Specifications

XL3 Acoustic Analyzer
All specifications are according to the IEC61672 standard.
Other standards are listed the corresponding specifications.

Sound Level Meter• XL3 + M2230 Microphone
Certified
Product Con- • XL3 + M2340 Microphone
figurations
These configurations form an integrating soundClass 1level meter with type approval in accordance withclass 1 requirements of IEC 61672 and ANSI S1.4
for operation with the microphone attached, themicrophone detached using the ASD cable and theoptional Weather Protection WP30.
Product Con- • XL3 with M2211 or M2215 microphone
figurations
Class 1 frequency response in accordance withClass 1
IEC 61672 and ANSI S1.4
Product Con- • XL3 with M4261 microphone
figurations
Class 2 in accordance with IEC 61672 andClass 2ANSI S1.4

1

Conforms
withstandards• IEC 61672:2013, IEC 61672:2003,
IEC 61260:2014, IEC 61260:2003,
IEC 60651, IEC 60804, IEC 61183• SMPTE ST 202:2010, ISO 2969:2015• China: GB/T 3785:2010, GB/T 3241
• Germany: DIN 15905-5, DIN 45657:2014, DIN
45657:2005, DIN 45645-1, DIN 45645-2• Japan: JIS C1509-1:2005, JIS C 1513 class 1,
JIS C 1514 class 0• Switzerland: V-NISSG• UK: BS 4142:2014, BS 5969, BS 6698
• US: ANSI S1.4:2014, ANSI S1.43, ANSI S1.11:2014,
ANSI/ASA S12.60• International IEC standards are adopted as European
standards and the letters IEC are replaced by EN.
XL3 conforms to these EN standards.
• WELL Buildings, LEED Green Building• FGI Facility Guidelines InstituteSpecifications

Level
Details• Sound pressure levels live, Lmin, Lmax, Lpeak,Leq, Lp• Gliding LAeq_gx and LCeq_gx with selectable
time window x from one second to one hour(= sliding Lyeq_gx with y= A or C)• Clock-Impulse Maximum Level (TaktMax) in accordance with DIN 45645-1 and DIN 45657• Level difference LCeq-LAeq, LAFT5eq-LAeq• Frequency weighting: A, C, Z (simultaneous)• Time weighting: (simultaneous)» Fast, Slow
» Impulse (optional with Extended Noise Measurement Option)• All measurement results simultaneously available• Single measurement range• Level resolution: 0.1 dB• Logging: 1 second, 0.1 second (optional)• Correction value measurement wizard based on
LAeq, LCeq and LCpeak• Noise exposure level LEX with post-processing• Logging all data or subsets in selectable intervals• Selectable level limits• Voice notes (planned)• Measurement bandwidth (-3dB): 4.4 Hz - 23.0 kHz• Internal noise: 1.3 µV A-Weighted

StabilizationTime< 10 seconds

Integration
Time• Minimum: 1 second• Maximum: 100 hours minus 1 second

Audio
Recording• Default» Recording of compressed wav-files(ADPCM - 4 bit, 12 or 24 kHz)
» a new wav-file starts every 12 hours(max. wav-file size 512 MB)» Bandwidth: 2.0 Hz - 10.2 kHz• Optional: Extended Noise Measurement Option» Recording of linear wav-files» Resolution 24, 32 bit @ 12, 24, 48, 96 kHz» a new wav-file starts every 1 hours(max. wav-file size 512 MB)» Bandwidth: 2.0 Hz - 23.6 kHz• Audio files include meta data (scaling, time, ...) in
Broadcast Wave Format BWF according to EBUTECH 3285

Measurement
Ranges withdifferent
microphones• XL3+M2230: 17 dB(A) - 137 dB• XL3+M2340: 18 dB(A) - 138 dB• XL3+M2211: 21 dB(A) - 144 dB• XL3+M2215: 25 dB(A) - 153 dB• XL3+M2914: 6.5 dB(A) - 100 dB• XL3+M4261: 27 dB(A) - 146 dB@ typical microphone sensitivity

