8120
Installation and Operation Manual
4
Appendix A - Specifications .........................................................................................................................................................81
Appendix B - Troubleshooting .....................................................................................................................................................83
B-1 General problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
B-2 GPS navigation problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
B-3 Fuel consumption problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
B-4 Sonar fishfinding problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Appendix C Glossary and navigation data ...................................................................................................................................87
Appendix D Compliance statements ............................................................................................................................................89
Warning
It is your sole responsibility to install and use the instrument and transducer(s) in a manner
that will not cause accidents, personal injury or property damage. Always observe safe
boating practices.
The choice, location, and installation of transducers and other components of the system
are critical to the performance of the system as intended. If in doubt, consult your Navman
dealer.
To reduce the risk of misusing or misinterpreting this instrument, you must read and
understand all aspects of this Installation and Operation Manual. We also recommend that
you practice all operations using the built-in simulator before using this instrument at sea.
Global Positioning System
: The Global Positioning System (GPS) is operated by the US
Government which is solely responsible for its operation, accuracy and maintenance. The
GPS is subject to changes which could affect the accuracy and performance of all GPS
equipment anywhere in the world, including this instrument.
Electronic Chart
: The electronic chart used by this instrument is an aid to navigation
designed to supplement, not replace, official government charts. Only official government
charts supplemented by notices to mariners contain the information required for safe
and prudent navigation. Always supplement the electronic information provided by this
instrument with other plotting sources such as observations, depth soundings, radar and
hand compass bearings. Should the information not agree, the discrepancy must be resolved
before proceeding any further.
Sonar performance
: The accuracy of the sonar depth display can be affected by many
factors, including the type and location of the transducer and water conditions. Never use
this instrument to gauge depth or other conditions for swimming or diving.
Fuel data
: Do not rely on this instrument as the sole source of information about fuel
available onboard. You must supplement this instrument’s fuel data with visual or other
checks of the fuel available. This is necessary because possible operator errors, such as
forgetting to reset the fuel used when filling the tank or running the engine with this
instrument not switched on, can render this instrument inaccurate. Fuel economy can
change drastically depending on boat loading and sea conditions. Always carry adequate
fuel onboard for the intended trip, plus a reserve to allow for unforeseen circumstances.
Simulate mode
: Never have simulate mode on when you are navigating on the water.
Failure to adhere to these warnings may lead to death, serious injury or property
damage. Navman disclaims all liability for installation or use of this product that
causes or contributes to death, injury or property damage or that violates any law.
