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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 area under the graph can be performed. This operating
mode can be used to partially characterise a sample. Touch the Spectrum icon on the main menu to enter this
measurement mode.
7.1
Method Set up
The parameters which can be entered in this measurement mode are start and end wavelength, scan interval and
measurement mode. Once all the required parameters have been entered a calibration can be performed.
7.1.1
Setting Start and End Wavelengths
Model 7410 can perform measurements from 320nm to 1000nm; model 7415 can perform measurements from
198 to 1000nm. To adjust the start wavelength, touch
and use the keypad to enter the required
wavelength. Touch
to apply the entered wavelength and return to the method set up. The end wavelength
can be adjusted in the same way.
The start and end wavelengths must be different. If the same value is entered an error message will be displayed.