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Anritsu ML424A true rms level meter psophometer
The ML424A/B is a compactly designed level-meter of high level measuring accuracy with a calibration signal internally provided. It is also capable of measuring noise levels in conformity with the ITU-T Recommendations with the necessary psophometer option.
* Excellent frequency response of ±0.1 dB over the range from 100 Hz to 13 MHz
* High measuring accuracy of ±0.2 dB including the frequency response, attenuator step accuracy, and temperature stability
* A psophometer option can be incorporated (option 01) for measuring noise levels of telephone and sound program circuits. The characteristics of the weighting filters conform to the ITU-T Recommendations P.53 and J.16
* The ML424B provides true RMS detection
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