Also see spiral flow . Ramp-down is included only in scheduled and unscheduled downtime. It includes pumpdown, warm-up, stabilization periods, initialization routines, etc. It does not include equipment or process test time. Ramp-up is included only in scheduled and unscheduled downtime.
Examples are the microcomputer and the microprocessor.
The R-bit is set to 0 for messages to the equipment and to 1 for messages to the host. The purity of a reagent solution is higher than the purity of a standard solution. Examples are the setup recipe and the process recipe. The first medium is usually a vacuum. The registration pins fit into the registration holes in the bottom of the box door.