Metrohm NIRS XDS Interactance OptiProbe Analyzer - Manual (Page 43)

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7
Instrument Diagnostics
Vision provides diagnostics for instrument setup, which must be performed before use of the
instrument for analysis. Following these diagnostics, another set of diagnostics is provided to
evaluate the ongoing performance of the instrument. These are explained in the sections that follow.
7.1 Setup Diagnostics
Before use of the XDS Analyzer, some steps must
be performed using Vision Software.
The “Options” for a given Project may be set. To
reach this menu, click on Configure, Options. The
menu shown at right is the default set of
selections. A brief explanation follows:
Instrument must stabilize before data
acquisition:
This prevents spectral acquisition if the instrument
is cold.
Performance Test must pass before data
acquisition:
This prevents the user from taking data on a non-
functional instrument.
Run performance test after wavelength
linearization:
Forces user to run test sequentially. This is not
necessary with XDS.
Use Auto-Linearization:
Maintains correct wavelength registration automatically, using internal wavelength materials to keep
instrument in precise adjustment over time.
Reference Standardization:
Used to create a virtual 100% reflectance reference, using a traceable photometric standard. This is
explained in the next section. Required for Calibration Transfer.
Blank Correction:
This method is only with XDS Rapid Liquid Analyzer. Do not select.
Master Standardization:
This method is not used with XDS. Do not select.
Use Instrument Calibration (XDS only)
This is a method to adjust the instrument wavelength profile to an external, traceable wavelength
standard. It is checked as a default for XDS. Required for Method Transfer.
Use Window Correction: