Lowrance Mark series DSI User manual

Mark and Elite series DSI
Sonar Operation manual

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Introduction
1
NOTICE
This manual covers several units. Some
features and screenshots may dier from
your unit’s capabilities or from what you
see on your screen. Your unit, however,
will function in a similar manner.
Getting Started
Turn unit on/
off
Press and hold the LIGHT/
POWER key for three seconds.
Adjusting
the backlight
Press the LIGHT/POWER key,
select Brightness and press
the keypad left/right.
Muting Audio
Select Mute Audio from the
System menu and press
ENTER.
ZOOM Keys: used to zoom
in/zoom out (On GPS-
capable units, press keys
simultaneously to create
Man Overboard waypoint)
PAGES: used to
select pages
KEYPAD: controls
cursor & selects
items on menus
MENU: Opens
settings, context
and page menus
ENTER: conrms
menu selections
LIGHT/POWER: controls
backlight level and turns
unit on/off

General Operation
2
Exiting menus
Press Menu to see if the screen or menu has an
exit option). If it does (Close, Return to screen, Exit
dialog, etc), highlight the exit option and press
ENTER to exit.
If there is no exit option press the MENU key
repeatedly to close all menus.
Sonar settings
Selecting Menu items
Settings menu
Accessing Settings menu
Fishnder, GPS and combination units
Accessing Pages
Page menu
Page
Accessing page menus
Fishnder or GPS only units

General Operation
3
Standby mode
Lowers power consumption
by putting the unit into a sleep
mode. Press any key to resume
normal operation.
Restoring Defaults
Resets unit options and
settings to defaults.
Overlay Data
Allows you to display data on the screen. Overlay
data can be accessed on the Chart, Sonar and DSI
menus.
Advanced Mode
Enables advanced fea-
tures/settings. On some
units, advanced mode is
enabled by answering
Yes to the advanced user
question in the Setup Wiz-
ard. To repeat the Setup
Wizard, restore defaults.
WARNING: Leaving the unit in
Standby with the boat turned
off will drain the battery.

4
Sonar Operation
Trackback
You can review your sonar history by pressing the
keypad to the left until the screen starts to move
in reverse and the sonar history bar appears at
the bottom of the screen.
Move the sonar history bar all the way to the
right to resume normal sonar scrolling, or press
MENU and select Exit cursor mode.
Adjusting the display
Sensitivity (Traditional Sonar)
Controls the level of detail on the screen. Too
much detail will clutter the screen. Conversely,
desired echoes may not be displayed if Sensitivity
is set too low.
Sonar history bar
Colorline (Advanced mode - traditional)
Separates strong sonar echoes from weak sonar
echoes, making it easier to distinguish sh or
structure from the bottom.
On monochrome units, wide bands of gray
indicate a hard sonar return, while softer returns
are shown as dark, narrow lines.
Contrast (DSI sonar)
Adjusts the brightness ratio between light and
dark areas on the screen, making it easier to dis-
tinguish objects from the background.
DSI only

5
Sonar Operation
Color
Changes the look of the display using palettes
with varying degrees of color and brightness.
Features
Fishing Mode (Traditional)
Fishing modes are preset
packages of sonar set-
tings geared to specic
shing conditions.
Noise Rejection: counteracts sonar signal
interference by reducing onscreen clutter.
Surface Clarity: reduces clutter near the
water’s surface (Advanced mode only).
Color sonar Color DSI
Monochrome DSI
Range: selects the
section of the water
column shown on the
display
Frequency:
selects transducer
frequency
Stop sonar: pauses the sonar
screen

6
Sonar Operation
Sonar Settings
Alarms
The Shallow alarm sounds a tone when your
vessel enters water shallower than the selected
alarm threshold.
The Fish Alarm sounds a tone
when a sh symbol appears
on the display (Non-DSI).
Fishing Mode Depth Settings
General Use ≤ 1,000’ 50% Ping speed
Shallow Water ≤ 60’ 75% Ping speed
Fresh Water ≤ 400’ 50% Ping speed
Deep Water ≥ 1,000’ 50% Ping speed
Slow Trolling ≤ 400’ 50% Ping speed
Fast Trolling ≤ 400’ Lower chart speed
Clear Water ≤ 400’ 50% Ping speed
Ice Fishing ≤ 400’
Reduces
interference from
other sonar units
Sonar Options (Traditional)
Alarms menu
Depth threshold
NOTE: Press ENTER to silence alarms.

7
Settings
Units
Selects unit
of measure
Simulator
Simulates unit
activity
Language
Selects the language
used on menus and
text boxes
About
Displays
software
information
Time (GPS only)
Sets the clock, time
and date formats
Browse
Browse les on
a microSD card
(only on units
with microSD card
slot)
Tmp/Spd port
Allows you to use
the Tmp/Spd port
on the back of the
unit as an NMEA
0183 output