Data Item _sas_beam.chopper_frequency
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General 
- Item name
- _sas_beam.chopper_frequency
- Category name
- sas_beam
- Attribute name
- chopper_frequency
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
Frequency of the choppers in Hz
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
- Units
- reciprocal_seconds