Humminbird 727 Operation Manual page 7

531425-1_D - 727 Man_English.qxd
What's On the Display
The 700 Series™ Fishing System can display a variety of useful information about the area under and adjacent to your boat, including the following items:
Depth - water depth; can be set to alarm
when the water becomes too shallow.
Speed - if a Temp/Speed accessory or GPS
Receiver is attached, the 700 Series™ can
display the speed of Do Not print this page
the boat, and can
this is not a mistake, it's for the
Temperature -
printing process
Timer - elapsed
time with
Distance - distance
traveled with
Average Speed -
average speed
Bait Ball
Hard Bottom
Rocky Bottom
Second Sonar Return - when the sonar
signal bounces between the bottom and the
surface of the water and back again. Use the
appearance of the second return
to determine bottom hardness. Hard
bottoms will show a strong second return,
while soft bottoms will show a very weak
one or none at all.
NOTE: Entries in this view that list (with Temp/Speed or GPS Receiver) are available if either
only the information from the GPS receiver will be displayed on the view.
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Cursor - available in Freeze Frame and can
depth of a sonar return and bottom depth
Cursor Dialog Box - indicates cursor depth
directly below the cursor.
be positioned in the Sonar View to provide
below the cursor.
on the display and the depth of the bottom
device is connected to the 700 Series™ Fishing System. If both devices are connected, then
83 kHz, Wide Beam Hollow Fish Symbol
Structure - where fish may be hiding.
Fish - fish are displayed as arches and/or
fish icons, and the unit can be set to alarm
when a fish of a certain size is detected.
When a target is detected and Fish ID+ is on,
a Fish ID+ TM symbol with depth is displayed.
The size of the symbol shows the intensity of
the sonar return. The unit will clearly show
schools of Bait Fish as "clouds" of different
shapes and sizes, depending on the number
of fish and boat speed.
200 kHz, Narrow Beam Shaded Fish Symbol
Thermoclines - layers of water with different
temperatures that appear at different depths
and different times of the year. A thermocline
typically appears as a continuous band of
many gray levels moving across the display at
the same depth.
Soft Bottom
RTS® (Real Time Sonar) Window
Battery Voltage - the voltage of the boat's
battery; can be set to alarm if the voltage
falls below a certain point.
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