Size: 2.75 in. By 7.6 in. By 1.0 in.; impulse integrating sound level meter; 5 operating modes; large liquid crystal display; durable metal housing; slide switches; wide 70 db range is selectable between low (30-100db) and high settings (70-140 db); overrange and underrange warnings indicate when a change from one setting to the other is recommended for more accurate readings; multiple output jacks; portable design; lightweight; compact; microphone; field replaceable, 0.5 in. Pre-polarized condenser, extends 1.5 in.
An instrument which measures the level of continuous noise present in amplifier and/or receiver circuits with reference to a fixed level of signal generated by a separate noise source. It is designed to measure noise levels over a wide band of frequencies including radio and video frequencies, and is normally calibrated in decibels relative to a specified r.M.S. Voltage summation across a specified impedance, or in decibels relative to a specified noise power level. if only audio frequency range, see meter, audio level.
Classification: Instruments and apparatus without a recording device specially designed for telecommunications, nesoi
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