Humminbird 987C SI COMBO User Manual
TEMPERATURE GRAPH
(Sonar View only, with Temperature input)
Temperature Graph allows you to display or suppress a water temperature graph over
the main Sonar View to show temperature changes correlated to recent sonar history.
the main Sonar View to show temperature changes correlated to recent sonar history.
To change the display of the Temperature Graph:
1. In the Sonar View, highlight Temperature Graph on the Sonar main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the display of the
water temperature graph. (Off, On, Default = Off)
NAVIGATION MENU TAB
(987c SI Combo Models only)
Press the MENU key twice to access the Main
Menu System, then press the RIGHT cursor key to
select the Navigation tab.
Menu System, then press the RIGHT cursor key to
select the Navigation tab.
NOTE: Menu choices will vary depending on system
settings.
settings.
Navigation Menu
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