Linear Measurement
Range acc.
IEC61672 /ANSI S1.4• XL3+M2230: 24 dB(A) - 137 dB, 27 dB(C) - 137 dB• XL3+M2340: 25 dB(A) - 138 dB, 28 dB(C) - 138 dB• XL3+M2211: 29 dB(A) - 144 dB• XL3+M2215: 33 dB(A) - 153 dB• XL3+M2914: 13.5 dB(A) - 100 dB• XL3+M4261: 33 dB(A) - 146 dB@ typical microphone sensitivity

2

Specifications

Residual
noise in [dB]@S=
42 mV/Paof XL3
without
measurement
microphone

Frequency
weighting

Leq

Lpeak

A

4

17

C

3

16

Z

7

20

Reverberation Time RT

Acoustic Analyzer
Spectrum3• Sound pressure levels live, Leq, Lmin, Lmax
• 1/1 octave band display: 8 Hz - 16 kHz• 1/3 octave band display: 6.3 Hz - 20 kHz• Zoomable X-Axis for reduced number of frequency
bands• Broadband levels A/Z simultaneously• Level resolution: 0.1 dB• Logging: 1 second, 0.1 second (optional)• Band pass filters (base 10) conform with class 1 of
IEC 61260:2014 and ANSI S1.11-2014» 1/1 octave spectrum: > 16 Hz band» 1/3 octave spectrum: > 16 Hz band

• Conforms with ISO 3382 and ASTM E2235• 1/1 octave band display: 63 Hz - 8 kHz• 1/3 octave bands results from 50 Hz - 10 kHz (optional with Room Acoustics Measurement Option)• Measurement parameters: T20 or T30• Automatic position averaging of decays• Range: 10 ms - 30 seconds• Minimum reverberation time (typical)
Frequency [Hz]@ 1/1 [s]@ 1/3 [s]6.3 - 100.33

< 0.8012.5 - 200.17< 0.5025 - 400.09< 0.3050 - 800.05< 0.15100 - 500

< 0.03< 0.10> 500< 0.01< 0.01• Measurement based on Schroeder backward integration• Test signal: Impulse source or interrupted pinknoise generated by the MR-PRO, MR2 or DS3
API Programming(optional)• Control, configuration & data retrieval• Noise data and audio streaming• Weather and state-of-health data

Specifications

Functions ofExtended
Noise Measurement
Option(optional)• Sound Level Meter / Spectrum function» Recording of linear wav-files (24, 32 bit @ 12, 24,
48, 96 kHz); a new wav-file starts every 1 hourfs [kHz]

Resolution

GB/day

96

32

30.9

96

24

23.2

48

32

15.4

48

24

11.6

24

32

7.7

24

24

5.8

24

4

1.0

12

32

3.9

12

24

2.9

12

4

0.5

• Percentiles for wide band, 1/1 and 1/3 octave
spectrum» Flexible setting from 0.1% to 99.9%» Sampling: every 1.3 ms» Broadband: in 0.1 dB wide classes, based on
sampling Lxy (x= A, C or Z, y= F, S or EQ1”)» 1/1 and 1/3 octave spectrum: in 1.0 dB wideclasses, based on Lxy (x= A, C or Z, y= F or S)» Dynamic range: 140 dB• Sound Exposure Level LAE• 100 ms logging (broadband & spectrum)• Time weighting: Impulse(LxI, LxIeq with x= A, C, Z)• Level difference LAIeq – LAeq
• Event-triggered audio and data recording (planned)
Functions ofExtended
Room
Acoustics
Measurement Option(optional)• Reverberation time function» Reverberation time in 1/3 octave resolution» Early Decay Time EDT, T15» T30, T20, T15, EDT simultaneously» Adjustable trigger level» Automatic room average of multiple positions» Audio Recording (24 bit @ 48 kHz)» Decay curve (planned)

Functions ofSound Insulation Option(optional)• Standards ISO 16283 and ISO 717• Airborne sound insulation• Results shown on XL3• Averaging of source and receiving room
• Results D, D’n, D’nT, R’• Chart and table• Flatness verification of adjacent one-third octave
bands in sending room
• Impact and facade sound insulation• ASTM E336 (US), Document E (UK)4

Specifications

STIPA
SpeechIntelligibility(optional)

