Calibrating Induction Loop Systems as Per IEC 118-4 Standards

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Calibrating Induction Loop Systems as Per IEC 118-4 Standards

Every Oval Window Audio induction loop system complies with the Americans With Disabilities Act and Technical Standard IEC 118-4.

IEC 118-4 states: The field strength within the loop shall equal 100 mA/m +/- 3 dB, with 80 mA/m as a minimum and 140 mA/m as a maximum, intended as the average 1 KHz value of the vertical component of the field strength inside the area enclosed by the loop, measured 1.2 meters above the floor. Allowing for 12 dB peaks occurring in speech, peak field strength may reach 400 mA/m. The frequency response shall be 100 Hz. - 5 KHz. +/- 3 dB.

Perform Listening Checks On Your Loop System

When possible, a pre-installation listening check should be made before loop installation. Sources of electrical noise interference should be identified and resolved. E-mail Oval Window Audio for more information pertaining to installing and calibrating induction loop systems.

Regularly scheduled listening checks of ALL assistive listening systems are strongly recommended. Ideally, these checks should be performed before each use.

For more technical information and recommendations on IEC 118-4, click here to read our summary article.

Back to Induction Loop Assistive Listening Systems' List, click here.

E-mail Oval Window Audio Today

If you have any questions about calibrating induction loop systems, simply e-mail us directly. One of our representatives will get back to you promptly. Just e-mail your message to info@ovalwindowaudio.com

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