IEC 60268 7 PDF

IEC SOUND SYSTEM EQUIPMENT –- PART 7: HEADPHONES AND EARPHONES. Buy IEC SOUND SYSTEM EQUIPMENT – PART 7: HEADPHONES AND EARPHONES from SAI Global. IEC Ed. Sound system equipment – Part 7: Headphones and earphones IEC (E), is applicable to headphones, headsets, earphones.

Author: Aralkis Arashit
Country: Burma
Language: English (Spanish)
Genre: Finance
Published (Last): 6 October 2014
Pages: 409
PDF File Size: 16.31 Mb
ePub File Size: 16.62 Mb
ISBN: 979-9-71919-885-6
Downloads: 76008
Price: Free* [*Free Regsitration Required]
Uploader: Zulutilar

The user is first prompted to enter the rated voltage. Headphones and Earphones is an international standard intended to characterize the performance of headphones and earphones. Please complete the short form below all fields are required.

Worldwide Standards We can source any standard from anywhere in the world. Calibrate the microphones per the instructions in the SoundCheck manual. Take the smart route to manage medical device compliance. This value is converted to dBV and used to calculate the IM and difference frequency stimulus levels.

IEC-60268-7 Headphone Test Sequences

Headphone Voltage Sensitivity Final Display. We use cookies to make our website easier to use and to better understand your needs.

Headphones and earphones Status: Learn more about the cookies we use and how to change your settings.

Marking, Microphones, Audio systems, Ratings, Designations, Instructions for use, Headphones, Classification systems, Frequency response, Earphones, Audio equipment, Voltage measurement, Impedance measurement, Testing conditions, Preamplifiers, Comparative tests, Acoustic measurement, Electrical wave measurement, Electrical properties and phenomena, Acoustic testing.

  INTERMATIC ET1105C PDF

The standard itself is a lengthy document, 9 Eic and 3 Annexes covering 46 printed pages.

IEC Headphone Test Sequences – Listen, Inc.

The content you have requested is available only to registered visitors. Connect the impedance boxes between the headphone amp out and headphone input. Hardware Requirements In order to run the sequences, the following hardware is required: First, a pink noise stimulus is played from the noise speakers and recorded by the unoccluded ears.

Please download Chrome or Firefox or view our browser tips.

IEC | IEC Webstore

Search all products by. Registration required The content you have requested is available only to registered visitors. The sequence prompts the operator to enter the rated voltage and rated impedance of the DUT.

The play and record acquisition takes place 3 times and the user is prompted to reposition the DUT on the HATS in between acquisitions. You are ready to start the sequence.

BS EN 60268-7:2011

Sound System Equipment — Part 7: This sequence satisfies the requirements of Section 8. A series of post processing steps calculates the attenuation curves, their average values and shows them on the final display.

The sequence uses a stepped sine stimulus to measure frequency response, THD and impedance, a composite signal of 70 Hz and Hz with an amplitude ratio of 4: The sequence first plays a stepped sine through both channels of the DUT and captures the sound radiation from the DUT using 2 reference mics. If more than 4 input channels are available, 6028 input signal ic may be assigned to separate hardware channels.

  FRED PEARCE LAND GRABBERS PDF

If passive, connect to the headphone amp or separate audio power amplifier You are ready to start the sequence. There are several unique Signal Paths used in the sequences which are not a part of the default SoundCheck installation. In order to add these Signal Paths to your System Calibration or relink to existing Signal Paths, you should open each of the sequences individually and, if prompted, add or relink Paths to your System Calibration.

Click to learn more. Setup System, Hardware and Calibration Before attempting to run any of the sequences, read the following setup instructions.

Software Requirements SoundCheck Accept and continue Learn more about the cookies we use and how to change your settings. Five separate sequences are provided, each designed to measure specific characteristics. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. The Hz recorded time waveforms are processed using heterodyne analysis to derive their fundamental values.

Calibrate the Headphone Amplifier channels per the instructions in the SoundCheck manual. A pink noise stimulus is played from the noise speakers and recorded by the occluded ears.