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Listen Technologies Hearing Loop Calibrated Measuring Receiver - CMR3

Listen Technologies Hearing Loop Calibrated Measuring Receiver - CMR3

Part Number: CMR3
Our Price: $289.00
Availability: Usually ships the same business day
Description
Specifications
Accessories
Reviews

Hearing Loop Calibrated Measuring Receiver

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

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

Key Features
  • Calibrated receiver designed for measuring the performance of audio hearing loop systems to the international hearing loop standard IEC60118:4.
  • Accuracy with 0.25 dBu and compatible with most analyzers.
  • Five year warranty back by Listen's service and support.
Includes
  • One (1) CMR3 Hearing Loop Calibrated Receiver


Audio
Frequency Response50 Hz to 8 kHz: 0.25 dB, 30 Hz and 14 kHz: -3 dB, A-Weighted Filter: EN61672-1:2003 Sound Level Meter (Switched)
Gain StabilityOutput variation over battery life: < 0.1 dB, Ouput variation due to loading: < 0.1 dB, Output variation over temperature range: < 0.25 dB, Over gain variation: < 0.5 dB
Indicators
Battery StatusOK when LED Illuminated
Interconnections
Headphone Connector3.5 mm Stereo Balanced, > 600 Ohm
Loop
Coil OrientationCoil orientation vertical as indicated on unit
Reference Level400 mA/m RMS - 0 dBu Audio Output (0.775 V)
Power
Battery TypeTwo (2) AA Alkaline
Battery LifeApproximately 200 hrs.
Physical
Width2.4 in. (62 mm)
Height4.4 in. (112 mm)
Depth1.0 in. (26 mm)
Shipping Weight1.0 lbs. (454 g)
Weight2.88 oz. (82 g)
EnvironmentIP20 Protection, 20 to 90% Relative Humidity, 14 F (-10 C) to 113 F (45 C)