No part of this manual may be copied, reproduced, republished,
transmitted or distributed for any purpose, without prior written
consent of Lowrance Electronics. Any unauthorized commercial
distribution of this manual is strictly prohibited.
Lowrance Electronics may find it necessary to change or end our
policies, regulations and special offers at any time. We reserve the right
to do so without notice. All features and specifications subject to change
without notice. On the cover: LMF-400 shown.
Thank you for buying the Lowrance LMF-400! Your unit is a highquality, multi-function, digital gauge designed to work with a
LowranceNET network. This is the NMEA 2000
developed by Lowrance Electronics.
Caution:
Installing LowranceNET NMEA 2000 devices is significantly
different from installing earlier Lowrance components without
NMEA 2000 features. You should read all of the installation
instructions before proceeding.
This gauge will only work with a NMEA 2000 network. It MUST be
connected to a NMEA 2000 network or it WILL NOT function. When
properly installed, the LMF-400 will display information from a variety
of Lowrance Electronic Probe (EP) sensors connected to the network.
networking system
A NMEA 2000 network using LowranceNET components.
All Lowrance NMEA 2000 capable devices are either NMEA 2000
certified or certification is pending. See our web site,
for the latest product status information.
To get started with your Lowrance gauge, first read the installation
section. It contains instructions for installing the LMF-400.
After you've read those instructions, install the gauge and any EP
sensors you may have purchased, then read the rest of this manual.
Each sensor comes with its own installation instruction sheet, but this
manual describes how the gauge operates with each sensor, and how to
calibrate the sensors. The more you know about the gauge, the better it
will work for you.
Your package also includes another manual, part 988-0154-172, which
contains complete instructions for creating or expanding a NMEA 2000
network.
3
www.lowrance.com,
LowranceNET teams up the powerful NMEA 2000 network standard
with a fast-growing, cutting-edge family of Lowrance Electronic Probe
Sensors. At press time, the product line includes the EP-10 Fuel Flow,
EP-15 Fluid Level, EP-20 Engine interface, EP-25 Speed, EP-35 Temp
and EP-45 Water Pressure sensors.
And what's more exciting, there are others on the way! Be sure to log
onto
www.lowrance.com from time to time for the latest developments,
including updated operation manuals and instruction sheets you can
download free of charge. When you're ready to expand your network,
see the accessory ordering information on the back cover of this
manual.
NOTICE!
The storage and operation temperature range for your unit is from
-4 degrees to +167 degrees Fahrenheit (-20 degrees to +75 degrees
Celsius). Extended storage or operation in temperatures higher or
lower than specified will damage the liquid crystal display in your unit.
This type of damage is not covered by the warranty. For more
information, contact the factory's Customer Service Department; phone
numbers are inside the manual's back cover.
4
Section 2: Installation
Preparation
The design of the LMF-400 allows convenient mounting in the dash of
your boat, or it can be mounted on any flat panel at least four inches in
diameter.
To mount the LMF-400 in the dash, first make sure there is sufficient
clearance behind the panel in the desired location. Also, see that there is
adequate room to connect power and transducer cables. At least 3-1/2 inches
are needed behind the surface of the dash to clear all connectors and wiring.
Recommended Tools and supplies
Recommended tools for this job include: hole saw, drill, drill bit (for
starter hole). Required supplies for this job include: "U" bracket, lock
washers and wing nuts (included).
Mounting the Unit
Cut a 3-3/8 inch diameter mounting hole with a hole saw. A "U" bracket
is supplied to hold the sonar to the dash. Place it over the threaded
studs on the back of the unit and secure it with the lock washers and
nylon wing nuts provided with the unit.
Secure unit to the dash using "U" bracket as shown.
The bracket is designed to secure the unit to a dash with a thickness of
2 mm. If your dash is thicker than 2 mm, the "U" bracket will be too
long. Simply place washers or spacers between the unit and the bracket
until you can tighten the wing nuts and secure the unit in place. Once
the unit is in place, you need to connect it to a power supply, to the
speaker (provided) and the LowranceNET.
5
Yellow wire:
Piezo ground
Blue wire:
LMF-400
Housing
LMF-400 with power cable wiring and NMEA 2000 Cable Connection.
Piezo positive
White wire:
Dash light
positive
Black wire:
Dash light
ground
LMF-400
NMEA
2000
Network
Cable
Connecting to a NMEA 2000 Network
A network bus is an installed and operational network cable (backbone)
running the length of your boat, already connected to a power supply
and properly terminated. Such a bus provides network connection
nodes at various locations around your boat.
This is similar to the telephone wiring in a house. If you pick up a
phone in your living room, you can hear someone talking into the phone
in the bedroom.
LowranceNET Node Kit for a NMEA 2000 network. Includes a 2 foot
extension cable, T connector, 120-ohm male terminator and 120-ohm
female terminator.
6
For complete instructions on setting up a new NMEA 2000 network or
expanding an existing one, see the other document packed with your
gauge, "Setup and Installation of NMEA 2000 Networks, GeneralInformation" part number 988-0154-172. If that document is missing, it
can be downloaded free from the Lowrance web site.
