CMR3  Calibrated Induction Loop Measuring Receiver for Audio Analysers CMR3 Calibrated Induction Loop Measuring Receiver for Audio Analysers
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Ampetronic

CMR3 Calibrated Induction Loop Measuring Receiver for Audio Analysers

Product ID: CMR3
Brand: Ampetronic

View or buy the Support Products Assistive Listening Systems - CMR3 Calibrated Induction Loop Measuring Receiver for Audio Analysers from Ampetronic to discover other options and shipping details.

Description

Ampetronic
Calibrated Induction Loop Measuring Receiver for Audio Analysers

The CMR3 calibrated receiver is designed for measuring the performance of audio induction loop systems. The audio output is within ±0.25dB over the frequency range and where used with a suitable audio analyser such as the Minilyser from Neutrik Ltd, the frequency response and field distribution of the magnetic field from any audio induction loop system 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.

Features

  • Enables easy assessment of the system to the international induction loop standard IEC60118-4

  • Accuracy to within 0.5dB

  • 5 year warranty

  • Compatible with most audio analysers

 
Applications include
  • Measure loop coverage and spill

  • Assess frequency dependent loss due to metal structures

  • Certification of an induction loop system to IEC60118-4

 

Specification


Magnetic field response

400mA/m RMS

0dBu audio output (0.775V)

Field strength

Coil orientation vertical (indicated by

Frequency response

50Hz to 8kHz

±0.25dB

30Hz and 14kHz

-3dB

A-weighting filter

EN61672-1:2003 sound level meter (Switched)

Gain stability

Output variation over battery life

<0.1dB

Output variation due to loading

<0.1dB

Output variation over temperature range

<0.25dB

Overall gain variation

<0.5dB

Output

Output type

Active Balanced

Load impedance

>600Ω

Connector

3.5mm stereo jack socket

Power

Battery

2 x AA alkaline

Battery life

Approximately 200 hours

Battery condition

OK when LED illuminated

Physical

Dimensions

62 w x 26 d x 112 h (mm)

Weight

84g (excluding batteries)

Temperature range

-10°C to +45°C

Accessories

3.5mm stereo plug to XLR plug adaptor cable supplied (1.5m length), audio cables for simple interfacing of audio devices to loop systems available seperately (see product SCC)

Standards Compliance

The CMR3 is CE marked to all relevant safety and EMC standards

Ashton Audio in conjunction with Ampetronic can design your induction loop system for you.  Simple induction loop designs are free, complex array systems will be charged for at a nominal rate.  You can request a design through our 'Contact Us' Enquiry Form.

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