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Ampetronic CMR3 Calibrated Induction Loop Measuring Receiver


The Ampetronic CMR3 is a superb Calibrated Induction Loop Measuring Receiver, designed for measuring the performance of Audio Induction Loop Systems. The audio output is within ±0.25 dB over the frequency range and where used with a suitable audio analyser, such as the Minilyser from Neutrik Ltd. Frequency response and field distribution of the magnetic field from any Audio Induction Loop Systems can be plotted.

Calibrated to provide 0dBu output for a field strength of 400mA/m RMS, in accordance with the international induction loop standard IEC60118-4 it is an essential tool for anyone wishing to assess loop system performance for analyses or certification.

Product Features:

  • Accuracy to within 0.5dB
  • Compatible with most audio analysers
  • Enables easy assessment of the system to the international Induction Loop standard IEC60118-4


  • Measures Loop Coverage & Spill
  • Certification of an Induction Loop System to IEC60118-4
  • Assess frequency dependent loss due to metal structures
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