5• Measurement in accordance with the standards» IEC 60268-16 (edition 2, 3, 4 or 5)» AS 1670.4» BS 5839-8» CEN/TS 54-32:2015» DIN EN 50849:2017» ISO 7240-16» ISO 7240-19:2007» DIN VDE 0833-4» VDE V 0833-4-32:2016» VDE 0828-1:2017-11» NFPA 72» UFC 4-021-01• Direct measurement method (IEC 60268-16)• Frequency range: 125 Hz - 8 kHz in octave band
• Modulation frequencies 0.63 Hz - 12.5 Hz in
thirdoctave resolution• Single value STI and CIS test result• Ambient noise correction• Automated averaging of measurements• Modulation indices and individual band level results with error indicator• Test signal: NTi Audio STIPA signal generated by
the MR-PRO, NTi Audio TalkBox or other audio
players (download wav-file atmy.nti-audio.com/support/xl3)

Reporting and Analysis Software
Data
Explorer(optional)• Enables the import of measurement data into the
Data Explorer software• Powerful data processor for easy and fast analysis
of sound level measurement data on PC

Sound
Insulation
Reporter(optional)• Enables the import of noise spectrum and reverberation time measurement data in 1/3 octave
band resolution into the Sound Insulation Reporter
software• Software provides all tools for fast data analysis
and standardized reporting of airborne, impact andfacade sound insulation measurements on PC• Standards ASTM E336, ASTM E413, ASTM E1007,
ASTM E989, ASTM E966, ASTM E1332, BB93,
DIN 4109, Document E, GB/T 19889, ISO 16283,
ISO 140, ISO 717, ISO 10140, NEN 5077:2019,
SIA 181:2006, SIA 181:2020

Room
Acoustics
Reporter(optional)• Frequency response spectrum and Noise Curves• Room acoustic simulation according to Sabine or
Eyring• Import of own sound absorber database and tolerances• Standards GB 50371, IEC 61260, ANSI/ASA S12.22019, DIN 15996:2020, ISO R 1996-1971, ASR
A3.7:2021, DIN 18041:2016, ISO 3382-1:2009,
ISO 3382-2:2008, ÖNORM B 8115-3:2015, ASTM
C423-17, ISO 354:2003

Specifications

Calibration

Input / Output Interfaces

Free-field
Correction• NTi Audio Class 1 Sound Calibrator» M2230: -0.1 dB» M2340: -0.1 dB» M2211: -0.1 dB» M2215: -0.1 dB• NTi Audio Class 1 Sound Calibrator with
1/4” Calibration Adapter, type ADP 1/4-P» M4260: +0.1 dB» M4261: +0.2 dB

Wind Screen
Correction• 50 mm Wind Screen: +0,12 dB• 90 mm Wind Screen: +0,19 dB• WP30/WP61 Wind Screen 90 mm: +0,19 dB

Calibration• Recommended calibration interval: one year
• Microphone calibration with external calibrator
supported• Optional calibration certificate for new instruments available

Microphone
Input• XLR balanced» Input impedance = 192 kOhm
» Phantom power: +48 VDC switchable with maximum 10 mA supply current in accordance withIEC 61938» Automated sensor detection for NTi Audio’s ASD
measurement microphones and pre-amplifiers• Level range: -112 dBu to +48 dBu• Dynamic range: 160 dB• Frequency range: 1 Hz to 40 kHz• THD (Total harmonic distortion): - 110 dB

Network• Wi-Fi integrated (2.4 GHz)• LAN via USB adapter• USB-C as host or slave, USB-A as host
• Data and website access via USB• Web server, ftp, ntp• 4G/5G via optional external gateway• Remote access connect.nti-audio.com(optional for more than 2 GB/month)

Audio
Outputs• Built-in speaker• Headphone connector 3.5 mm Minijack, stereo

Digital I/O

Connection interface to accessories• SDI-12 and 1-Wire• M8 Connector, 4-pole» pin 1 ground» pin 2 SDI-12» pin 3 mains power supply of XL3 (switchable)» pin 4 1-Wire(prepared for later firmware extension)

