User`s guide

Chapter 5 Optimizing Instrument Settings

5-34 PerSeptive Biosystems

Save Conditions

(continued)

• Save all spectra that pass acceptance criteria—

Each spectrum that meets the specified acceptance

criteria is saved in a separate data file. Acquisition is

performed on the same search pattern position* until

Acceptance Criteria fail. The number of .DAT files

created is equal to the number of spectra that pass

acceptance criteria. Acquisition continues until the

Number of Spectra to Acquire have been acquired or

the end of the search pattern is reached. All search

pattern positions may not be analyzed.

NOTE: In this mode, acquisition moves to the next search

pattern position only if acceptance criteria fail.

Example: If Number to Acquire=5, Number of

positions in .SP=7, the number of positions analyzed

and the number of .DAT created is determined by

whether acceptance criteria fail:

• If all fail, 7 positions analyzed (total number of positions

in .SP), no .DAT created

• If the first position fails, but all remaining pass,

2 positions analyzed, 5 .DAT created

• If the first and second positions fail, but all remaining

pass, 3 positions analyzed, 5 .DAT created, and so on

• If acceptance criteria never fail, 1 search pattern

position analyzed

* If Use Automated Sample Positioning is disabled, acquisition is performed on the positions you

manually select.

Table 5-10 Automatic Control Parameters—Spectrum Accumulation (Continued)

Parameter Description