Humminbird 688ci HD DI Operation Manual page 54

To activate the Depth Cursor:
Use the Depth Cursor to identify depth on the flasher display.
1. Set up: Press the VIEW key repeatedly until the Circular Flasher View
is displayed on the screen. Turn on the Ice Fishing Mode (see Sonar
Menu Tab).
2. Activate: Press the DOWN Cursor key, and the purple cursor line will
appear on the display.
3. Adjust the Cursor: Press the UP or DOWN Cursor keys repeatedly until
you reach the chosen depth reading. The depth reading of the cursor is
displayed in the top, right corner of the view.
4. Close the Cursor: Press the EXIT key.
NOTE: See Set the Digital Depth Source for more information.
Views
Circular Flasher View
with the Depth Cursor
42
Depth Cursor
Reading
Depth Cursor