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Title: Methods for automatic trigger threshold adjustment

Methods are presented for adjusting trigger threshold values to compensate for drift in the quiescent level of a signal monitored for initiating a data recording event, thereby avoiding false triggering conditions. Initial threshold values are periodically adjusted by re-measuring the quiescent signal level, and adjusting the threshold values by an offset computation based upon the measured quiescent signal level drift. Re-computation of the trigger threshold values can be implemented on time based or counter based criteria. Additionally, a qualification width counter can be utilized to implement a requirement that a trigger threshold criterion be met a given number of times prior to initiating a data recording event, further reducing the possibility of a false triggering situation.
Authors:
;
Publication Date:
OSTI Identifier:
1127093
Report Number(s):
8,676,540
11/954,024
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Research Org:
SNL (Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION