Jenway Genova Nano German - Manual (Page 36)

Depending on how many data points have been measured either a partial scan and all the post
measurement tools will be displayed, or the instrument will return to the operating menu with no
measurements saved.
Once the scan is completed the spectrum will be shown on
the screen. If automatic scaling was selected the y-axis will
automatically be re-scaled.
7.5 DATA ANALYSIS
The post measurement tools icons are displayed on the
screen following the completion of the scan. The tools
include peaks and valleys threshold, peaks and valleys
table and spectral points analysis. The peaks and valleys
table displays all the detected peaks and valleys above the
selected threshold value.
The spectral points analysis function enables points to be selected from the scan to analyse absorbance
or % transmittance at selected wavelengths.
7.5.1 Peaks and Valleys Threshold
This function enables the peaks and valleys threshold to be
set at 1, 5, 10% or turned off. To select the threshold value
press the key adjacent to the peaks and valleys threshold
icon. Repeat presses of the key will cycle through 1%, 5%,
10% and off.
If the peaks and valleys are turned off this is represented
by the peaks and valleys icon with a cross in place of a
number. When the peaks and valleys threshold is switched
off the peaks and valleys table icon is not displayed. If a 5%
threshold is selected then only peaks and valleys above this
threshold will be displayed in the peaks and valleys table.
The threshold is calculated as:
7.5.2 Peaks and Valleys Table
This function displays all the detected peaks and valleys
above the selected threshold, in tabular form. To open the
table press the key adjacent to the peaks and valleys table
icon. If the peaks and valleys threshold is switched off this
icon is not displayed.
wavelenth range
Abs or % T range
threshold
percentage
34