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Standard test signal

In telecommunication, a standard test signal is a single-frequency signal with standardized level used for testing the peak power transmission capability and for measuring the total harmonic distortion of circuits or parts of a circuit.

Note: Standardized test signal levels and frequencies are listed in MIL-STD-188-100 and in the Code of Federal Regulations, Title 47, part 68.

Source: from Federal Standard 1037C and from MIL-STD-188

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