User manual COBRA MF 2500

[. . . ] 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 CorporationTM 6500 West Cortland Street, Chicago Illinois 60707 USA ©2006 Cobra® Electronics Europe Limited Dungar House, Northumberland Avenue, Dun Laoghaire 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. (a051205) Our Thanks to You and Customer Assistance Thank you for purchasing a CobraMarineTM MF 2500 Fish Finder. [. . . ] In Standalone DST mode, the NMEA 0183 output produces standard NMEA Depth, Speed, and Temperature sentences. NORMAL FISH FINDER MODE LED Behavior: 1 short flash every 2 seconds The MF 2500 Fish Finder and the transducer are operating properly. This is the normal behavior when everything is working. WAITING FOR COMMAND LED Behavior: 2 short flashes every 2 seconds The MF 2500 Fish Finder is not pinging because it is waiting for a command from the chart plotter. LOW POWER MODE LED Behaviour: 3 short flashes every 2 seconds The MF 2500 Fish Finder has detected a transducer without trasducer ID, but the "ignore" command has been selected on the chart plotter so the unit is pinging at low power. NO TRANSDUCER MODE LED Behavior: 4 short flashes every 2 seconds: The MF 2500 Fish Finder is not pinging because transducer ID has not been detected a transducer and the "ignore" command has not been selected on the chart plotter. 10 Owner's Manual External Connections 2. 5 EXTERNAL CONNECTIONS Nothing Comes Close to a Cobra® 11 Power Supply Wiring Diagram 2. 6 POWER SUPPLY WIRING DIAGRAM We recommended the installation of a switch and a (5A) fuse in the positive DC supply to the MF 2500 Fish Finder. The MF 2500 Fish Finder is active sending the digital depth through the NMEA interface even when the power (chartplotter) is turned off, thus the need for a switch. In the example below you will notice the positive DC power connection is run through a switch and a fuse before connecting it to the MF 2500 Fish Finder and the chartplotter. 12 Owner's Manual Chartplotter Connection Diagram 2. 7 CHARTPLOTTER CONNECTION DIAGRAM See the following picture to make the connection to the chartplotter: Nothing Comes Close to a Cobra® 13 Transducers 3. TRANSDUCERS The transducer is a device that transmits and receives sound waves into the water. The active component inside the transducer is commonly referred to as an element but actually is a piezoelectric ceramic material. CobraMarineTM sells 4 transducers for various applications. Simply select the CRUISE or the FISH preset. This will restore optimal operating parameters for either cruising or fishing. 4. 5 I'm using the Fish Finder in manual mode, how can I set the parameters for optimal operation. Setting operating parameters for optimal operation depends upon environment conditions, user preference and intended usage of the Fish Finder (e. g. A good starting point is to select a full auto preset such as CRUISE or FISH and then, after waiting a while to allow the echogram displayed to stabilize around the auto calculated parameters, switch to the MANUAL preset mode. At this point it will be possible to fine tune the operating parameters by slightly changing the auto calculated parameters. Can I always leave the Fish Finder in Full Auto/(auto gain and auto range) mode?Yes, but note that the full auto mode suits the 90% of the cases, however in extreme situations the auto modes may fail and thus it is necessary to switch to the Manual mode. 4. 7 What are extreme situations in which auto modes may fail?When the bottom is very deep, at high boat speed, when the bottom is very shallow (< 5 feets), when the water is full of materials in suspension, or bad sea conditions. 4. 8 What should I do if the auto modes fail?Failure of auto modes can happen for various reasons. [. . . ] 9 L LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 N NMEA Output sentences . . . . . . . . . . . . . . . . . . . 7 O Operating Frequency . . . . . . . . . . . . . . . . . . . . . . . . 7 Operating temperature range . . . . . . . . . . . . [. . . ]