Cobra Marine Marine MF2500, Owner'S Manual

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Page 2: ...nTM 2006 Cobra Electronics Europe Limited 6500 West Cortland Street Chicago Dungar House NorthumberlandAvenue Dun Laoghaire Illinois 60707 USA County Dublin Ireland Cobra NightWatch Nothing Comes Clos...

Page 3: ...ION 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 Cobr...

Page 4: ...CobraMarineTM dealer 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 Finde...

Page 5: ...arineTM Series chartplotter 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 deale...

Page 6: ...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 Ins...

Page 7: ...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...

Page 8: ...4000 or 8000Wpp Depth Range 1KW 200kHz 2 5 Ft 0 8m to 1200Ft 365m 1KW 50kHz 5 Ft 1 6m to 4000Ft 1219m 500W 200kHz 2 5 Ft 0 8m to 700Ft 213m 500W 50kHz 5 Ft 1 6m to 1500Ft 457m Status LED External Buz...

Page 9: ...ons 2 2 DIMENSIONS 2 3 MOUNTING THE FISH FINDER The MF 2500 Fish Finder should be preferabily mounted in a dry and well ventilated location Do not mount it where it will be submerged in liquids or exp...

Page 10: ...g to the instructions provided with it Connect the POWER cable to the battery Please be advised that the MF 2500 Fish Finder when not operating will remain in Stand By mode 2 3 2 Installing Optional D...

Page 11: ...e sentences 4 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 workin...

Page 12: ...Nothing Comes Close to a Cobra 11 External Connections 2 5 EXTERNAL CONNECTIONS...

Page 13: ...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 examp...

Page 14: ...Nothing Comes Close to a Cobra 13 Chartplotter Connection Diagram 2 7 CHARTPLOTTER CONNECTION DIAGRAM See the following picture to make the connection to the chartplotter...

Page 15: ...ice 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 CobraMarine...

Page 16: ...transducer configurations There are many unique options available for your installation Only some transducer models are suitable for 1000 Watt operation Airmar has several suitable models The MF 2500...

Page 17: ...ables from the MF 2500 Fish Finder in case I need to do so for the installation Open the MF 2500 Fish Finder box unscrewing the four screws see the following figure Once the screws are removed pull ou...

Page 18: ...cruising it is possible to select the CRUISE preset 4 3 What are preset modes Preset modes are pre defined settings of the Fish Finder operating parameters There are five preset You can use them to qu...

Page 19: ...4 6 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 a...

Page 20: ...orithm that calculates the digital depth readout searches for the bottom within the range manually selected by the user At this point it is necessary to increase manually the range until the bottom be...

Page 21: ...mall targets what shall I do to reduce the screen clutter Try increasing the NOISE LEVEL or decreasing the GAIN OFFSET 4 13 In very shallow waters when the AUTO GAIN mode is selected there are fluctua...

Page 22: ...tallation 9 L LED 9 N NMEA Output sentences 7 O Operating Frequency 7 Operating temperature range 7 Output Power 7 Over Voltage protection 7 OVERVIEW 6 P package 4 Power Consumption 7 Power Requiremen...

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