0 08 0 10 0 17 0 14 0 18 0 19 0 32 0 47 0 66 0 70 0 71 0 73 0 94 1 16 1 18 5000 5011 87 0 00 0 00 0 05 0 14 0 20 0 35 0 44 0 54 0 53 0 60 0 63 0 82 1 01 1 12 1 09 1 15 1 41 1 62 5300 5308 84 0 00 0 02 0 01 0 07 0 10 0 26 0 39 0 58 0 71 0 85 0 87 0 90 1 07 1 30 1 40 1 36 1 43 1 76 5600 5623 41 0 04 0 04 0 10 0 15 0 29 0 45 0 71 0 88 0 94 1 01 1 16 1 39 1 51 1 44 1 54 6000 5956 62 0 12 0 17 0 24 0 27 0 32 0 38 0 57 0 80 1 03 1 2
26. 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 For wav file recording over longer periods the XL2 TA splits the audio data Into individual wav files with about 500 MB 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 tile 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 TA 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 the predominan
27. Charging Time approx 6 hours Adapter Leave the battery inside and switch off optional the XL2 TA for charging NTi Audio 600 000 333 USB Power Charging Time approx 6 hours from PC Switch off the XL2 TA for faster charging Operation using Mains Power Supply You can also operate the XL2 TA with mains power using the NTI 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 edge first e Close the battery cover Switch off the XL2 TA for faster recharging by mains power adapter or USB connection Switch the XL2 TA off prior opening the bat tery cover in order to prevent any electronic discharges Avoid short circuits Operate and charge the battery between 0 C
28. RMS THD N Oscilloscope 1 12 Oct Tol Noise Curves STIPA Cinema Meter Calibrate Profile System 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 Noise Curves 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 INTi 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 Manage
29. Start the delay test signal at soeaker B Mute speaker A wheel amp and press enter e Position yourself with the XL2 TA at the shown measure ment position The XL2 TA uses the VoiceNote microphone for the delay test do not connect any measurement micro phone e Stop the delay test signal at speaker A 13 45 a Delay Signal a a all Minirater Deloy LA A 13 45 S Act Delas ik 9 oms Delay Signal be 1 Source Minirater A S ms Act RI ms a 6 0 5 ms Distance 28 C Z3 2m 4 bA ims Act Ums UVQQQQQUUOUUNNNQQUUONUONQQQUUOOUUONQQQUUONNNNQQUUUU0II 00 00 Measure Distance ZAP LO m UVQNQQQUUUUUNNNQQUUOONUONQQQUOOUUNNQQUUOONNSQQUUUOOONNQQQUUUOONNSNQUUTL 00 00 Hegzure 05 00 94 Delay Time INTI AUDIO Automated Difference Calculation Result Interpretation e The delay time difference between speaker A and B is e The resulting time in milliseconds shows automatically calculated and shown below the Act Delay the time difference of the sound signal from result speaker A and B arriving at the measurement position Speaker B has to be delayed by the displayed difference result The delay time is measured To optimize directionality add a further 5 ms to the calculated difference The main signal from speaker 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 Delay Tes
30. a mli crophone 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 Bod 123 LA Gi aso 15 47 S ed4 4 OT 121 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 122 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 or select Screen shot to store the screenshot STIPA INTI AUDIO The standard IEC 60
31. 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 175 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 176 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 me
32. calibrator The reference calibration level is 114 dB The XL2 TA Sup ports a level setting between O dB and 200 dB L7F Default setting LHP100F Suppressing any low frequency noise for example wind during outdoor calibrations Read out data from the connected microphone 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 INTi AUDIO Calibration shows up and changes to Calibration Successfully fin ished for a successfully completed calibration In case no external 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 The XL2 TA writes the usersensitivity setting onto the electronic data sheet of the connected NTi Audio measurement microphone or micro phone preamplifier All subse
33. e he XL2 IA measures the selected sound pres sure levels Live and EQ All available sound levels are Z weighted no weighting e Press start Dm Pakia SLE d Asb 44 30 g Ef T1 dE 1 12 OCT ae Live UPd 2 reAkHz 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 amp and confirm with enter 1 12 Oct ASD 11 30 S FO FOLDER MEH DIR Ee HFroject HomingtSoyving manual Save Test Soave Screenshot Load Test Hiire 18420 MByte 40 ib E 250 ik ik ae SET CHT eS o RNGE 40 T8 15 W e Press enter to store the test results 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 TA 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 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 resolutio
34. e Measure the moving Leq 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 Appendix I INTi AUDIO 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 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 231 INTi AUDIO Live 232 Appendix Actual current sound pressure level Maximum sound level of the measurement cycle Minimum sound level of
35. 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 TA or load captures from SD Card for import to the XL2 TA 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 Displays the actual and averaged measurement result
36. 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 The data logging is continued in the function SLMe ter RTA during the pause period and listed in the log file 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 TA 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 TA shows 2 9 VY IOL e Q four lines in case of no previous measurement period is ap ae a E E A plicable RAA 123 SLA ase 13 24 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 500ms LAeq 48 6 dB e Graphs and spectra Updated every 50ms TRE 0 AdB TILLITI p SET a0 HGE 150 cil ee The display is updated continuously during measurement INTi AUDIO Overview Individual level measurement results SLMeter RTA FFT Tol RT60 Polarity Delay Time
37. 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 TA allows setting of the level offset independently of the tolerance file Capture Tolerances INTi AUDIO Hide This parameter defines which tolerance fre FreqScale Defines the frequency scale spacing in the X UnusedBands quency range is shown not mandatory Spacing axis for the tolerance data not mandatory True Measurement results of fre lin Tolerance data displayed with quency bands without any linear frequency spacing e g specified tolerance are not dis used in t
38. 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 133 INT Audio Analyzer 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 LP E 13 45 S FREH 1 060533 kHz RUHHIHG emi Lr ea mE The scope scaling is fixed 134 The XL2 TA Audio and Acoustic Analyzer meets or exceeds the In order to maintain the high accuracy annual calibration of the XL2 TA 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 measurement microphones and the micro phone pre amplifier MA220 include an electronic data sheet The Automated Sensor Detection ASD of the XL2 TA recog nizes the sensitivity and calibration data of the connected mi crophone The electronic data sheet including the microphone sensitivity is displayed in the menu Calibrte INTi AUDIO Calibr
39. or other standard documents e EMC 2004 108 EG e Harmonized standards EN 61326 1 e Explosive atmospheres ATEX 94 9 EG 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 Director 206 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 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 TA 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 TA with M2230 microphone Class 1 In accordance with IEC 61672 Type 1 in accordance with ANSI 1 4 e XL2 TA 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 pre vents possible acoustic reflections from the XL2 TA ho
40. phantom power supply to the connection microphone or sen Sor ASD An NTi Audio measurement microphone with automated sensor detection ASD is con nected The XL2 TA reads the electronic data sheet of the microphone and switches the 48V phantom power automatically on Phantom power is switched off 13 Select the measurement unit as follows dB dBu dBV Sound level in dBSPL This measurement unit is permanently selected upon connecting a NTi Audio measurement mi crophone with electronic data sheet Input level in dBu Input level in dBV Input level in Volt FFT Analysis Tolerance 20k 1k7 200 Usr Set INTi AUDIO 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 User Range 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 69 INTi FFT Analys
41. 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 Positive 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 directional ity of the signal source The XL2 TA 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 TA 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
42. set the applicable input range and Press start gt m confirm with enter FFT Tollikr LA Gl lt asp 13 24 S Ef 7 06 tla Live YS AdE 69 719Hz JARAG lir LR ET ast 13 24 S T EQ 103 5 dE O limits 120 th Live 11 4dE 58 000Hz a iii 40 SB 00 Hz c 1 1kH3 1 12 kHz T SET 40 gaai Teds 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 TA 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 J ASD 13 24 e Captures multiple traces in the internal memory _ EQ FOLDER MEH DIR e Comparing measurement results against captured traces t Live with relative or absolute curve display iant Homing Soving manual e Comprehensive tolerance handling Se Test e Creating tolerance masks based on captured reference ii TE i ee St a curves for passed failed measurements aO l nee 174 7 MBytes 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 40 cy range 5
43. starting 114 starting 124 If the sensitivity Sx deviates from the given data a correction value of 20 log Sref Sx has to be added Example Sx 45 mV Pa gt correction value 20 log 42 45 0 6 dB 248 Appendix INT AUDIO in accordance with IEC 61260 All values refer to Sref 42 mV Pa Nominal Level Range esa LOW MID HIGH Z 20 24 106 dB 24 125 dB 40 134 dB 31 5 24 106 dB 24 125 dB 40 134 dB Frequency t 10s 125 24 106 dB 24 125 dB 40 134 dB 315 from 53 from 51 From 56 from 53 from 63 250 24 106 dB 24 125 dB 40 134 dB fto 98 ito 135 to 138 to 98 to 108 Hz starting 114 starting 114 starting 114 starting 114 starting 124 500 24 106 dB 24 125 dB 40 134 dB from 53 from 51 from 56 from 53 from 63 from 65 1000 24 106 dB 24 125 dB 40 134 dB 1 kHz to 138 to 138 to 138 to 138 to 148 to 141 starting 114 starting 114 starting 114 starting 114 starting 124 2000 24 106 dB 24 125 dB 40 134 dB from 53 from 51 from 56 from 53 from 63 4000 24 106 dB 24 125 dB 48 134 dB 4 kHz ito 139 to 137 to 138 to 139 to 149 starting 114 starting 114 starting 114 starting 114 starting 124 8000 24 106 dB 24 125 dB 48 134 dB from 53 from 51 from 56 from 53 from 63 16000 24 106 dB 24 125 dB 48 134 dB 8 kHz to 137 to 135 to 138 to 137 to 147 starting 114 starting 114 starting 114 starting 114 starting 124 from 53 from 51lfrom 56lfrom 53 frm 6
44. test signal generated by the MR PRO MR2 or the included NTi Audio Test CD Polarity Noise Curves 1 12 Octave Analysis optional e Checks polarity of speakers and line signals e Positive Negative detection of wideband and individual 1 1 octave 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 CD e Noise Rating NR in accordance with ISO 1996 e Noise Criteria NC in accordance with ANSI S12 2 2008 and 1995 e Room Noise Criteria RNC in accordance with ANSI 12 2 2008 e Room Criteria RC in accordance with ANSI 12 2 1995 e Preferred Noise Criteria in accordance with ASA 1971 e Application range of measurement microphones M2230 down to NC15 M2211 down to NC15 M4260 down to NC27 e Actual level Lea Lmin Lmax e Selectable 1 1 1 3 1 6 and 1 12 octave spectral resolution e Measurement Units Volt dBu dBV and dBSPL 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 Specifications Cinema Meter optional STIPA Speech Intelligibility optional INTi AUDIO e Measurements in 1 3 octave resolution according SMPTE ST 202 2010 and SMPTE RP 200 2012 e An interactive as
45. 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 audio systems with line inputs e STIPA Test CD included 194 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 with flexible set ting from 1 to 99 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 NTi Audio 600 000 375 The Remote Measurement Option allows querying of the XL2 TA measurement data online via the USB interface Thus cus tomers may program their own measurement application on the computer e g for sound level monitoring or automated measurement tasks The supported XL2 TA measurement functions are e Sound level meter and spectrum analyzer SLMeter RTA e Audi
46. the preamplifier MA220 The device provides at one side a contact that corresponds to the center contact of the replaced microphone capsule at the other side a BNC plug for the electrical signals The impedance at the output of the device is 15 pF with a maximum deviation of 1 pF The electrical noise floor is measured by shorting the con tacts of the BNC plug Before the NTI K65 15 can be mount ed to the preamplifier MA220 the microphone capsule must first be detached The nominal sensitivity S of the capsule is S 42 mV Pa Measurements with the NTI K65 15 therefore require that the sensitivity in the calibration menu is manually adjusted to S 42 mV Pa The linear operating ranges according to IEC 61672 have been verified during the type approval procedure 263
47. 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 57 INTi Sound Level Meter 58 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 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 If triggered event recording is enabled the digi tal output 4 OUTA4 is utilized as confirmation fee
48. toggle between 1 1 OCT and 1 3 OCT to set this parameter 31 INTi Sound Level Meter AUDIO 17 Select the measurement unit as follows dB Sound level in dBSPL This measurement unit is permanently selected upon connecting a NTi Audio measurement mi crophone with electronic data sheet dBu Input level in dBu dBV Input level in dBV V Input level in Volt 32 The low indicator for an individual level lt is displayed when e he measured sound pressure level is below the selected linear measurement range In this case the results shown are most likely higher than the actual sound pressure level gt choose the next lower measurement range e The measured sound pressure level is just above the resid ual noise of the connected NTi Audio measurement micro phone which reduces the measurement accuracy gt choose another microphone dedicated for low level measurements Meee et LA OG ast 13 24 g lt 52 1dB LAeq i 52 2 dB LEFKE b4 qE TM SET lt 40 RHGE 240 Ment aae8a 3 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
49. triggered when the 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 53 INTi Sound Level Meter AUDIO 5 The XL2 TA logs audio data as a wav file Choose from the following settings Off Audio logging is off On Audio logging is activated from measurement start to stop Events Only Audio logging of triggered events only For more details read the chapter Wav File Recording 6 Choose from the following audio recording formats Compressed Compressed audio logging Compressed AGC Compressed audio logging with Automated Gain Control AGC 24Bit_48kHz Linear audio logging in 24 bit 48 kHz resolution Required for post processing on the PC with Extended Acoustic Pack 54 If Log Audio 5 is set to Events Only then the duration for the audio recording may be further specified Records a wav file for the whole trig gered event duration Recording whole event Records a wav file for the specified period after the event start is trig gered Stop recording after 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 have o
50. 0 1 26 1 41 1 71 1 77 1 69 6300 6309 57 0 13 0 20 0 36 0 45 0 52 0 59 0 67 0 82 1 11 1 40 1 52 1 56 1 83 2 15 2 05 6700 6683 44 0 09 0 14 0 30 0 46 0 67 0 84 0 88 0 94 1 05 1 41 1 78 1 85 1 87 2 17 2 47 7100 7079 46 0 12 0 15 0 22 0 25 0 37 0 56 0 90 1 12 1 09 1 17 1 52 1 96 2 03 2 00 2 38 7500 7498 94 0 21 0 33 0 58 0 71 0 82 0 84 0 96 1 31 1 66 1 82 1 81 2 11 2 57 2 58 2 68 8000 7943 28 0 09 0 15 0 30 0 50 0 77 1 08 1 26 1 30 1 46 1 91 2 16 2 21 2 55 2 90 3 00 8500 8413 95 0 18 0 25 0 37 0 44 0 54 0 71 1 11 1 52 1 63 1 75 2 09 2 41 2 56 2 89 3 30 9000 8912 51 0 20 0 32 0 61 0 82 1 10 1 22 1 31 1 56 2 04 2 42 2 47 2 78 3 18 3 29 3 76 9500 9440 61 0 23 0 26 0 41 0 46 0 68 0 98 1 38 1 66 1 71 2 12 2 67 2 78 3 08 3 45 3 66 10000 10000 00 0 08 0 16 0 49 0 80 1 13 1 32 1 44 1 72 2 25 2 57 2 74 3 30 3 49 3 95 4 12 10600 10592 50 0 44 0 68 0 93 0 95 1 09 1 43 1 89 2 22 2 35 2 88 3 31 3 50 4 13 4 36 4 64 11200 11220 20 0 13 0 05 0 15 0 48 1 00 1 21 1 38 1 78 2 32 2 55 3 01 3 50
51. 0 00 0 2 0 2 0 1 0 3 0 6 10600 10592 54 0 1 0 1 0 1 0 0 0 6 11200 11220 18 0 3 0 3 0 1 0 2 0 6 11800 11885 02 0 3 0 3 0 0 0 3 0 6 12500 12589 25 0 2 0 2 0 2 0 3 1 0 13200 13335 21 0 4 0 4 0 3 0 7 1 0 14000 14125 38 0 5 0 5 0 5 1 0 1 0 15000 14962 36 0 5 0 5 0 6 1 1 1 0 16000 15848 93 0 1 0 1 0 6 0 8 1 0 17000 16788 04 0 6 0 6 0 6 1 2 1 0 18000 17782 79 0 7 0 7 0 6 1 3 1 0 19000 18836 49 1 1 1 1 0 7 1 8 1 0 20000 19952 62 1 5 1 5 0 9 2 4 1 0 256 J Appendix aNTi AUDIO Nominal Frequency Weighting Frequency dB Hz A C gt 3150 1 2 0 5 0 0 4000 1 0 0 8 0 0 5000 0 5 1 3 0 0 6300 0 1 2 0 0 0 8000 1 1 3 0 0 0 10000 2 5 4 4 0 0 16000 6 6 8 5 0 0 20000 9 3 11 2 0 0 Nominal Frequency Weighting Frequency dB Hz A C 7 10 70 4 14 3 0 0 12 5 63 4 11 2 0 0 16 56 7 8 5 0 0 20 50 5 6 2 0 0 25 44 7 4 4 0 0 31 5 39 4 3 0 0 0 40 34 6 2 0 0 0 50 30 2 1 3 0 0 63 26 2 0 8 0 0 80 22 5 0 5 0 0 100 19 1 0 3 0 0 125 16 1 0 2 0 0 160 13 4 0 1 0 0 200 10 9 0 0 0 0 250 8 6 0 0 0 0 315 6 6 0 0 0 0 400 4 8 0 0 0 0 500 3 2 0 0 0 0 630 1 9 0 0 0 0 800 0 8 0 0 0 0 1000 0 0 0 1250 0 6 0 0 0 0 1600 1 0 0 1 0 0 2000 1 2 0 2 0 0 2500 1 3 0 3 0 0 257 INTi AUDIO Based on the sound incidence angle Refer IEC61672 1 paragraphs 5 3 1 5 3 2 and 9 2
52. 0mV 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 1 0 second as well FAST 125 ms and SLOW 1 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 gt E 99 INTI 1 12 Octave Tolerance A