Network Nodes
A network bus is built of network nodes spread along a backbone.
Network nodes are made by fitting T-shaped connectors into the
backbone (using the sockets on the sides), and attaching a display unit or
sensor at the bottom of the "T."
Using our telephone example, the T connectors are similar to telephone
jacks. The backbone is like the phone wiring running through a house.
Phones in a house must be connected to each other to communicate, and
in the same way only sensors and display units plugged into the NMEA
network can share information.
Connections found in the middle of the bus will have one or more of these
T-shaped connectors with the backbone cables plugged into both sides.
Connections at the end of a network will have the backbone plugged into
one side, and a terminator plugged into the other, as shown in the
following figure.
Cable from
sensor or
display unit
LEI or Lowrance
device needs an
open T.
T connector
Backbone cable
(to rest of bus)
NMEA 2000 network node located at the end of a NMEA 2000 bus.
Terminator at
the very end
of the bus
Adding a Network Node
You can add a node anywhere along the network backbone where a
connection already exists. This connection could be at the end of the
network (between a T connector and a terminator), between two T
connectors, between a T connector and a backbone extension cable, or
between two extension cables. Wherever you want to add the new node,
simply separate the sockets of the old connection and attach your new T
connector between them.
7
Lowrance or LEI device con-
nects to new T connector.
Existing network
node
Add a new device to a NMEA 2000 bus by attaching a T connector
between two T connectors, between a T connector and the end
terminator, or between two backbone extension cables.
Add T-shaped connector to add device
to bus.
Attach
terminator at
end of bus.
If you want to add a node at the end of the line (as shown in the previous
figure), remove the terminator from the very last connector, securely
attach the new T connector, and then attach the terminator on the new
connector. Either method will allow you to add a device.
Additional Network Information
Further instructions on creating or expanding a LowranceNET network
are illustrated in the NMEA 2000 network setup booklet, part number
988-0154-172, which came packed with this manual.
8
Section 3: Operation
The displays and settings in this digital gauge are controlled by a fivebutton keypad. The buttons are
EXIT. The MENU key calls up the basic menu, which allows you to set up
as many as 16 pages for display. The
scroll through and highlight menu items. The
referred to as the
ENTER key) allows you to scroll forward through a
series of pages and is used to select items from menus. The
used to close menus and scroll backward through a series of pages.
LMF-400 keypad.
Boat Setup
When the LMF-400 powers up for the first time, the screen will show
the
Boat Setup menu. You will not be able to proceed without
completing Boat Setup, which requires you to program into the unit the
number of engines and gas tanks on your vessel. Boat Setup will only
appear again if you reset Engine/Tank configuration, add certain EP
sensors or if configuration is lost.
To complete Boat Setup:
1. With Boat Setup highlighted, press
allowing you to choose the number of engines and fuel tanks on your
vessel. The Boat Setup menu options are: 1 Eng/1 Tank, 1 Eng/2 Tank,
2 Eng/1 Tank, 2 Eng/2 Tanks, 3 Eng/1 Tank or
2. Choose the option that applies to your vessel and press ENTER. After
setting the engine/tank configuration, you will need to enter the size of
each tank via the Set Tank Size menu. It will appear with up to three
options, depending on the number of tanks you chose during Boat
Setup. The options are: Port Tank, Stbd Tank and Cen Tank.
3. Select the tank you want to set up and press
the Setting Tank Size window. If you selected one tank during Boat
Setup, you will be taken directly to the Setting Tank Size Window.
UP, DOWN, MENU, PAGES/ENTER and
UP and DOWN keys are used to
PAGES/ENTER key (also
EXIT key is
ENTER. A menu will appear,
3 Eng/3 Tanks.
ENTER. That will launch
9
4. Use the
hold and press
UP and DOWN keys to enter how many gallons the tank will
ENTER.
Press EXIT and repeat steps 3 and 4 for each of the remaining tanks.
5. After all tanks on your vessel have been setup, press EXIT repeatedly
to be directed back to the main display.
NOTE:
If your LMF-400 was already installed on your boat you likely will
not have to complete boat setup. But, if you would like to go
through the setup, take a look at the following instructions.
1. Press
Select
MENU, scroll down to SYSTEM SETUP, then press ENTER.
ENG/TANK CFG and press ENTER|ENTER.
2. The following message will appear: Press Enter to Reset
Eng/Tank Cfg. Press
directed to the Boat
press
ENTER to access the engine/tank configuration menu.
ENTER to reset the configuration and be
Setup screen. From the Boat Setup screen,
Pages
Pages are the backbone of the LMF-400. They give you the power to
mix and match data that will be displayed on the screen. Once you have
picked pages that meet your preferences, the 400's multi-functionality
really kicks in, allowing you to customize pages with the data most
important to you. We'll take a closer look at customizing pages in
Section 5: Advanced Operation.
The LMF-400 has the capability to support up to 16 pages, which
means you can add pages you find most helpful more than once,
customizing each one differently.
Engine Trim (from left to right), Diagnostics, Fuel Manager and GPS
Module page.
