www.cobra.com
MF 2500 FISH FINDER
Owner’s Manual
All rights reserved. No part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval
system, without prior written permission of the publisher.
©2006 Cobra Electronics Corporation
6500 West Cortland Street, Chicago Dungar House, Northumberland A venue, Dun Laoghaire
Illinois 60707 USA County Dublin, Ireland
Cobra®, NightWatch®, Nothing Comes Close to a Cobra® and the snake design are registered trademarks of Cobra Electronics Corporation, USA.
Cobra Electronics CorporationTM, CobraMarineTM and iASAPTM are trademarks of Cobra Electronics Corporation, USA.
TM
©2006 Cobra® Electronics Europe Limited
(a051205)
Our Thanks to You and
Customer Assistance
Thank you for purchasing a CobraMarine
TM
MF 2500 Fish Finder.
Properly used, this product will give you many years of reliable
service.
How Your CobraMarine
The
CobraMarineTM chartplotter combined with the sonar performance of the
TM
MF 2500 Fish Finder Works
CobraMarineTM MF 2500 Fish Finder is one of the most advanced marine
navigation system available. Please read this Owner’s Manual carefully to
learn the operation and installation features for your unit. Refer to your
chartplotter Owner’s Manual for all other software operating instructions.
CUSTOMER ASSISTANCE INFORMATION
Should you encounter any problems with this product, or not understand its
many features, please refer to this Owner’s Manual. If you require further
assistance after reading this Owner’s Manual, Cobra Electronics
Corporation
TM
offers the following customer assistance services:
For Assistance in the U.S.A
Automated Help Desk English only.
24 hours a day, 7 days a week 773-889-3087 (phone).
Customer Assistance Operators English and Spanish.
8:00 a.m. to 6:00 p.m. through Fri. (excepth holidays) 773-889-3087 (phone).
Questions English and Spanish.
Faxes can be received at 773-622-2269 (fax).
Technical Assistance
English only: www.cobra.com (on-line: Frequently Asked Questions).
English and Spanish: productinfo@cobra.com (e-mail).
For Assistance Outside the U.S.A
Contact Your Local Dealer or Distributor. Please see www.cobra.com
for contact information.
2
Owner's Manual
Warnings and Cautions
WARNINGS AND CAUTIONS
Before using your
CobraMarineTM MF 2500 Fish Finder please read these
general precautions and warnings.
Please read through this manual before the first operation. If you have any
questions, please contact the customer service or your local CobraMarine
or distributor.
Extensive exposure to heat may result in damage to the MF 2500 Fish Finder.
Connection to the power source with reversed polarity will damage the MF 2500
Fish Finder severely. This damage is not covered by the warranty.
The MF 2500 Fish Finder contains dangerous high voltage circuits which only
experienced technicians MUST handle.
The MF 2500 Fish Finder is not built water proof. Please make sure to avoid water
intrusion into the unit. Water damage is not covered by the warranty.
TM
dealer
Nothing Comes Close to a Cobra
®
3
Included in This Package
ABOUT THIS OWNER’S MANUAL
Any menu operations in this Owner’s Manual are related to the CobraMarine
Series of chartplotters. Connecting this product enables all of the Fish Finder
menus and screens in the CobraMarine
TM
Series chartplotter.
TM
WHAT IS IN THE BOX?
When the package containing the MF 2500 Fish Finder is first opened, please
check it for the following contents (if any parts are missing contact the dealer
the MF 2500 Fish Finder was purchased from):
CobraMarineTM MF 2500 Fish Finder (with Power Serial and optional
devices cables already connected)
Owner’s Manual
The transducer is not included with this unit and can be ordered from your
CobraMarine
TM
dealer.
4
Owner's Manual
Table of Contents
1. MANUAL ORGANIZATION
1.1. TABLE OF CONTENTS
INTRODUCTION ....................................................................................................................2
OUR THANKS TO YOU ....................................................................................................................2
CUSTOMER ASSISTANCE INFORMATION.................................................................................................. 2
WARNINGS AND CAUTIONS ....................................................................................................................3
ABOUT THIS OWNER’S MANUAL ................................................................................................................. 4
WHAT IS IN THE BOX? ....................................................................................................................4
1. MANUAL ORGANIZATION ....................................................................................................................5
1.1. TABLE OF CONTENTS ....................................................................................................................5
1.2. OVERVIEW ....................................................................................................................6
2. THE MF 2500 FISH FINDER .................................................................................................................... 7
2.1. TECHNICAL SPECIFICATIONS ...........................................................................................................7
2.2 DIMENSIONS ....................................................................................................................8
2.3 MOUNTING THE FISH FINDER............................................................................................................8
2.3.1 Installation ....................................................................................................................9
2.3.2 Installing Optional Devices ....................................................................................................... 9
2.4 STATUS LED ....................................................................................................................9
2.5 EXTERNAL CONNECTIONS .............................................................................................................. 11
2.6 POWER SUPPLY WIRING DIAGRAM................................................................................................12
2.7 CHARTPLOTTER CONNECTION DIAGRAM ..................................................................................... 13
3. TRANSDUCERS ..................................................................................................................14
4. FREQUENTLY ASKED QUESTIONS ...........................................................................................................16
Nothing Comes Close to a Cobra
®
5
Overview
1.2. OVERVIEW
The Fish Finder consists of a high power transmitter, sensitive receiver and a
transducer. The Fish Finder sends an electrical pulse to the transducer which
contains an element that converts the pulse into acoustic (sound) wave which
is sent through the water. As this wave travels from the transducer to the
bottom, it may strike fish, structures, thermoclines (temperature changes in
the water, etc.). When the wave strikes an object(s) a certain amount of the
wave is reflected back to the transducer depending on the composition and
shape of the object. When the reflected wave is returned to the transducer it is
converted into an voltage and is amplified by the receiver, processed and sent
to the display. The speed of sound in water is roughly 4800 ft./sec, so the
time lapse between the transmitted signal and the received echo can be
measured and the distance to the object determined.
6
Owner's Manual