What does in mean (for instance on a digital video camera) there is a choice of "microphone" and "microphone att?" Does it mean "attenuated?" In any case, what would be the difference in plugging a mike into either one of these inputs?
Att is an abbreviation for Attenuated. Attenuated means "reduced in level". Your microphone will be recorded at a reduced level when using the Attenuated input. Use the Attenuated input only if the non-attenuated input distorts when using your chosen microphone.