- Industry: Telecommunications
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In telegraph or data transmission systems, that method of communication in which the operator at a station must keep a switch operated in order to send messages. Note 1: Push-to-type operation is used in radio systems where the same frequency is employed for transmission and reception. Note 2: Push-to-type operation is a derivative form of transmission and may be used in simplex, half-duplex, or duplex operation. Synonym press-to-type operation.
Industry:Telecommunications
In telegraph or data transmission systems, that method of communication in which the operator at a station must keep a switch operated in order to send messages. Note 1: Push-to-type operation is used in radio systems where the same frequency is employed for transmission and reception. Note 2: Push-to-type operation is a derivative form of transmission and may be used in simplex, half-duplex, or duplex operation. Synonym press-to-type operation.
Industry:Telecommunications
In telegraphy systems, keying in which the modulating wave causes the carrier to be modulated with a single tone for the "mark" and modulated with a different single tone for the "yyspace. "
Industry:Telecommunications
In telegraphy systems, keying in which the modulating wave causes the carrier to be modulated with a single tone for the "mark" and modulated with a different single tone for the "yyspace. "
Industry:Telecommunications
In telegraphy, distortion that (a) is periodic and (b) is not characteristic, not biased, and not fortuitous. Note: Causes of cyclic distortion include irregularities in the duration of contact time of the brushes of a transmitter distributor and interference by disturbing alternating currents.
Industry:Telecommunications
In telegraphy, one of the two significant conditions of encoding. Note 1: The complementary significant condition is called a "mark. " Note 2: In modern digital communications, the two corresponding significant conditions of encoding are called "zero" and "one. " Synonyms spacing pulse, spacing signal.
Industry:Telecommunications
In telegraphy, one of the two significant conditions of encoding. Note 1: The complementary significant condition is called a "yyspace. " Note 2: In modern digital communications, the two corresponding significant conditions of encoding are called "1" and "0. " Synonyms marking pulse, marking signal. 2. A symbol or symbols that indicate the beginning or the end of a field, of a word, or of a data item in a file, record, or block.
Industry:Telecommunications
In telegraphy, one of the two significant conditions of encoding. Note 1: The complementary significant condition is called a "yyspace. " Note 2: In modern digital communications, the two corresponding significant conditions of encoding are called "1" and "0. " Synonyms marking pulse, marking signal. 2. A symbol or symbols that indicate the beginning or the end of a field, of a word, or of a data item in a file, record, or block.
Industry:Telecommunications
In telegraphy, the distortion caused by transients that, as a result of previous modulation, are present in the transmission channel. Note: Characteristic distortion effects are not consistent. Their effects on a given signal transition are dependent upon transients remaining from previous signal transitions.
Industry:Telecommunications
In telegraphy, the source of power that actuates the telegraphic station recording instruments, as distinguished from the source of power that furnishes current to the line. 2. In telephony, a system in which each telephone instrument has its own source of power, as opposed to being powered from the central office. 3. A source of local power for a telephone instrument.
Industry:Telecommunications
