Olympus 45MG User Manual page 195

To quickly recall one of the four first custom setups
 While in the measurement screen, with the quick setup recall function activated,
press [2nd F], [] to recall the first custom single element transducer setup.
OR
Press [2nd F], [] to recall the second custom single element transducer setup.
OR
Press [2nd F], [] to recall the third custom single element transducer setup.
OR
Press [2nd F], [] to recall the fourth custom single element transducer setup.
NOTE
This feature only works when a single element transducer is plugged into the 45MG,
and the single element transducer option has also been purchased.
Custom Setups for Single Element Transducers
DMTA-10022-01EN, Rev. C, January 2015
185