6

Specifications

Memory• SD Card included (32 GByte), removable, storingmeasurement data in ASCII format, screenshots
and wav-files• Supports external hard disk (not included)
Data logging every second offers following noisemonitoring periods:• Logging default noise levels: > 8 years• Additional logging of 1/3 octave data: > 2 years• Additional» compressed audio recording: > 4 weeks» linear audio recording: > 60 hours
Larger SD Cards may be used for longer monitoring
requirements

7

Power
Supply• Rechargeable & removable Li-Po battery included» Model no. PA-L2485.R001» Type 3.6 V / 6.7 Ah / 24 Wh» Typical battery lifetime > 8 hours @ display on» Typical battery lifetime > 12 hours @ display off» Typical charging time (10% ->80%): 2.5 hours» Typical life time charging cycles: 800» In order to increase battery lifetime, the XL3
automatically limits the battery charging at 4.05V
which doubles the amount of charging cycles
compared to a typical lithium battery.
• Linear external power supply 9 VDC included» Range: 7.5 - 20.0 VDC @ minimum 6 Watt
» Charges Li-Po battery during operation» Connector C5.5 x 2.1 x 12 mm• USB-C power supply supported (not included)• External battery pack» 22 Ah battery pack: 8 days
» 44 Ah battery pack: 16 days

Specifications

GeneralScope of Supply

Clock• Real-time clock with lithium backup battery• Drift < 0.1 seconds per 24 hours• Synchronizable to PPS signal

Mechanics• Tripod or microphone stand mount 1/4”
• Wire stand mounted on rear side
• Display» 4.3” IPS color display with capacitive touch» 480 x 800 pixels• Dimensions (L x W x H)
» 210 x 85 x 45 mm» 8.3 x 3.3 x 1.8”
• Weight: 510 g (18 oz) including built-in Li-Po battery

Temperature-10 °C to +50 °C (14° to 122°F)

Humidity

5% to 90% RH, non-condensing

Static airpressure

65 kPa to 108 kPa

Susceptibility to radio
frequencies

Classification Group X

Electromagnetic Compatibility

CE compliant:
EN 61326-1 Class B, EN 55011 class B
EN 61000-4-2 to -6 & -11

Protection
Rating

IP51

ATEX• For applications in explosive atmospheres withinzone 2 in accordance with IEC 60079• Directive 2014/34/EU

XL3• XL3 Acoustic Analyzer• Battery Pack
• Mains Power Adapter• USB-C Cable• Hand strap

optional forconnectivity• LAN to USB-C adapter for LAN connection• 4G/LTE Gateway #600 076 011
for mobile communication

8

Specifications

Technical Data Microphones

Classification with XL3 according to IEC 61672, ANSI S1.4
Consisting of

M2230

M2340
(with self-test)

Class 1
CertifiedClass 1

PreAmplfier
MA220 + MC230
or MC230A
CapsulePreAmplfier
MA230 +
MC230A
CapsuleMicrophone Type

System Self-test (CIC)

Frequency Response
Class 1

MA220

MA230

-

with XL3

PreAmplfier
MA220 +
Capsule 7056

M4261 microphone withpermanently installed
capsule1/4” permanently installed

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+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

freely available as Excel-data, register product at my.nti-audio.com and contact info@nti-audio.com

Frequency Range

9

PreAmplfier
MA220 +
Capsule 7052

M4261
Class 2

1/2” detachable with 60UNS2 thread,type WS2F according IEC 61094-4

Flatness tolerance bands
typicalActual Frequency Response

M2215(high levels)

Omnidirectional, pre-polarized condenser,
free field microphone

Capsule / Transducer
PreAmplifier Type

M2211

5 Hz - 20 kHz

Residual Noise Floor typical

16 dB(A)17dB(A)

21 dB(A)25 dB(A)27 dB(A)Maximum SPL@ THD 3%, 1 kHz, S_typical

137 dBSPL

138 dBSPL

144 dBSPL

153 dBSPL

142 dBSPL

Specifications

M2230

M2340
(with self-test)

Sensitivity typical @ 1 kHz-27.5 dBV/Pa±2 dB(42 mV/Pa)

Temperature Coefficient< -0.01 dB / °C

Temperature Range
Pressure Coefficient

M2215(high levels)

