The most common method used to check receiver performance.
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ComTekk SINAD utilizes the latest in Digital Signal Processing (DSP) technology to accurately measure several key performance characteristics of radio receivers by analyzing the spectral content of a received audio signal.
The receiver under test is fed with a calibrated RF signal generator, modulated to about 60% with a 1KHz sinewave tone (usually FM). Receiver audio output is coupled to the computer's sound card where an A/D converter reads the signal's instantaneous voltage 11,025 times per second. This is the sampling rate.
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