| 单词 | curb-signal |
| 释义 | > as lemmascurb-signal 3. Telegraphy. A method of signalling through a long cable, by sending a powerful signal followed by one or more weak signals of opposite sign, the effect of which is to ‘curb’ or prevent the main signal from lingering in the cable; a signal transmitted in this way. Only in combinations, as curb-key, curb sender (an instrument for transmitting signals in this way); curb-sending, curb-signal. ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telegraphy > [noun] > method of signalling curb-key1867 1867 R. S. Culley Handbk. Pract. Telegr. (ed. 2) 247 Arrangements..for discharging a cable rapidly, and for equalising the effect of dashes and dots; the most effective of which is the curb key. 1877 Jrnl. Soc. Telegr. Engineers 5 213 The object of the automatic curb-sender is to diminish the retardation of signals in long cables. 1877 Telegraphic Jrnl. 1 Feb. 27 This system of using two currents, one to produce the signal and the other..to neutralize..the residual effect of the first, is what is known as Curb-Sending. 1877 Telegraphic Jrnl. 1 Feb. 27 Trials have been made..to send curb-signals by means of a hand-key. < as lemmas |
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