{"id":39258,"date":"2020-12-02T07:40:44","date_gmt":"2020-12-02T07:40:44","guid":{"rendered":"https:\/\/\/horloge-atomique-sur-puce\/"},"modified":"2020-12-02T07:40:44","modified_gmt":"2020-12-02T07:40:44","slug":"horloge-atomique-sur-puce","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/horloge-atomique-sur-puce\/","title":{"rendered":"Horloge atomique sur puce"},"content":{"rendered":"<p>Alors que les oscillateurs rubidium d\u00e9tectent la transition atomique \u00e0 l\u2019aide d\u2019une lampe \u00e0 d\u00e9charge au rubidium (lampe Rb), l\u2019ICPT-1 fait appel au laser pour induire des transitions quantiques. La consommation \u00e9lectrique beaucoup plus faible du laser compte parmi ses atouts majeurs. D&rsquo;autre part, le cycle de vie tr\u00e8s limit\u00e9 d\u2019une lampe Rb se situe typiquement aux alentours de dix ans, valeur largement inf\u00e9rieure \u00e0 l\u2019esp\u00e9rance de vie du laser.&nbsp;<\/p>\n<p>Les utilisateurs peuvent connecter une entr\u00e9e 1 PPS externe ou utiliser l\u2019horloge interne comme sortie 1 PPS \u00e0 des fins de synchronisation dans diverses applications. En mode de fonctionnement libre, utiliser l\u2019horloge interne de l\u2019ICPT-1 comme source de signal 1 PPS, permet de b\u00e9n\u00e9ficier d\u2019un mode \u00ab hold-over \u00bb utile. L\u2019ajustement de fr\u00e9quence num\u00e9rique et le compteur 1 seconde TOD (time of day) en option, sont accessibles par le biais d\u2019une interface de communication s\u00e9rie UART.<\/p>\n<p>Contenue dans un bo\u00eetier de 36,0 x 45,0 x 14,5 mm, l\u2019ICPT-1 est plus petite que les oscillateurs rubidium classiques et ne consomme typiquement que 500 mA @ 3,3 V. Compte tenu de sa tol\u00e9rance de fr\u00e9quence de 0,05 ppb, de sa stabilit\u00e9 \u00e0 court terme de 0,09 ppb @ Tau = 1 s et de son vieillissement de seulement 0,03 ppb par jour, ce produit est comparable aux produits au rubidium de norme courante.&nbsp;<\/p>\n<p>Entre autres applications, ce dispositif est id\u00e9al pour la synchronisation ou comme horloge de r\u00e9f\u00e9rence des communications par satellite et s\u00e9curis\u00e9es, les syst\u00e8mes de navigation, mais aussi pour les applications de calcul de temps dans les secteurs de la finance, des services publics, de la s\u00e9curit\u00e9 et des t\u00e9l\u00e9communications.&nbsp;<\/p>\n<p><a href=\"http:\/\/\u00a0www.we-online.com\">www.we-online.com<\/a><br \/>\n<a href=\"http:\/\/www.iqdfrequencyproducts.com\">www.iqdfrequencyproducts.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>IQD, partie du groupe W\u00fcrth Elektronik eiSos, pr\u00e9sente sa nouvelle horloge atomique sur puce (CSAC), ICPT-1. L\u2019ICPT-1, qui utilise le principe du pi\u00e9geage coh\u00e9rent de population (CPT) pour obtenir une fr\u00e9quence tr\u00e8s stable.<\/p>\n","protected":false},"author":9,"featured_media":39259,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-39258","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Horloge atomique sur puce ...<\/title>\n<meta name=\"description\" content=\"IQD, partie du groupe W\u00fcrth Elektronik eiSos, pr\u00e9sente sa nouvelle horloge atomique sur puce (CSAC), ICPT-1. 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