53. 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 Noise Curves STIPA Standard Features not available function not available function not available function not available Appendix INTI 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 Spectral Limits Option STIPA Option with STIPA functionality 223 INTi Appendix AUDIO Standard Features Querying measurement data online via the USB interface 224 Optional e Remote Measurement Option supporting SLMeter RTA and RMS THD N function You may start up the XL2 TA with individual preset application profiles 01IH15905 5 amp Audio wl SLVY IBGE k SLY IBGE amp Audio k The profile Full mode is the default configuration with all avail able measurement functions enabled Appendix NTI AUDIO The following limits apply at all areas accessible by the v
54. 2 TA Audio and Acoustic Analyzer using an ASD Cable for measurements at remote locations or for reduction of acoustic reflections 188 The microphones include an electronic data sheet The Auto mated Sensor Detection ASD of the XL2 TA Analyzer auto matically reads this data i e the microphone model and cali bration data This promotes faster setup and ensures accurate measurements Screen connection used for ASD technology Microphone XLR M l Pin a Microphone Pin 3 Capsule Pin 1 Shield 1 Connection diagram of measurement microphones with electronic data sheet The XL2 TA automatically reads the electronic data sheet of the connected microphone as follows e Connect the measurement microphone to the XL2 TA e Switch on the XL2 TA The NTi Audio measurement microphones can be connected to the XL2 TA Analyzer using an ASD Cable for measurements at remote locations or for reducing acoustic reflections The electronic data sheet is transmitted via the XLR connector s housing Do not touch this during the brief initialization pe riod to ensure the complete data sheet is recognized by the XL2 TA The automated sensor detection does not disturb any measurements You may join up to 4x ASD Cables together in series The ASD technology supports accurate data communi cation up to a combined cable length of 20 meters 65 feet INTi AUDIO Microphones For distances longer than 20 meter 65 feet use a high qual
55. 268 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 TA Analyzer offers automated averaging of two up to eight STIPA results based on these standard requirements 123 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 AQLOO0 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 124 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 o
56. 3 The sampling rate of the filters is 48 kHz 12 5 to 134 to 132 to 138 to 134 to 144 kHz starting 114 starting 114 starting 114 starting 114 starting 124 If the sensitivity Sx deviates from the given data a correction value of 20 log Sref Sx has to be added Example Sx 45 mV Pa gt correction value 20 log 42 45 0 6 dB 249 INTi in accordance with IEC 61260 All values refer to Sref 42 mV Pa AUDIO Appendix Nominal Level Range a LOW MID HIGH Z 20 24 106 dB 24 125 dB 40 134 dB 25 24 106 dB 24 125 dB 40 134 dB 31 5 24 106 dB 24 125 dB 40 134 dB 40 24 106 dB 24 125 dB 40 134 dB 50 24 106 dB 24 125 dB 40 134 dB 63 24 106 dB 24 125 dB 40 134 dB 80 24 106 dB 24 125 dB 40 134 dB 100 24 106 dB 24 125 dB 40 134 dB 125 24 106 dB 24 125 dB 40 134 dB 160 24 106 dB 24 125 dB 40 134 dB 200 24 106 dB 24 125 dB 40 134 dB 250 24 106 dB 24 125 dB 40 134 dB 315 24 106 dB 24 125 dB 40 134 dB 400 24 106 dB 24 125 dB 40 134 dB 500 24 106 dB 24 125 dB 40 134 dB 630 24 106 dB 24 125 dB 40 134 dB Nominal Level Range H LOW MID HIGH Z 800 24 106 dB 24 125 dB 40 134 dB 1000 24 106 dB 24 125 dB 40 134 dB 1250 24 106 dB 24 125 dB 40 134 dB 1600 24 106 dB 24 125 dB 40 134 dB 2000 24 106 dB 24 125 dB 40 134 dB 2500 24 106 dB 24 125 dB 40 134 dB 3150 24 106 dB 24 125 dB 40 134 dB 4000 24 106 dB 24 125 dB 40 134 dB 5000 24 106 dB 24 125 d
57. 4 0 06 0 01 0 00 0 02 0 04 0 00 1060 1059 25 0 03 0 00 0 06 0 09 0 07 0 10 0 08 0 12 0 10 0 12 0 09 0 06 0 07 0 10 0 05 0 06 0 04 0 02 0 08 1120 1122 02 0 06 0 06 0 04 0 03 0 06 1180 1188 50 0 07 0 06 0 03 0 02 0 01 1250 1258 93 0 19 0 18 0 13 0 13 0 11 1320 1333 52 0 29 0 27 0 22 0 22 0 22 1400 1412 54 0 26 0 21 0 15 0 13 0 16 1500 1496 24 0 28 0 23 0 18 0 15 0 19 1600 1584 89 0 25 0 21 0 18 0 16 0 19 1700 1678 80 0 18 0 11 0 06 0 03 0 06 1800 1778 28 0 21 0 18 0 11 0 07 0 09 1900 1883 65 0 09 0 04 0 05 0 07 0 10 2000 1995 26 0 20 0 18 0 09 0 04 0 01 2120 2113 49 0 25 0 18 0 11 0 04 0 06 2240 2238 72 0 52 0 49 0 42 0 29 0 33 2360 2371 37 0 52 0 50 0 39 0 29 0 31 2500 2511 89 0 58 0 59 0 50 0 41 0 42 2650 2660 73 0 43 0 55 0 65 0 76 0 67 0 65 0 53 0 59 0 55 0 72 0 66 0 71 0 65 0 60 0 56 0 56 0 45 0 29 0 27 2800 2818 38 0 46 0 55 0 65 0 75 0 71 0 72 0 55 0 61 0 59 0 72 0 72 0 76 0 74 0 60 0 53 0 54 0 43 0 31 0 32 3000 2985 38 0 71 0 70 0 83 0 90 0 97 0 88 0 75 0 72 0 76 0 81 0 96 0 92 1 00 0 83 0 76 0 82 0 75
58. 7 ms Distance ZAP i oo o0 Synchronizing 05 00 e Wait until the XL2 TA synchronizes to the incoming delay test signal then the synchronization time bar fills up 13 45 S Del 5i l a Sees ia Minirater Act Delay m me me ae STORE m 5 AAmes Act 2 2722 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 TA has to be synchronized to the sig nal source again after 5 minutes When selecting CD Player as the delay signal source the XL2 TA has to be synchro nized to the signal source every 100 seconds Delay Time INTi AUDIO e Start the delay test signal at soeaker A mute speaker B e Position yourself with the XL2 TA at the measurement posi tion next to speaker B sub left as indicated above This is the worst case position in the auditorium with regard to acous tic delay in the sound field The XL2 TA uses the VoiceNote microphone for the delay test do not connect any measure ment microphone Delay Signal B e a Mainirater HAns Act Distance ZAP Measure 13 45 S me OO ms BO mes 20 0m 93 aNTi Delay Time e Select the displayed 0 0 ms below Act Delay with the rotary
59. 9 INTi e Select the memory menu with the rotary wheel AUDIO Data Management confirm with enter e Select Save Screenshot and press enter e Select the file name and confirm SAVE with enter 170 SLMeter 123 KLAE M LAF max GE 110 ASD 13 24 qi FOLDER MEH DIR HFroject m Haning Sowing manual Soave Test Load Test COLLECT RESULTS IN one FILE Start Append Mode fF 2322S HETTE FREE OULD HRITE CACHE EHFTY SET cnt 00 00 30 eo and You may configure the XL2 TA 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 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 2322S HEYTE FREE WRITE i 5 CACHE EHFTY OULD SET caT sae ro Re Le iT Data Management INTi AUDIO If the battery runs empty while you are mea e Connect the XL2 TA with the USB cable to the PC suring with logging and or repeated reporting enabled the XL2 TA creates the folder RE STORE_AFTER
60. AUDIO The XL2 Projector displays the XL2 TA screen in real time on your PC when connected by USB The software toolbar enables control of the XL2 TA Audio and Acoustic Analyzer with the mouse and keyboard XL2 Projector software is a free download for all registered XL2 TA customers on the support website at http my nti audio com The XL2 Projector background color synchronizes with the XL2 TA limit button color 9 The XL2 Projector uses the USB connection in COM port mode 184 Installation instruction e Disconnect the XL2 TA Analyzer from the PC e Register your XL2 TA and download the XL2 Projector soft ware 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 TA Analyzer and connect It to the PC SLMeter 123 LAR E lt ast 17 01 S USE Hode i Select USE mode LAF Mass storage COM port Buick charge LE SHITCHES OFF FOR CHARGING MALININ g Eii 40 ANGE 230 cnt oon on XL2 Projector INT AUDIO o gt esc bm di d SLMeter 123 LP po ASD 16 33 e Select COM port on the XL2 TA Microsoft Windows may recognize the new hardware automatically and start the hardware installation assistant e f prompted select No connection to Windows Update and continue with the instal
61. B 46 134 dB 6300 24 106 dB 24 125 dB 46 134 dB 8000 24 106 dB 24 125 dB 46 134 dB 10000 24 106 dB 24 125 dB 46 134 dB 12500 24 106 dB 24 125 dB 46 134 dB 16000 24 106 dB 24 125 dB 46 134 dB 20000 24 106 dB 24 125 dB 46 134 dB If the sensitivity Sx deviates from the given data a correction value of 20 log Sref Sx has to be added Example Sx 45 mV Pa gt correction value 20 log 42 45 0 6 dB 250 The sampling rate of the filters is 48 kHz Appendix INTi AUDIO self generated Noise with Microphone Refer IEC61672 1 paragraphs 5 6 1 to 5 6 4 9 2 50 Self generated noise with electrical input device S 42 mV Pa Frequency Level range dB weighting low mid high Z 22 23 46 A 11 19 43 14 18 42 Self generated noise with M2230 microphone S 42 mV Pa Frequency Level range dB weighting low mid high 23 25 46 A 17 21 43 20 22 42 The averaging time is 30 seconds for all measurements 251 INTi AUDIO Appendix Refer IEC61672 1 paragraphs 5 2 1 5 2 7 9 3d If an obligatory calibration is required for the sound level meter in accordance with the type approval then the precision cali brator CAL200 should be used e Type Larson Davis CAL200 e Level correction 0 12 dB e Calibration frequency 1 kHz reference frequency e Calibration level 114 dB reference sound pressure level Please make sure that during t
62. E cn GO e Confirm with enter SLMeter 123 LAR E lt ast 13 24 S 40 3dB LAeg LAF max a dB LLULL SET in ANGE 110 cnr ataoenn e Select further sound pressure levels as described above e g LAeg and LAFmax 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 lt in front of the measurement val ue or a flashing 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 The numeric result page and the real time ana lyzer page use the same input range 37 INTi AUDIO e The XL2 TA is ready to measure the sound levels Lar LAeg and LAFmax e Press start pm LAeq LAF max 38 SLieter 12 ALA A BREE 47 7 B TILIL il RHGE 110 Sound Level Meter 49 6dB 61 8dB gt SET CHT GG i e Press stop gt m to stop the measurement LHeter ie 38 2dB Lieq 4 db LAF max 68 2dB DARAAN ga oe 10 AGE t40 Cnt Go o0 30 Sound Level Meter INTi AUDIO e Select the memory menu with the rotary wheel amp 3 and confirm with enter The XL2 TA stores the numeric sound pressure levels and the real time analyzer results simul taneously SLMeter 123 KLAM 7 4 ast 13 24 S FOLDE
63. ER MEH DIR H FProject 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 164 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 file naming and saving auto The results are named and stored automati cally in the selected project folder manual 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 TA screen in the selected project folder Loads back 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 a
64. Heter 123 sLAE Y ASD 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 TA to avoid overwriting of existing mea surements whereby SLM is the appendix for the mea surement function and 001 is an automatically increment ing number Data Management INTi AUDIO Voice notes are recorded speech annotations for each stored SLMeter 123 4 LRle T 4 asp 13 24 a measurement The XL2 TA utilizes the internal voice note mi FOLDER MEH DIR crophone for the recording MyProject 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 YVOICEHOTE I 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 16
65. Hz 20 kHz SH O0Hz 1 7kH2 1 12 kH2 RHEE un Tals pl anit en Read the detailed description in the separate chapter Capture Tolerance e Press enter to store the test results or select Save Screenshot to store the screenshot 73 INTi Reverberation Time RI60 AUDIO The XL2 TA measures the energy decay from 63 Hz to 8 kHz using the Schroeder method in 1 1 octave resolution The optional Extended Acoustic Pack enables 1 3 octave band resolution from 50 Hz to 10 kHz 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
66. IPA 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 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
67. Logging On 2 Interssal dt OMe a 3 Add Spectra Ho A Log Audio On 5 Format Compressed AGl 6 Log values Selected torn r 1 LAF max e LAF iin i 4 LCP Kmax H 4 g 46 Select Logging with the rotary wheel and press enter to enable the automated logging of test results On The XL2 TA logs measurement data ev ery interval dt Q Off No Logging Adjust the logging interval The optional Extended Acoustic Pack offers the additional 100 ms logging Select Yes to log additionally the RTA spectrum at each log ging interval The XL2 TA logs audio data as a wav tile Choose among 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 im m e e e e ee ee m Eyents Choose among the following audio recording settings Compressed Compressed audio logging Compressed AGC Compressed audio logging with automated gain control 24Bit_48kHz Linear audio logging in 24 bit 48 kHz resolution optional with Extended Acoustic Pack Sound Level Meter INTi AUDIO 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
68. 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 ww LG LAFmay LEnCHE _ENFTY a0 ANGE 230 H SO cre MOO mw T0000 40 AGE 130 ma HHLA 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 TA to avoid overwriting of existing mea surements whereby SLM is the appendix for the mea In append mode the XL2 TA does not store surement function and 001 is an automatically increment e Log files ing number e Wav tiles e Select START and confirm with enter e Repeated report files generated in timer mode repeat and repeat synchronized 178 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 LilLocaTtIon r0 RENANE HEAS ID EDIT Alternatively the XL2 TA can append measure HyLocation Hl ment data to the same report file automatically e St
69. PE CI se incase eeepc eee 221 Appendix 1 Standard Optional Features 221 Appendix 2 Factory Default Profiles e 225 Appendix 3 Description Sound Levels 08 230 Appendix 4 Common Sound Levels c0ccceeeeeees 234 Details regarding IEC61672 1 cccccesceesseeeeeeeeseeeeees 244 General TON MMAR ON oss catwaemmnsrencaaeastuerstacevtazcuduadtuancned 245 Level LINGALItY ccccccccecccceceesseeeee cece cece seeseeeeeeeeeees 248 Level Linearity of Octaveband Spectrum 0005 249 Level Linearity of Third Octaveband Spectrum 250 self generated Noise with Microphone 06 251 Precision Calibrator cccccceccccceccceseeeeeeueeeeeeeeeeuneees 252 Frequency Response Corrections at 250 20000 Hz 254 Frequency Weighting cccccceccceeeceeeeseeesseeeeneeeenes 257 Directional Response dB s cccscccswessnsienssinndannnewerdanaerss 299 Compulsory Calibrated Applications cccceeceeeeee 262 Information for Calibration ccccccsceeesseeeeseeeeeeeees 263 Thank you for purchasing the XL2 TA Audio and Acoustic Ana lyzer The XL2 TA 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 functionalities is tailored for e Audio Acoustic Installations Installed Sound Life Safety Systems AV Install
70. R MEH DIR LAF HyFroject Homing Saving manoal Saue Test Save Screenshot Logd Test LA Start Append Mode A Microsoft Excel form generating an automated re i fl iadd HETTE FREE port and chart is available as free download for all reg EN EE eee istered XL2 TA customers on the support website at http my nti audio com Enable all macros when opening the LLLI SET il PHGE i10 p CHT opaan document e Press enter to store the test results or select Save Screenshot to store the screenshot 39 INTi Sound Level Meter AUDIO The XL2 TA 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 TA e Switch on the XL2 TA e Position the XL2 TA at the measurement location using a mi crophone 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 40 The XL2 TA displays two different sound pressure levels at the same time You configure which test results to display e g LZFmax 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 ihi LA E 4 Ast 13 24 S
71. Range 75 23 0 VDC minimum 6 Watt Charges Li Po battery during operation e USB Power Supply 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 1 4 e Wire stand mounted on rear side e Display 160 x 160 pixels grey scale with LED back light e Dimensions L xW x H 180 mm x 90 mm x 45 mm 71 x3 5 x 1 8 e Weight 480 g 1 Ib including built in Li Po battery 10 C to 50 C 14 to 122 F Specifications Humidity Susceptibil ity to radio frequencies Electromag netic Com patibility Protection Rating ATEX INTi AUDIO 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 IP51 e For applications in explosive atmospheres within zone 2 in accordance with IEC 60079 e Conforms to 94 9 EC All specifications are according the standard EC61672 Other applicable standards are listed the corresponding specification position 213 INTi AUDIO Microphone Type Classification according IEC 61672 and ANSI 1 4 Capsule Transducer PreAmplifier Type Flatness tolerance bands typical Frequency Range Residual Noise Floor typical Maximum SPL THD 3 1 kHz Sensitivity typical 1 kHz Tempe
72. SD Card is full The memory of the SD Card is full Download all data to the PC and emp ty the SD Card Othe or Messages on Display In case any other error message is shown on the XL2 IA dis play then kindly report the full error message back to NTi Au dio Your feedback supports the developments of the instru ment Thank you 192 LOICU I JALEA 4 iVaVvn ICS IOL c Ti 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 errors Check Now Defragmentation amp This option will defragment files on the volume a Defragment Mow Backup ae This option will back up files on the volume te 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 TA is executed by placing the XL2Vxxx xx file in the root directory of the XL2 TA When started the XL2 TA automatically completes the firmware up date Projects XL sys 1 This file opens the XL2 TA instrument status page for on line e Firmware updat
73. 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 TA to start up with individual On Dimmed and Off preset application profiles For example sound level moni toring 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 158 System Settings INTi AUDIO 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 TA is powered up connected XL2 Off The phantom power is switched off when Ask on Select either the Mass storage or COM port the XL2 TA is powered up Useful for ex connect mode after connecting the XL2 TA to the PC ample when it is common to measure lines Mass The PC recognizes the XL2 TA as a mass storage storage device automatically allowing you to Remember The XL2 IA remembers the setting prior download
74. The numeric result page 123 SLMeter displays the selected broadband sound level results You can change the font size of the result Depending on the font size chosen the XL2 TA shows three or five results simultaneously Individual frequen cy weighting time weighting actual minimum maximum and correction values can be chosen for each displayed result 8 SLheter 12a LA E i aso 13 24 g 88 7dB Leg 70 6dB 2 LeFeak 4 A dE MAMAMAN po Tor 3 a0 HGE 150 Cir ec 6 4 5 26 The real time analyzer page RTA 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 RTA is measured in parallel with the A and Z weighted wideband levels 17 JANGGA TEES 3 LFF ox EB 6dE 1 3 OCT 16 ta LEFljve 38 2dE 2HBH2 15 10 nd 11 ED aoii Eis e 2 12 20 14 im fi 13 a0 BO 250 ik Yk 20k Az TT p SET 10 ANGE 210 Cit coos 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 s to select the actual test result e Press enter 1x 2x or 3x to set the font size to small medium o
