NorthStar 941X Manuel utilisateur

ADDENDUM

Northstar 941/941XD GPS Navigator

Reference Manual

(P/N GM1100, Revision D)

This addendum applies to software versions 2.07, 2.10, 3.12,

3.18, and later

Northstar Technologies, Inc.

30 Sudbury Road

Acton, Massachusetts 01720

(978) 897-6600

P/N GM210 Rev. D 03/21/01

Table of contents

About this addendum - - - - - - - - - - - - - - - 1

Contacting Northstar - - - - - - - - - - - - - - - 1

Software version 2.07 upgrades - - - - - - - - - - - 2

New NMEA output sentence - - - - - - - - - - - 2

NMEA 1-Hz output - - - - - - - - - - - - - - - 2

Uninstalled DGPS antenna - - - - - - - - - - - - 3

Updated beacon list - - - - - - - - - - - - - - - 3

Radio frequency interference (RFI) - - - - - - - - - 4

Software version 2.10 upgrades - - - - - - - - - - - 4

Anchor-watch alarm honk - - - - - - - - - - - - 4

Honking for all alarms - - - - - - - - - - - - - - 5

Selecting an independent NMEA output-port datum - 7

Canadian tide stations - - - - - - - - - - - - - - 7

Changes to DGPS stations - - - - - - - - - - - - 7

New DGPS stations - - - - - - - - - - - - - - - 8

New DGPS status message - - - - - - - - - - - - 8

Change to RMC sentence display - - - - - - - - - 8

New TLL sentence - - - - - - - - - - - - - - - 8

Changes to GGA output sentence - - - - - - - - - 9

Software version 3.12 upgrades - - - - - - - - - - - 9

Sharing waypoints and routes - - - - - - - - - - - 9

Time display on the tide track screen - - - - - - - - - 17

Software version 3.18 upgrades - - - - - - - - - - 18

WAAS differential capability - - - - - - - - - - 18

New WAAS options - - - - - - - - - - - - - - 19

Using demo mode to simulate WAAS - - - - - - - 22

Viewing distance-to-go on the NAVLOG screen - - 22

Changes to U.S. DPGS stations - - - - - - - - - 23

New U.S. DGPS stations - - - - - - - - - - - - 23

Changes to foreign DGPS stations - - - - - - - - 24

New foreign DGPS stations - - - - - - - - - - - 24

Miscellaneous documentation updates - - - - - - 25

Using the N-S-E-W key - - - - - - - - - - - - - 25

Using the power switch - - - - - - - - - - - - 25

Adding “honk” to table - - - - - - - - - - - - 26

Using the stop key - - - - - - - - - - - - - - 26

Outputting waypoints displayed as numbers - - - 26

Recommended distances between antennas - - - - 26

Mounting a loop antenna - - - - - - - - - - - 27

Flush mounting the 941 - - - - - - - - - - - - 28

Returning a 941 for service - - - - - - - - - - - 28

– 1 –

032101 Addendum P/N GM210

About this addendum

Please read this addendum and keep it with your 941

documentation. This addendum contains all the update details

necessary to properly operate your 941.

This addendum describes several enhancements made to the

941’s software versions 2.07, 2.10, 3.12, and 3.18. Accordingly,

this addendum contains information that supersedes some parts

of the existing 941 Reference Manual (part number GM1100,

revision D). Because the current software is now version 3.18, all

of the features described in “Software version 2.07 upgrades,”

“Software version 2.10 upgrades,” and “Software version 3.12

upgrades” also apply to version 3.18.

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.northstargps.com (you can send email to

Northstar directly from this site)

– 2 –

Addendum P/N GM210 032101

Software version 2.07 upgrades

This section describes several software enhancements made in

upgrading the 941 software version 2.06 to software version 2.07.

Please note that all of version 2.07’s enhancements apply to each

later software version, including versions 2.10, 3.12, and 3.18 as

described later in this addendum.

New NMEA output sentence

Northstar has added a new sentence to its NMEA 0183 output

format. The purpose of this new NMEA sentence, “MSS” (MSK

Receiver Signal Status), is to provide status information for the

beacon receiver’s signals (the 941 sends a null sentence if the

beacon receiver isn’t installed). This status information includes

beacon bit rate, frequency, signal-to-noise (SNR) ratio, and signal

strength.

For details about turning on this sentence, see page 118 of the

941 Reference Manual. There, you’ll see a sample screen that

displays the NMEA 0183 sentences; however, version 2.07 will

display the additional MSS sentence in your unit’s actual list. For

further information about NMEA sentences, refer to the National

Marine Electronic Association (NMEA) 0183 Specification.