M4261-34 dBV/Pa±3 dB(20 mV/Pa)-42 dBV/Pa±3 dB(8 mV/Pa)-36 dBV/Pa±4 dB(16 mV/Pa)< ±0.015 dB / °C

< ±0.02 dB / °C

-10°C to +50°C(14°F to 122°F)

0°C to +40°C(32°F to 104°F)-0.005 dB / kPa-0.02 dB / kPa

Influence of Humidity(non-condensing)-0.04 dB / kPa< ±0.05 dB

Humidity< ±0.4 dB

5% to 90% RH, non-condensing

Long-term Stability> 250 years / dB

Power Supply
Current Consumption typical

M2211

-

48 VDC phantom power
2.3 mA

0.8 mA

2.3 mA

1.7 mAElectronic Data Sheet

NTi Audio ASD in accordance with IEEE P1451.4 V1.0, Class 2, Template 27

Output Impedance

100 Ohm balanced

Connector

Balanced 3-pole XLR

Diameter Dimensions
Length Dimensions

20.5 mm (0.8”)
154 mm (6.1”)

Weight

150 mm (5.9”)
100 g (3.53 oz)

Environmental Protection
Windscreen Diameter

IP51
50 mm (2”)

Scope of Supply
NTi Audio #83 g (2.93 oz)

90 mm (3.5”)

33 mm (1.3”)

33 mm (1.3”)

33 mm (1.3”)

Windscreen, Microphone Holder with Adapter 5/8“ - 3/8“, Manual
600 040 050

600 040 230

600 040 022

600 040 045

600 040 070
10Specifications

Outdoor Measurement Microphones

Classification with XL3 according to IEC 61672, ANSI S1.4
System Self-test (CIC)

M2230-WP(M2230+WP30)

M2340-WP(M2340+WP30)

M4261-WP(M4261+WP61)

Class 1
CertifiedClass 1

Class 2

with XL3--

Windscreen Diameter

90 mm (3.5”)

Diameter Dimensions

36 mm (1.4”)

36 mm (1.4”)

36 mm (1.4”)

Length Dimensions

378 mm (14.9”)378 mm (14.9”)378 mm (14.9”)

Weight430 g, 15.17 oz

430 g, 15.17 oz

413 g, 14.57 oz

IP54 in vertical position

IP54 in vertical position

Environmental Protection

IP54 in vertical position

Mounting
Optional Pole Mount Adapter
NTi Audio #11Standard 3/8” tripod mount included• Pole Mount Adapter PM 1”
for pole diameter 25 - 33 mm (1-1.3”)• Pole Mount Adapter PM 1 1/4” for pole diameter 32 - 44 mm (1.25-1.75”)
600 040 050 + 600 040 060

600 040 230 + 600 040 060

NTi Audio # 600 040 067
NTi Audio # 600 040 068
600 040 070 + 600 040 080

Specifications

Typical Frequency Response of Measurement Microphones
M4261

M2230, M2340,
M2211, M2215

8
Tolerance
Class 1, IEC61672-1

6

Sensitivity relative [dB]

4

2

0

-2

-4

Tolerance
Class 2, IEC61672-1

-6

-8
5

10
10

20		

100				100

log frequency [Hz]

1000
1000

		

10000
10000

20000

(free field conditions @ reference direction 0°)

12Specifications

Linear Measurement Range
acc. IEC61672 / ANSI S1.4
(typ. microphone sensitivity)

13

XL3 + M2230: 24 dB(A) - 137 dB

XL3 + M2340: 25 dB(A) - 138 dB

XL3 + M2211: 29 dB(A) - 144 dB

XL3 + M4261: 33 dB(A) - 146 dB

Specifications

Free Field - Pressure Correction Factors
If a measurement microphone is held in a free-field environment, then the measurement microphone acts at high frequencies like a reflector. The sound pressure increases infront of the microphone capsule membrane. M2230, M2340,
M2211 and M2215 are free-field equalized measurement microphones, they compensate for the increased pressure internally. The calibration of the measurement microphones M2230
and M2340 with the B&K 4226 requires the accessory Adapter
Ring MXR01, NTi Audio # 600 040 105. Please note, nevertouch the diaphragm of the measurement microphone capsule.
The calibrator no longer offers free-field conditions. Therefore,
the free-field equalization of the microphone must be compensated. This needs to be considered prior the calibration. The
correction value needs
to be added to the pressure response​​of the microphone.
Example:• During the calibration, the XL3 measures the sound level inthe calibrator. If the B&K 4226 calibrator is used and it is set
to 16 kHz, then the XL3+M2230 reads just 86.7 dBA.
• The free-field sound level is calculated by summing the XL3
measurement value and the correction value (86.7 dB +7.3 dB = 94.0 dB).