75. UDI Adjustment of preset measurement time for single timer setting 10 Bre Userselectable display of broadband results A A weighted broadband sound pressure level C C weighted broadband sound pressure level Z Broadband sound pressure level without any fre quency weighting z none You may select any frequency to read out individual levels The selected frequency is indicated by the cursor arrow 12 43 e You may readout any individual frequency e Return to auto frequency with enter 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 Choose between the following settings A inal 100 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 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 ASD 14 The XL2 TA provides 48 V phantom power supply to the microphone or sensor An NTi Audio measurement microphone with automated
76. UDIO 63 INTi AUDIO FFT Analysis Tolerance Besides the comprehensive sound level meter function the XL2 TA Audio and Acoustic Analyzer offers the following acous tic measurement functions e FFT Analysis with optional tolerance function e Reverberation Time RI60 e Polarity e Delay time e 1 12 Octave Tolerance Analysis optional e Noise Curves optional e Speech intelligibility STIPA optional 64 The FFI measurement is the ideal tool for visualization of comb filters and narrow band effects It allows a detailed fre quency response investigation of audio and acoustic systems The XL2 TA 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 S AHABHz iri Oct Tol Holse Curves STIFA Cinema Meter Calibrate Profile system Settingsl ca gyz SET 10 PHIGE 110 T bls Pe a dara a arn CiT Re e e e FFT Tol ikr ALA AT Asi 13 24 S EH 1AS 50E O lLinit Ih Live 11 4dJE 58 00 Hz Eii 40 58 00H2 QL TkHz 1 12 kHz S wo RAGE so Teds PE cnr ogomeg FFT Analysis Tolerance INTi AUDIO This
77. XL2 TA measurement reports to the last shutdown default setting COM The PC recognizes the XL2 TA as a COM port port automatically for application of the XL2 Projec Enables disables the rear speaker For example it is recom tor 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 159 INTI System Settings AUDIO swe ni Gl aau o6 53 g 11 Firmwore 12 Serial number 13 Options Extend Acoustic ST IFA Remote Measurimnt Spectral Limits Cinema Assistant Type Approved 160 YebH A2A 2311 02 Installed Installed Installed Installed Installed Hot installed Displays of the firmware version number 11 to update the Displays the instrument s serial number 2 Displays the options installed on the XL2 TA 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 erate sch Ed aso 14 07 ae Scheduling Function SLHete
78. _POWERFAIL and stores the measurement data up until the switch off time The next time you switch on the XL2 the fol lowing window informs you that this data ex Lar ists Click OK SLMeter 123 LAR E lt ast 17 01 S USE Hode Select USE mode Woe COH port Restore Data Quick charge nL SHITCHES OFF FOR CHARGING Incomplete Dota sawed if oroe mu SET RESTORE_AFTER_POWERFAIL ee a e Select Mass Storage and confirm with enter Initializing The files may contain invalid data at the end of the file which you may delete to create a valid report 171 INTi Data Management AUDIO Pers Projects autorun inf ran E e Open the folder Projects and the subfolder MyProject 172 If the XL2 TA is started with USB connection to PC then the COM port mode is automati cally 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 TA first and connect the USB cable to the PC afterwards a MivToct SIM 000 123 Log txt MyTest_SLM_000_123_Report txt od MyTest_SLM_000_4udio_F5133 00B PK _ O0 way E MyTest_S5LM_000_RTA_3rd_Log txt ve MyTest_S5LM_000_voiceMote way lak MyTest_SLM_O01_Screenshot bmp NE OO OT CB DCM gt system file for use by XL2 TA only It contains the measure ment data and test configuration of the last measurement cycle for later reload and view
79. a the Input ranging or the preset measurement time For passed failed measurements with the Spectral Limits 9 option the run indication may display A for a preset auto Adjustment of preset measurement time for single timer mated level trigger 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 H he 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 43 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 e Select the readout frequency 10 and press enter e The zoom mode is displayed above the flashing arrow e Select the zoom in frequency with the rotary wheel e Press limit W and zoom the linear frequency scale in or out with the rotary wheel e Release limit W and scroll the linear frequency scale left or right with the rotary wheel 48V The XL2 TA provides 48 V
80. a 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 TA 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 TA Support website http my nti audio com for all registered us ers 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 STI gt 0 63 One single measurement is sufficient e The ambient noise has to be sufficiently static during the measurement A signal noise ratio of 15 dB or higher is rec STI lt 0 63 Perform three subsequent measurements for this ommended to achieve best speech intelligibility Impulsive measurement position ambient noise during the measurement such as speech e f the maximum result deviation of these three causes severe measurement errors The STIPA result is usu measurements is gt 0 03 then further three ally too high measurements shall be performed e f the maximum result deviation of these mea e Fluctuating noise is detected by
81. a 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 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 speaker cabinet e Measure the polarity of the
82. al 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 GET 40 pge Tds Woo inirapan AT a e Confirm with enter 145 INTI Capture Tolerances AUDIO iri Oct ARLE ASD 11 30 S Wiz Oct LA i asp 11 30 S y 1 12 OCT Capture Et a r lie 115 Hz Manage captures 16 E 250 ik 4k 16k Z RUUD SET MMM SET o ANGE 40 Cels E cntoa 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 146 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 unused frequencies All remaining frequency data has to remain the same Any frequency changes will be discarded by the XL2 TA Load the new capture file with Manage captures back into the internal XL2 TA memory Capture Tolerances Blank the upper parameter by setting Select the lower parameter with the rotary wheel Confirm with enter
83. 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 AUDIO e Position the microphone at the STIPA measurement point e Select Measure without any test signal presence STIFA Cor LA Bl Holse to odd Band SHAH Hz A 36s YAHBHs MM 2806 Hz LBBB Hz LOAD SAVE CAAH S Hz 125H2 SOURCE OF DATA Measured 2812 1 23 Bod ASD 16 30 S Ambient Hoise Correction Un L2eq EDIT 42 6 dB be ldb 68 6 dE 4 dB 43 2 dB 61 806 1 46 18 56 You may edit the noise data 127 INTi AUDIO STIPA e Select the STIPA result page 123 e Perform the default STIPA measurement 128 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 TA Analyzer then you may post process your measurement dat
84. ance 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 SLMeter RTA function Acoustic Analyzer True peak level in 1 1 and 1 3 octave resolution FFT Analysis 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 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 speaker FFT and 1 12 octave function Capturing of multiple readings into the internal memory Comparing measurement results against cap Reverbera tures with relative or absolute curve display tion Comprehensive tolerance handling with toler Time RT60 ance masks based on captures for passed failed measurements Export and import of tolerance and capture files Noise Curves Noise Rating NR in accordance with ISO 1996 Noise Criteria NC in accordance with ANSI 12 2 2008 and 1995 Room Noise Criteria RNC Delay Time in accordance with ANSI S12 2 2008 Room Criteria RC in accordance with ANSI S12 2 1995 Preferred Noise Criteria in accordance with ASA 1971 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
85. art the Append mode and set Auto Append is ON in the memory menu or in the pop up Lar A 6 l 6 dl B window Start Append Mode LAF max 44d If you select SKIP in the Append Data window at PNE 130 E a ee then no measurement data is appended to the report file 179 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 TA 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 stored 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 180 Data Management INTi AUDIO INTi XL2 Data Explorer AUDIO XL2 Data Explorer is a PC based software application with a powerful data processor for easy and fast analysis of sound lev el measurement data It is dedicated to acous
86. ase 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 141 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 max dB Lae m m dB HANN g TONON 30 RHGE 130 Sy a0 8s 08 LAF max dE MINNI SEEE 30 ANGE 130 SH oo 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 TA again or select EXIT Profile in
87. asurement 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 TA 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 preselect 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 DO oe 30 AHGE 130 a REL 177 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
88. ation 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 135 INTi Calibration AUDIO 48V The XL2 TA provides 48 V phantom power supply to the connection microphone or sen Sor 1 ASD An NTi Audio measurement microphone with AnA LP Gl asp i324 automated sensor detection ASD is con ae nected The XL2 TA reads the electronic data 5 Sensitivity Siim Fa H4260 FACTORY sheet of the microphone and switches the 3 izer calibration inn 48V phantom power automatically on 4 Calibrator Lewel 114 606 l l 5 Lop S4 7dB Phantom power is switched off 6 ASO Data NTL Audio Mteee SrH balasa Factory sensitivity of measurement microphone in Factory Sens User Sens Fiia Fag L u Pa mvV Pa The sensor detection of the XL2 TA reads the sen sitivity automatically from the electronic datasheet of the connected NTi Audio measurement microphone or micro phone pre amplifier Sensitivity setting with an external
89. ations Cinemas e 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 TA push buttons are displayed as icons esc Dm La De A detailed description of the push buttons Menu items displayed on the XL2 TA page screens are shown in this user manual by a bold font e g SLMeter Parameter INT Introduction AUDIO Product Configurations The following items are included with the respective type ap proved model e XL2 TA Analyzer with Firmware V2 71 equals XL2 with installed Type Approval Op tion Test Signal CD Li Po battery USB cable Hand strap Operating manual M2230 Measurement Microphone consisting of MA220 Microphone PreAmplitier MC230 Microphone Capsule Dust Cap 50 mm Windscreen Microphone holder MHO1 with Adapter 5 8 3 8 Operating manual Individual Frequency Response Chart e ASD Cable e Precision Calibrator e Optional Extended Acoustic Pack for XL2 TA Overview INT AUDIO 2 Overview Di Mount XL2 TA interfaces O Output Digital I O USB Connector XLR Input TOSLink Output RCA Input QSD Card Voice Note Input DC Power Socket INTi Overview AUDIO Either a balanced audio signal an NTi Audio measu
90. 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 the XL2 TA recognizes this interruption triggers measures the de cay 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 TA measures the decay time and cal culates 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 TA 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 TA e Switch on the XL2 TA e Position the XL2 TA at the measurement location using a mi crophone 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 sour
91. bration frequency 1 kHz reference frequency e Calibration level 114 dB reference sound pressure level Norsonic Sound Calibrator Nor1251 e Level correction 0 15 dB e Calibration frequency 1 kHz reference frequency e Calibration level 114 dB reference sound pressure level 253 INTi AUDIO Appendix Refer EC61672 1 paragraphs 5 2 4 5 2 5 5 2 6 und 9 2 4d Corrections below 250 Hz are 0 0 dB Nominal Frequency Actual Frequency 0 Free field 0 Free field Impact of 0 Free field Correction Tolerance Limits of Frequency Response Correction Wind Screen with Wind Screen the Corrections Hz Hz dB dB dB dB dB 250 251 19 0 0 0 0 0 0 0 0 0 4 315 316 23 0 1 0 1 0 0 0 1 0 4 400 398 11 0 0 0 0 0 0 0 0 0 4 500 501 19 0 0 0 0 0 0 0 0 0 4 630 630 96 0 1 0 1 0 0 0 1 0 4 800 794 33 0 0 0 0 0 0 0 0 0 4 1000 1000 00 0 0 0 0 0 0 0 0 0 4 1060 1059 25 0 0 0 0 0 0 0 0 0 4 1120 1122 02 0 0 0 0 0 1 0 1 0 4 1180 1188 50 0 1 0 1 0 1 0 2 0 4 1250 1258 93 0 1 0 1 0 1 0 2 0 5 1320 1333 52 0 1 0 1 0 1 0 2 0 5 1400 1412 54 0 1 0 1 0 1 0 2 0 5 1500 1496 24 0 1 0 1 0 1 0 2 0 5 1600 1584 89 0 0 0 0 0 1 0 2 0 5 1700 1678 80 0 0 0 0 0 1 0 1 0 5 1800 1778 28 0 1 0 1 0 1 0 1 0 5 254 Appendix INTi AUDIO Nominal Frequency Actual Frequency 0 Fr
92. ccurred 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 TA Input Keypad 2 Event triggered or marker added by pressing key 2 of the XL2 TA Input Keypad 3 Event triggered or marker added by pressing key 3 of the XL2 TA Input Keypad 4 Event triggered or marker added by pressing key 4 of the XL2 TA 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 55 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 RTA Trigger Events on level gabowe Start dE 0 0 for Bes Stop d6 56 0 16 for 83s Level LAF Log Audio Events Onky Format Compressed Record whole ewent Status Stopped Curr Level 64 9dB 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 56 Tr
93. ces to establish silence 81 INTi Reverberation Time RI60 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 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 x Ind
94. ceseeeeeeeeceeae sees 106 Attaching the Hand Strap cccccccccceccccecccesseeeeseeeens 17 Speech Intelligibility STIPA optional ee 116 eine aN Rar ie 6 Audio Analyzer ccccccceeecsseeeeeseeneneeeeeneaeeeeeeseenenes 131 E A T ie ester cceeen ee ie RMS THD4N n 131 Switching the XL2 TA On and Off 20 OOE execs 134 Select Measurement FUNCTION ccccceceeeeeeeeeeeees 20 EEE Calibration prior Measurement ccc eecccceeeeeeeeee eens 21 7 Calibration saicnceetedccvedesssccannsi sina enseved vases sa eduiancnesscsseectes 135 4 Sound Level Meter ccccccscceeeseseeeeeeseeeesesseeeeenes 22 8 PONS soiree cee acest rect sees ERE 138 OVEIVIEW ccc seoseeeennecenneseniecenaecenneeenieessasien 26 9 Spectral Limits Option Capture Tolerances 145 Sound Level Meter Getting Started 34 RTA Measurement Getting Started 0c ee 40 10 System SettingS cccccececcceseeesseeeeeeeeeesseeeeseeeeeseaes 157 FRE OO FN eee E E EN 45 De CIOS AEREE AAE AE A E T 157 Ea ea o AEE E E EAN TE E E TA 46 PTOI CO esmara aae EEEE EEE 160 Waw File RECOrding cccccceceeesesceceeeeseeeesseeeeeeeeeees 48 Sme oU ae a A N ee ee 161 Eveni AOD OMAN cietet tess race e e n 50 HV TN ESEESE P EEEE ate teens Sais euea E 57 Cornrection Value KSE seassninsstacensue Rasatemctetatea ioien 59 INTi AUDIO Table of Contents 11 Data Managemen cccccceeeeeeeeeeeeeeeee
95. ch intelligibility signal at standardized levels NTi Audio 600 000 085 203 INTi 204 AUDIO Further Information 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 repaired 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
96. cing possible feedback frequencies Press stop bm to finish the measurement window of 5 seconds LAeg6o tk1 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 228 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 Appendix INTI 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 these limits Melee Lim eLA E i ast 15 20 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 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 TA customers 229 INTi AUDIO Capt 230 App
97. d INTi AUDIO e Connect the source to the XL2 TA with an XLR cable e Connect the source to the XL2 TA with an RCA cinch ca e Select the XLR input in the menu ble 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 TA SLMeter RTA a Press power amp and hold it down for one second to switch off iflz Oct Tol g the XL2 TA Holse Curves Heh iei inema Meter set 82 3dB rotile System Setting 69 0 dE UT SET 30 RAGE 130 Bent aceon 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 Now the parameter is set INTi AUDIO Getting Started Calibration prior Measurement We recommend the daily calibration of the XL2 TA Analyzer with the precision calibrator This ensures accurate measur
98. d and stored simultaneously 102 The XL2 TA 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 i7iz Oct KLA A ASD 11 27 S d2 1 12 OCT ne ki Trade 21 80Hz hda 16k Z SET 40 pHGg iuo T8 is E a CAT ws RT T HHH e Confirm with 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 fiz Oct LA ast 11 25 g Ef dB iriz OCT tl Live 69 50B 2Z1 86Hz Bo 16 E e250 ik 4k ATTIN 40 gai TAi E 104
99. dback to the XL2 TA Input Keypad thus the setting is disabled 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 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 TA Analyzer at front of house FOH e Connect the XL2 TA 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 INTi AUDIO Sound Level Meter Level Differenc Prior to the start of the live event the level difference between the loudest and the measurement position is measured The XL2 TA Analyzer calculates the level difference automatically based on the individual sound level measurements at both lo cations This level difference is included in the sound level read ing durin
100. dels provide the single value STIPA result The built in error detection helps identifying faulty measure ments caused by the amount of impulsive ambient noise Such noise influences the accuracy of any STIPA measure ment The error detection checks the following e Invalid modulation indices in individual octave bands mri or mr2 gt 1 3 e Changes in ambient noise or any impulsive noise dur ing the measurement by comparing the first half of the measurement period with the second half Individual octave bands are marked with in case of a e Missing test signal level e Invalid modulation indices mr1 or mr2 gt 1 3 e Changes in ambient noise or any impulsive noise during the measurement 2 The measurement result flashes in combination with the question marks in case of a e Question Mark at one or multiple octave bands See the STIPA Table Result Page on the XL2 TA for details e Changes in ambient noise or any impulsive noise during the measurement In case the question marks are flashing then the measurement is faulty Verify possible causes and repeat the measurement For details see the chapter STIPA Measurement Hints The XL2 TA 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 TA Switch on the XL2 TA Position the XL2 TA at the measurement location using
