Humminbird Piranha 4 - Manual (Page 3)

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Depth Alarm
(Setting Saved in Memory, Defaults
to Off)
Press POWER-MENU until the DEPTH ALARM menu appears.
Select OFF for no Depth Alarm; select a number from 1-30m to
set the alarm depth point and turn it on. An audible alarm
sounds when the depth is equal to or less than the setting.
Note: Depth can be set in tenths of a metre from 1 to 9.9m
and in full metres from 10m to 30m.
Fish Alarm
(Setting Saved in Memory)
Press POWER-MENU until the
FISH ALARM menu appears. Select OFF for no fish alarm, or one
of the following symbols to set the alarm point and turn it on.
• Alarms on big fish only.
• Alarms on big and medium fish only.
• Alarms on all fish.
Fish ID
(Setting Saved in Memory, )
Press POWER-MENU until the FISH ID menu appears. Select
either OFF to view “raw” sonar returns, or ON to take advantage
of Piranha’s ability to identify sonar returns that are determined
to be a fish. A select number of possible fish returns will be dis-
played with depth.
Note: Piranha 5’s dual beam feature indicates the depth of
the return and the beam that the return comes from.
Returns from the narrow beam are shown with solid fish
icons while the wide beam returns are displayed with
hollow fish icons.
Bottom View Menu
(Setting Saved in Memory)
Press POWER-MENU until the
Bottom View menu appears. Select Structure ID to gain bottom
hardness and enhanced structure definition; Select Bottom
Black for a high contrast, easy to view from a distance, bottom
picture. Select Whiteline
® for automatic analyzation of bottom
return, showing more structure detail. The strongest returns will
be displayed with a gray checkerboard pattern, bounded by
black borders defining shapes. Use this feature for easy and
quick views of the details you need to see.
Chart Speed
(Setting Saved in Memory)
Press POWER-MENU until the Chart
menu appears. Select a setting from 1-5 to match your display to
both boat speed and present depth. Faster speeds in shallow
water should be matched with a higher chart speed setting while
slower speeds and deeper waters will best be viewed at a slower
setting. Become familiar with this feature by traveling the same
course over known bottom detail at various speeds and settings.
Maintenance
Your Piranha is designed to provide years of trouble-free operation with vir-
tually no maintenance. Follow these simple procedures to ensure your
Piranha continues to deliver top performance.
If the unit comes into contact with salt spray, wipe the
affected surfaces with a cloth dampened in fresh water.
Do not use a chemical glass cleaner on the lens - this may
cause cracking in the lens.
When cleaning the LCD protective lens, use a chamois and non-abrasive,
mild cleaner. Do not wipe while dirt or grease is on the lens. Be careful to
avoid scratching the lens.
If your boat remains in the water for long periods of time, marine growth
can reduce the effectiveness of the transducer. Periodically clean the face of
the transducer with liquid detergent.
Fish ID
Raw Sonar
Bottom Black Mode
Upper Zoom Range
Structure
Lower Zoom Range
Magnified Bottom
with More Detail