The optional lter wheel accessory is controlled through the Filter Wheel Control:
The Filter Wheel Control indicates the currently selected lter and provides details of the lter at the bottom of the
control. The lter positions and their details are stored in non-volatile memory (EEPROM) in the instrument and should
be input by the user on rst use of the system).
To input or modify the details of a particular lter:
1. Position the mouse cursor on the required lter position.
2. Right-click and a lter details input box will appear.
3. Enter the lter details (up to a maximum of 9 characters)
4. Left-click when complete.
The operation of the lter wheel is very similar to that of the grating turret control. Positioning the cursor over each lter
position changes the cursor to a pointing hand and details about that lter are displayed.
Note: If the information is not automatically displayed, simply move the cursor out of the lter wheel control box
and then back onto the required lter to refresh the information. To change the lter, simply position the mouse
cursor on the required lter and left-click. The hardware responds by rotating the lter wheel and the lter wheel
graphic in the software control rotates to reect the change. The accessory may be reset by clicking the reset
button. On completion of a reset the lter wheel defaults to the FILTER 1 position.
Refer to Section 3.3.1 for details on how to change lters.
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