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Interrogates a CCD shutter to see whether it is open.

2=to: 2!:}Format: ?OPEN .

2=to: 2!:}Comments: If the response is -1 then the shutter is open; if it is 0 then the shutter is closed. Other responses indicate a problem with the shutter.

manuals store
Wed Sep 17 12:36:20 BST 1997