Furuno GP-3500F - Manual (Page 26)

1. BASIC OPERATION
1-16
17. Enter start date and time with the numeric keys, in 24-hour notation and then
press the [ENTER] knob.
18. Press the [MENU] key several times to close the menu.
Note: To terminate the simulation mode, select "2. LIVE" at step 5.
Echo sounder
1. Press the [MENU] key to display the main menu.
2. Press the [0] key to show the SYSTEM SETUP menu.
3. Press the [7] key to display the SIMULATION MODE menu.
4. Rotate the [ENTER] knob to choose ECHO SOUNDER.
5. Press the [1] key to choose "1. SIM."
6. Press the [MENU] key several times to close the menu.
Note: To terminate the simulation mode, select "2. LIVE" at step 5.