Light (Setting Not Saved In Memory); Sensitivity (Setting Saved In Memory); Depth Range (Setting Not Saved In Memory) - Humminbird PiranhaMAX 155 Installation And Operation Manual

Press the POWER-MENU key until LIGHT appears. Use the backlight for night
fishing. Select either 0 (Off), or 1 through 5 to activate the backlight at the
desired level. (0 to 5, Default = 0)
NOTE: Continuous backlight operation will significantly decrease the battery life for
PiranhaMAX Portables.
Press the POWER-MENU key until SENSITIVITY appears. Sensitivity controls how
much detail is shown on the display. Increasing the sensitivity shows more sonar
returns from small baitfish and suspended debris in the water; however, the
display may become too cluttered.
When operating in very clear water or greater depths, increased sensitivity shows
weaker returns that may be of interest. Decreasing the sensitivity eliminates the
clutter from the display that is sometimes present in murky or muddy water. If
Sensitivity is adjusted too low, the display may not show many sonar returns that
could be fish. (0 – 10, Default = 5)
Press the POWER-MENU key until DEPTH RANGE appears. Automatic is the
default setting. When in automatic, the lower range will be adjusted by the unit
to follow the bottom. (Auto, 15 to 600 ft, Default = Auto)
NOTE: In manual operation, if the depth is greater than the depth range setting,
the bottom will not be visible on the display. Select AUTO to return to automatic
operation.
The Menu System
Light
(Setting Not Saved in Memory)
Sensitivity
(Setting Saved in Memory)
Depth Range
(Setting Not Saved in Memory)
44