Engine Trim
Monitors position of the boat’s engine in either percentages or degrees.
Diagnostics
Monitors engine performance, notifying you if a problem arises.
Fuel Manager
Fuel Manager page has three digital readouts capable of displaying:
Fuel Flow, Fuel Economy, Fuel Remaining, Fuel Range, Trip Fuel
Used, Seasonal Fuel, Paddle Wheel Speed, Pitot Speed and GPS Speed.
10
GPS Position
The GPS position page displays the boater’s position in LatitudeLongitude, using Degrees-Minutes-Seconds or Degrees-Minutes as
units of measure.
Single Analog (from left to right), Dual Analog, Quad Analog and
Single Digital page.
Single Analog
The single analog page displays an analog gauge that can show: Alt
Voltage, Battery Voltage, Engine Temp, Atmospheric Pressure,
Temperature, Fluid Level, PaddleWheel Speed, Pitot Speed, GPS Speed
and Tachometer.
Dual Analog
The Dual Analog page shows a pair of analog gauges that can display:
Alt Voltage, Battery Voltage, Engine Temperature, Atmospheric
Pressure, Temperature, Fluid Level, Paddle Wheel Speed, Pitot Speed,
GPS Speed and Tachometer.
Quad Analog
The Quad Analog page displays four analog gauges that can monitor:
Alt Voltage, Battery Voltage, Engine Temperature, Atmospheric
Pressure, Temperature, Paddle Wheel Speed, Pitot Speed, GPS Speed
and Tachometer.
Single Digital
The Single Digital page displays a digital gauge that can monitor: Alt
Voltage, Battery Voltage, Engine Temperature, Atmospheric Pressure,
Temperature, Depth, Engine Load, Total Engine Hours, Fuel Flow,
Fuel Economy, Fuel Remaining, Fuel Range, Paddle Wheel Speed, Pitot
Speed, GPS Speed and Tachometer.
11
Dual Digital (from left to right), Quad Digital, Synchronizer and Trim
Tabs page.
Dual Digital
The Dual Digital page features a pair of digital gauges which can
display: Alt Voltage, Battery Voltage, Engine Temp, Atmospheric
Pressure, Temperature, Depth, Engine Load, Total Engine Hours, Fuel
Flow, Fuel Economy, Fuel Remaining, Fuel Range, Paddle Wheel
Speed, Pitot Speed, GPS Speed and Tachometer.
Quad Digital
The Quad Digital page has four digital gauges capable of displaying:
Alt Voltage, Battery Voltage, Engine Temperature, Atmospheric
Pressure, Temperature, Depth, Engine Load, Total Engine Hours, Fuel
Flow, Fuel Economy, Fuel Remaining, Fuel Range, Paddle Wheel
Speed, Pitot Speed, GPS Speed and Tachometer.
Synchronizer
The Synchronizer page will show RPM for up to three engines, allowing
users to synchronize the engines for smoother performance.
Trim Tabs
The Trim Tab page monitors the position of the Trim Tabs using either
percentages or degrees as units of measure.
Viewing options
The pages may be viewed on the screen in one of two ways. You can
scroll through them manually by using the
ENTER and EXIT keys or set
them to scroll automatically via the Page Scrolling function. We'll
explore Page Scrolling in greater detail later in this section.
NOTE:
The
ENTER and EXIT keys work together to help you scroll through
pages on the main display. Pressing the
in one direction. Pushing the
EXIT key moves the scroll in the other
ENTER key moves the scroll
direction.
Basic Menu
Each page has its own menu. The menus vary somewhat from page to
page, but all include these basic menu categories: Page, Screen, Audio
Setup and
System Setup.
12
The pages may be displayed one at a time or in a timed scroll set at an
interval of your choosing via the page
scrolling setting.
NOTE:
The System Setup menu is the lone basic menu category that
differs slightly from page to page, depending on the page being
displayed. We'll delve into that later in this section.
Scrolling list of page options (left) with basic menu categories (right).
Adding Pages
To add a page to the display:
1. Press
four options: Add Page, Remove Page, Page Scrolling and
MENU, select PAGES and press ENTER. A menu will pop up with
Pop-Ups
Setup.
2. Select
ADD PAGE and press ENTER. Use the UP and DOWN keys to
scroll through the list.
3. You can select the page you want to display by pressing
ENTER when
the desired page is highlighted. An adding page prompt will appear
asking you to press the
ENTER key to add the page.
4. Press ENTER to add the page, which will take you back to the main
display, where the page you selected will be on the screen.
5. If you choose not to add the selected page, press
EXIT repeatedly to
return to the main display.
Removing Pages
To remove a page from the display:
1. Press
2.
ChooseREMOVE PAGE andpressENTER. You won't have a list to choose
MENU, select PAGES andpressENTER.
from, like when we added a page. You will only be able to remove the
page that was on the main display when you pressed the
MENU key.
The following prompt will appear: Press Enter to Remove current Page.
3. Press
ENTER, which will return you to the main display.
4. If you decide not to remove the selected page, press EXIT repeatedly
to return to the main display.
13
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