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Microphone Testing
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The Microphone Test System is a comprehensive test solution with very short test cycle time. The turnkey system is based on the high-speed audio analyzer RT-2M and the dedicated microphone production test software “RT-Microphone”. It provides a comprehensive set of measurements for the total quality control of microphone components or final assembled products, such as mobile phones, vocal microphones or headsets.
Schematic Setup:
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| Description
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Key-Parameters:
- Turnkey Solution for Microphone Testing
- Short Test Cycle Time
- Accurate and Repeatable Measurements
- Dedicated for automated production lines
- Automated Logging of Test Results
- State-of-the-art .NET3.0 Technology
- Sequential testing of 2 or more microphones with switchers
- Flexible User Interface
Flexible Parameter and Tolerance Setting
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Test Parameter and Tolerance Setting
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Microphones naturally bear an error rate in production. Sorting out faulty devices in an early production stage thus increases the overall yield, reduces the cost of waste material and optimizes the quality of the manufactured goods. Important for a modern, state-of-the-art Microphone Test system are Reproducibility, Automation, Speed and Simplicity. The RT-2M Audio Analyzer and the test software form together the Microphone Test System that comprises exactly these features.
Measurement Functions:
- Frequency Response
- Sensitivity
- Distortion
- Signal-to-Noise Ratio S/N
- Detection of Audible Imperfections, such as Loose Particles
- Shortly to follow: Directivity, Polar Pattern, ...
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Calibration and Recording of Reference Data
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Recording of Reference Data
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The automated calibration (i.e. equalization of the reference speaker) is executed with the measurement microphone M2010. An unlimited number of reference records can be logged for production tolerance setting.
System integration into existing production lines and the connection to host controllers is very simple. The extremely short test cycle time enables the microphone test system to easily cope with high volume production lines.
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Microphone Test Production Mode
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Production Testing Frequency Response
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The patented measurement algorithms have been optimized for factory noise immunity. This maximizes your production line yield and allows conducting the same measurement in R&D as well as in the production floor.
Production tests can be started automatically after the microphone is connected or manually by any external start-button. The implemented digital input/output functions supports automation handling for e.g.
- Connection to external PLC
- Test Result Indication to the Operator
- Automated Splitting of PASSED/FAILED Samples
- Individual Bin Splitting of different FAILED Samples
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