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P a g e
Peak Detect on Zoom:
Determines whether peaks are
re-assessed and tabulated when the user zooms into a
region of the wavescan. If off, it leaves the peak
detection as determined on the un-zoomed display.
Sort peaks by…:
Determines the sequence that
peaks are reported by. Can be wavelength, peak
height or peak width.
Draw Peaks:
Switches display of peak cursors on and
off. These show vertical dashed lines displaying the
measured peak height and horizontal dashed lines
showing the peak width
Pressing Cancel
ignores the selection,
pressing
accepts them.
Add Peak (Shortcut Button 5):
Adds a used defined peak at the current cursor
position. The entry is then displayed in inverse
colouring to discriminate between user defined peaks
and auto-detect peaks. When the cursor is positioned
over the user defined peak a legend “User Defined
Peak” appears at the top of the graph. The option then
changes to Delete Peak to enable the user to remove
the peak.
Note: Storing a method at this stage will save these
user defined wavelengths, each time method is run
Absorbance value at these wavelengths is reported.
Graph Scale (Shortcut Button 6):
This enables the user to set up a defined graph by
defining the limits in either or both of the x and y axes.
Zoom mode:
This sets up the operation of the Zoom keys (up and
down arrows). “x & y axes” expands the display around
the cursor measurement point, whilst the other options
select the absorbance or wavelength axes
respectively. With x or y axis limits set to on, zooming
out will only be permitted to the set limits.
x/y axis limits:
Setting “x (or y) axis limits” to “On” activates the start
and finish points of the desired graph to user defined
specific wavelengths and/or absorbance values.
Pressing Cancel
ignores the selection;
pressing
accepts them and displays the
required graph.
