_Chem_shift_ref.External_ref_axis
| Description | The axis of the external chemical shift reference sample relative to the static field (Bo) of the spectrometer. |
| Details: | |
| Parent saveframe | chem_shift_reference |
| Data type | line |
| Common values | magic angle na parallel perpendicular |
| DB table | Chem_shift_ref |
| DB column | External_ref_axis |
| DB type | VARCHAR(127) |
| NULL allowed | yes |
| ADIT-NMR deposition system prompt | External reference axis |