Agilent 5110/5100 ICP-OES Service Manual Agilent Restricted 145
4 Removal/ Installation, Replacement and Adjustment
Optical alignment
Camera rotation
The rotation adjustment is used to position the camera assembly diagonal linear arrays in the
proper axis. The skewed arrays are positioned at the correct angle by rotating the camera chip in
the camera assembly housing.
The rotation software page is based on two argon wavelengths that are positioned at the left
and right extremes of DLA 21. The selected wavelengths are Ar 706.722 and Ar 696.543.
Access to the camera assembly locking screws, camera rotation access plugs and camera
assembly rotation adjustment screws requires the removal of the camera assembly outer box
cover and polychromator top cover. The appropriate instrument covers must also be removed
to allow access to the polychromator outer box assembly.
Polychromator and camera alignment will change as the polychromator temperature stabilizes.
adjustment to the polychromator and camera assemblies should only be done when the
polychromator temperature is 35°C as reported by the instrument software.
Figure 16. CCD DLA rotation structure
The rotation page samples DLAs 20 and 22 above and below the theoretical positions of the two
primary argon wavelengths. The raw intensity from the pixels above and below the primary
wavelengths are then used to calculate ratios. The ratios are displayed on the rotation page.
When both displayed ratios are 1.00 (+\- 0.1) the rotation is set correctly.
1 Remove the polychromator access cover from the side of the instrument.
2 Access the focus mirror adjustment screws by lowering the insulation flap on the
polychromator outer box insulation.
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