CI6X SERIES SPECTROPHOTOMETER
13
Changing the Aperture Setting (Ci64/Ci64UV only)
If available, the instrument can take measurements using either a 4 mm aperture or 8 mm
aperture. Simply rotating the aperture knob and switching target windows changes the setting.
1. Turn the instrument over and rotate the knob to the left for 8 mm (circle indication) setting and
to the right for 4 mm setting. The display indicates the switch position (refer to the display
screens below).
2. Using your fingers, press the target window out from the topside of the shoe. Press against
the ring and not the clear window.
3. Note the alignment of the new window and snap it into place from the bottom side of the shoe.
4. Calibrate the instrument to the new aperture setting.
An aperture icon appears in the header bar of the display to indicate the switch position.
4 mm Switch Position 8 mm Switch Position
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