Ocean Optics DTS - Manual (Page 42)

Chapter 5
5-6 Polychromix DTS TM Near-Infrared Spectrometer
Operator’s Manual
Document Number 04-91-0201-00 Rev A
5.3 Performing Mathematical Manipulations on the
Spectra
The Polychromix SpectralCode application software program provides the
ability to perform a variety of mathematical operations on spectra stored in
the registers, including the addition, subtraction or division of two spectra. In
this section, we will describe how to divide one spectrum by another. The
general principle for all operations is identical.
To perform a mathematical operation:
a) Ensure that the spectra on which the processing is to be performed have
been transferred to registers 1 and higher (data in register 0 cannot be
processed via this procedure).
b) Go to the bottom tool bar (Figure 5-6) and open the first field to present a
list of the registers that contain data available for processing.
Figure 5-6: Mathematical Processing Fields
c) Select the desired register and open the second field, which presents a
list of the available operators (+, -, /).
d) Select the desired operator and open the third field, which again presents
a list of the registers that contain available data.
e) Select the desired register. A typical operation might be 1/2, indicates that
spectrum 1 should be divided by spectrum 2.
f) Press the button to perform the operation. The result will be displayed
in the spectral area and will be indicated in the PlotLegend dialog box as
Math Result (Figure 5-7). This spectrum can be moved or renamed in the
same manner as any other spectrum.
Figure 5-7: Result of a Mathematical Operation