Furuno CI-80 - Manual (Page 20)

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MAIN MENU DESCRIPTION
Most major functions of the CI-80 are carried out through an
easy-to-follow menu system. The menu system consists of two
main groups of menus: main (operation) and system (testing,
calibration). This chapter covers the main menu. For complete
menu tree, see page 36.
Basic Menu Operation
Most major functions of the CI-80 are carried out through an easy-to-follow menu system.
Two general types of menus are used: main (operation) and system (testing).
Opening/closing the menu: Press the MENU key.
Selecting menus: Press ◄ / ►
.
Selecting menu items: Press / .
Selecting menu options, changing settings: Press / .
DEP Menu
This menu sets both the measuring depths for three layers and
the reference layer for tide differential calculation.
LAYER 1, LAYER 2, LAYER 3: Depth for measuring layers 1, 2
and 3 can be set between 2 and 250 meters, in resolution of
one meter.
REF TIDE DIFFERENCE: Selects tide layer to be used
reference layer in tide differential calculation.
NOTE: The depth of each layer may be set as you like; layer
number does not necessarily correspond to depth in
ascending order.
Figure 15 DEP menu