Princeton 4411-0097 ユーザーズマニュアル

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Appendix D 
Visible <-> Open Nose Change 
Instructions 
Introduction 
The PI-MTE camera is shipped with a visible nose on the front of the camera. The 
visible nose typically includes a test lens and is designed to protect the camera during 
shipment and to allow you to verify system operation in a non-vacuum environment. 
Because you will probably be using the camera in a vacuum chamber, you will need to 
replace the visible nose with the open nose before mounting the camera in the chamber. 
Replacing the Visible Nose with the Open Nose 
The PI-MTE cameras are normally shipped with the visible nose and elastomer gasket 
installed. This nose, containing a quartz window, allows the camera to be operated in a 
non-vacuum environment and protects the CCD array from damage and contamination. If 
the camera is to be used in a vacuum chamber, the visible nose will have to be replaced 
by the open nose. This operation must be performed in a cleanroom environment. 
Read through the whole procedure before attempting it. 
Whenever the open nose is on the camera, EXTREME CAUTION must be used to 
prevent damage to the CCD array. To prevent contamination, only handle a PI-MTE with 
an open nose in a cleanroom environment. If the camera must be removed from a 
cleanroom environment, cover the array opening.  Note that the camera is even more 
vulnerable with no nose in place. 
Because the CCD array and/or the bond wires could be damaged when performing this 
operation, be very careful when replacing the nose. Damage to the array and/or bond 
wires during such an operation is not covered under warranty. 
1.  Place the PI-MTE with visible nose in a 
cleanroom environment. 
2.  Position the camera with the Vacuum Valve at 
the top. 
3.  Using a screwdriver that closely fits the notches 
in the valve screw, slowly vent the camera by 
turning the valve screw counterclockwise. If the 
screwdriver is too small, the valve screw could be 
damaged. 
WARNINGS!