NorthStar Navigation 491 installation manual

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Index

overview 11

safety considerations 11 troubleshooting 21 wiring 14

transducer cautions 3, 5, 19

cavitation 5

hull thickness limits 6 noise problems 5

preferred mounting location 5 recommended incline angle 8

thru-hull installation with a fairing block 8

M

Maintenance, transducer 8

N

Northstar

feedback on manuals 25 website. See Website addresses

Northstar 491 Echo Sounder. See Echo sounder Northstar 957/958 GPS/WAAS Chart Navigator 18 Northstar 957/958/6000i GPS/WAAS Chart Navigator 1 Northstar 961/962 GPS Chart Navigator 1

P

Parts, ordering. See Technical support

S

Safety considerations

49111

transducer 3

Software upgrades, obtaining 18 Specifications 27

STAT (status) indicator light 18

T

Technical support contacting Northstar 24 ordering parts 25 repairing the 491 25 repairing the transducer 25

Transducer definition of 29

installation. See Installation, transducer maintenance. See Maintenance, transducer mounting. See Installation, transducer recommended 4

service, parts and repair 25 Troubleshooting

diagnostics screen 21 flow chart 23 installation checklist 19 installation problems 21

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491 INSTALLATION MANUAL Revision A

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Contents Echo Sounder Installation Manual Page Table of Contents Page Section ONE Introduction Welcome to the NorthstarWho should read this manual Scope of this manual Installation considerations Section TWO Installing the transducer Safety considerationsNorthstar-recommended transducers Airmar transducer elementsChoosing a mounting location Do not mount the transducerHull thickness limits Installing the transducer LWLUsing anti-fouling paint LWLCleaning a transducer DetailPage Section Three Installing Section Three Installing Installation Manual Revision a System components Echo sounder system components with the Northstar 961/962Mounting 190 dia 360 diaWiring Connecting the 491 to the 961/962Cable connection between the 961/962 Interface cable connection from 961/962 toConnecting the 491 to the 957/958 Connecting the 491 to a transducer 491-to-transducer connector pin wiringInitial checkout Turning the 491 onFor the 961/962 Installation test checklist Setting up the echo sounderTurning the 491 off For the 957/958/6000iSection Four Troubleshooting and servicing Status LED961/962 echo sounder system troubleshooting 957/958/6000i echo sounder system troubleshooting Getting technical support Contacting NorthstarOrdering replacement parts Servicing Hearing from youReturning a 491 for service Appendix a Technical speciﬁcations 491 technical speciﬁcationsON/OFF Glossary Cavitation Deadrise Echo sounder Fairing block TransducerGlossary Installation Manual Revision a Index 491 Index Index Installation Manual Revision a