The filter assembly is electromechanically actuated. During wavelength calibrations it moves into the light path.
The filter assembly has two filters installed and is processor-controlled.
|
OPEN |
nothing in light path at λ < 370 nm |
|
CUTOFF |
cut off filter in light path at λ > 370 nm |
|
HOLMIUM |
holmium oxide filter for wavelength check |
|
SHUTTER |
for measurement of dark current of photo diodes |
A photo sensor determines the correct position.
base-id: 3283492235
id: 3283492235