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B – Load setting and config display
The upper button allows you to load the setting (fuel, o2 consumption, engine power, etc. Etc.) made with the external Dg4config.exe program. Settings are saved in the scenario so when you load a scenario the DGIV will not have loaded the last settings set in dg4config.exe but those saved in scenario. The bottom plate allows you to control which settings are in use for this DGIV. Default settings for almost all scenarios included in package set a DGIV ready for earth & moon operation, 15 day reserve, and enough fuel to reach the moon. It's important before any longer trip to check this plate and set a reserve suitable to your trip duration using dg4config.exe and then load those setting in your DGIV.