Lower Range - Humminbird 688ci HD DI Operation Manual

The available Upper Range settings are determined by your Humminbird® model
as follows:
• 688ci HD: 0 to 1490 ft, 0 to 454 m (International Models only);
Default = 0
• 688ci HD DI: 0 to 590 ft, 0 to 180 m (International Models only);
Default = 0
• 688ci HD XD: 0 to 2490 ft, 0 to 759 m (International Models only);
Default = 0
Lower Range sets the deepest depth range that will be displayed by the unit.
Auto: The Lower Range will be adjusted by the unit to follow the bottom
automatically. Auto is the default setting.
Manual: You can adjust the Lower Range to lock the unit on a particular depth.
Adjust the Upper and Lower Range together to view a specific depth range,
especially when looking for fish or bottom structure.
NOTE: A minimum distance of 10 feet will be maintained between the Upper and
Lower Range regardless of the manual settings entered.
The available Lower Range settings are determined by your Humminbird® model
as follows:
• 688ci HD: Auto to 1500 ft, Auto to 457 m (International Models only);
Default = Auto
• 688ci HD DI: Auto to 600 ft, Auto to 183 m (International Models only);
Default = Auto
• 688ci HD XD: Auto to 2500 ft, Auto to 762 m (International Models
only); Default = Auto

Lower Range

Settings: Various, see below.
95 Flasher X-Press™ Menu