Gain Window
Sets the width (in channels) of the upper and lower sampling windows on either side
of the gain reference peak.
Gain Spacing
Sets the spacing (in channels) between the upper and lower sampling windows. The
windows should be placed so that a shift in the reference peak reflects a significant
change in count rate through the window. For broad peaks, the spacing should be set
so that the windows’ edges are not on the flat part of the peak.
Gain Rate Div
The Gain Rate Divisor sets the count rate dividers at the input to the correction register
for Gain. For high count rate reference peaks, increasing the Divider value will smooth
out the correction applied to the system and minimize any peak broadening. This con-
trol can only be set via the MID Editor.
Gain Ratio
The Gain ratio value is interpreted by the stabilizer as the ratio to maintain between
the two gain windows (ratio = upper window / lower window). For instance, a value of
1 would be appropriate for a pure Gaussian peak.
Zero Centroid
Sets the centroid (in channels) of the reference peak at the low end of the spectrum for
zero intercept stabilization.
Zero Window
Sets the width (in channels) of the upper and lower sampling windows on either side
of the zero reference peak.
Zero Spacing
Sets the spacing (in channels) between the upper and lower sampling windows. The
windows should be placed so that a shift in the reference peak reflects a significant
change in count rate through the window. For broad peaks, the spacing should be set
so that the windows edges are not on the flat part of the peak.
Zero Rate Div
The Zero Rate Divisor sets the count rate dividers at the input to the correction register
for Zero intercept. For high count rate reference peaks, increasing the Divider value
will smooth out the correction applied to the system and minimize any peak broaden-
ing. This control can only be set via the MID Editor.
Zero Ratio
The Zero ratio value is interpreted by the stabilizer as the ratio to maintain between the
two zero windows (ratio = upper window / lower window). For instance, a value of 1
would be appropriate for a pure Gaussian peak.
Chapter 3 - Genie™ 2000 User Interface and Controls
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Model 9660-9660A ICB Digital Signal Processor