The following corrections apply with the B&K 4226 calibrator:

NominalFrequency[Hz]

M2230,
M2340
with
MXR01
Adapter[dB]

M2230,
M2340
[dB]

M2211
[dB]

M2215
[dB]

Measurement
Uncertainty U
[dB]

31.5
63
125

-0.3
0.0
-0.2

0.0
0.0
0.0

-0.2
0.0
-0.1

0.0
0.0
-0.1

0.3
0.3
0.3

250
500
1000

-0.2
-0.2
0.0

0.0
0.0
0.0

-0.1
-0.1
0.0

-0.1
-0.1
0.0

0.3
0.3
0.3

2000
4000
8000

0.1
0.7
2.7

0.3
0.7
2.6

0.1
0.7
4.5

0.0
0.4
4.7

0.3
0.3
0.4

12500
16000

7.2
7.3

6.0
7.3

5.8
7.9

6.1
7.9

0.7
0.8

Correction values ​​for other calibrators for M2230 and M2340:
Type

Correction
Value

Calibration
Frequency

Calibration
Level

NTi Audio CAL200

-0.1

1 kHz

114 dB

B&K 4231

-0.2

1 kHz

114 dB

Norsonic Nor-1251

-0.2

1 kHz

114 dB

14

Specifications

Actuator Correction
The following free-field 0° incidence corrections apply forcalibration using a protection grid actuator (e.g. B&K UA033,
GRAS RA0014). Please note, never touch the diaphragmof the measurement microphone capsule. The maximum
DC bias for the actuator calibration is 200 VDC.

M2211, M2215
NominalFrequency
[Hz]

M2211
[dB]

M2215
[dB]

31.5
63
125

0.0
0.0
0.0

0.0
0.0
0.0

250
500
1000

0.0
0.1
0.1

0.0
0.0
0.0

2000
4000
8000

0.6
1.7
4.2

0.2
1.2
3.9

12500
16000

7.3
9.2

6.7
9.0

15

M2230, M2340
The calibration requires the accessory Actuator Grid, NTi Audio# 600 040 112. The Actuator Grid comes with an insulation ring
dedicated for this measurement method.
NominalFrequency [Hz]M2230, M2340
[dB]

<400

0.0

400
500
630

-0.2
0.0
-0.2

800
1000
1250

0.0
0.0
-0.1

1600
2000
2500

0.2
0.2
0.3

3150
4000
5000

0.8
1.0
1.6

6300
8000
10000

2.4
3.6
4.8

12500
16000
20000

6.5
9.3
11.7

Specifications

Diffuse-field Sensitivity Level Correction
A diffuse sound field is characterized by the sound arriving at
the receiver from all directions with more or less equal probability. The M2230, M2340, M2211, M2215 and M4261 are
free-field equalized measurement microphones. The default
frequency response refers to a 0° sound incidence. The diffusefield sensitivity level correction is calculated by averaging thedirectional characteristics in accordance with IEC 61183. The
corrections ​​for diffuse-field conditions are documented in thefollowing table and may be activated directly on the XL3; see
Spectral Corrections. The directional response of the M2230 is
described in the appendix.
Example:• The sound pressure level in a diffuse sound field shall be
determined. The display of the XL3 with the M2230 reads
80.0 dBA for the 20 kHz third-octave band.
• The diffuse sound level is now calculated from the sumof the XL3 measurement value and the correction value(80.0 dB + 5.9 dB = 85.9 dB).

The diffuse-field sensitivity level correction is
not necessary using a diffuse field equalizedmeasurement microphone.

