NanoPhotometer
®
P-Class User Manual
Version 2.1 Page 44 / 70
Menu (select using key pad numbers)
Peak Detection (Shortcut button 4)
Menu (select using key pad numbers)
1) Return to parameters screen.
2) Transfer the results via selected Output Options / Printer
settings.
3) Toggle between Absorbance and %T mode.
4) Displays Peak Detection Parameter Screen. See description
below.
5) Manually adds a peak position to the peak table in the results
screen at the position set by the cursor. If the cursor is
returned to this position the legend “User Defined Peak” is
displayed at the top of the scan and this option changes to
Delete Peak...
6) Displays Graph Scale Parameter Screen. See description
below.
7) Sample number – add a prefix to the sample number and
reset the incrementing number to the desired value.
8) Save method – use the left and right arrows to select a folder
to store in (Favourites/Methods 1-9), press the down arrow
and enter name.
9) Open Output Options/Printer settings, possibility to change the
Output settings within the method as described in 7.3 Output
Options / Printer
Exit Menu/Options by pressing Escape , or wait.
Peak Detection (Shortcut button 4)
Auto Detect Peaks: Turns on and off the automatic peak
detection. The following options determine how peaks are
detected:
Minimum Peak Height: Minimum height the peak has to be above
the higher of the two adjacent minima for the peak to be
detected.
Minimum Peak Width: Minimum width of the peak as determined
by the difference in wavelength between the highest of the two
adjacent minima and the opposing intersection of that higher
minimum level and the peak profile. (See the screen displayed
below).
Peak Detect on Zoom: Determines whether peaks are re-assessed
and tabulated when the user zooms into a region of the
wavescan. If Off, 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 OK accepts
them.
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