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Section II.
Instrument
Setup
2.1 General Description:
The instrument is shipped completely assembled, tested and ready for immediate installation. If
the instrument is to be stored before use, contact Princeton Instruments for storage instructions.
For shipping purposes, some optical components are covered, and mechanical components
are tied or placed in specific positions. The following procedure is recommended to prepare
the instrument for use.
2.2 Unpacking and Inspection:
Carefully unpack and examine both the VM-502 monochromator and the scan controller
unit. If there is any indication of physical damage, report the condition immediately to
the carrier and Princeton Instruments. Save all packing material.
2.3 Removal of Protective Cover and Shipping Ties:
To remove the protective cover on the optical component and the shipping tie, the instrument
must be vented and the cover removed. This should be done only by personnel familiar with
optical surfaces and instrumentation.
1. Locate the air inlet valve in the instrument housing. Remove the protective cap.
Connect the air inlet valve to a dry nitrogen tank if possible. Open the air inlet valve
slowly by rotating the handle until it is in line with the valve body.
2. Remove the instrument cover by rotating the two cover knobs until they are loose, and
lift off the cover.
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CAUTION: THE OPTICAL SURFACE IS NOW EXPOSED--DO NOT TOUCH, TALK, OR
BREATHE OVER THE OPTICAL SURFACES!
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3. If the instrument is equipped with a movable diverter mirror, it is held in position with
rubber bands for shipment. Locate the rubber bands holding the movable diverter
mirror in position; cut and remove these rubber bands.
4. A protective cover is attached to the grating mask with rubber bands. Verify that all
rubber bands are removed from the chamber. Remove the shipping grating cover.
NOTE: Save this cover to protect the grating if interchanging gratings.
5. Replace the instrument cover after checking the o-ring and mating surface for
cleanliness.
NOTE: If the instrument has a movable diverter mirror, make sure that the diverter
mirror and the control knob on the cover align before replacing the instrument cover.
Refer to Section 3.5 for more information
6. Close the air inlet valve by rotating the handle 90º to the valve body.