OPERATING MANUAL Measurement Microphones
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Index Table of Contents Overview Measurement Microphones .............................4 Scope of Delivery...........................................................5 Description...........................................................................7 Integrated Preamplifier...................................................7 Electronic Data Sheet ....................................................7 Connecting to XL2..........................................................8 Outdoor Microphone M2230-WP.
Overview Overview Measurement Microphones 4 M2230 M2230-WP Outdoor Microphone M2211 M2215 M4260 MA220 PreAmplifier Certified Class 1 measurement microphone in accordance with IEC 61672. Metal diaphragm. Outdoor measurement microphone. Class 1 in accordance with IEC 61672. Metal diaphragm. General purpose measurement microphone. Class 1 frequency response. Metal diaphragm. Measurement microphone for high sound levels (up to 153 dB). Class 1 frequency response. Metal diaphragm.
Overview Scope of Delivery M2230 • Measurement Microphone consisting of -- MA220 Microphone PreAmplifier -- Microphone Capsule for M2230 • Dust Cap • 50 mm Windscreen • Microphone-holder MH01 with Adapter 5/8“ - 3/8“ • Operating Manual • Individual Frequency Response Chart M2230-WP • M2230 Measurement Microphone • WP30 Weather Protection -- Bird spike -- 90mm Wind screen -- Protection cage -- Upper body tube with allen key mount -- Lower body tube -- Footer plate with tripod mounting thread (incl.
Overview 6 M4260 • Measurement Microphone • 33 mm Windscreen • Microphone-holder with Adapter 5/8“ - 3/8“ • Operating Manual MA220 • PreAmplifier • Dust Cap • Microphone-holder with Adapter 5/8“ - 3/8“ • Operating Manual
Microphone Description Description Screen connection used for ASD technology 2 2 3 3 XLR M Pin 2 + Pin 3 Pin 1 Shield 1 1 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 with an ASD Cable to the XL2 Audio and Acoustic Analyzer for measurements at remote locations or for reduction of acoustic reflections.
Microphone Description Connecting to XL2 Microphone plugs directly into the XL2 The XL2 automatically reads the electronic data sheet of the connected microphone as follows: • Connect the measurement microphone to the XL2. • Switch on the XL2. Microphone Connection via a professional Audio Cable For distances longer than 20 meter (= 65 feet) use a high quality, low capacitance standard professional audio cable. The microphone sensitivity has to be entered manually into the XL2 Analyzer.
Outdoor Microphone Outdoor Microphone M2230-WP Introduction The M2230-WP is a weather-protected microphone solution for the XL2 Sound Level Meter allowing acquisition of environmental noise data in outdoor applications. The corrosion-free polymer housing, wind screen, water-repellent membrane and bird spike provide excellent protection from rain, wind, dust and perching birds. The frequency response of the M2230-WP fulfills the IEC 61672 class 1 as well as the ANSI S1.
Outdoor Microphone • Always activate the frequency correction filter in the XL2 when measuring a horizontal sound incidence (sound source from the side) with the M2230-WP. The filter ensures that the measurements accuracy meets the requirements of IEC 61672 class 1 and ANSI S1.4 type 1. • Deactivate the filter only if you are measuring a vertical sound incidence (sound source from above e.g. airplane noise) with the M2230-WP. Do not use the M2230-WP in a horizontal position.
Outdoor Microphone Assembling This chapter describes how to assemble the M2230 Measurement Microphone into the WP30 weather protection kit: Install ASD Cable • Feed the female XLR of the ASD Cable through the bottom of the lower body tube. • Attach the footer plate to the lower body tube using the three allen screws, feeding the cable through the side slot of the footer plate. Insert M2230 Measurement Microphone • Connect the M2230 measurement microphone to the female XLR of the ASD Cable.
Outdoor Microphone Attach the M2230 to the Upper Body Tube Attaching the fixing screw of the upper body tube onto the lower screw of the M2230 measurement microphone ensures that the microphone housing is not scratched. • Insert and gently tighten the fixing screw while jiggling the microphone. You will feel the fixing screw center in the head of the lower screw of the microphone. Do not over tighten the fixing screw.
Outdoor Microphone Mount the Top Section • The top section of the WP30 weather protection kit consists of the wind screen, the enclosed protection cage with waterrepellent membrane and the bird spike. Gently slide the top section over the microphone tip and on to the upper body tube. You will feel a slight increase in resistance approximately 3 mm before the top section’s final position. Slightly increase the pressure until the top section snaps into the final position with an audible click.
Outdoor Microphone Calibration The design of the M2230-WP Outdoor Measurement Microphone supports easy calibration of the microphone. To calibrate, follow the procedure below: • The top section of the M2230-WP is snapped on to the body tube. Remove the top section of the M2230WP by gently pulling the bird spike upwards. At the same time gently push up on the cage inside the wind screen with two fingers of your other hand. You will feel when the snap mechanism is released.
