US 12,230,487 B2
Determining the average frequency of a series of pulses
Leanne Verster, Bremen (DE); and Jonas Pistor, Bremen (DE)
Assigned to Thermo Fisher Scientific (Bremen) GmbH, Bremen (DE)
Filed by Thermo Fisher Scientific (Bremen) GmbH, Bremen (DE)
Filed on Dec. 29, 2021, as Appl. No. 17/564,314.
Application 17/564,314 is a continuation in part of application No. 17/486,605, filed on Sep. 27, 2021, abandoned.
Claims priority of application No. 2015555 (GB), filed on Oct. 1, 2020.
Prior Publication US 2022/0122826 A1, Apr. 21, 2022
Int. Cl. H01J 49/00 (2006.01); H01J 49/42 (2006.01)
CPC H01J 49/0027 (2013.01) [H01J 49/421 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of determining in a spectrometer an average frequency of a series of ion detection pulses during a measurement interval, the method comprising:
determining the duration of an auxiliary interval, wherein the auxiliary interval overlaps the measurement interval,
the auxiliary interval begins at the last pulse preceding the measurement interval, and
the auxiliary interval ends at the last pulse of the measurement interval;
determining the number of pulses during the auxiliary interval; and
dividing the number of pulses by the duration of the auxiliary interval so as to produce the average frequency.