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O-12
Understanding the On-screen Images
As the boat moves, terrain and bottom composition variations
are displayed on-screen. Fish, bait fish and thermoclines (under-
water temperature changes) are displayed when detected.
Underwater conditions vary greatly, so some experience and
interpretation is needed to realize all the benefits of the Piranha
– use the picture below as a guide to the most common condi-
tions and practice using the Piranha over known bottom types.
Accessing Menu Features
A simple menu system accesses Piranha’s adjustable features.
To activate the menu system, press POWER-MENU and a menu
appears. Press POWER-MENU repeatedly to access other Piranha
menus one at a time. When a menu is on the display, use the
right and left arrow keys to adjust the menu. Menus automatical-
ly are removed from the screen after several seconds.
Note: Each time POWER-MENU is pressed, the backlight
momentarily illuminates for easy viewing at night. Adjust
the Light menu setting to keep the light on.
Note: If Simulator Mode is selected from the Startup Menu and
a transducer is plugged in, menu settings are saved in memory.
Menu settings are not saved from Simulator mode without a
transducer connected.
Light
(Setting Saved in Memory, Defaults to OFF)
Press POWER-MENU until the
LIGHT menu appears. Select either OFF, LOW or HIGH to activate
the backlight at the desired level.
Note: Continuous backlight operation significantly
decreases battery life on Piranha Portables.
Sensitivity
(Setting Saved in Memory, Defaults to OFF)
Press POWER-MENU until the
SENSITIVITY menu appears. Select a higher number to show
smaller sonar returns on-screen, or a lower number to remove
clutter from the screen. Adjusting Sensitivity also affects how
sonar returns are identified as Fish ID Symbols - more fish will
be detected at a higher setting, fewer at a lower setting. 5 is the
Factory Setting.
Depth Range Menu
(Setting Saved in Memory, Defaults to OFF)
Press POWER-MENU until the
Depth Range menu appears. Select AUTO to have the Piranha
automatically select the Depth Range or manually select 15,
30, 60, 120, 180, or 240 ft. for Piranha 1 and, in addition 360,
480 or 600 ft. for Piranha 2. This locks the depth range to a
specific setting.
Note: In manual operation, if the depth is greater than the
depth range setting, the bottom will not be visible on-
screen. Select AUTO to return to automatic operation.
Water Surface Line
Depth – Measured at the Transducer
Rocky Bottom Depth Contour Soft Bottom Hard Bottom
Menu Title
Setting
Button Changes
A button has no function when
the menu arrow is not displayed.
Thermocline
Bait fish
Fish ID
Structure
Low Sensitivity
Normal Sensitivity
High Sensitivity