Outdoor Microphone • Calibrate the microphone as described in the XL2 user manual using the NTi Audio Precision Calibrator. • Snap the top section back into position on the body tube. You have successfully calibrated the M2230-WP Outdoor Measurement Microphone.
Accessories Accessories Precision Calibrator 94/114 dB, Class 1 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 WP30 Weather Protection for M2230 Protect your M2230 microphone from rain, wind, dust and perching birds with this professional outdoor weather protection kit.
Accessories ASD Cable The ASD Cable allows for extended connections of the NTi Audio measurement microphones. It supports the transfer of the electronic data sheet from the microphone to the XL2 Analyzer. You may chain up to 4x ASD Cables together in tandem. Length = 5 meter (16 feet) NTi Audio #: 600 000 336 STARQUAD cable with low capacitive load 1 1 2 2 3 3 ASD Housing do not connect Housing Capacity between ASD line to shield total < 2.
Further Information Further Information My NTi Audio Register your instruments at My NTi Audio and benefit from the following possibilities: • • • • • • • 18 Free updates for your instruments Activation of optional product functions Premium access to downloads Receive application and product news Faster worldwide support Tracing support in case of loss or theft Calibration support How to Register • Open the web page “http://my.nti-audio.com”.
Further Information Notes Calibration Certificate • Use the microphone for the intended purpose only. • Protect the microphone from contamination by always using the supplied windscreen. • Never use the microphone in a damp or wet environment. • Do not jar or drop the microphone. • Do not remove the microphone protective grid. • Do not touch the microphone membrane. • Remove the black dust cap of the 1/2” measurement microphones prior to use.
Further Information Warranty Conditions Declaration of Conformity International warranty NTi Audio guarantees the function of its products and the individual 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.
Further Information Information for Disposal and Recycling Dispose of the instrument in accordance with the legal environmental regulations in the country. Regulations for the EU and other European countries with corresponding laws The instrument must not be disposed of in the household garbage. At the end of its service life, bring the instrument to a collecting point for electrical recycling in accordance with the local legal regulations.
Specifications Technical Data Measurement Microphones M2230 Class 1 Certified M2230-WP Class 1 Outdoor Microphone (M2230+WP30) Microphone Type Classification according IEC 61672 and ANSI S1.4 Capsule / Transducer Class 1 / Type 1 Certified Class 1 / Type 1 Temperature Coefficient 22 Frequency Response Class 1 / Type 1 Class 2 / Type 2 1/4” 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.
Specifications M2230 Class 1 Certified M2230-WP Class 1 Outdoor Microphone (M2230+WP30) Temperature Range -0.005 dB / kPa Influence of Humidity (non-condensing) M4260 Class 2 0°C to +40°C (32°F to 104°F) -0.02 dB / kPa -0.04 dB / kPa < ±0.05 dB Humidity < ±0.4 dB 5% to 90% RH, non-condensing Long Term Stability > 250 years / dB Electronic Data Sheet - NTi Audio ASD in accordance with IEEE P1451.4 V1.
Specifications Typical Frequency Response of Measurement Microphones M4260 M2230, M2211, M2210, 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 (free field conditions @ reference direction 0°) 24 10000 10000 20000
Specifications Free Field - Pressure Field Correction Factors Nominal Frequency [Hz] M2230 Microphone [dB] M2211 Microphone [dB] M2215 Microphone [dB] 50 63 80 0.0 0.0 0.0 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 0.0 0.0 0.0 200 250 315 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 400 500 630 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 800 1000 1250 0.1 0.2 0.3 0.1 0.1 0.3 0.0 0.0 0.0 1600 2000 2500 0.4 0.5 0.6 0.5 0.6 0.7 0.1 0.2 0.6 3150 4000 5000 0.8 1.0 1.5 1.1 1.7 2.
Specifications Diffuse Field Correction Factors 26 Nominal Frequency [Hz] M2230 Microphone [dB] 50 63 80 0.0 0.0 0.0 100 125 160 0.0 0.0 0.0 200 250 315 0.0 0.0 0.0 400 500 630 0.0 0.0 0.0 800 1000 1250 0.1 0.1 0.1 1600 2000 2500 0.2 0.4 0.5 3150 4000 5000 0.5 1.1 1.7 6300 8000 10000 1.9 2.6 3.3 12500 16000 20000 4.8 6.1 8.
Specifications Technical Data PreAmplifier MA220 PreAmplifier Microphone PreAmplifier Compatible with 1/2” microphone capsules type WS2F in accordance with IEC61094-4 Frequency Range 4 Hz - 100 kHz Residual Noise Floor typical Frequency Response Flatness 1.6 mV(A) at C_in 18pF ≙ 12 dBA @ 20 mV/Pa Phase Linearity < 1° @ 20 Hz - 20 kHz Maximum Output Voltage Electronic Data Sheet 21 Vpp ≙ 7.4 Vrms ≙ 145 dBSPL @ 20 mV/Pa, THD 3%, 1 kHz Impedance Input: 20 GOhm // 0.
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