Multi-mode signal offset in time-of-flight mass spectrometry
US6794643B2 · kind B2 · utility
18Cited by
8References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 23, 2003 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Mar 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system and method of processing signals generated at a detector of a mass spectrometer prior to signal conversion in which a pre-ADC offset is applied to the signals that is adjustable in polarity and magnitude in accordance with a user-selected mode. According to a first mode, a positive offset is applied to the signals to improve quantitation accuracy and in a second mode, a negative offset is applied to the signals to improve resolution and mass assignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.