How do I save a preset in a USM-810?
This can only be done online. The preset is saved in the unit, it is not saved as part of the dataframe. If you want to save 32 presets to files, you would need 32 files. Configure the unit to meet your needs, select the Preset tab, press the store button, within 5 seconds press the button for the preset you want to define, and give the preset a text description.