HP Data Explorer 4 Basic Settings (spectrum data only)

Chapter 3 Peak Detection and Labeling

Basic Settings (spectrum data only)

Table 3-2describes the parameters in the Basic Settings tab of the Spectrum Peak Detection Setup dialog box (see Figure 3-4 on page 3-14).

Default peak detection values are listed in Section 3.7, Default Peak Detection Settings.

	Table 3-2 Basic Settings Tab Parameters (Spectrum Data Only)
	Parameter	Description
	Global Thresholds
	%Base Peak	Specifies a percentage of the base peak intensity as the
	Intensity	threshold value.
	NOTE: This	To be detected, peaks must be above this threshold and
	parameter was	above the %Max Peak Area value.
3	previously named	If you override Global Thresholds by selecting Use Advanced
	Peak Threshold%
		Settings (described on page 3-23),the software ignores
	and Base Peak
		Global Thresholds and uses the %Base Peak Intensity,
	Relative%.
		%Max Peak Area, Minimum Area, and Minimum Intensity
		thresholds set on the Advanced tab (described on page 3-28)
		to detect peaks for the selected detection range.
		NOTE: If you are examining Voyager data that contains a
		Low Mass Gate spike, the software may identify the Low
		Mass Gate spike as the Base Peak. Truncate the data as
		described in Section 5.9, Truncating a Spectrum, to eliminate
		the Low Mass Gate spike and correctly identify the Base
		Peak.
		Hint: For most Voyager applications, leave this parameter
		set at 0 and adjust the %Max Peak Area.
		Continued

3-22 Applied Biosystems