| Description: Source of an MDIS image, either a scene image from the CCD or one of two test patterns. |
| Namespace Id: mess | Steward: ppi | Class Name: MDIS | Type: ASCII_Integer |
| Minimum Value: -9223372036854775808 | Maximum Value: 9223372036854775807 | Minimum Characters: None | Maximum Characters: None |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: INTEGER |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | 0 | CCD |
| | 1 | Test pattern |
| | 2 | Inverted test pattern |