générateur d'impulsions

Domaine: télécommunicationradiotechnique
Date: 1984

Définition :

Source d'impulsions à fréquence variable et à largeur variable.

Termes :

générateur d'impulsions n. m.
G.I.

Traductions

anglais
Date : 1984
Définition

In the VTR, there are two coils around cores (PG coils) 180° apart on the head drum and there are magnets or iron pieces affixed to the video head disk holding the video heads. When the magnets (or iron pieces) pass the coil, the pulse produced is positive on the approach and negative as the magnet leaves. One pulse is generated with each video head rotation and the signals from the two PG outputs are formed into a rectangular wave. The pulse signal obtained is used as the reference signal during playback and as a comparison signal during recording.

Termes :
1. pulse generator
2. PG
Terme associé :
1. impulse generator