AUTOFILT(OPCS) Optical Printer Control System AUTOFILT(OPCS) NAME autofilt - enable/disable the auto-wedging filter wheel USAGE autofilt [-nohome] [on|off] EXAMPLES autofilt on # Enables auto-filter wheel movement, # sends the filter wheel to home position. autofilt off # Disables auto filter wheel. # sends filter wheel to home position. autofilt # Prints if autofilt mode is ON or OFF autofilt -nohome on # Enables auto-filter wheel movement, # does NOT home or reset counter to zero. DESCRIPTION Sets up the filter wheel to move automatically each time the camera finishes shooting a frame. The filter wheel begins moving immediately after each exposure, while the shutter is closing. To shoot a 20x wedge: autofilt on cam 20 autofilt off Both 'autofilt on' and 'autofilt off' automatically send the filter wheel to its home position (it invokes 'home autofilt') and zeroes the channel's counter. This behavior can be disabled with the -nohome option. OPERATION 'autofilt on' will do the following: > Executes 'home autofilt' (unless -nohome is specified) to home the wheel to a position that has NO FILTER. > Zeroes the filter wheel channel's counter > Like fades/dissolves, commands that involve exposing the camera (CAM, REP, etc) will first expose the filter in the gate BEFORE advancing the filter wheel. The filter will NOT move during SEEK(OPCS) or GO(OPCS). SETUP NOTES It is assumed the filter wheel speeds have been configured to move to the next filter position quickly enough so that it stops before the camera begins exposing the next frame. See FILTER(OPCSDEFS) for a full technical description. SEE ALSO FILTER(OPCSDEFS) - define channel to control a filter wheel ORIGIN Version K1.12e+ Gregory Ercolano, Venice California 04/10/98