101. e ment results 21 INTi Sound Level Meter AUDIO The XL2 TA 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 TA the sound level meter dedicated to certified measure ments The XL2 TA with the M2230 microphone forms a type approved sound level meter onenng class 1 performance ac 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 complete the documentation of the measured sound pressure levels the XL2 TA offers wav file recording as well as the facility to add voice notes for each measurement The XL2 TA 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 TA measures the real time spectrum either 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 RIA function Recording of linear wav files 24 bit 48 kHz Pe
102. e band in 0 1 dB wide classes based on sampling Lxy x A C or Z y F S or EQ 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 209 INTi AUDIO Functions of Spectral Limits Option optional 210 Specifications 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 Measurement Units Volt dBu dBV and dBSPL 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 accord
103. e been verified by German PTB during the type approval process Instantaneous sound pressure levels LAF A weighted sound pressure level with time weighting FAST LAS A weighted sound pressure level with time weighting SLOW LOF C weighted sound pressure level with time weighting FAST LCS C weighted sound pressure level with time weighting SLOW LZF unweighted sound pressure level with time weighting FAST LZS unweighted sound pressure level with time weighting SLOW LAI A weighted sound pressure level with time weighting IMPULSE 262 Time averaged sound pressure levels LCpeak Peak value of the C weighted sound pressure level LAeq A weighted average level LAE A weighted sound exposure level LAF I3eq A weighted clock impulse maximum level with time weight ing FAST for a clock impulse duration of 3 seconds LAF I beq A weighted clock impulse maximum level with time weight ing FAST for a clock impulse duration of 5 seconds e Integrating sound level meter type NTi Audio XL2 TA e Germany Switzerland 21 21 A3 13 01 98 The XL2 TA Sound Level Meter requires that the approved firmware version V2 52 be installed e Austria OE 14 s 020 The XL2 TA Sound Level Meter requires that the approved firmware version V2 71 be installed INTi AUDIO Appendix Electrical input facility Refer EC61672 1 paragraphs 5 1 15 9 3 9 The capsule replacement NTI K65 15 is used to insert electri cal signals to
104. e 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 among various screens depending on the menu function selected INTi Overview AUDIO 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 The headphone output provides a linear output signal using the SLMeter function for input levels of approx 30 dBu and higher which equals at M2230 85 dBA M2211 92 dBA utilizing a pink noise test signal The power button switches the instrument on The XL2 TA is immediately ready for operation Holding down the power button for one second switches the XL2 TA off Additionally a brief press of the power button toggles the backlight during operation e 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 FFT Tol The limit button lights up green for results within tolerance and red for out of tolerance results Polarity he limit button lights up green at positive polar ity and red at
105. eatures e IEC 61672 class 1 ANSI 1 4 Type 1 e Compliant for 0 and 90 sound incidence e Non corrosive material e 3 8 Tripod Mount e Supplied in a protective case NTi Audio 600 040 060 Q 89 4 dBA 85 3 dBLeq XL2 Data Explorer is a PC based soft ware application with a powerful data processor for easy and fast analysis of sound level measurement data The data import requires the Data Explorer Op tion installed on the XL2 TA Download the software at the XL2 Support Page http my nti audio com The XL2 Projector displays the XL2 TA screen in real time on your PC when con nected by USB Free download at the XL2 Support Page http my nti audio com Further Information INTi AUDIO 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 White Noise Pink Noise Polarity Test Signal e Delay Test Signal e Uploaded wav tiles wav NTi Audio 600 000 310 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 spee
106. ee field 0 Free field Impact of 0 Free field Correction Tolerance Limits of Frequency Response Correction Wind Screen with Wind Screen the Corrections 1900 1883 65 0 1 0 1 0 2 0 1 0 6 2000 1995 26 0 2 0 2 0 2 0 0 0 6 2120 2113 49 0 0 0 0 0 2 0 2 0 6 2240 2238 72 0 3 0 3 0 2 0 5 0 6 2360 2371 37 0 1 0 1 0 3 0 3 0 6 2500 2511 89 0 0 0 0 0 3 0 3 0 6 2650 2660 73 0 2 0 2 0 3 0 1 0 6 2800 2818 38 0 2 0 2 0 3 0 2 0 6 3000 2985 38 0 2 0 2 0 4 0 6 0 6 3150 3162 28 0 3 0 3 0 4 0 7 0 6 3350 3349 65 0 4 0 4 0 4 0 8 0 6 3550 3548 13 0 1 0 1 0 5 0 4 0 6 3750 3758 37 0 3 0 3 0 5 0 2 0 6 4000 3981 07 0 1 0 1 0 5 0 5 0 6 4250 4216 97 0 2 0 2 0 6 0 8 0 6 4500 4466 84 0 3 0 3 0 6 0 8 0 6 4750 4731 51 0 2 0 2 0 6 0 3 0 6 5000 5011 87 0 4 0 4 0 6 0 2 0 6 5300 5308 84 0 3 0 3 0 5 0 9 0 6 5600 5623 41 0 3 0 3 0 5 0 8 0 6 6000 5956 62 0 4 0 4 0 4 0 0 0 6 6300 6309 57 0 1 0 1 0 3 0 3 0 6 6700 6683 44 0 4 0 4 0 3 0 7 0 6 255 INTI Appendix AUDIO Nominal Frequency Actual Frequency 0 Free field 0 Free field Impact of 0 Free field Correction Tolerance Limits of Frequency Response Correction Wind Screen with Wind Screen the Corrections 7100 7079 46 0 6 0 6 0 2 0 4 0 6 7500 7498 94 0 1 0 1 0 1 0 3 0 6 8000 7943 28 0 1 0 1 0 1 0 2 0 6 8500 8413 95 0 6 0 6 0 1 0 5 0 6 9000 8912 51 0 4 0 4 0 1 0 5 0 6 9500 9440 61 0 7 0 7 0 1 0 6 0 6 10000 1000
107. eeeeeeeeeeeeas 164 Record Voice Notes cccccccccecccseeeseseeeeceeseeeeeeeeeees 169 Recall M aSUreEMENtS ccccceccceeeeeeeceeeeseeeeeeeeenes 175 Append Measurements cccccsececeeeeeeeeeeeeeeeneeens 177 12 XL2 Data Explorer optional 02 ecsesseeeees 182 13 XL2 Projector Software cccccccsseeeeeseeeeeeeeeeeeees 184 14 Monitoring Network cccccscecseeeeseeeeeeeeeeeeeeeeeeas 186 15 Remote Measurement cccccceccsseeeseeeeeeeseeeeeas 186 16 Microphones ccceeeceeeeeeeeeeeeeeeeeeeeeaeeeeeesaneeeeenanes 187 17 Further Information cccccccsseeessseeeeeeeeeeeeeeeeaees 190 My NTI Audio 200 ee ccc eecceeeccceeeceeeeeeeeeeneeeeeeeceean ees 190 WS and POUDIES NO OUING aout acknssnnnsencadauntenedagdwsnenosre 191 Firmware Update cccccccccccceeccseeeeeeeeese cess eeeeeennes 193 Options and ACCESSOTIES ccccceeeccceeeeeeseeeeeeneeeens 194 Warranty Conditions cccccccccccccccececeeeseeeeeeeeeeneeees 204 Calibration Certificate sssrinin 205 Service and Repairs 0 2 0 cece ese ccceecece ee eeeeeeeeeeneeeeenees 205 Declaration OF Conformity cususcassawecnedcuuacninanavensdodivaened 206 18 Technical Data XL2 TA ccc cccecceeeeeeeeeeeeeeeeeeeeeeeeas 207 19 Technical Data Microphones c ccccsceeeeeeeeeeeees 214 20 Technical Data PreAmppllifier 2cccssceeeeeeeeeees 220
108. emark Manually Adjusted in the including date and time in accordance with DIN15905 log Tile SLiMeter Eset HLP E asp 13 24 S E aL Position L n L SLMeter Eset MLR El Ast 13 24 S osion Reqs Ft Peak Audience Fun Position LAegS Li Pegk anii ia 0g ia 24 Jleedb 115 r dE Audience un anii 12 0 ia ay Teed 11S ares ae IB1LedB 126 r dE Megsure AN E apa ia pg ia ey PLEJE 126 r dE Difference ki 10 1dE m 8 5dB 3 1 CLEAR ALL HANUALLY ADJUSTED Union 2 Difference ki 1H 1dB p2 11 AdB CLEAR ALL WUT SET s0 ANGE 150 CHT Ooo oo HUT SET s0 ANGE 150 Sent PEE EERE e Turn the rotary wheel to select the correction value 3 and press enter 61 INTi Sound Level Meter 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 Correction Values You may clear all correction values back to zero by pressing the Clear All O and confirm with enter YW 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 62 Sound Level Meter INTi A
109. encies Press stop ba to finish the measurement 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 Appendix INT 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 Pewee Lim LR Gl ast 14 50 a T e Maximum averaged level Limit LED trid La ei The XL2 TA displays this maximum level with the measure eg I Red gt 94 AdE ment result LAeq60 k1 Orange gt 95 0 dE Type of Max level Requirements Green SS AdB live event I O Box On STAT 124 3 100 dB Sound level recording LAegot tk Lregs tkl Results to store for 30 days Dut 1 gt 499 8de ond gt 39 4dE Level warning to visitors Out 2 gt 35 6dB and 99 406 Hearing protection distributed Out 3 SS 6dB ond 9S HdE Chill out zone lt 85 dB A Out 4 2 BVAdB and lt A d TEE 2 96 dB Sound level monitoring Level warning to visitors Hearing protection distributed You may import the log fi
110. endix 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 E The sound exposure level LAE is the LAeg normal a 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 window from five seconds up to one hour Four individual levels can be config ured The moving time average sound level is an Leq based on a moving time window Sample 10h OOmin OOsec Start of XL2 TA measurement 10h OOmin 05sec Legqd Leg of this 5 seconds 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
111. ent microphone Alternatively measure the H polarity of an electrical signal connected with 9 an XLR audio cable T aa 8 l RCA Measure the polarity of an electrical signal con Input nected with an RCA audio cable SUE 425 250 S00 ik Zk 4k Bk 7 2 Displays either POSITIVE NEGATIVE or undefined Polarit Feeoe nied For further visual indication the limit button illuminates E E E S 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 are
112. es e Activation of options INTi AUDIO Further Information e Start the XL2 TA and connect it to the PC e The XL2 TA displays the pop up window USB Mode e Select Mass storage The PC thus recognizes the XL2 TA as a mass storage device e Double click the file XL2 TA htm 1 The web screen XL2 TA Instrument Status opens e Select Look for FW Updates The web screen XL2 Sup port Page opens e Compare the firmware version to the latest version avail able e f an update is required download and save the firmware file XL2Vxxx xx into the XL2 TA root directory e Remove the USB cable and power up the XL2 TA 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 193 INTi Further Information AUDIO The System menu shows the installed options on the XL2 TA The following options extend the measurement functions of the XL2 NTi Audio 600 000 338 The XL2 TA Analyzer measures the speech intelligibility ac cording to the latest revision of standard IEC 60268 16 2011 edition 4 and older editions It includes ambient noise correc tion and automated averaging of measurements The XL2 TA displays the measurement results as STI or as CIS results ac companied by the individual levels and modulation indices of the seven octave bands The measurement results are acquired from
113. exceeds the pre set limits in orange or red color Further external peripherals are controlled by the optional 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 Limits This page provides a wizard to measure correction values which could be helpful for compliant sound level monitoring of live events It measures the correction values between the actual measurement position and the loudest position accessible by the audience The XL2 IA displays and logs the selected sound pressure levels including the correction values allowing the sound engineer to monitor the sound level at the loudest position in the audience The measure ment meets the requirements of the standards DIN15905 5 Sound Level Meter INTi AUDIO This page allows setting the following levels e Moving Time average Sound Level Gliding LAeg with selectable time window from five seconds to one hour Four individual levels can be configured e Percentile Sound Level Allows the individual configuration of seven static levels from 1 to 99 optional with Extended Acoustic Pack The Broadband Source for the calculation of the level sta tistics can be chosen from a set of different levels with either a frequency weighting A C or Z The time weight ings F S and the moving time averaged sound level for one second are supported 25 INTi Sound Level Meter AUDIO
114. f 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 TA immediately displays the STIPA result with ambient noise correction This result provides a guideline if repeated measurements at the same location with averaging is required For details see the 126 e Select the correction page Cor e Turn the rotary wheel to select the parameter Ambient Noise Correction and press enter HEASURE HS Lib SANE SOURCE OF DAT Bod Holse to odd STIFA Cor LA Bl ASD 16 20 S Ambient Holse Correction Bond L2eq EDIT SHAH Hz SHAR HZ HEB LBBB Hz SHB H2 S Hz i 5Hz Default Settings 56 2 dE E 1 2 dE bre dE fi dE r3 dE peed dE feed 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
115. factory default profiles are a free download for all registered XL2 A cus tomers on the support website at http my nti audio com For details see the For detailed settings of factory default profiles please see the Appendix 2 in this manual User User profiles are profiles generated by you on profiles the XL2 TA Analyzer Sample filename MyFirstProfile prfl 144 Secured profiles are locked user profiles with overwrite protection indicated by the file name ending in xxx prfs This file name cannot be overwritten Sample filename MyFirstProfile prts How to generate secured profiles e Export the profiles to SD Card according to Startech e Connect the XL2 TA to the PC e Select the user profile in the folder Profile e Manually change the ending of the user pro file from xxx prfl to xxx prfs e Disconnect the XL2 TA from the PC e Import the profiles from the SD Card Power off on the XL2 TA Analyzer Capture Tolerances INTi AUDIO e Select the Capture amp Start Tolerance Mode symbol for cap turing the measurement result The Spectral Limits Option extends the function range of the XL2 TA with trace capturing relative curve display and compre 1712 Oct LAL E j4 ast 11 30 S hensive tolerance handling for the FFT Analysis and the high EQ 75 8dE 1 12 OCT resolution 1 12 Oct Tol spectral analysis Live CT bde 1i15 8Hz Features e Capturing of multiple readings into the intern
116. g the live event and the XL2 TA thereby displays and records the sound pressure level of the loudest point V easurement Position Microphone Level difference oudest audience area Audience XL2 TA positioned at FOH Position 59 INTi Sound Level Meter AUDIO e Play a pink noise signal at the typical sound pressure level of Wait until the measurement is completed the live event Signal source Minirator NTi Audio Test CD e Position the XL2 TA at the measurement position e Select the correction page Eset e Turn the rotary wheel amp s to select the parameter RUN next e Search the audience area for the location with the highest to Measure and press enter sound pressure level and position the XL2 TA Analyzer e Turn the rotary wheel amp to select the parameter RUN next to Audience and press enter SLMeter Eset ALA Gf ast 13 24 a Fosition L n L Sl Meter Fen KLA E lt ast 43 24 am D OO 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 60 Sound Level Meter INTi AUDIO e Wait until the measurement is completed You may fine tune the correction values k1 and k2 manually e The correction values k1 and k2 are calculated and displayed Such fine tuning adds the r
117. ge and the real time ana lyzer page use the same input range LE 0 E o MAAA eo HO 250 ik 4k elk Ae 5 4 TTT SET il PHIGE 110 Confirm with enter e Follow the same instruction and select the lower RIA pa rameter live 42 e The XL2 TA is ready to display the measured sound pressure levels L7Fmax and LZFlive e Press start Dm SLheter TI LA E i asb 13 24 Loe max E5 6dB 1 3 OCT ils LeF Live 38 2dB 2ZABH2 esi eik Ae LLULL p SET AHGE 110 Hn a Sound Level Meter e Press stop Dal mo Tet dB ols LFF live Cer dE r TT il PHGE id E ASD 13 24 S Les OCT 2 0 0Hz 20k Az SET CHT OO 1 28 INTi AUDIO The XL2 TA stores the numeric sound pressure levels and the real time analyzer results simul taneously 43 INTi AUDIO e Select the memory menu with the rotary wheel confirm with enter SLHeter hid SLAG bs ast 13 24 S LF ma us oo F Sove eano Logd Test COLLECT RESULTS IM OnE FILE n Free lerh Hete a GAME A ATAU ll LULL 30 HGE 130 Sound Level Meter and FOLDER MEH DIR H FProject A manual JE Test E eik Az OWA To cnt GOONS e Press enter to store the test results or select Save Screenshot to store the screenshot 44 Sound Level Meter INTi AUDIO Leq Lmax The RIA Leq Lmin Lmax levels are stored Lmin in the report
118. he FFT function de played fault setting False The measurement result of all log Tolerance data displayed with frequency bands are shown logarithmic frequency spacing e g used in the 1 12 Oct Tol nAllowed Allows a PASSED result with a maximum function Violations number of n failed frequency bands not man datory AutoStart Enables auto start function not mandatory True 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 False No auto start function default setting 155 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 millisec 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
119. he calibration with 114 dB the ambient noise level is lower than 89 dB e Operation without wind screen 0 08 dB e Operation with wind screen 0 12 dB Please refer to the calibrator s certificate for the calibration val ues at the reference environment conditions 252 The calibration has to be executed according to the instructions given in chapter Calibration Ensure that the calibrator is set to 114 dB Add the free field correction values to the reference sound pressure level and enter the result into the XL2 TA under Cali bration Level The calibration procedure and the correction data apply within these prevailing ambient environment ranges e Temperature 10 C to 50 C e Air pressure 65 kPa to 108 kPa e Humidity 25 to 90 R H non condensing from 10 C to 39 C Prior to any calibration both the sound level meter and the calibrator have to be exposed to constant environmental condi tions for the specified duration Firstly always apply the appropriate free field correction value Secondly for calibrations at 23 C 5 C and 101 3 kPa 5 kPa Static air pressure there are no environment correction values to apply If the environmental conditions are outside these ranges apply the relative air pressure and or temperature cor rection values that are listed in the calibrator s certificate INTi AUDIO Appendix B amp K Sound Calibrator Type 4231 e Level correction 0 15 dB e Cali
