HP Data Explorer 4 manual 378

Chapter 9 Troubleshooting

Table 9-10 Peak Detection and Labeling Troubleshooting—Mariner and Voyager

		(Continued)
	Symptom	Possible Cause	Action
	Peaks are not detected or	Analyzing masses above	Increase Mass Resolution
	labeled	20,000 Da	setting in Peak Detection
	(continued)		Setup. See Section 3.2.2,
			Strategy for Voyager Peak
			Detection.
		%Max Peak Area set too	Decrease. See
		high	Section 3.2.2, Strategy for
			Voyager Peak Detection.
		%Base Peak Intensity set	Set to 0. Adjust %Max
		too high	Peak Area to optimize
			peak detection for Voyager
			data. See Section 3.2.2,
			Strategy for Voyager Peak
			Detection.
	When creating a custom	The Chromatogram	Make sure the Spectrum
	label for a spectrum, you	window was active when	window is active before
	right-click-drag across a	you selected Peak Label	selecting Peak Label from
9	peak to identify the peak,	from the Display menu	the Display menu.
	and an extracted ion
	chromatogram is created
	instead

9-16 Applied Biosystems