NorthStar 951 User manual

ADDENDUM

Northstar 951/952 GPS Chart Navigator

Operator’s Manual

(P/N GM1500C, Revision B)

This addendum applies to 952 software version 4.02 and later

Northstar Technologies, Inc.

30 Sudbury Road

Acton, Massachusetts 01720

(978) 897-6600

P/N GM1511 Rev. A 10/15/01

TABLE OF CONTENTS

ABOUT THIS ADDENDUM - - - - - - - - - - - - - 1

CONTACTING NORTHSTAR - - - - - - - - - - - - 1

ROTATING CHARTS ON THE CHART SCREEN - - - 2

CHANGING THE ROTATION SETTING - - - - - - - 2

UNDERSTANDING THE ROTATED SCREENS - - - - 3

USING CHART ROTATION WHILE BROWSING - - - 5

OTHER NOTES - - - - - - - - - - - - - - - - - - 6

– 1 –

10/15/01 Addendum P/N GM1511

ABOUT THIS ADDENDUM

This addendum contains information that adds to the Northstar

951/952 Operator’s Manual (GM1500C, Rev. B). This addendum

describes the new chart-rotation feature, which applies only to

the 952, not the 951.

CONTACTING NORTHSTAR

For service or sales information on this product, contact

Northstar by email, fax, phone, or U.S. mail as follows:

Table 1: Contacting Northstar

Email:

Service: service@northstarcmc.com

Sales: sales@northstarcmc.com

Fax:

Service: 978/897-1595

Sales: 978/897-7241

Telephone:

Main number: 978/897-6600 or 800/628-4487

U.S. mail:

30 Sudbury Road

Acton, MA 01720

Website:

www.northstarcmc.com (you can send email to

Northstar directly from this site)

– 2 –

Addendum P/N GM1511 10/15/01

ROTATING CHARTS ON THE CHART SCREEN

The 952’s chart-rotation feature lets you change the angle of

charts that are displayed on the CHART screen. You can turn

charts to any one of the following angles:

☛North up -You’ll see north pointing straight upwards (the

chart isn’t turned).

☛Course-up -You’ll see your vessel’s current direction of

travel—whatever that direction is—pointing straight upwards.

Course-up represents your true course over the last few

seconds as determined by the GPS receiver. The 952 ignores

any course changes if your speed is under half a knot. The

chart will rotate sooner for large turns than for small ones.

☛Leg-up -You’ll see your vessel’s current leg to a waypoint—

whatever direction that is—pointing straight upwards. The

952 will adjust the chart on a leg-by-leg basis, so the chart

turns accordingly whenever you start navigating on a new

leg, even if you haven’t turned the vessel yet. Exception: If

you select leg-up when you aren’t currently navigating, the

952 automatically uses course-up—until you start navigating

along another leg.

If you’re viewing course-up or leg-up, the text from the

Navionics cartridge is tilted to match the rotation angle in order

to avoid text overlap.

CHANGING THE ROTATION SETTING

To change the chart rotation setting:

❶ Press the key to display the CHART screen.

❷ Press the CHART SETUP key to display the CHART SETUP/

STATUS screen.

❸ Press the ROTATION IS key to select among the three

choices:

• rotation is north up

• rotation is course up

– 3 –

10/15/01 Addendum P/N GM1511

• rotation is leg up

❹ When you see the desired choice, press the RETURN key to

display your choice on the CHART screen.

UNDERSTANDING THE ROTATED SCREENS

The following three screens show how the chart looks if you’re

travelling along a sample route that has four waypoints, and you

rotate the chart from north-up to course-up and then to leg-up.

Figure 1: North-up chart angle (first leg going northwest)

Figure 1 shows the vessel heading northwest on the first leg from

the first waypoint to the second one. The chart’s viewing angle is

set to north-up. Notice the direction of the north-pointing arrow

in the upper right corner.

– 4 –

Addendum P/N GM1511 10/15/01

Figure 2: Course-up chart angle (second leg going east)

Figure 2 shows the same chart, but with the chart’s viewing

angle now set to course-up and the vessel on a slightly different

course than the second route leg. Notice the new direction of the

north-pointing arrow.

– 5 –

10/15/01 Addendum P/N GM1511

Figure 3: Leg-up chart angle (third leg going south)

Figure 3 shows the same chart, but with the chart’s viewing

angle now set to leg-up and the vessel on a different course than

the third leg. Notice the new direction of the north-pointing

arrow.

USING CHART ROTATION WHILE BROWSING

• Course-up - If you’re displaying the charts as course-up and

you go into browse mode (by pressing the CURSOR PAD), if

your vessel changes course, you won’t see the chart turn to

the new direction until you fully return to vessel mode (by

pressing the VESSEL key). You must be in vessel mode to

see any changed course angle. This feature lets you keep a

steady viewing angle if you’re browsing around on the chart.

•Leg-up - If you’re displaying charts as leg-up and the 952

switches to a new leg, you’ll see the chart rotate to the

direction of that new leg even in browse mode—unless

you’re actively pressing the CURSOR PAD.

– 6 –

Addendum P/N GM1511 10/15/01

OTHER NOTES

• If you’re displaying the charts as either leg-up or course-up,

you may see a black line with white space on the other side.

This line represents the edge of the chart, which is visible

since the chart has been rotated. When the vessel or cursor

crosses the line, the display will switch to a new chart.

• In software version 4.02 and later, the edges of other charts

in the 952’s built-in world atlas are shown, in addition to

those in your local cartridge. These edges are shown as

black or red dashed lines.

• The lat/lon grid will be labelled only when the chart is

north-up.

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