NominalFrequency[Hz]1/2” Microphone
M2230, M2340,
M2211, M2215[dB]

1/4” Microphone
M4261

<63
63
80

0.0
0.0
0.0

0.0
0.0
0.0

100
125
160

0.0
0.0
0.0

0.0
0.0
0.0

200
250
315

0.0
0.0
0.0

0.0
0.0
0.0

400
500
630

0.0
0.0
0.0

0.0
0.0
0.0

800
1000
1250

0.0
0.0
0.1

0.0
0.0
0.1

1600
2000
2500

0.2
0.2
0.4

0.1
0.1
0.2

3150
4000
5000

0.6
0.8
1.3

0.3
0.3
0.5

6300
8000
10000

1.8
2.5
3.4

0.8
1.1
1.6

12500
16000
20000

4.4
5.3
5.9

2.2
2.8
3.4

[dB]

16

Specifications

Free-field and Diffuse-Field Sensitivity for M2230 and M2340
1100

idealized
free-field-1-1

sensitivity relative [dB]

-2
-2
-3
-3
-4
-4

diffuse
field

-5
-5
-6
-6
-7
-7
-8
-8

10
10

20		

100				100

log frequency [Hz]

17

1000
1000

		

10000
10000

20000

Specifications

Spectral Correction for horizontal Sound Incidents using the Outdoor Microphone
The outdoor measurement microphone fulfills the requirements of IEC 61672 and ANSI S1.4 for vertical sound incidence.
For compliance with horizontal sound incidence a spectral correction is employed in the associated XL3 Sound Level Meter.

Spectral Correction for horizontal sound incidents:
NominalFrequency
[Hz]

WP30
Weather Protection
[dB]

WP61
Weather Protection[dB]

1/3 Octave

1/1 Octave

1/3 Octave

1/1 Octave

<800

0.0

0.0

0.0

0.0

800
1000
1250

0.0
0.0
0.1

0.0

0.0
0.0
0.0

0.0

1600
2000
2500

0.2
0.3
0.7

0.4

0.2
0.3
0.8

0.4

3150
4000
5000

1.3
2.0
2.7

2.0

1.4
2.1
2.5

2.0

6300
8000
10000

2.9
3.3
3.9

3.4

2.3
2.4
2.8

2.5

12500
16000
20000

4.6
6.4
6.8

5.9

3.0
3.1
3.1

3.0

18

Specifications

Technical Data PreAmplifier
MA220 PreAmplifier
Microphone PreAmplifier
Frequency Range (-3dB)
Residual Noise Floor typicalFrequency Response Flatness

MA230 PreAmplifier
with self-test (CIC)

Compatible with 1/2” microphone capsules type WS2F in accordance with IEC61094-4
4 Hz - 100 kHz

1.3 Hz - 50 kHz

1.9 mV(A) at C_in 15 pF ≙ 5.6 dBA @ 42 mV/Pa

2.4 mV(A) at C_in 15 pF ≙ 9.1 dBA @ 42 mV/Pa±0.2 dB

Phase Linearity
Maximum Output Voltage@ THD 3%, 1 kHz
Electronic Data Sheet

Impedance±0.1 dB, 10 Hz - 20 kHz< 1° @ 20 Hz - 20 kHz
21 Vpp ≙ 7,4 Vrms ≙ 138,9 dBSPL @ 42 mV/Pa

22 Vpp ≙ 7,8 Vrms ≙ 139,3 dBSPL @ 42 mV/Pa

Containing user calibration data; default factory sensitivity = 4.9 V/Pa
Read/write by XL3 Acoustic Analyzer
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

Power Supply

48 VDC phantom power, 2.3 mA typical

48 VDC phantom power, 0.8 mA typicalAttenuation< 0.17 dB (Rphantom 2x 6.8 kOhm)< 0.07 dB (Rphantom 2x 6.8 kOhm)

Connector

Balanced 3-pole XLR

Thread for Capsule

60 UNS2

WeightDimensions

90 g, 3.17 oz
Length 142.5 mm (5.6”), diameter 20.5 mm (0.8”)

Temperature Range-10°C to +50°C (14°F to 122°F)

Humidity

5% to 90% RH, non-condensing

NTi Audio #600 040 040

The product specifications may vary based on the mounted microphone capsule type.
19

600 040 200

Specifications

20