Humminbird 515 - Manual (Page 30)

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Simulator
Use the Simulator to learn how to use your Fishfinder before taking your boat
on the water. The Simulator is a very powerful tool that simulates on the water
operation, providing a randomly-updated display. We recommend going
through this manual while using the Simulator, since all of the menus function
and affect the display the way they actually do when in Normal operation.
NOTE: To get the full benefit of the Simulator, it is important to select Simulator manually from
the Start-Up Options menu as opposed to letting the Fishfinder enter Simulator automatically
(as it will if a transducer is not connected and you do nothing during power up). Manually
selecting Simulator from the Start-Up Options menu allows you to pre-configure your Fishfinder
for on the water operation. Any menu changes you make will be saved for later use.
A message will appear on the display periodically to remind you that you are
using the Simulator.
Exit the Simulator by powering your Fishfinder off.
Simulator