Mass spectrometer

Details Mass spectrometer Mass spectrometer

H - Electricity

01

J

H01J 49/00 (2006.01)

Patent

CA 2687181

A mass spectrometer is disclosed wherein a signal output from an ion detector is digitised using an Analogue to Digital Converter. A background or baseline level is dynamically subtracted from the digitised signal whilst the time of flight data is still being acquired. A threshold is also applied dynamically to the digitised signal in order to reduce electronic noise.

L'invention concerne un spectromètre de masse selon lequel une sortie de signal provenant d'un détecteur d'ions est numérisée en utilisant un convertisseur analogique-numérique. Un niveau de fond ou de base est soustrait dynamiquement du signal numérisé alors que la durée des données de vol est encore en cours d'acquisition. Un seuil est également appliqué dynamiquement au signal numérisé afin de réduire le bruit électronique.

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