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Summary of Contents for Norsonic nor1217
- Page 1 INSTRUCTION MANUAL Outdoor microphone nor1217...
- Page 3 Outdoor microphone nor1217...
- Page 4 Norsonic AS reserves the right to amend any of the informa- tion given in this manual in order to take account of new developments.
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Page 5: Table Of Contents
System check Frequency response Self-noise Cables and cable length Directional response Frequency response Self-noise and wind Chapter 5 Connecting the Nor1217 to Sound Analyser Nor140 ..........15 Chapter 6 Maintenance ......................17 Chapter 7 Specifications .....................18 Mounting direction Acoustic performance General Frequency response... -
Page 7: Introduction
IP 55 requirements. The Protection kit is designed for use with the preamplifier Nor1209 and one The base of the Nor1217 is made of an electrical insulat- of the microphones Nor1225 or Nor1227. ing material. The microphone body will be fully insulated... -
Page 8: Assembling
Assembling Assembling Birdspike Wind, dust and water protection The outdoor microphone Nor1217 normally shipped without preamplifier and microphone, since these parts is normally taken from the Nor140 Sound Analyser. Upper part Depending on the application, you will need a mast... -
Page 9: Grounding And Lightning Protection
Norsonic Nor1217 Instruction Manual Unscrew and remove the upper part consisting of than 10 mm in order not to interfere with the directional birdspike and windscreen as one unit. Do not remove the properties of the microphone. windscreen from this upper part as this may destroy the Safety considerations may require the screen of the weather protection and alter the acoustic performance. -
Page 10: Microphone Calibration
Chapter 3 Microphone calibration Microphone calibration The Nor1217 can be calibrated with a sound calibra- tor for ½” microphones without the need for special couplers. We recommend using Nor1251 (1000 Hz) or Nor1253 (250 Hz). Unscrew the upper part of the microphone to gain access to the microphone cartridge. -
Page 11: Technical Description
Norsonic Nor1217 Instruction Manual Technical description Birdspike Upper part Windscreen The outdoor microphone Nor1217 is based on a ½” working standard microphone type WS2F according Microphone cartridge to IEC 61094-4. Two types of microphones is tested and is recom- mended;... -
Page 12: Electrical Description
Electrical description field. If disassembled in the field, the performance may be reduced due to contamination from dust and hu- The power to the Nor1217 will normally be supplied midity. from a Norsonic sound analyser Nor140 instrument When Nor1217 substitutes a normal measurement... -
Page 13: System Check
Norsonic Nor1217 Instruction Manual System check The supply voltage will affect the maximum sound pres- sure that can be measured. For ±15 V or +30 V supply, The system check terminal, pin 1, shall be termi- the maximum peak value exceeds 10 volt corresponding... - Page 14 Chapter 4 Technical description A typical level for the returned signal is 45 mV with The sound analyser Nor140 has a build-in signal an excitation of 1 volt corresponding to a sound level generator that delivers the required signal for system of 92 –...
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Page 15: Frequency Response
Norsonic Nor1217 Instruction Manual Frequency response The typical frequency response for the preamplifier Nor1209 is shown below. The frequency response for the outdoor microphone system is therefore mainly de- termined by the microphone cartridge and the acous- tic performance of the enclosure. -
Page 16: Self-Noise
Chapter 4 Technical description Self-noise The electrical noise when the microphone is substi- tuted by an 20 pF capacitor is shown on the graph be- low. 0 dB corresponds to 1 µV. For a microphone with a sensitivity of 50 mV/Pa (Nominal value of Nor1225/ Nor1227), 0 dB voltage also corresponds to the normal reference pressure for sound: 20 µPa and the noise level may be compared with sound pressure level di-... -
Page 17: Cables And Cable Length
Instruction Manual Cables and cable length However, when the signal contains the combination The Nor1217 with its preamplifier Nor1209 has excel- of high amplitude and high frequency, the capacitive lent driving capability for long cables. The signal output loading will lead to high output current. A limited cur-... -
Page 18: Directional Response
The upper adjacent figure shows the directional re- sponse for Nor1217, when the reference axis is verti- cal, for the frequencies 1000 Hz, 4000 Hz and 8000 IEC 61672-1 specifies tolerance limits for any frequen- cy. -
Page 19: Frequency Response
Norsonic Nor1217 Instruction Manual Frequency response When the microphone system is used in connection with the precision sound analyser Nor140 (for program The figure below shows the typical frequency re- version 3.0 and above), just select 1214/1216/1217 sponse for sound approaching the microphone in two Vertical or Horizontal in the input setup menu to enable directions. -
Page 20: Self-Noise And Wind
Chapter 4 Technical description Self-noise and wind The figure below shows typical self-noise for the mi- crophone system as levels for the various 1/3-octave frequency bands re. 20 µPa when the microphone is placed in a horizontal, laminar flow of air with speed 0, 5 and 10 m/s, respectively. -
Page 21: Connecting The Nor1217 To Sound Analyser Nor140
Connecting the Nor1217 to Sound Analyser Nor140 The Nor1217 is designed to be used with the Sound It is not needed to do any settings in the “2:corrections” in this menu. This is all pre-set when selecting the 1217 Analyser Nor140. The Nor140 supports all the needed corrections, system check facilities for the two types as transducer. - Page 22 Chapter 5 Connectin the Nor1216 to Sound Analyser Nor140 To activate the System Check push SETUP – 1 (Instru- ment menu) – 9 (Misc. Parameters) – 7 (Microphone NOTE: Please note that the System check) Check signal must be deactivated when you want to calibrate the microphone with an acoustical calibrator.
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Page 23: Maintenance
Norsonic Nor1217 Instruction Manual Maintenance The need for maintenance depends largely on the environmental conditions where the microphone sys- tem is used. Contamination of dust, ice or snow on the windscreen may alter the acoustic performance. For most applications, it will be sufficient to check the microphone periodically by using the system check facility, e.g. -
Page 24: Mounting Direction
Chapter 7 Specification Specifications Mounting direction Directional response The microphone shall be mounted with the tip pointing The directional response satisfies the requirements for upwards and the axis of symmetry shall be vertical. a Class 1 sound level meter according to IEC61672-1. The acoustic reference axis for the microphone may See section 4.4 Directional response for further infor- either be horizontal or vertical. -
Page 25: Conformity
Conformity Accessories and spare parts The microphone satisfy the requirements for a Class Windshield upper part: Norsonic part no. Nor4529 1 sound level meter according to IEC 61672-1 when combined with Nor140 equipped with software version Assembled upper part with windscreen: 3.0 and upwards –... -
Page 27: Declaration Of Conformity
All our products are tested individually before they leave the factory. This Declaration of Conformity does not affect our warranty obligations. Tranby, May 2013 Dagfinn Jahr Quality Manager The declaration of conformity is given according to EN 45014 and ISO/IEC Guide 22. Norsonic AS, P.O. Box 24, N-3421 Lierskogen, Norway... - Page 28 P.O. Box 24 N-3421 Lierskogen Norway Norsonic AS supplies a complete range of instrumentation for acoustics – from sound calibrators, micro- Tel: +47 3285 8900 phones and preamplifiers; via small handheld sound level meters to advanced, yet portable, real time...
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