.. py:class:: RefocusedEcho2DSequence(*, B, LO, reptime, averages, shots, tau, dim=100, **kwargs) Bases: :py:obj:`Sequence` Represents a 2D Refocused-echo Sequence. Build a 2D Refocused-echo sequence using either rectangular pulses or specified pulses. :Parameters: **B** : int or float The B0 field, in Guass **LO** : int or float The LO frequency in GHz **reptime** : _type_ The shot repetition time in us **averages** : int The number of scans. **shots** : int The number of shots per point **tau** : int The maximum total sequence length in us **dim: int** The number of points in both the X and Y axis .. !! processed by numpydoc !! .. py:attribute:: name :value: "'RefocusedEcho2D'" .. py:attribute:: tau_init :value: '400' .. py:attribute:: dt .. py:attribute:: tau1 .. py:attribute:: tau2 .. py:method:: _build_sequence()