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Northstar Explorer 657 Installation and Operation Manual8
1-3 Plug-in cards
The 657 can use two kinds of plug-in card:
1 C-MAP™ chart cards have chart details
required for navigating in a particular region.
When a chart card is plugged in, the extra
details automatically appear on the 657 chart
window.
The 657 can use NT, NT+ and NT-MAX
cards. NT-MAX cards have much more chart
information than earlier cards, including
photos of points of interest.
2 C-MAP™ user cards are used to store
navigation data. Each user card expands
the 657 memory and allows the data to be
transferred to another 657 easily.
(see section 14).
Note: The older 5 volt user cards are not
supported.
1-2 Cleaning and maintenance
The 657 screen is covered by a proprietary
anti-reflection coating. To avoid damage, clean
the screen only with a damp cloth and mild
detergent when dirty or covered in sea salt.
Avoid abrasive cleaners, petrol or other solvents.
If a plug-in card gets dirty or wet, clean it with a
damp cloth or mild detergent.
Cover or remove a transom-mounted transducer
when repainting the hull. If painting over a
through hull transducer with antifouling paint,
use only one coat of paint. Remove the previous
coat of antifouling paint by sanding it lightly.
To optimize performance, avoid walking on
or jamming cables and connectors. Keep the
transducer free of weed, paint and debris. Do not
use a high pressure water blast on a speed sensor
paddlewheel as it may damage the bearings.
Push the dust cover over the display when the
657 is turned off.
The Northstar 657 is a compact, rugged, highly
integrated marine chartplotter and fishfinder. It is
easy to use and has an easy to read color display.
Complex functions can be performed with a few
key presses, taking the hard work out of boating.
The available functions, displays and setup
menus depend on the optional sensors and
instruments that are installed:
Sonar functions require a sonar transducer to
be installed
Fuel functions require one or more
petrol/gasoline or diesel fuel sensors to be
installed.
SmartCraft™ engine functions require a
SmartCraft™ system to be installed. For
information on using SmartCraft™, see the
SmartCraft™ Gateway Installation and
Operation Manual.
1-1 Overview
DSC/Buddy track functions require a
Northstar DSC VHF radio with Buddy track
support to be installed.
The 657 can send data to other instruments,
such as an autopilot, and receive data from
other instruments.
AIS functions require an optional AIS receiver
to be installed.
For information on installing options, see section
18-2.
This manual describes how to install and operate
the 657. Special terms are explained in Appendix
C. For maximum benefit, please read this manual
carefully before installing and using the unit. For
more information on this instrument and other
Northstar products, go to our website,
www.northstarnav.com.