Filters may be added, removed or replaced in the lter wheel via the lter access hole on the front face of the lter wheel
housing. If this is necessary, please refer to the following procedures:
3.3.1
Access to the lters may also be gained via the lter access hole located on the front face of the lter wheel.
1. Remove the lter wheel access cover by unscrewing it.
2. The lter is held in place by a retaining ring. To remove the lter retaining ring, use the supplied lter insertion/
removal tool.
NOTE: The lter position accessible via the access hole has an ID number 3 less than the lter position in the
optical path:
Desired lter position 1 2 3 4 5 6
Filter position to select in software 4 5 6 1 2 3
3. Using the software select the lter position needed to bring the required lter position into place as shown in
the table above e.g. if you need to access lter position 4, you would select position 1 in the software.
4. Install the lter and use the lter insertion/removal tool to secure it in place.
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