e/Standard test tone

Information
has gloss	eng: In telecommunication, a standard test tone is a single-frequency signal with a standardized level generally used for level alignment of single links and of links in tandem.
lexicalization	eng: Standard test tone
instance of	(noun) (often plural) systems used in transmitting messages over a distance electronically telecom, telecommunication

Meaning
Japanese
has gloss	jpn: テストトーン(Test tone)とは低周波発振器により発生された可聴帯域内における単一周波数の正弦波信号である。もっぱら音響機器並びに伝送路の試験及び測定の為に用いる。
lexicalization	jpn: テストトーン