Using The Pwr Key; Using The Five Function Keys - NorthStar 957 Operator's Manual

Chapter 3 - Using the Controls

Using the PWR key

Using the five function keys

CHART function key
"Where am
I?"
STEER function key
"How do I get
to my
waypoint?"
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To turn the 957 on, briefly press the PWR key. The 957 emits
several short beeps as it first displays the STARTUP screen,
followed by the SELF-TEST screen. This screen displays the
results of the 957's self-tests, which are automatically run each
time you turn power on. After you clear the WARNING
MESSAGE, the 957 will display navigational data.
To turn the 957 off, press and hold the PWR key for several
seconds until the screen goes dark.
The five function keys—CHART, STEER, WAYPTS/ROUTES,
STAR, and NAV LOG—located across the lower left part of the
957, control the functions you'll use most often. You can press
any function key, at any time, on any screen, to display the
information you need.
The CHART key displays your position on the CHART screen
(shows lat/lon graphically) or on the GPS POSITION screen
(shows lat/lon numerically). Both screens also display COG
and SOG.
You can display position as any of the following:
>
as GPS/WAAS or DGPS lat/lon coordinates
>
as lat/lon from an external loran receiver (if connected)
>
as loran TDs (if you've connected a loran to the 957)
>
as Phantom Loran TDs (by converting GPS coordinates
to Loran TD's)
The STEER key shows you how to steer precisely along a
course line to a designated waypoint. Your position is shown
in relation to your course line, and numerical information is
shown to help you steer directly to your waypoint, including
cross track error, distance and bearing, estimated time to
waypoint, estimated time of arrival, COG and SOG, and speed
of advance.
957 Operator's Manual, Rev. B