120. here are no correction values required for this configuration The reference sound pressure level is 114 dBSPL relative to 20 uPa The reference level range is MID 20 120 dBSPL The microphone reference point is located in the middle of the microphone membrane The O reference orientation and the orientation of the membrane s surface normal is identical Refer IEC61672 1 paragraphs 5 1 16 9 3 1 The highest sound pressure level at the M2230 microphone with a sensitivity of S 42 mV Pa is 143 5 dB IEC61672 1 5 1 18 The XL2 TA Sound Level Meter and M2230 microphone meet the given specifications for the electro acoustical response af ter an initial time interval of no more than one minute following switching on the power This assumes that the devices have been allowed to reach equilibrium with the prevailing ambient environment before switching on the power INTi AUDIO Appendix Refer EC61672 1 paragraphs 5 1 15 9 39 The capsule replacement NTI K65 15 can be used to insert electrical signals to the preamplifier MA220 The device pro vides at one side a contact that corresponds to the center con tact of the replaced microphone capsule at the other side a BNC plug for the electrical signals The impedance at the out put of the device is 15 pF with a maximum deviation of 1 pF The electrical noise floor is measured by shorting the con tacts of the BNC plug Before the NTI K65 15 can be mount ed to the preampl
121. hting A C Z e Highpass 100Hz 400 Hz 19 kHz e Bandpass 22 4 Hz 22 4 kHz in accordance with IEC468 4 Remote e Querying measurement data online via the USB Measure interface ment optional Input Output Interfaces Audio Inputs 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 Audio e Built in speaker Outputs e Headphone connector 3 5 mm Minijack Stereo USB Inter USB mini connector for data transfer to PC XL2 face Projector and or charging of Li Po battery Digital I O Connection interface to accessories e XL2 TA Input Keypad e Digital I O Adapter Box e Digital I O Adapter PCB TOSLink 24 bit linear PCM audio signal output prepared for later firmware extension Memory SD Card included 4 GByte removable storing measurement data in ASCII format screen shots voice notes and wav files Power Supply General Clock Calibration Mechanics Temperature 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
122. icating 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 TA 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 pistol 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 aNTi Reverberation Time RI60 e Press stop Da after all cycles are completed e f applicable switch off the pink noise test signal e Select CYC with the rotary wheel O press enter and se e Select the result page RES with page La lect the individual cycle result with the rotary wheel Q 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 measurement uncertainty in ATEB RES LA El ast 13 24 S ASD 13 24 S Correlat 168 gg Gi MEL Uncert 23 5 crc AEG as ATE Liles 125Hz ATbactag 1 06s 125H2 2 0 IMMM 1 2 0
123. id and upper input range The exact ranges depend on the microphone sensitivity setting in the calibration menu of the XL2 TA 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 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 35 dB and can be set by e Selecting SET 1 with the rotary wheel O e Press enter to measure the envi
124. ifier MA220 the microphone capsule must first be detached The nominal sensitivity S of the capsule is S 42 mV Pa Measurements with the NTI K65 15 therefore require that the sensitivity in the calibration menu is manually adjusted to S 42 mV Pa The maximum electrical input voltage is 36 Vpp The attenu ation between the device and the XLR input of the XL2 TA is 0 78 dB at a reference frequency of 1 kHz A 1 kHz signal with 459 mVrms level is required at the input of the device to sub stitute the signal of a microphone capsule with the sensitivity 42 mvV Pa at a reference level of 114 dBSPL 245 INTi AUDIO Appendix Refer EC61672 1 paragraphs 5 16 1 9 2 5p The instrument provides no electrical analog or digital outputs for measurements IEC61672 1 6 1 2 9 31 Recommended time interval for stabilizing the sound level me ter after changes in environmental conditions prior to perform ing any measurements Change in the environmental condition Time Interval Temperature EDG 15 minutes Temperature 20 C 30 minutes Air pressure 5 kPa 15 seconds Humidity 30 15 minutes The time intervals apply for instance after moving from a cold into a warm room and assume that combinations of air tem perature and relative humidity do not yield a dew point greater than 39 C or less than 15 C 246 Refer IEC61672 1 paragraphs 6 3 2 9 2 7a There are no restrictions in place for par
125. 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 TA sets per default Naming Saving auto in the memory menu This ensures that the recorded triggered event data is stored on the SD Card For convenience in case more than 20 triggered events have been recorded the Autosave gt Delete function is disabled as deleting such multiple wav files on the XL2 TA takes a long time 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 TA to high light any sound levels that exceed the pre set limit in orange 2 or 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 TA 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 lamp To set the level values for the limit LED ri e Select the Red or Orange sound level with
126. ion includes e XL2 TA Firmware V2 71 approved Firmware e Sticker XL2 TA e XL2 TA Manual available online at www nti audio com XL2 How do get my XL2 TA ready for accreditation e Install the Type Approval Option on the XL2 and apply the XL2 TA sticker on top of the XL2 label on the display e Download the dedicated firmware V2 71_ for ac creditation from the XL2 Support Page of http my nti audio com to your XL2 TA sound level meter e After the firmware installation the XL2 TA starts with a pop up window XL2Type Approved SLM RTA The sound level meter functions SLM RIA are now certified to meet the Class 1 sound level meter requirements The XL2 TA indicates this function as SLM TA or SLM RTA Type Approved 196 NTi Audio 600 000 430 The Data Explorer Option enables the import of measurement data into the XL2 Data Explorer software a PC based software application with a powerful data processor for easy and fast analysis of sound level measurement data Visualize analyze and control millions of data points with this tool that is dedicated to acoustic consultants and noise mea surement professionals It provides a convenient way to view and manage your data and quickly create customized reports Features of the XL2 Data Explorer software e Data visualization e Fast zoom and pan e Audio playback synchronized to graph e Markers with on the fly calculations e Visualization of recorded events e Custom
127. is Tolerance AUDIO The XL2 TA 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 TA Max Min EQ or captured results e Switch on the XL2 TA e Select the upper result parameter with the rotary wheel B FFT Toll ikr LA E 4 asp 13 24 S TS E e Position the XL2 TA at the measurement location using a mi ae Live So 7dbB if7S i59Hz crophone stand or tripod bl 100 HO BO 40 58 00 H2 fy TH 1 12 kH2 MAIINIT SET 30 pHgE ia ES Wo cippo e Confirm with enter 70 FFT Analysis Tolerance INTi AUDIO e Select the integrated averaged reading EQ All available se FFI lections are Z weighted no weighting _ EQ a Lit 4B 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 TA measures the selected sound pres mum level expected during the measurement sure levels 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
128. isitors during the measurement period of 30 minutes e Maximum averaged level 99 dB The XL2 TA displays this maximum level with the measure ment result LAeg k1 e Maximum peak level LCpeak 135 dB Melee Le LRAD 9 ast 15 36 S LAegg tk 1 93 9aB Laeg k 92 dB LoPRmox ke 1 1 6 0 dB po EEES TEATES Ill S0 RHGE 150 225 INTi AUDIO Appendix These levels are shown in the numeric result page LAeq5 k1 LAeqtk1 LCpeaktk2 The following sound levels are displayed in the real time ana lyzer page LZFhold3 L7Flive 226 Time averaged sound pressure level LAeg with correction value k1 and a moving time window of 5 seconds Time averaged sound pressure level LAeq with correction value k1 C weighted peak level LCpeak with correc tion value k2 For tracing of feedback frequencies The peak hold time is set to 3 seconds Actual real time spectra Select the page KSET with the rotary wheel kz Measure the correction values k1 and k2 as described in the Press the start button Dal The icon LOG flashes during the ongoing measurement In the case where the profile DIN15905 5 amp Audio has been selected the icon AUD flashes indicating the additional au dio wav tile logging During the measurement you can monitor the actual sound level LAegs tk in order to remain below the permitted lim its alternatively you may monitor the spectrum analyzer for tracing possible feedback frequ
129. ized Reporting 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 SsTEFOO 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 INTi AUDIO Further Information e Create new cinema Generates measurement templates according the cinema size with dedicated X curve selection e 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 e Lock into Verify Mode Locks the XL2 TA 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 TA measurement functions The Cinema Meter Option includes the Spectral Limits Op tion In case you have the Spectral Limits Options already installed then j
130. k Oks ABR AZ NIIIN SET TH is E n r I AUNAT INI SET 40 RHGE 140 CNT OG 40 RHGE 140 T Ais E CAT mi l A T Confirm with enter e Select Exit tolerance mode e Select the tolerance Ref with the rotary wheel Q Confirm with enter Confirm with enter e Select the new tolerance file from the SD Card or the internal XL2 TA memory 151 INTi AUDIO Capture Tolerances You may start the passed failed measurement by one of the following possibilities e Press the XL2 TA start button Da 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 1 152 Tolerance curves can either be imported from txt files or di rectly derived from captured measurements The XL2 TA cal culates 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 TA Analyzer Enter the tolerance mode and generate a tolerance band for the capture 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 TA generates a txt fi
131. l 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 The NTi Audio CD STIPA V1 1 included in the package can be used with a professional CD player For details see the chapter STIPA Meat CD Player The standard STIPA signal is based on a band limited random noise of a male speech spectrum STIPH 123 EE FIMDSHEC Imntv 00000 0000000000000 NINNIN 9 ASD 15 47 S 0 8 st lt EEDI re Pint Bat G Use only the original NTi Audio test signal for speech intelligibility measurements with the XL2 TA Other signals may not seamlessly loop thus causing wrong measurement results STIPA STIPH Band S HZ tang Hz AAHH in Hz SAA Hz SHHz 125H2 MTF eR Eat FIHISHEC IMMtHH00 000 0000000000000 000 HEATH L eq Cae dB 63 106 bo 1d6 r 1 2 dE TT l dE 26 3 dE 20 4 dE ASD 15 47 S mel mre p a p T a LT SL T e a INTi AUDIO 117 INTi 118 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 ST
132. l 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 TA Audio and Acoustic Analyzer Example e Command set send to XL2 TA 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 Microphones INT AUDIO Certified Class 1 General purpose Measurement Cost effective class 2 Microphone measurement measurement microphone measurement preamplifier microphone according microphone for high sound levels microphone for general compatible with to IEC 61672 Class 1 frequency up to 153 dB sound level testing 1 2 pre polarized Metal diaphragm response Class 1 frequency commissioning and capsules Metal diaphragm response service of audio Metal diaphragm acoustic installations 187 INTi AUDIO Microphones The plug on measurement microphones combined with the XL2 TA Analyzer form a comprehensive sound level meter and acoustic analyzer 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 XL
133. lass 1 Sound Level Meter with A C Z frequency weighting and fast slow time weighting The impulse time weighting is optionally available with the Extended Acoustic Package The type approval applies to the sound level meter in accor dance with IEC 61672 and the Octave Third Octave measure ment in accordance with IEC 61260 Attention should be given to the following recommendations on the environment and the configuration Persons and objects that are located in the sound field during the measurement have an absorbing reflecting or shielding impact on the sound field and may therefore compromise the measurement result Consequently such objects should be re moved from the sound field where appropriate The measure ment microphone should be mounted on a tripod The operator should remain as far away as possible behind the microphone during the measurement 244 e XL2 TA Sound Level Meter Firmware V2 71 Hardware edition D2 or EO Optional Extended Acoustic Pack e M2230 Measurement Microphone consisting of MA220 Microphone Preamplifier MC230 Microphone Capsule e Precision Calibrator CAL200 e ASD Cable 5 meter shielded e Optional NTi Audio Mains Power Adapter Exel Line NTi Audio Microphone Clamp MHO1 NTi Audio Windscreen 50 mm With the microphone connected by the ASD Cable for the convenience of watching the measurement values as they oc cur the analyzer can be held in your hand during the measure ment T
134. lation e Complete the installation LAegs k1 2 XL2 Projector displays the instrument screen in real time 0 R f E E Features e The upper window bar displays the XL2 TA serial number e The menu bar supports remote instrument operation of the XL2 TA Analyzer from your PC 6 qj Fi ad A e All data stored on the SD Card can be accessed directly trom the XL2 Projector software Complete your measurements and click on the SD Card symbol H i 3 by cf E roe Se a SET ai a p GS Gocco For more details and features click the symbol on the XL2 Projector Software 185 INT Remote Measurement AUDIO itoring Network Multiple XL2 TA 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 TA Analyzer with all XL2 TA screens being simultaneously displayed on the PC monitor The Projector Software offers the control of each XL2 TA Analyzer from your PC LAN WAN Network Please contact NTi Audio for application details 186 15 Remote a M asurement The XL2 TA Analyzer offers an optional remote measurement function This allows querying the XL2 TA 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 TA measurement functions are e Sound leve
135. le in the folder Toleranc es 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 TA e Store your individual tolerance file as txt file in the XL2 TA folder Tolerances e Start the XL2 TA 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 TA customers on the support web site at http my nti audio com For details see Capture Tolerances Unit dBr Mode HighLow Columns Frequency Min Ideal Max ATolerances UNDEF 80 undef 90 ZTolerances UNDEF 80 undef 90 BandTolerances LevelOffset 0 HideUnusedBands false nAllowedViolations 0 INTi AUDIO 153 INTi AUDIO Unit Mode Columns ATolerances C Tolerances 154 Capture Tolerances dBr relative fixed setting Describes tolerance type the XL2 TA allows setting of the tolerance type independently of the tolerance file HighLow Utilizes upper and lower toler ance based on Ideal reference High Utilizes
136. les 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 TA customers Maximum peak level LAFmax 125 dB 227 INT Appendix AUDIO The following sound levels are displayed in the real time ana SOO Lec MURIAUD aso 15 27 g lyzer page L7Fhold3 For tracing of feedback frequencies The peak hold time is set to 3 seconds LAegg tk 1 8 G s iB L7Flive Actual real time spectra m Lak 98 5dqdB LAFmgx k1 116 7 qE e Select the page KSET with the rotary wheel e Measure the correction value k1 as described in the chapter lll SET a ee ey ae ene sive 50 PHGE 150 P nogom mound Level Meter Correction Value KSET k2 is not required for SLV Press the start button ba The icon LOG flashes during the ongoing measurement In These levels are shown in the numeric result page the case where the profile SLV 100dB amp Audio has been LAeq5 k1 Time averaged sound pressure level LAed selected the icon AUD flashes indicating the additional au with correction value k1 and a moving time dio wav file logging During the measurement you can monitor the actual sound level LAegs tk in order to remain below the permitted lim its alternatively you may monitor the spectrum analyzer for tra
137. lts The default subfolder name is Log Audio On MyProject You can create further individual subfolders Format Compressed AGC Log Vioglues Selected a 0 LAE a ece This file opens the XL2 TA instrument status page with 1 Lar maxe 5 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 TA system folder contains a file with serial num ber firmware version and installed options 166 Data Management INTi AUDIO e Select the Rep page in the sound level meter function and e Press page to return to the numeric result page set the parameters as follows e Press start P 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 167 INTi e Select the memory menu with the rotary wheel amp 3 and AUDIO Data Management confirm with enter 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 WULD Ii ai A 30 RHGE 240 CT esas pe e Press enter to confirm Save Test 168 SL
