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Dear Customer,
Thank you for choosing the MLR FX312 GPS or the MLR FX412 DGPS Navigator. We are
confident it will give you many years of excellent service and you will enjoy exploring the
numerous functions available from this state of the art GPS or DGPS.
For further information or technical help, please do not hesitate to contact your local dealer or
MLR Electronique in Vallet, who will be pleased to help you.
If you have chosen the FX312, you will be able to upgrade its accuracy by connecting it to the
MLR DF300 Differential Beacon Receiver, or by modifying it into a FX412. For more
information, contact your local dealer.
Yours sincerely,
Jean Pierre MAQUAIRE
C.E.O
FX312 & FX412 VERSION 2.0
MLR ELECTRONIQUE
1

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B - USING YOUR GPS
1-POSITION DISPLAY
Displays the current geographical position of the vessel in various coordinate formats.
2-NAVIGATION DISPLAY: SPEED AND COURSE OVER THE GROUND
Shows vessel's speed over ground and course over ground.
3-GO TO WAYPOINT DISPLAYS
Guides the user through waypoint navigation functions like activation and display modes.
4-GOTO ROUTE DISPLAY: FOLLOWING A ROUTE.
Enables following a pre-defined route by navigating through waypoints.
5-PLOTTER DISPLAY: VIEW YOUR TRACK AND CURRENT POSITION RELATIVE TO SURROUNDINGS
Provides a graphical representation of tracks, waypoints, and vessel position.
6-MAN OVER BOARD (MOB) AND MARK FUNCTIONS
Allows instant recording of position for emergencies or marking points of interest.
7-SIMULATOR FUNCTION
Enables simulation of GPS navigation functions for training or testing.
8-SATELLITES
Displays information about received satellites and their signal strengths.
9- TO USE THE FX312 OR THE FX412 IN DIFFERENTIAL MODE
Instructions for using the GPS in differential mode with DGPS receivers.
C - BEGINNERS GUIDE
1-POWER ON/OFF
Procedure for switching the GPS unit on and off, including autotest sequence.
2-SATELLITES
Viewing satellite information and signal strengths on the display.
3-CONTRAST AND BACKLIGHT ADJUSTMENT
Adjusting display contrast and backlight for optimal visibility.
4-GENERAL PROCEDURES USING THE KEYBOARD
Explains the function of various keys and basic navigation operations.
5-USE OF 'ARROWS' KEYS AND ENTER
Details on using arrow keys for cursor movement and Enter for selection.
6-ABBREVIATIONS AND SYMBOLS
Glossary of common abbreviations and symbols used on the GPS screen.
7-INITIALISATION AND CONFIGURATION OF YOUR GPS
Guide to setting up GPS parameters like system and navigation menus.
D – DESCRIPTION OF THE EQUIPMENT AND SPECIFICATIONS
1- CONTENTS OF FX312
Lists all items included in the FX312 package.
2- CONTENTS OF FX412
Lists all items included in the FX412 package.
3-COMMUN SPECIFICATIONS OF THE FX312 & FX412
Details common features and specifications for both FX312 and FX412 models.
4-PARTICULAR SPECIFICATIONS OF THE FX412
Specific technical details and features unique to the FX412 model.
E - INSTALLATION INSTRUCTIONS
1- RECEIVER CASE
Information on mounting and installing the receiver unit.
2- SITING THE ANTENNA
Guidance on optimal placement of the GPS antenna for FX312 and FX412.
3 - PROCEDURE FOR ELIMINATION OF INTERFERENCE (ONLY FOR FX412)
Steps to identify and resolve DGPS signal interference issues.

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