TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

BURST CARRIER [3 records]

Record 1 2006-12-05

English

Subject field(s)
  • Television (Radioelectricity)
  • Video Technology
DEF

A signal which consists of 8 to 12 cycles of the chrominance subcarrier (3.579545 MHz) added at the end of the horizontal sync signal of the TV signal.

OBS

This burst signal is exactly the in-phase and same frequency as the chrominance subcarrier being transmitted and it becomes the reference for phase comparison during reception(amplitude for chroma, phase fo rhue determination) in generating the continuous carrier necessary at the time of deriving the color signal.

Key term(s)
  • colour sync signal
  • colour burst

French

Domaine(s)
  • Télévision (Radioélectricité)
  • Vidéotechnique
DEF

Signal composé d'une rafale de huit à douze cycles dans la sous-porteuse couleur (3,579545 MHz) qui est ajouté à la fin du signal de synchronisation horizontal du signal télé.

OBS

[La salve de synchronisation de chrominance] synchronise la phase de l'oscillateur de chrominance de 3,58 Mhz du récepteur.

Spanish

Save record 1

Record 2 1996-05-13

English

Subject field(s)
  • Analytical Chemistry
CONT

A simple arrangement of two cavities in series showed the feasibility of detecting traces of one gas in another. A klystron was used to generate microwave power which was fed through a wave guide to a transmission-type cavity. Another cavity was mounted in series with and tuned to the same frequency as the first; both cavities were identical except that the second had a gas inlet and outlet ports. From this measuring cell, its microwave energy was sent to a crystal detector. By frequency-modulating the klystron with a 50-cps sine wave voltage on the repeller, a burst of energy passes to the detector each time the generator frequency equals that of the cavities. The detector current is amplified and measured with an oscilloscope. At the beginning of the run, the two cavities are filled with the nitrogen carrier gas and, if the composition in one of the cavities is changed, its electrical size will change... causing a decrease of current from the detector.

French

Domaine(s)
  • Chimie analytique

Spanish

Save record 2

Record 3 1984-05-25

English

Subject field(s)
  • Telecommunications Facilities
  • Amateur Radio
CONT

a frequency meter from Farnell features a "burst" facility to make carrier frequency measurements on mobile radios rapid and simple.

French

Domaine(s)
  • Installations de télécommunications
  • Radio amateur

Spanish

Save record 3

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