138. measurement time is shown Automatically stops the measurement after the pre set measurement time e Set the required measurement time e Start the measurement gt m e All measurement results may be recalled p Provides automated repeated measurements with user defined preset measurement time cycles e Set the required measurement time e Press start ba 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 Sound Level Meter INTi AUDIO 8 qa Provides automated repeated measurements 48V The XL2 TA provides 48 V phantom power synchronized to the XL2 TA real time clock supply to the connection microphone or sen Press start P to begin the measurement SOr In order to align the selected preset measurement time with the real time clock the XL2 TA shortens ASD An NTi Audio measurement microphone with the first cycle to match the real time clock syn automated sensor detection ASD is con chronization All following measurement cycles nected The XL2 TA reads the electronic data are synchronized to the real time clock sheet of the microphone and switches the 48V phantom power automatically on For example the cycle time setting is 30 minutes and the measurement starts at 750 a m gt the Phantom power is switched off first test cycle measures from 750 8 00 a m Thereafter a new test c
139. measuring the direct STI surements is gt 0 05 then the cause of this in in the absence of the test signal Carry out these measure Stability shall be evaluated and removed ments at least at a representative set of locations If the STI e The arithmetic average of the performed three is too high e g STI gt 0 2 the measurement results are or SIX measurements has to be reported likely to be erroneous Then the STIPA measurement should be carried out without this noise being present Utilize the ambient noise correction for such instances Utilize the STIPA Reporting Tool for the documentation of your measurements according the standard e At locations with varying conditions e g some public areas with few people and other areas with crowds the worst An STI gt 0 63 ensures that the speech intelligibility is higher case STIPA results should be measured Consult the local than 0 5 with a confidence level of 95 regulations e g the NFPA code in the U S for directives concerning measurement locations and number of required STIPA measurements under which circumstances 129 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 Inser
140. ment 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 GH WE e A poaa a phantom ponei Level indication 0 U lt 3 7 Volt The battery is pee CORE Nr AE SE E almost empty and must be recharged 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 con nected The XL2 TA reads the electronic data Using standard AA batteries sheet of the microphone and switches the No level indication as long as U gt 4 5 Volt 48V phantom power automatically on Level indication 09 U lt 45 Voli The batteries are almost empty and should be replaced Phantom power is switched off Using mains or supply The real time clock is set in the System menu No indication of battery status INTi AUDIO Getting Started 3 Getting Started Power Supply The XL2 TA offers flexible power management options and can be operated either by e Replaceable rechargeable lithium polymer Li Po battery included with the XL2 TA 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
141. n Zoom FFT up to 0 4 Hz steps in the frequen cy range 5 Hz 20 kHz ias the detailea description in the Sparas chapter 105 INTi Noise Curves AUDIO The Spectral Limits Option extends the XL2 TA with the Noise Curves measurement function A noise curve may be used to characterize room noise or other environments Various stan dardized international noise curves are the most widely used means for evaluating background sound in buildings and other facilities such as transit facilities as well as in other indoor outdoor spaces Residual noise in buildings may be generated from both environmental sources e g outside traffic and sys temic sources e g heating ventilating and airconditioning HVAC systems or other machinery in use It is also frequently necessary to measure residual noise curves prior to expected changes in advance of construction or prior to other expected environmental noise changes 106 in accordance with ISO 1996 Noise rating NR is a graphical method for assigning a single number rating to a noise spectrum It can be used to specify the maximum acceptable level in each octave band of a fre quency spectrum or to assess the acceptability of a noise spectrum for a particular application The method was originally proposed for use in assessing environmental noise but it is now used frequently for describing noise from mechanical ven tilation systems in buildings To make a rating the measured noise
142. nce with ANSI 12 2 2008 If one or more displayed measurement results exceed the limits then large fluctuations exist Con cluding the LEQ levels in the octave frequency bands be low 300 Hz are automatically penalized at the RNC mea surement The noise curve type RNC uses these correction values based on the measured fluctuation results to determine the RNC curve result Noise Curves INTi AUDIO Type of Room Recom Equivalent RC curve Space Type mended Sound Type of Room Recom Equivalent RC curve NC and Level Space Type mended Sound RNC NC and Level Curve RNC Curve Conference rooms 25 35 35 44 25 35 N Concert halls 15 18 Hospitals and clinics 25 45 35 52 25 40 N Small auditoriums 25 30 35 39 Movie theaters 30 40 39 48 Large auditoriums 20 25 30 35 Churches 30 35 39 44 25 35 N Broadcast studios 15 25 16 35 Courtrooms 30 35 39 44 25 35 N Drama theaters 20 25 30 35 Libraries 30 35 44 48 30 40 N Private residences 25 40 35 48 25 30 N Restaurants 40 45 48 52 Schools 25 35 35 40 25 40 N Light maintenance 45 55 52 62 shop Hotels 25 50 35 57 25 45 N Shops and garages 50 60 57 67 Offices 25 40 35 48 25 35 N 113 INTi Noise Curves AUDIO e Select the noise curve type with the rotary wheel Q The XL2 TA reads the electronic data sheet of any connected ASD microphones provided by NTi Audio and switches the 48V H Curwe allt SLR j ast 16 05 a phantom power automatically on a
143. ne sensitivity 207 INTi AUDIO Stabilization Time Integration Time Display Measure ment Ranges 208 Specifications lt 10 seconds Three level ranges depending on the microphone Minimum 1 second Maximum 100 hours minus 1 second sensitivity with manual setting 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 M2211 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 M2215 sensitivity 8 mV Pa LOW lower level range 20 120 dBSPL MID mid level range 40 140 dBSPL HIGH upper level range 60 160 dBSPL M4260 sensitivity 26 mV Pa LOW lower level range 10 110 dBSPL MID mid level range 30 130 dBSPL HIGH upper level range 50 150 dBSPL Residual noise in dB S 42 mV Pa of XL2 TA without measure ment microphone e Frequency weighting A Level range Leg Loeak LOW 4 17 MID 18 31 HIGH 43 55 e Frequency weighting C Level range Leq Lpeak LOW 3 16 MID 17 30 HIGH 41 55 e Frequency weighting Z Level range Leq Lpeak LOW 7 20 MID Z 34 HIGH 46 58 Measure ments Real Time Analyzer RTA Remote Measure ment optional Data Ex plorer optional e SPL act
144. nfirm with enter You may press the page button to toggle between the date and spectral resolution data of the capture 149 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 iiz Oct LA EI 34 5 dE Ref 1h AdBt E FASS ED 20 16 E 250 ik UVUNNUUAUIII 40 EHGe iuo e415 E 150 ASD 13 52 a iriz OCT 2 18HkH2 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 TA Analyzer compares spectral measurements Select the Capture amp Start Tolerance Mode symbol to exit against a tolerance band and visualizes exceptions 1 in every from the tolerance mode frequency band 112 Oct LA Asb 13 52 S 112 Oct LA E aso 13 53 g EG S 30B 1 12 OCT Liwe 39 1 dE iri OCT Ref 16h Adet 2 188kH2 Ref 18 Adet 2 586kHz ma FASE 1 Ei IEN l giz 100 Ho Ho BO BO 40 40 eo 7 16 E E ik 4k iBk Ae 146 63 250 i
145. nly used ac tual sound pressure level Lar frequency weighting A time weighting F e Select the first parameter setting with the rotary wheel Confirm with enter SLMeter 123 LAR E lt ast 13 24 S 40 3dB Lied aaa LAF max a dB ITT E a es 10 ANGE 210 cnt oon on Press start Pm to measure and display the sound levels results indicated with Sound Level Meter INTi AUDIO e Select the frequency weighting A e Select the required time weighting e g LF Fast SLMeter 123 HLA E lt ast 12 24 SLMeter 123 LA E lt ast 13 24 7 mc n PANT AF HORE AF TIHE HEIGHTING 40 9qB E z VEQ LE LAE E LAeg See LAF max dB LAF maze dB TT SET ADUNE E SET ss aaas 10 RHGE 210 CNT GO Oooo 10 RAGE 210 CNT GO Oooo Pop up windows shown at installed Extended Acoustic Option Confirm with enter Confirm with enter 35 INTi AUDIO Sound Level Meter e Select the parameter off 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 36 SLHeter 123 LAR Bi ast 13 24 S FRED HEIGHTING LAF j TIHE HETGHTING T 3 FARAHETER Lae ie LAF max CORREKTION UUNNAANATUUUUTTI il FH GE 110
146. nt triggered 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 Event triggered by external key press of the XL2 TA Input Keypad You can utilize four keys 1 4 to categorize any noise of interest or noise to be later excluded in the post process ing A typical application is categorizing any annoying indus trial noise by persons living in the neighborhood The XL2 TA Analyzer logs the data specified in the LOG setting for the complete measure ment duration into a log file The markers and triggered events results are added to the same log Tile The XL2 TA Input Keypad is available as an ac cessory Please see chapter Options and Acces sories for details 100 K Event Duration y Level dB 3 70 Sa l 13 12 60 K K 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 key press of the XL2 TA Input Keypad Sound Level Meter pYwYrn O1 SLheter RMAs Trigger Events on level gbowe Start dE 0 0 for Bes Stop d6 6 0 16 for B35 Level LAF Log Audio Events Onky Format Compressed Record whole ewent Status S
147. o analyzer RMS THD N INTi AUDIO Further Information NTi Audio 600 000 376 The Spectral Limits Option extends the XL2 TA function range with noise curves trace capturing relative curve display and comprehensive tolerance handling for the FFT Analysis and the new high resolution 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 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 e Noise Curves In accordance with ANSI 12 2 2008 1995 and ISO 1996 195 INTi Further Information AUDIO NTi Audio 600 000 377 The Type Approval Option upgrades the instrument to the XL2 TA the sound level meter dedicated to certified measure ments The XL2 TA 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 Opt
148. of measurement results in the XL2 TA The XL2 TA logs sound levels in pre defined log time inter Final report after the completed measurement For more ingi 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 tile For more details please The XL2 TA logs the detailed real time analyzer spectra in pre defined time intervals For more details please see A voice annotation can be recorded for each stored mea surement or screenshot For r more details please see the Picture of the actual XL2 TA 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 the 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 173 INTi Data Management AUDIO File name e g MyTest_SLM_000_123_Log txt File name e g MyTest_SLM_000_123_Repor
149. on 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 gh 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 Action Lower limit value 80 dB A 135 daB The employer shall make individual hearing protectors 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 protectors worn must adequately reduce the levels below this limit 239 YL YO P OOOL Appendix INT AUDIO INT Appendix AUDIO Appendix INTI AUDIO 243 INTi AUDIO Appendix The XL2 TA Analyzer with the M2230 measurement micro phone fully complies with the IEC61672 1 standard as an in tegrating c
150. ons e Can use another SD Card e Formatting the SD Card e SD Card Errors e Error messages on display e Stored Data or Wav files not available on SD Card If the XL2 TA Audio and Acoustic Analyzer reacts unexpectedly a reset to the factory settings might solve the problem e Switch off the XL2 TA e Hold down escape and simultaneously operate On Oft Further Information INTi AUDIO The XL2 TA 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 Yes you can use any alternative SD Card such as offered in the e Switch off the XL2 TA e Insert the SD Card into the XL2 TA Analyzer e Switch on the XL2 TA In case you need to format the SD Card then we recommend doing so utilizing the software SDFormatter This software en sures the best performance of your SD Card SDFormaitter is a free download at www sdcard org downloads 191 INTi Further Information AUDIO The XL2 TA 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 Format the SD Card on the PC Follow the instructions at Formatting the SC Card in this chapter SD Card is not FAT formatted
151. 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 functioning 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 205 INTi AUDIO Further Information We the manufacturer NTi Audio AG Im alten Riet 102 9494 Schaan Liechtenstein Europe do hereby declare that the XL2 TA Analyzer the measurement microphones M2230 M2211 M2215 M4260 the preamplifier MA220 and accessories comply with the following standards
152. ot e Press the stop button bal to stop the measurement 115 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 indices 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 TA 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 TA Audio and Acoustic Analyzer Ask the local repre sentative for purchasing details 116 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 signa
153. parameters according to the requirements For example measuring the sound levels Lar LAeq and LAFmax for 10 seconds B Ga 12 LA E ASD 13 24 S 69 6dB LAeq E e 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 139 INTi Profiles AUDIO e Select Manage and press enter e Select Save Profile and press enter SLMeter 123 LA E lt asp 13 24 SLMeter 123 LA El asp 13 24 a 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 profile 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 140 Profiles INT AUDIO e Select Configure available screens and press enter e Switch on the XL2 TA SLMeter 123 LAR E lt
154. phone to measure the acoustic delay Do not connect any measurement microphone to the XL2 TA for the delay time measurement Rear Speaker The rear speaker on the XL2 TA is disabled during delay measurements thereby avoiding measurement failures The headphone output is active 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 2 lecturer ee a a a a a EE E n N ee ee PE a a a a a E a a a a a a EE E n N measurement C O O O O o o o og o Posion Be a a a a ee speaker sub right Y speaker B sub left 7 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 TA 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 TT
155. ptures with relative or absolute curve display e Creating tolerance masks based on captures for pee ee a passed failed measurements MANGE so TOMS Ml Saroa ga is 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 e Select the YAxis with the rotary wheel and confirm SD Card for export from the XL2 TA or with enter load captures from SD Card for import e Select the zoom factor between 20 10 5 2 5 dB div to the XL2 TA and confirm with enter e Scroll up and down with the rotary wheel amp s 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 TA 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 TA For example at a sensitivity S 2
156. quent measure ments automatically utilize this usersensitivity 137 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 TA is the flexible user in terface The measurement screens may be personalized and only a limited subset of the comprehensive functionality en abled to create simplified operator interfaces Advanced us ers may access all menus settings and store their preferred measurement configurations For simplicity the XL2 TA Audio and Acoustic Analyzer offers fixed operator interfaces with specific pre defined settings The XL2 TA can boot up with ex actly the required measurement parameters according to the pre defined instrument configurations This ensures accurate measurements are achieved in both advanced and basic usage environments 138 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 0 ASD 12 59 qi 18 Min Auto n Dimmed Date 2Ai2 0r 27 Time ote Ss Action at power on Auto power off Backlight Remember Enabled Ask on connect Fhantom power Spedker USB mode Dec separator e Start the XL2 TA Analyzer in Full mode e Select the typically used measurement function and adjust the measurement
157. r read out the arrow points directly to the frequency band with the highest noise rating as displayed in U 109 INTi 110 Noise Curves AUDIO e Auto Scroll e Zoom Select the YAxis with the rotary wheel amp and confirm with enter Select the zoom factor between 10 5 2 5 dB div and confirm with enter Real time spectrum in 1 1 octave band resolution The grey area shows the noise floor of the connected NTi Audio measurement microphone provided by the electron ic data sheet in combination with the XL2 TA Analyzer X Scale from 16 Hz to 8 kHz Select the LiveView with the rotary wheel to get an overview of the current noise level Alternatively press the limit button 9 The XL2 TA measures the noise curve after pressing the start button PE This will provide the noise rating measure ment in accordance with all standards The run indication shows the measurement status running paused or stopped Various measurement settings are locked during ongoing measurements such as the preset measurement time Noise Curves INTi AUDIO 9 11 Counts actual measurement time in hrs min sec Supports You may select any frequency to read out individual levels time modes continuous and single The selected frequency is indicated by the cursor arrow CiT Choose between the following settings applicable for standard measurements E All values are recorded and monitored continu The cursor follows automaticall
158. r ATA Start 2A11 11 16 t ii i Duration HHHH Recurrence On Does Mo Tu We Th Fre End after 8S occurences Start Schedule System Settings INTi AUDIO The XL2 TA Analyzer offers automated scheduled measure ments without any human interaction You may schedule a measurement for one or multiple days e Selects the preset measurement function e Standby until start time 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 Supported measurement functions e SLMeter RIA e FFT Tol e RT60 e 1 12 Oct Tol e STIPA 161 INTi System Settings 162 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 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
