Metrohm NIRS XDS MasterLab Analyzer - Manual (Page 89)

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7.2 Evaluation Diagnostics, Tablet Transmission
Evaluation Diagnostics are used to verify that the instrument is operating within allowable
parameters. These tests should be run approximately once per week, or according to your company
procedures.
This information is meant to guide the user through the tests in an expeditious manner. A more
complete description of these tests is given in the Vision Manual, in the Diagnostics section. A
discussion of the theory and interpretation of results is provided in the Vision manual.
7.2.1 Performance Test
Performance Test is a comprehensive test of instrumental performance, and is the final assurance that
the instrument is ready to run samples. The key items verified during this test are:
• Instrument Noise in each of four wavelength regions
• Internal Wavelength Performance (wavelength positions on non-traceable, internal reference
materials.)
• Internal Wavelength Precision (Repeatability)
• Detector Gain
The test is initiated as follows:
Select Performance Test from the
Diagnostics menu. Click on Run
Performance Test.
If asked to confirm Instrument
Configuration, click “OK”.
As the test runs, a screen like that shown below is displayed. This screen shows the first of ten sets of
noise runs.