Emerson Process Management 3-9000-745 manual Has a slight slope. Default

MON20/20 Software for Gas Chromatographs	User Manual
SEPTEMBER 2010	3-9000-745

The following table describes the integration-related parameters that are available on the timed events window.

Parameter	Description
TEV Type	The type of integration event. You have the following options:
	•	Inhibit: Set to Off to start a peak; set to On to end a peak.
	•	Integrate: Set to On and Off to set a region in which the area under the trace is
		computed as a peak regardless of peak onset discovery. The resulting area is added to
		the raw data as a peak with the retention time set to the Integration Off time.
	•	Summation: Set to On and Off to set a region in which the area of all peaks found will
		be added together to create a single, larger, peak. The peaks that contribute to the
		summation are marked as partial peaks in the raw data table, and the summation
		total is added to the raw data as a new peak with the retention time set to the
		Summation OFF time.
	•	Slope Sens: The peak starts when the slope of six consecutive points is greater than
		the slope sensitivity value that is displayed in the Value column; the peak ends when
		the slope of six consecutive points is less than the slope sensitivity value that is
		displayed in the Value column.
	•	Peak Width: Each point displayed on the graph represents the average of N raw data
		points, where N is the value displayed in the corresponding Value column.
	•	Single Base: Determines how the baseline is drawn under a peak.
		• Off: The baseline is drawn from the point of peak onset to the point of
		peak termination. This is not necessarily horizontal and if fact usually
		has a slight slope. (Default)
		• Bgn: Draws a horizontal baseline from the point of peak onset to a point
		above or below the peak termination.
		• End: Draws a horizontal baseline from a point above or below the peak
		onset to the point of peak termination.
	•	Fused Ovrrd: Determines how the baseline is drawn when two or more peaks are
		'fused' together.
		• Off: A single baseline is drawn from the onset of the first peak of the
		fused group to the termination of the last peak of the group. (Default)
		• On: Causes a separate baseline to be drawn for each peak in the fused
		group.
	•	Negative Peak: Determines whether peak detection will detect inverted peaks, which
		are peaks that point downward from the baseline. At any given moment we can
		detect positive or negative peaks but not both at once.
		• Off: Detect positive peaks. (Default)
		• On: Detective negative peaks.
	•	SW Auto Zero: Re-baselines the trace at the specified time for the specified detector.
		Used after a FID gain change event or a spectrum gain change event.
	Note: The Single Base and Fused Override events can act together to produce
	multiple horizontal baselines, at different heights, for a fused peak group.

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