Operating Progeny Analyzers
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Performing Scans
Progeny Analyzers have two basic modes of operation—Analyze and Application. In both modes, the
instrument starts by collecting spectral data from a sample of a substance.
Analyze mode
The instrument compares the detected data to its Master Library of spectral profiles and then calculates
a Correlation Coefficient (CC) value for each comparison. After making CC comparisons to all spectral
profiles in the library, the instrument identifies the substance named in the spectral profile with the
highest CC value. While the Top Match is returned, the user can select up to 5 closest matches for a
sample. This extra data lets you evaluate results and compare possible alternative matches. Because
Analyze mode uses the instrument’s Master Library of spectral profiles and analyzes the data with
selectable scan properties, it is most useful for identifying samples of unknown substances.
Application mode
The instrument collects the spectral data using a specified collection of pre-set instrument settings and
custom libraries. The application allows you to search through only those spectral profiles you have
validated for certain situations. As a result, applications are most useful for either identifying or verifying
samples from known collections of substances.
In the Application mode the sample is compared only to a sub-library of spectral profiles to calculate the
correlation value. Provided that the top match(es) are greater than the cutoff correlation a result is
returned on the instrument. The user can set the output of the instrument to be either Identification
mode, which returns the closest match from the library to the sample, or to Verification mode which
requires the user to specify the material and a Pass or Fail will be returned as a result.
In addition to these two modes, organizations may need to ensure that the process of collecting sample
spectral data is routinely replicable. To make this possible certain configurations of the instrument can
run Batch applications. When available, this feature enables organizations to standardize the process of
collecting sample data for large-scale substance identification or verification purposes.
For more information about setting up Batch collection and running Batch applications, see “Batch
Collection.”
Scanning with Analyze
When scanning an unknown substance in Analyze mode your instrument identifies the closest library
match to the sample. To do this it collects raw spectral data, processes that data, compares the results
to each spectral profile in the instrument’s Master Library, and calculates a Correlation Coefficient (CC)
value for each profile.
Once analysis is complete the instrument generates a scan results report that includes:
Colored graph with both the detected spectrum and the spectrum from the matching profile.
Up to five Library Matches (when Max # of Search Results is enabled) with each match showing
the substance name and information listed in the Master Library spectral profile.
After generating the report, the instrument displays the on-screen results and saves the results report to
the instrument’s results archive for follow-up review.
1.
From the Main screen select
(Scan) to display the scan options (Figure 14).
Содержание Progeny
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Страница 74: ...Advanced Options 67 1006232_RevD Figure 40 Sample Application...
Страница 106: ...Export and Import Settings 99 1006232_RevD Figure 70 Progeny Settings Screen...
Страница 111: ...Appendix B Nose Cone Positions 104 1006232_RevD Appendix B Nose Cone Positions...
