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iSEMcon 400001 Скачать руководство пользователя страница 14

APPLICATION NOTES

FREEFIELD vs. DIFFUSEFIELD USE

Only  a  small  percentage  of  all  acoustical
measurements  are  performed  in  a  well
defined and/or well controlled
environment of an e.g. acoustical labora-
tory  –  on  the  contrary  most  acoustical
measurements are done under not really
controlled  conditions.  Here  are  some
hints on how to use our microphone.

Sound Fields:

Free field: There are no reflecting objects,
only the microphone  disturbs  the  sound
field.
Diffuse field: There  are  many  reflecting
surfaces or sound  sources  so  that  the
sound waves arri ve from all directions.

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Содержание 400001

Страница 1: ...iSEMic series microphones accessories ONE MIC SERVES ALL Calibration data my isemic com ...

Страница 2: ...adable ASCII file 1 6 octave www iSEMcon com freefield Sensitivity 2 85 mV Pa 1kHz 10 00 0 02 11 26 0 10 19992 19 0 93 frequency Hz amplitude response dB Visit my iSEMic com for further information and calibration file download ...

Страница 3: ......

Страница 4: ...dio Equipment The superb func tionality is provided by the space saving microphone built in electronics The advantages of the new iSEMic micro phone series are obvious Mobile devices like iPad s and iPhone s are more and more used for controlling live sound mix ers and PA Systems giving the FOH and system engineers the possibility of walk ing the venue while optimizing for sound and acoustics usin...

Страница 5: ...m acoustics analysis including recording studios and home theaters It can normally be used without the included freefield calibration data file for compensation In this case take the individual calibration data as proof of its superb performance Back at the FOH place the same micro phone can be used to service the PC or MAC computer by the use of an off the shelf USB interface and XLR cable ...

Страница 6: ...PE power Frequency range 20Hz 20kHz IEC 61672 class 2 frequency response Standard 125dBspl and High SPL 135dB version Extended temp 95 C 200 F range and or IP54 watertight option upon request Surge voltage protection Calibration chart and calibration data files included Stainless steel body Gold plated con nectors Microphone body dia 1 4 7 mm ...

Страница 7: ... Microphone length 3 7 94 mm TYPICAL APPLICATIONS Sound power and sound field analysis Industrial Acoustics Room acoustics analysis Sound reinforcement Real time analyzers ...

Страница 8: ...y Temperature Drift 0 015dB K typ Microphone Polarity Non Inverting Frequency Response calibrated 10 20 000 Hz Frequency Response IEC61672 1 class 2 Inherent Noise100 10000 Hz 30dB typ Max SPL 3 distortion limit 125dBspl ELECTRICAL Output Impedance 200 Ω Supply voltage BIAS PHANTOM IEPE 2 5 52Vdc SPECIFICATIONS values for 23ºCelsius ...

Страница 9: ...20 90 Operating Humidity Range 0 90 r H Axial Vibration Sensitivity 50dB PHYSICAL Housing Material Stainless Steel Output Connector SMB Dimensions Ø 7mm x 3 7 94mm Weight 0 3 oz 10g CONFORMITY IEC 61000 6 1 SPECIAL FUNCTIONALITY Voltage Surge Protection EMC Noise Filter ...

Страница 10: ...PRODUCT OVERVIEW Base kit additional Phantom Power Adapter special accessory extension rod ...

Страница 11: ...accessories cables holding clamp shock mount adapters more www iSEMcon com ...

Страница 12: ...PRODUCT OVERVIEW Base kit additional Phantom Power Adapter Accessories more www iSEMcon com ...

Страница 13: ... download from my isemic com at no cost metal box 400001 iSEMic 725TR 460001 SA iBF adapter 460002 SA SBF adapter 460003 SA XBF adapter 460004 SA CBF adapter 460010 SA BFM500 extension rod 470012 CX P48 BF 470022 CX BFBM 470032 CX TRSBF 222020 MH CH19 222050 MH SH19 220023 Microphone bushing MH 07D iSEMic CA 240030 WS 7XL windscreen 230300 CA 1 4 2 1 4 to 1 2 insertion adapter ...

Страница 14: ...coustical labora tory on the contrary most acoustical measurements are done under not really controlled conditions Here are some hints on how to use our microphone Sound Fields Free field There are no reflecting objects only the microphone disturbs the sound field Diffuse field There are many reflecting surfaces or sound sources so that the sound waves arri ve from all directions ...

Страница 15: ... there are many practical situations where the sound field is not really of a well defined type This application note should give you an idea on how to measure with a free field re sponse microphone The free field microphone is the most common in use chosen on tradition but we should know about the sound field The following picture shows both the free field and the diffuse field response of a free...

Страница 16: ...The diffuse field response is not easy to measure because it is not easy to gener ate a truly diffuse sound field over a wide frequency range but there is a ...

Страница 17: ...procedure to estimate the diffuse field frequency behavior of a free field micro phone From literature we know that a micro phone s random diffuse incidence ...

Страница 18: ...ly iSEM con has measured the 90deg response of many iSEMic microphones and used the averaged data to evaluate a 5th order polynomial This is now used to derive the diffuse field response from the microphones free field response data Typical freefield measurement Speaker measurement The micro phone should target to the sound source speaker ...

Страница 19: ...diffusefield meas urements Concert SPL monitoring normally at FOH Room Acoustics measurement RT60 the microphone should not target to the sound source Let it target to the ceiling This is the most practical way ...

Страница 20: ... unlikely event of equipment failure please contact your local iSEMcon repre sentative or the iSEMcon factory located in Germany sales iSEMcon com Unauthorised dismantling of the mic rophone will invalidate the warranty MAINTENANCE ELECTRONIC WASTE This electronic device should be disposed separately from your household waste at the end of its lifetime There are various collection systems for ...

Страница 21: ...d If the system does not have a muting option the vol ume should be turned off This avoids loud popping noise that can cause damage in speakers and or affect your hearing recycling in the European Un ion For further information please contact your local au thority or retailer where you have purchased the product INSTALLATION ...

Страница 22: ... time of initial purchase is free of material and manufacturing defects This guarantee is valid for two 2 years from the date of purchase of a new unused product by the original end user As proof of purchase by all means please keep your receipt of purchase The date of purchase and the name of the product have to be indicated on the receipt Without this proof which will be checked by iSEMcon no cl...

Страница 23: ...estion or the replaced product is valid for the remaining duration of the original warranty period or for ninety 90 days from the date of repair whichever is longer The repair or replacement claims may be filled with functionally equivalent reconditioned products if the purchased product is no longer available The replaced parts or components becomes property of iSEMcon This warranty claim is void...

Страница 24: ...s limited warranty The limited warranty limits neither your legal rights nor the rights arisen from the purchase contract between you and the retailer Excluded from this limited warranty are Minor defects or irregularities in the condi tion of the product which are insignificant as far as the quality and intended use of the product are concerned Rechargeable and non re chargeable batter ies Defect...

Страница 25: ...rce majeure Defects in the product of which you were already aware of at the time of purchase Defects in the product caused by the use of accessory components or peripheral de vices which are not among the original ac cessories supplied by iSEMcon THERE EXISTS NO EXPRESS WARRANTY RE GARDLESS OF WHETHER THEY ARE WRITTEN OR VERBAL BEYOND THIS PRINTED VERSION ALL IMPLIED WARRANTIES ARE ONLY VALID FOR...

Страница 26: ...C DISADVANTAGES In some countries states the exclusion or limiting of indirect or consequential damages or the limiting of the duration of warranty is not allowed In this case the previously men tioned limitations and exclusions do not apply to you Products manufactured and or sold herinafter products by iSEMcon GmbH and or iSEMcon LLC here inafter iSEMcon are not designed for use as a component i...

Страница 27: ...horized application Buyer agrees to indemnify and hold harmless iSEMcon and its directors employees agents representatives and sales partners from and against any and all claims costs damages losses and expenses including attorney fees which arise from or are alleged to have been caused by any claim for personal injury or death connected with buyer s use of an iSEM con product in any unauthorized ...

Страница 28: ...on LLC PO Box 607 Sylvania OH 43560 USA Fon 1 877 309 1002 Fax 1 419 517 5007 iSEMcon GmbH Zeppelinstr 6 68519 Viernheim Germany Fon 49 6204 911 24 91 Fax 49 6204 911 24 90 sales iSEMcon com www iSEMcon com ...

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