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Induction Loops
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Induction loop systems are widely installed in churches, theatres and cinemas, for the benefit of hearing-impaired people. The use of induction loop systems has been even extended too many further applications, such as ticket offices, bank counters, drive-through services or elevators.
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The Minilyzer together with the optional MiniLINK USB interface measures induction loops AFILS according standard IEC60118. A complete measurement menu following the standard can be enabled including calibration to customer field sensors.
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The calibrated receiver for inductive loop systems can be connected by an audio cable to the Minilyzer.
The international standard IEC 60118 section 4 (also known as SN, EN or BS 60118-4) specifies the following requirements (all referred
to 400 mA/m or 0 dBL (=dB Loop):
- Average Field Strength -12 dBL +/- 3 dB (= 100 mA/m)
- Maximum Field Strength 0 dBL (= 400 mA/m)
- Frequency Response 100 – 5,000 Hz +/- 3 dB
- Background Noise Level -32 dBL, “A” weighted
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Related products
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The following products are required for the induction loop measurements:
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