| Description: The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure. |
| Namespace Id: pds | Steward: pds | Class Name: Units_of_Misc | Type: UTF8_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: ID | Conceptual Domain: Short_String |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | DN | DN is an abbreviation for data number, which is a unit that quantifies the uncalibrated output from an instrument. |
| | W/m**2/sr/nm/(DN/s) | W/m**2/sr/nm/(DN/s) is an abbreviation for watts per square meter per steradian per nanometer per (data number per second). |
| | electron/DN | electron/DN is an abbreviation for electrons per data number. |
| | electrons | electrons, a unit of counts accumulating in a detector. |
| | nm/mm | nm/mm is an abbreviation for nanometer per millimeter. |
| | pixel | pixel, the smallest addressable unit in an array. |