A single- frequency signal with a standardized level generally used for level alignment of single links and of links in tandem . ( 188 ) Note: For standardized test signal levels and frequencies, see MIL-STD-188-100 for DOD use, and the Code of Federal Regulations , Title 47, part 68 for other Government agencies.
STANDARD TEST TONE
Meaning of STANDARD TEST TONE in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012