Metrohm NIRS XDS Process Analyzer – DirectLight/NonContact - Manual (Page 62)

60 ▪▪▪▪▪▪▪
Place the standard on the probe as shown. Always
have the probe pointing upward, with the
standard resting on it as shown. This assures
uniform contact between the probe and the
standard.
Vision displays a message to indicate that
Wavelength Linearization has begun.
The wavelength positions of these peaks appear as shown.
The scale of this display is marked in encoder pulses, which do not relate to nanometers directly.
From the peaks, a linearization is performed, which allows assignment of nanometer values. (Actual
spectral shape depends on fiber configuration.)
The spectrum shown above does not exhibit any noise effect from fiber attenuation. Actual fiber
optic probe spectra will exhibit noise at the lower and upper ends of the spectrum, based upon
length of fiber used. This is normal.