Black recording
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In telecommunication, the term black recording has the following meanings:
1. In facsimile systems using amplitude modulation, recording in which the maximum received power corresponds to the maximum density of the record medium.
2. In a facsimile system using frequency modulation, recording in which the lowest received frequency corresponds to the maximum density of the record medium.
Source: from Federal Standard 1037C and from MIL-STD-188
See Also: glossary of facsimile terms