Complete sequences

The base class every shipped complete sequence is written against. The sequences themselves are listed in Sequence catalogue; the structure of an application, its scan loop and its prescan chain are described in Sequence applications.

Base class

Every concrete subclass sets MAX_GRAD (mT/m) and MAX_SLEW (T/m/s); init_sequence’s signature and Parameters section are the prescription. parameters() returns that prescription one parameter at a time, and a constructed application reports its resolved prescription, resolved, and its scan time, scan_time(), without playing the loop.

Object	Input	Returns	Purpose
SequenceApp	System limits, prescription keywords for init_sequence	Application; design() returns the Sequence	Base class of complete sequence implementations.
ProtocolParameter	Returned by SequenceApp.parameters()	Frozen record	One prescribed parameter: its type, default, unit, choices and description.