| Description: The gain_mode_id element identifies the gain state of an instrument. Gain is a constant value which is multiplied with an instrument's output signal to increase or decrease the level of that output. For ISS the value is the approximate gain setting for the image, given in units of electrons per DN. The use of an approximate value allows the both cameras to use the same set of values. The enumerated values given here are for Cassini ISS. For VIMS, this PDS3 keyword was multi-valued, with the specific meaning of each value based on the order of the given values. For VIMS in PDS4, this keyword has been replaced by multiple specific attributes. Following is a list of PDS3 keyword position indicies and the corresponding PDS4 attribute. PDS3 PDS4 [1] gain_mode_id_ir [2] gain_mode_id_vis |
| Namespace Id: cassini | Steward: atm | Class Name: ISS_Specific_Attributes | Type: ASCII_Integer |
| Minimum Value: -9223372036854775808 | Maximum Value: 9223372036854775807 | Minimum Characters: None | Maximum Characters: None |
| Unit of Measure Type: Units_of_Misc | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: INTEGER |
| Status: Active | Nillable: true | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | 12 | The gain setting was approximately 12 electrons per DN. |
| | 215 | The gain setting was approximately 215 electrons per DN. |
| | 29 | The gain setting was approximately 29 electrons per DN. |
| | 95 | The gain setting was approximately 95 electrons per DN. |