159. r RTA e FFT e 1 12 Oct Tol optional Just change the measurement unit according your require ments See the individual chapters for more details In case an NTi Audio measurement microphone with electronic data sheet is connected then the XL2 TA will automatically activate the mea surement unit dBSPL dB for sound level mea surements Audio Analyzer INTI AUDIO The XL2 TA Audio and Acoustic Analyzer measures the param eters Level RMS THD N and frequency simultaneously RMS THO LR E 13 46 S 2 6 5 D i as W EKSH TINS 2 LYLRHS 18 0dBu 3 THOH 93 7dB nee 100 001 Hz 131 INTi 132 AUDIO Z Weighting A Weighting C Weighting HP 100Hz HP 400Hz HP 19k 22 4 22 4k Audio Analyzer Frequency Z weighting with flat frequen cy response from 20 Hz to 22 kHz De fault measurement setting Frequency A weighting IEC 61672 for low noise levels according 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 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 Measures the absolute level of the input signal The unit s dBu dBV V and dBSPL are
160. r large The XL2 TA 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 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 Sound Level Meter INTi AUDIO The XL2 TA 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 TA 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 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 27 INTi Sound Level Meter 28 AUDIO 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
161. rature Coefficient Temperature Range 214 Specifications M2230 M2211 M2215 Class 1 Certified Frequency Response High SPL Class 1 Frequency Response Class 1 Omnidirectional pre polarized condenser free field microphone Frequency Response Class 1 Type 1 1 2 detachable with GOUNS2 thread type WS2F according IEC 61094 4 MA220 1 dB 5 Hz 20 Hz 1 dB 20 Hz 4 kHz 1 5 dB 4 kHz 10 kHz 2 dB 10 kHz 16 kHz 3 dB 16 kHz 20 kHz 5 Hz 20 kHz 25 dB A 153 dBSPL Class 1 Type 1 Certified 16 dB A 139 dBSPL 21 dB A 144 dBSPL 27 5 dBV Pa 2 dB 42 m V Pa lt 0 01 dB C 34 dBV Pa 3 dB 42 dBV Pa 3 dB 20 mV Pa 8 mV Pa lt 0 015 dB C 10 C to 50 C 14 F to 122 F M4260 Class 2 Class 2 Type 2 1 4 permanently installed 1 4 5 dB 5 Hz 20 Hz 1 5 dB 20 Hz 4 kHz 3 dB 4 kHz 10 kHz 4 5 dB 10 kHz 16 kHz 5 dB 16 kHz 20 kHz 29 dB A 144 dBSPL 31 7 dBV Pa 3 dB 26 mV Pa lt 40 02 0B C 0 C to 40 C 32 F to 104 F Pressure Coefficient Influence of Humidity non condensing Humidity Long Term Stability Electronic Data Sheet Output Impedance Power Supply Connector Diameter Dimensions Length Dimensions Weight NTi Audio Specifications INTI AUDIO M2230 M2211 M2215 M4260 Class 1 Certified Frequency Response High SPL Class 2 Class 1 Frequency Response Class 1 0 005 dB kPa 0 02 dB kPa
162. rcentiles for wide band and spectrum with flexible set ting from 1 to 99 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 The sound level meter offers different pages e Press page to toggle between the 123 SLMeter page and the RTA page e Select the page 123 SLMeter with the rotary wheel Confirm with enter iD 11 30 i SLHeter SREB ht ATA LAF Reporting Logging Event Trigger Limit LEO RSET Correction gt B Set EQT Le Leg 35 5dB LEPE FB 1 dE TTT E SE uiae OO AHGE 100 CHT ens Menu with enabled options INTi AUDIO Sound Level Meter Displays the selected broadband sound level results You can change the font size of the result Depending on the font size chosen the XL2 TA shows 3 or 5 results simultaneously Indi vidual frequency weighting time weighting actual minimum maximum and correction values can be chosen for each dis played result Displays the 1 3 or 1 1 octave spectrum of the selected sound level within the audio band Additionally the wide band
163. re 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 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 kOhm 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 TA to a tripod or microphone stand Overview INTI AUDIO 2 e Press the button briefly to enable or disabl
164. result is shown graphically by a bar Here you set which sound pressure levels shall be 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 Reporting 23 INTi Sound Level Meter AUDIO The XL2 TA features a powerful sound level meter data logger which allows you to record all required sound level values dur ing the measurement In the logging page you set which sound pressure levels shall be logged over time For details refer to ALL Logs all sound pressure levels Selected Logs up to 10 different individually defined sound pressure levels The event function is available with the optional Extended Acoustic Pack The XL2 TA event feature offers the following functionalities e Automated event triggered 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 GB Event triggered by external key press of the XL2 TA Input Keypad You can utilize four keys 1 4 to categorize any noise of interest or noise to be later excluded in the post process ing A typical application is categorizing any annoying indus trial noise by persons living in the neighborhood 24 Here you set the function of the limit LED ri thereby highlight ing any sound level that
165. ronmental 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 oc tave or 1 1 octave band resolution The optional Extended Acoustic Pack enables 1 3 octave band resolution from 50 Hz to 10 kHz 77 INTi AUDIO 48V ASD 78 Reverberation Time RI60 The XL2 TA provides 48 V phantom power supply to the connection microphone or sen SOr An NTi Audio measurement microphone with automated sensor detection ASD is con nected The XL2 TA reads the electronic data sheet of the microphone and switches the 48V phantom power automatically on Phantom power is switched off Select between the RT60 run test page and the result page The page button toggles between these displays RT60 run test page RT60 result page Toggle with the measurement result selection 7 among 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 12 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 uncertain
166. rs and microphones against reference records ensur ing they are back in stock In good working condition Industrial quality testing Passed Failed test in the production 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 TA 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 di rectly derived trom captured measurements The XL2 TA cal culates 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 1 12 Octave Tolerance INTi 1 This field offers two functions e Symbols for measurement results 2 14 13 A ee Upper parameter displayed as line eee ALPET aso 10 00 2 Fa TS4HB 1 12 OCT 12 uu Lower parameter displayed as bargraph aa Live 43 506 F 2 90 kHz 11 Bo e Capture amp Start Tolerance Mode The displayed spectral readings may be captured in C1 C8 for 10 e Comparing measurement results against ca
167. s The XL2 TA 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 TA 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 FFT Analysis Tolerance INTi AUDIO 8 A Offers selectable time weighting of 0 1 0 2 0 5 1 0 sec Counts actual measurement time in hrs min sec Supports ond as well FAST 125 ms and SLOW 1 second Applica setting of time modes continuous and single tions Clit Short Time High resolution in time with minimum applicable for standard measurements Weighting averaging All values are recorded and monitored continu ously after starting a measurement with start Dal Long Time Low resolution in time with longer aver The actual measurement time is shown Weighting aging Automatically stops the measurement after the The run indication shows the measurement status running pre set measurement time paused or stopped Various measurement settings are e Set the required measurement time locked during ongoing measurements such as changing e Start the measurement D
168. s 5 6 5 9 2 5d If the sound level is very low the measurement result is af fected by the noise floor of the sound level meter The speci fied configuration complies with class 1 within the given linear measuring range Refer IEC61672 1 paragraphs 71 9 2 6b The ASD Cable serves as connection cable between the XL2 TA sound level meter and the microphone There are no correction values required for this configuration Mechanical vibrations with 1 m s acceleration perpendicular to the membrane of the microphone will raise the lower limit of the linear operating range to 71 dB A weighted for the fre quencies 31 5 Hz 63 Hz 125 Hz 250 Hz 500 Hz 630 Hz 800 Hz and 1000 Hz Mechanical vibrations with 1 m s acceleration parallel to the membrane of the microphone will raise the lower limit of the linear operating range to 68 dB A weighted for the frequen cies 31 5 Hz 63 Hz 125 Hz 250 Hz 500 Hz 630 Hz 800 Hz and 1000 Hz 247 INTi AUDIO Refer IEC61672 1 paragraphs 5 5 3 5 5 9 9 2 2e 9 3e 9 3f All values refer to Sref 42 mV Pa The starting levels for the level linearity tests are listed in the following tables Appendix Frequency dB Lat Lor L7T LAeqT LAE LCpeak Frequency t 10s dB Lat Ler L7 lt LAeqT LAE LCpeak 215 from 24 from 27 from 30 from 24 from 34 t 10s fto 68 to 105 to
169. s follows HC 288G H27 SIL e Connect the Co microphone to the XL2 TA E UA a PER 16 6H2 ene ae MO angi 42 2 2008 Hc 4D eoise Criteria Mc a5 Room Holse Criteria Nc 30 20 ANSI if 2 1995 NCES Holse Criteria Hc 20 io Room Criteria Hicis ASA 1971 e Select the Noise Curves function in the measurement O Pref Hoise Criterial Bl menu Live View A bET estesi HOLD LIHIT KEY CAT a as RR The microphone should be moved slowly to po sitions around the entire space at locations that Confirm with enter are near the average normal standing or seated height of human ears The recommended pe riod is 20 seconds or longer The XL2 TA measures all noise curve types at the same time thus you can change the selec tion also after the measurement 114 Noise Curves INTi AUDIO e Press start Dm e Select the memory menu with the rotary wheel amp 3 and confirm with enter ihi LAY Ast 15 55 g He 2Aa FOLGER NEH PIR Tee ihl LAROH ASD 15 53 9 abe manual _ co oo LEI PET gt o He 2008 3100 H SIL 2 NTT eq o i i z 40 Load Test HC ES fel SA2r4HevTE FREE So m Hc So eg 40 HCS ag HCS Hc 40 E E se oui ony be ao 30 Hc 35 iB 125 ik Bk Hc 30 Live lew SET 20 Hees HOLD LIHIT KEY ent aga E E E tung ey HE20 1E 125 ik Bk Live lew p SET H LD LIHIT KEY COT Ge g e Press enter to store the test results or select Save Screenshot to generate a screensh
170. s the typical power sockets in Austra lia 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 TA and generates ICP power supply for alternative micro phones 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 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 TA 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 held instruments cables and connectors NTi Audio 600 000 334 This mechanical adapter piece mounts the XL2 TA on a microphone stand Adapters for 3 8 or 5 8 stands are included NTi Audio 600 000 372 Further Information INTi AUDIO The Battery Charger efficiently recharges the spare battery whilst you are using your XL2 TA 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
171. 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 TA automatically extracts and measures the fre quency of the fundamental signal The XL2 TA 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 p The input signal is balanced The signal is unbalanced The level at pin 2 is higher than at pin 3 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 1 1 PLEN EKSH TINS LYLAHS Fa F Volume 6A EL B LI DANOONOOEN OTONI THO B0 OdE 80 Fre Hotch PREN 1 0000 kHz Audio Analyzer INTI AUDIO 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 Additionally press enter Y Volume 8 dE DUODAN TONETOM B0 IdE 80 Fost Hotch e g using a 100 Hz sine test signal connected to the XL2 TA input with the 100 Hz main fre quency filtered by the notch filter the complete frequency spectrum is available at the speaker
172. sensor detection ASD is con nected The XL2 TA reads the electronic data sheet of the microphone and switches the 48V phantom power automatically on Phantom power is switched off Select the measurement unit as follows 1 12 Octave Tolerance INTi 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 LAl Bi ast izz S Max dE iriz OCT a Live CA2dB 12 20Hz T dB Sound level in dBSPL This measurement unit is permanently selected upon connecting a NTi Audio measurement mi crophone with electronic data sheet dBu Input level in dBu dBV Input level in dBV V Input level in Volt Volume 4 606 UNUUUANANOUUAANUUUHI B0 OdE 80 Boe Bondpass ib E e250 IMAM 40 pHGE ido Caacs i 101 INTi AUDIO 1 12 Octave Tolerance The XL2 TA 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 TA e Switch on the XL2 TA e Position the XL2 TA at the measurement location using a mi crophone stand or tripod e Select the 1 12 Oct Tol function in the measurement menu The displayed wideband and spectral levels are measure
173. 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 speaker cabinet Therefore the polarity detailed result page of the XL2 TA displays the measured polarity of the individual oc tave bands trom 125 Hz to 8 kHz This allows in depth verifica tion 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 TA for polarity measurements This selec Mic tion disables the rear speaker _ E XLR Measure the acoustic polarity with a measure a 10 Input m
174. sistant 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 211 INTi AUDIO Specifications Audio Analyzer Level RMS Real Time Analyzer RTA Frequency THD N Total Har monic Distortion Noise Scope Filter 212 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 Resolution 3 digits dB scale 5 digits linear scale or 6 digits x1 scale Following measurement functions offer audio spec trum in Volt dBu and dBV e Sound Level Meter e FFT e 1 12 Octave optional e Range 9 Hz to 21 3 kHz e Resolution 6 digits e Accuracy lt 0 003 e Range 100 dB to 0 dB 0 001 to 100 e Minimum level gt 90 dBu e Fundamental frequency range 10 Hz to 21 3 kHz e Measurement bandwidth 2 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 weig
175. spectrum is superimposed on a family of NR contours the NR of the spectrum corresponds to the value of the first NR contour that is entirely above the spectrum in accordance with ANSI S12 2 2008 and 1995 The NC rating of a spectrum is designated as the value of the highest NC curve touched by the measured octave band spectrum The designating number for any NC curve is ap proximately its speech interference level SIL the average of the levels in the 500 1000 2000 and 4000 Hz octave bands The XL2 TA Analyzer includes any tangency method adaptation as applicable in accordance with ANSI S12 2 2008 The RNC method is used to determine noise ratings when the noise trom HVAC systems at low frequencies is high and which is also Suspected of containing sizeable fluctuations or surging It essentially represents a rumble criterion The RNC curves also provide a procedure that reduces the result essentially back to the NC curves when systems are well designed and acoustically well behaved Following the RNC specification the XL2 TA measures the octave band sound pressure level every 100 ms followed by processing to determine the applicable room noise criterion RNC curve The minimum measurement time is 20 seconds INTi AUDIO Noise Curves in accordance with ANSI S12 2 1995 The RC criterion curves are a system for use in the design of heating ventilating and airconditioning HVAC systems in office buildings d
176. starting a new measurement Possible causes for exceeding measurement ranges are 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 select the next higher measurement range or reduce the input signal level as ap plicable e The input level is near the maximum level of the connected NTi Audio measurement microphone Sound Level Meter Meee es LA OG ast 13 24 g 4444 dB LAeq A Ts m LcPeak YY YY B MU RE g SET m 2 ot 10 ANGE 210 cT oon in SLHeter FAB SLAR Gl ast 13 24 S Lerma dE i3 OCT as LAFliwe Laadi 1 88kHz BO 40 20 alll 5 3 20 250 ank M OVR gg SET 10 RHGE 110 CHT as INTi AUDIO 33 INTi Sound Level Meter AUDIO The XL2 TA 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 TA e Switch on the XL2 TA e Position the XL2 TA at the measurement location using a mi crophone stand or a tripod e Select the SLMeter function in the measurement menu and toggle with page to the numeric result page z3 All wideband and RIA levels are measured and logged simultaneously You select which sound levels should be displayed 34 This example describes the setting of the commo
177. surement of the moving sound level over time Leq with A weighting frequency and F weighting time responses the param eter xx is userdefined from five seconds up to one hour Four individual levels can be configured e g 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 INTi AUDIO 235 INTi AUDIO LAeq60 K1 LAFmax LAFmax dt LAFmin 236 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 manually set in the page KSET of the sound level meter function Application Measurements in accordance with SLV SPL with A frequency weighting and F time weighting compen sating for human hearing perception at lower sound pressure lev els applicable at levels lower than 100 dB Measures the maximum environmental noise level during the measurement period Maximum level of the preset logging interval in the LOG menu e g 1 second Measures the minimum environmental noise level during the measurement period AJ FJ LAFmin dt LAFxx Appendix Minimum level of the preset logging interval in the LOG menu e g 1 second The sta
178. t sound source The XL2 TA Ana lyzer preserves the original absolute test signal level in the re corded wav file The XL2 TA 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 49 INTi Sound Level Meter AUDIO The event function is available with the XL2 TA Extended Acoustic Pack Option The XL2 TA Analyzer may be configured to record wav files and additional noise levels only when trig gered instead 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 key press using the XL2 TA Input Keypad 50 The XL2 TA event feature offers the following functionalities e Automated eve
179. t the NTi Audio Test CD into the CD Player and start track 1 which is the 1 kHz test signal e Connect the XL2 TA 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 TA 130 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 in 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 TA 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 The XL2 TA offers a comprehensive audio analyzer Broadband or wideband measurements are offered by the measurement functions RMS THD N and Oscilloscope The following measurement functions offer detailed analysis of the audio spectrum in Volt dBu and dBV e SLMete
180. t 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 06 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 TA 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 174 The straight forward
