| Description: The sampling_mode_id_ir element identifies the resolution mode of the infrared channel. |
| Namespace Id: cassini | Steward: atm | Class Name: VIMS_Specific_Attributes | Type: ASCII_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: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | HI-RES | Indicates the high resolution sampling mode was used. Reduces the angular size in the X direction to 0.25 mrad. Angular size in the Z direction remains 0.5 mrad. |
| | NORMAL | Indicates that normal IR mirror motion was used during the acquisition of background sampling data. |
| | NYQUIST | A timer is added to inhibit the X-Axis mirror step during data collection. At the end of Pixel_Sync the mirror is enabled for one-half the integration time minus the 3ms Pixel_Sync pulse width plus .5ms margin. This causes the 0.0 mrad mirror location and the 0.25 mrad mirror location to be integrated as a pixel followed by the 0.25 mirror location and the 0.50 mirror location. At the end of a row the mirror moves down a pixel. Leaving the cube dimension (in pixels) unchanged reduces the field of view to 1/2 of normal in the X direction (with 50% overlap with neighboring pixels), but normal in the Z direction. The value UNDER for this attribute has the same meaning. |
| | UNDER | Same as NYQUIST |