PerkinElmer Spotlight 400 Series, User Manual

Page: 80 / 120

80 . Spotlight 400 Series User’s Guide
Fitting the ATR Crystal Holder to the Imager
1. Switch off the imager at the electricity supply.
2. Stop any laser radiation from entering the imager by switching the internal beam of the
spectrometer to the internal sample compartment.
For further information on how to do this, see the Spectrum software on-screen Help.
3. Hold the crystal assembly under the upper cassegrain.
Be careful not to change the alignment of the two adjusting levers.
4. Fit the two adjustment thumb-nuts (Figure 31).
The assembly is aligned if the adjusting levers have not been moved.
5. Direct the infrared beam to your imager.
6. Switch on the imager.
ATR cassegrain
ATR crystal holder
Crystal assembly
Knurled
thumb-nut
Figure 31 The ATR crystal holder and ATR cassegrain