User Manual

SECTION 7 – Spectrum

The spectrum measurement mode enables measurements of absorbance or % transmittance over a

range of wavelengths to be performed. The absorbance or % transmittance at each wavelength is

plotted graphically. Post measurement tools such as peaks and valleys analysis and spectral points analysis

can be performed. This operating mode can be used to partially characterise a sample.

7.1 MODE SPECIFIC PARAMETERS

The spectrum operating menu enables measurement

parameters to be changed. The utility toolbar on the left

hand side of the screen enables access to printing, print

setup options, results, methods and autologging options.

For more details on the different functions of the utility

toolbar refer to section 17.

The scan settings icon enables the graph y-axis, absorbance or % transmittance operating mode, start

and end wavelengths and scan interval to be set. The peaks and valleys threshold icon enables the peaks

and valleys threshold to be set. The peaks and valleys table icon enables the peaks and valleys of the

scan to be viewed in tabular form. The spectral points analysis icon enables points to be selected from

the scan for post measurement analysis.

Fig 7.1.1 - Operating Menu – Post Measurement

7.2 METHOD SETUP

In this measurement mode all of the method setup

parameters are accessed through the scan settings menu.

To open the scan settings menu press the key adjacent to

the scan settings icon in the operating menu.

Operating Menu

Print/print settings

Results selection menu

Methods selection menu

Autolog menu

Baseline

scan

Scan sample

Scan settings

Peaks and valleys threshold

Peaks and valleys table

Peaks and valleys threshold