Standard test tone
Encyclopedia
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
.
For standardized test signal levels and frequencies, see MIL-STD-188
-100 for United States Department of Defense
(DOD) use, and the Code of Federal Regulations
Title 47, part 68
for other Government agencies.
Telecommunication
Telecommunication is the transmission of information over significant distances to communicate. In earlier times, telecommunications involved the use of visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs, or audio messages via coded...
, a standard test tone is a single-frequency
Frequency
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency...
signal with a standardized level generally used for level alignment of single links and of links in tandem
Tandem
Tandem is an arrangement where a team of machines, animals or people are lined up one behind another, all facing in the same direction....
.
For standardized test signal levels and frequencies, see MIL-STD-188
MIL-STD-188
MIL-STD-188 is a series of U.S. military standards relating to telecommunications.-Purpose:Faced with “past technical deficiencies in telecommunications systems and equipment and software…that were traced to basic inadequacies in the application of telecommunication standards and to the lack of a...
-100 for United States Department of Defense
United States Department of Defense
The United States Department of Defense is the U.S...
(DOD) use, and the Code of Federal Regulations
Code of Federal Regulations
The Code of Federal Regulations is the codification of the general and permanent rules and regulations published in the Federal Register by the executive departments and agencies of the Federal Government of the United States.The CFR is published by the Office of the Federal Register, an agency...
Title 47, part 68
Part 68
In telecommunication, part 68 is the section of Title 47 of the Code of Federal Regulations of the United States governing the direct connection of telecommunications equipment and customer premises wiring with the public switched telephone network and certain private line services, such as ...
for other Government agencies.