Click on the image for a postscript file.....
This is a fairly simple object. An event is added to the object at the collision time + 220 ns (cable delay). The event WAITS in the que for 5 crossings or 550 ns, sets the Level 0 Word based on event information and is forwarded to the tcu . Currently the L0 word is very simple but will become more complex as different event mixtures are included in the L0 trigger (see Future Additions).
Back to the Object Model . J.P. Whitfield, Carnegie Mellon 4/20/95