PerkinElmer Spectrum Two HATR User Manual page 16

16 . Spectrum Two HATR User's Guide
NOTE: Take care when adjusting mirrors 2 and 3. They are very sensitive to rotational
adjustment.
8. Place the top plate on the accessory.
9. Look at the crystal from above, and gently adjust mirror 2 until the crystal is illuminated
as brightly as possible.
10. Place a card between the exit port of the HATR and the window on the right of the
sample compartment.
11. Adjust mirror 3 until the movable part of the beam is centered on the exit window.
12. Remove the card from the HATR.
13. Remove the white-light alignment tool from the baseplate.
14. Select Monitor from the Measurement menu.
The Live tab is displayed.
15. Gently adjust mirror 2, using a wrench, until you obtain an energy maximum.
16. Repeat for mirror 3.
NOTE: You may need to adjust mirror 2 and mirror 3 several times to find the optimum
position.
17. Record the maximum throughput energy and then click Halt.
18. Compare the maximum energy with that recorded at the beginning of the installation
procedure (Step 4 on page 11).
If the energy throughput of the HATR is 15–25% of the energy throughput of the open
beam, no further adjustments are needed.
If the energy throughput of the HATR is lower than 15% of the energy throughput of
the open beam, repeat the alignment procedure.