181. t utilizes VoiceNote Microphone The XL2 TA uses the internal VoiceNote micro phone to measure the acoustic delay Do not connect any measurement microphone to the XL2 TA for the delay time measurement 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 Measurement Position Do not position the XL2 TA too close to reflect ing surfaces such as walls or floors The reflec tions are likely to prevent accurate measure ments 95 aNTi 1 12 Octave Tolerance The Spectral Limits Option extends the XL2 TA 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 High resolution RTA function 1 12 Oct Tol with select able 1 1 1 3 1 6 and 1 12 octave spectral resolution Capturing of multiple readings into the internal memory 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 Export and import of tolerance and capture files Frequency band listening at rear speaker 96 PA rental Verifying the frequency response of returned speake
182. t 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 In case the SD Card is full you can insert the original spare SD Card into the XL2 TA and continue with the measurements The XL2 TA generates the projects and system folders au tomatically 165 INTi Data Management AUDIO 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 C L2_S 5 SLMeter MEEDE EEE Logging On Interval dt OPDELE The folder Projects contains subfolders with the stored Add Spectra Ho measurement resu
183. the main menu 142 If you have two or more XL2 TA 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 TA to the PC e Copy paste the profile called MyFirstProfile to the PC Profiles INTi AUDIO e Connect another XL2 TA 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 TA Ana lyzer with activated options to another XL2 TA Analyzer without options then these options have to be hidden prior to storing the profile for export e n the exporting XL2 TA system menu select the Individual option and toggle with enter to Hidden Store the profile in the XL2 TA Analyzer 143 INTi Profiles AUDIO The XL2 TA can store up to 20 individual profiles in the internal secured system memory and offers three different profile types profiles Types Description Factory The XL2 TA includes factory default profiles default which are marked with in the beginning of profiles the file name Sample filename DIN15905 5 prfs The
184. 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 5 The statistical distribution of sound pressure levels is commonly used for environmental noise analy sis such as road traffic or community noise as sessments For example LAFxx Is the noise level exceeded during xx of the measurement period e g LAF90 is the noise level exceeded during 90 of the measurement period Please see the specitications at chapter Technical 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 for 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 Appendix INT AUDIO Te Time average Clock lmpulse Maximum Level Z Taktmaximalpegel LAFT3eq In accordance with Overall sound pressure level all sound signal com DIN 45645 1 ponents are included required for special applica tions Clock Ilmp
185. tic consultants Supported operating systems and noise measurement professionals XL2 Data Explorer pro Windows XP SP3 vides a convenient way to view analyze and manage data and Windows Vista SP1 or later quickly creates customized reports e Windows 7 8 Hardware requirements Features of the XL2 Data Explorer software e Pentium 1 GHz or higher with 512 MB RAM or more e Data visualization e Minimum free disk space 2 GB e Fast zoom and pan e Video board with shader model 3 0 or higher e Audio playback synchronized to graph e GPU with DirectX9 0 c e Markers with on the fly calculations e Visualization of recorded events e Customized Reporting Download the software at the XL2 Support Page http my nti audio com The data import requires the Data Explorer Option installed on the XL2 TA 182 Fle View ji Markers Help XL2 Data Explorer RAR R o amp BY Gene 17 Jan 11 55 00 17 Jan 11 55 00 17 Jan 11 55 00 XL2 A2A 02868 D2 2 70 12 00 00 12 00 00 12 00 00 12 05 00 12 05 00 Helicopter 12 10 00 12 10 00 12 10 00 12 15 00 12 15 00 6o W AGc oaB Cursor Position 17 Jan 12 16 05 Time Resolution 0 00 05 LAeq_dt 62 2 dB Project Result Start 17 Jan 11 52 48 End 17 Jan 12 17 48 Duration 0 25 00 LAFmax 78 2 dB f 1000 Hz LZeq 56 0 dB 20 63 250 1K 4K Start 2014 01 17 11 52 50 End 2014 01 17 12 17 50 Samples 301 15 000 183 INTi XL2 Projector
186. tistical distribution of sound pressure levels is commonly used for environmental noise analysis such as road traffic or com munity noise assessments For example LAFyx Is the noise level exceeded during xx of the measurement period e g LAF90 is the noise level exceeded during 90 of the measure ment period Sound Level dB vs Time 90 4 LAF10 88 8dB LAeg 84 2dB 80 LAF50 76 4dB 707 LAF90 66 6dB 60 Time seconds nore gt 307 gt Lofft INTi AUDIO 237 INTi AUDIO Lceq LCpeak LCpeak max LCpeak max at LCpeak k2 238 Appendix Averaged sound level over time with C frequency weighting Sound pressure level with C frequency weighting and peak time weighting Measures the peak level High peak levels can dam age the human hearing Maximum sound pressure level with C frequency weighting and peak time weighting Measures the peak level High peak levels can damage the human hearing Maximum peak sound pressure level with C frequency weighting of the preset logging interval in the LOG menu e g 1 second 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 functi
187. 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 TA Input Keypad offers four marker keys to trigger an event recording or categorize any noise during measure ments Requires the optional Extended Acoustic Pack NTi Audio 600 000 384 201 INTi AUDIO 202 Further Information The XL2 TA Audio and Acoustic Analyzer controls the external Stack Light via the Digital I O Adapter Box The light has three lamp sections colored green or ange 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 TA Spectral Limits Op tion NTi Audio Stack Light 600 000 382 Digital O Adapter Box 600 000 381 The precision calibrator is used 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 Protect your M2230 microphone from wind rain and perching birds with this professional outdoor microphone protec tion kit Ideal for semi permanent unsu pervised outdoor installations F
188. topped Curr Level 64 9dB HOnITOR Event count HABE INTi AUDIO 51 INTi Sound Level Meter AUDIO Event D Event Duration N WY JN WY a Level dB key press Ne key press 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 key press e Retrigger with every repeated key press within the event duration 52 BiG Et LAR E i ast 13 52 S Trigger Events on est 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 on level Events are triggered at noise levels above the above preset value 2 for the start duration 3 onlevel Events are triggered at noise levels below the below preset value 2 for the start duration 13 on ext Events are triggered by external key press key press 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
189. ts or components which would limit the operational environment Refer IEC61672 1 paragraphs 6 5 2 9 2 7 Heavy electrostatic discharges directly to the instrument s connector or keyboard may interrupt the operation The XL2 TA either switches off or freezes at the last valid measurement value In such a case re start the instrument If the data logging had been active prior the interrupt the log file may contain a gap However the acquired results can be identified correct ly as each one is saved together with its own individual time stamp Refer IEC61672 1 paragraphs 6 6 1 9 2 7c The sound level meter complies with the requirements of the standard EC61672 1 2003 regarding immunity against high frequency fields or mains power fields from 50 to 60 Hz If the device is exposed to electromagnetic fields of 10 V m the measurement of sound levels below 74 dB is not speci fied If the electromagnetic fields exceed 10 V m the exposed instrument Is not specified in any level range Refer EC61672 1 paragraphs 6 6 3 9 30 The device has the greatest susceptibility to AC power fre quency fields if the direction of the magnetic field is the same as the orientation of the microphone axis The device has the greatest susceptibility to radio frequency fields if the surface normal of the display and the direction of the incoming radio frequency field are parallel to each other INTi AUDIO Appendix Refer EC61672 1 paragraph
190. ty 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 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 Io 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 RI60 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 res
191. ual Lea Lmin Lmax LCpeak e Gliding LAeg with selectable time window from five seconds to one hour e All measurement results simultaneously available e Correction value measurement wizard 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 1 1 octave band 8 Hz 16 kHz e 1 3 octave band 6 3 Hz 20 kHz e evel resolution 0 1 dB e Measurement Units Volt dBu dBV and dBSPL e Band pass filters base 2 conform with IEC 61260 class 1 ANSI 1 11 2004 class 1 e Wide band levels simultaneously 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 Enables the import of measurement data into the XL2 Data Explorer software e Powerful data processor for easy and fast analysis of sound level measurement data on PC Specifications Functions of Extended Acoustic Pack optional INTi AUDIO e SLMeter RTA function Recording of linear wav files 24 bit 48 kHz Percentiles for wide band 1 1 and 1 3 octave spectrum Flexible setting from 1 to 99 Sampling every 1 3 ms Wid
192. ulse 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 gt lt 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 233 INTi AUDIO Display LAE LAeq L Aeq dt 234 Appendix Application Setting The sound exposure level LAE Is the LAeq normalized to 1 sec AJ E 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 Averaged sound level over time with A frequency weighting Level of the preset logging interval in the LOG menu e g Log ging Interval 1 second then LAeq_dt is the time averaged level of the past 1 second LAeq k1 LAeqxx Appendix 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 Mea
193. ults 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 17 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 dif ferent on off times are offered by the NTi Au dio Test CD included with the XL2 TA 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 TA should measure the reverber ation 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
194. urves also includes an extended frequency range somewhat mitigat ing the original reasons for PNC 108 Tee LA E j asd 15 05 g HC 2808 32500 Hz SIL 27 Lea 3E 50Hz r AO i HE10 a HC BD Hc S50 aa HCHO n ih He 20 iG 125 ik Bk Live Wien E SET Do Da su HOLD LIHIT KEY mea EEE eee Ini LAR Gl ast 17 06 S Large fluctuations HO CRITERIA 16 431 5 64 125He2 LPF imax beg aoe aed OB 13 LIHIT 1 0 5 0 LzFi Lzeq L8dB 2 6 dE LIHIT 3 5 3 0 P RHC correction KLFC K125c Tao dE 4 dE The RNC information page is available at the noise curve types Noise Criteria and Room Noise Criteria in accordance with ANSI S12 2 2008 It reports any large fluctuations or surging at low frequencies e g caused by fans Noise Curves INTi AUDIO Selection of the noise curve type and measurement re Sult Noise Curve Types e Noise Rating NR e Noise Criteria NC 2008 and 1995 e Room Noise Criteria RNC e Room Criteria RC 1995 e Preferred Noise Criteria PNC 1971 Measurement Result The noise rating of a spectrum is designated as the value of the highest curve touched by the measured octave band spectrum The octave band in which this touching occurs is noted along with the curve designation 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 In the automatic curso
195. using and ensures a high measurement accuracy in accordance with the standards IEC 61672 and ANSI 1 4 e XL2 TA 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 Measure ment Ranges with different microphones Linear Mea surement Range acc IEC Gilley 27 ANSI 1 4 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 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 TA 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 simultaneous e Time weighting Fast Slow optional Impulse simultaneous e XL2 TA M2230 17 dB e XL2 TA M2215 25 dB e XL2 TA M2211 21 dBi e XL2 TA M4260 29 dB 138 dB 163 0B 144 dB 144 dB DEPE e XL2 TA M2230 24 dB A 138 dB 27 dB C 138 dB e XL2 TA M2215 33 dB A 153 dB e XL2 TA M2211 29 dB A 144 dB e XL2 TA M4260 35 dB A 144 dB typical micropho
196. ust 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 197 INtTi Further Information AUDIO oi ee oO a Mle AUDIO Power On XL2 Mass storage Open XL2 TA htm Activate option Login http my nti audio com 198 Further Information INTi AUDIO Insert License number Get Activation Key aji Computer amp os C xt2 NTi Audio XL2 E B Projects XLZ_syS 4 Elemente XL2 Download activation file and copy to XL2 TA xx_Oxxxx txt 199 INTi 200 AUDIO Calibration Certificate Further Information 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 NTi Audio 600 000 018 The Everready Pouch protects the XL2 TA during transport and operation With its convenient belt clip the XL2 TA can be kept close by for those tasks requiring both hands The Everready Pouch allows operation of the XL2 TA while fitted in the pouch NTi Audio 600 000 335 Mains Power Adapter the XL2 TA Audio and Acoustic Analyzer with removable plug types The Mains Power Adapter suit
197. ve 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 20 kHz 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 14 15 Actual sound level with time weighting F Fast A Z Broadband sound pressure level without any fre You may select any frequency to read out individual levels A weighted broadband sound pressure level quency weighting The selected frequency is indicated by the cursor arrow Choose between the following settings A ial 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 Sound Level Meter INTi AUDIO The cursor read out may be set manually to any 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 43 Set the RTA result display to 1 1 octave or 1 3 octave band resolution as follows e Turn the rotary wheel 3 to select the parameter 7 e Press enter to
198. 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 System Settings INTI AUDIO After starting the scheduled measurement the XL2 TA waits for the next scheduled start date and time The instrument but tons 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 TA is powered off and on again during this time then the XL2 TA Analyzer restarts in the Scheduler func tion and continuous the countdown This applies also for any interruption 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 163 INTi Data Management AUDIO The XL2 TA stores all acquired measurement data including real time information onto the 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 FOLD
199. welling units etc where the desired mid frequency levels are in the range of 25 to 50 dB Each RC crite rion curve bears a rating number equal to the level at 1000 Hz Spectrum classification e Neutral spectrum N The levels at 500 Hz and below do not exceed the RC curve corresponding to a sound level spec trum by more than 5 dB and the spectrum levels in Band 1000 Hz and higher do not exceed the corresponding RC curve by more than 3 dB Rumble R Excessive noise in low frequency band The level in one or more of the octave bands at and below 500 Hz exceeds the RC curve corresponding to a spectrum by more than 5 dB Hiss H Excessive noise in high frequency bands The level in one or more of the octave bands at and above 1000 Hz exceeds the RC curve corresponding to a spectrum by more than 3 dB Vibration and rattle RV The level in one or more of the oc tave bands from 16 Hz through 63 Hz exceed the criterion for moderately noticeable rattle 107 INTi Noise Curves AUDIO in accordance with ASA 1971 PNC curves represent a more stringent method based on an extension of the basic Noise Criteria system They have been used in the past to judge the acceptability of ventilation and other background broadband noise PNC curves are less often used than Noise Criteria curves because they are more strin gent at lower frequencies than the Noise Criteria curves but also because the latest 2008 version of Noise Criteria c
200. y the frequency ously after starting a measurement with start Dal band with the highest noise rating The actual measurement time is shown e Select the frequency with the rotary wheel Press enter t i e You may readout any individual frequency Automatically stops the measurement after the e Return to auto frequency with enter pre set measurement time e Set the required measurement time e Start the measurement gt m HA The cursor read out may be set manually to any frequency band or wide band level The read out re mains at the selected frequency e Select the frequency with the rotary wheel 10 Press enter Adjustment of preset measurement time for the timer e Select the frequency of interest mode single Confirm with enter 111 INTi Noise Curves 112 AUDIO The speech interference level SIL result is shown at noise curve types NC 2008 and NC 1995 1 It is calculated by averaging the octave band sound pressure levels at 500 Hz 1000 Hz 2000 Hz and 4000 Hz If the measured spec trum in any octave band does not exceed any of the octave bands of that NC SIL curve the spectrum is designated NC SIL If one or more octave band levels exceed the NC SIL curve then the NC curve number may differ to the SIL value as the NC rating for that spectrum must be de termined using the tangency method This reports any large fluctuations at low frequencies for the Room Noise Criteria RNC in accorda
201. ycle starts automatically 9 for 30 minutes The 30 minute cycles repeat until This field offers two functions the measurement is stopped e Symbols for measurement results 15 The measurements in the synchronized repeat timer mode start exactly on the half or full hour in Upper RTA parameter displayed as line accordance with DIN 15905 lx Lower RTA parameter displayed as bargraph Adjustment of preset measurement time for single and re peat timer setting 29 INTi Sound Level Meter 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 TA 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 to capture the reading e Select the upper RTA parameter 15 and choose Capt Confirm with enter 10 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 30 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 s to select the Y axis range Confirm with enter Real time analyzer results in 1 1 octa

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