User manual

104 1200 Series Variable Wavelength Detector User Manual
8Maintenance
Holmium Oxide Test
This test verifies the calibration of the detector against the three wavelength
maxima of the built-in holmium oxide filter. The test displays the difference
between the expected and measured maxima. Figure 36 shows a holmium test
spectrum.
The test uses the following holmium maxima:
• 360.8 nm
• 418.5 nm
• 536.4 nm
When to do the Test
• after recalibration,
• as part of the Operational Qualification/Performance Verification
procedure, or
• after flow cell maintenance or repair.
Interpreting the Results
The test is passed successfully when all three wavelengths are within ± 1 nm of
the expected value. This indicates the detector is calibrated correctly.
NOTE
See also “Declaration of Conformity for HOX2 Filter" on page 129.
NOTE
The test results are currently available on the Agilent ChemStation only.
ChemStation revisions below B.01.xx show a limit of ± 2 nm. It should read ± 1 nm. If the
test shows a value greater than ± 1 nm, perform a recalibration.