NMEA 1-Hz output

Version 2.06 normally used the standard NMEA two-second

interval for outputting NMEA sentences (a 0.5-Hz output rate).

Version 2.07 lets you use one-second intervals, a rate of 1 Hz,

under limited circumstances, for NMEA and diagnostic data

output.

NMEA output

Using the 1-Hz output option, however, requires some thought

when specifying either NMEA 0183 (NMEA version 2.0) or

Raytheon (RAY 0183). Since there isn’t enough time to transmit

all available NMEA sentences within one second, you must select

for output only those that are needed. If you select more

– 3 –

032101 Addendum P/N GM210

sentences than can be output in one second, the following error

message is displayed:

SORRY, CAN’T DO THAT. TOO MANY SENTENCES FOR 1 SEC

INTERVAL

If this message is displayed, you must select fewer sentences.

Diagnostic output

The RS-232 diagnostic port also may overflow—when it’s

configured to either COPY PORT1 or COPY PORT2, and one of

the copied ports is in 0183 output mode—unless the diagnostic

port’s baud rate is fast enough to handle the number of

characters. Because the diagnostic port’s baud rate can now be

changed, the 941 will always display this precautionary message

before you actually reset the baud rate:

WARNING: ALL SENTENCES MAY NOT TRANSMIT AT DIAG BAUD

RATE. PRESS “ENTER” TO CONTINUE

Uninstalled DGPS antenna

In version 2.06, the 941 would display the error message DGPS

NOT INSTALLED if the unit was powered on for a short time

without the beacon antenna connected. The only way to clear

the message was to turn power off, then turn power on again.

In version 2.07, if you don’t install the DGPS antenna before

powering up the unit, the 941 displays the status message

SEARCHING. As soon as you connect the antenna, the unit

displays the message OK. You don’t have to turn power off and

on again.

Updated beacon list

Software version 2.07 contains an updated list of beacon names

and their locations.

– 4 –

Addendum P/N GM210 032101

Radio frequency interference (RFI)

A change in the software timing has reduced or eliminated radio

frequency interference that affected certain communications

receivers.

Software version 2.10 upgrades

This section describes several software enhancements made in

upgrading software version 2.07 to software version 2.10. Please

note that all of version 2.10’s enhancements apply to each later

software version, including versions 3.12 and 3.18 as described

later in this addendum.

Anchor-watch alarm honk

In the anchor-watch alarm function, you can set the 941 to honk,

in addition to beep, as long as you’ve connected a honker with

pin #14 on the interface connector. Once you set the anchor-

watch alarm to honk, a continuous honking sequence begins

when either your vessel moves outside the specified anchor-

alarm radius or if the navigation source (e.g., GPS) becomes

unavailable.

Note: On the ALARMS & BACKLIGHT screen, the ANCHOR

ALARM field must be set to ON.

To set the anchor-watch alarm to honk:

1. Press the STAR key once to display the ALARMS &

BACKLIGHT screen.

2. Press the CURSOR PAD to highlight the HONK OUTPUT

field, then press the EDIT ALARM menu key.

3. Press the CURSOR PAD to select ANCHOR ALM, then press

the ENTER key.

If your vessel moves outside the set anchor-alarm radius, for the

next 10 seconds, the exclamation point begins flashing and the

alarm automatically starts beeping (you’ll only hear the beeping

if you’ve set the ALARM AUDIO field to ON). The honk sequence

then starts for a total of 3.5 minutes: 1 second of honking

followed by 14 seconds of silence; 2 seconds of honking followed

– 5 –

032101 Addendum P/N GM210

by 13 seconds of silence; 3 seconds of honking followed by 12

seconds of silence, and so forth, until the honking is up to 14

seconds followed by 1 second of silence. This 3.5-minute honk

cycle repeats forever unless you clear the anchor alarm. This

honk does NOT automatically clear with the following

conditions:

•your vessel moves back into the anchor-alarm radius

•you change the anchor-alarm radius

•you select a new “drop anchor” position

•you turn off the anchor alarm

Instead, you must clear the anchor alarm in either of the

following two ways.

Option #1:

1. Press the STAR key once to display the ALARMS &

BACKLIGHT screen, then press the CLEAR ALARM key.

Option #2:

1. Press the STAR key once to display the ALARMS &

BACKLIGHT screen.

2. Press the CURSOR PAD to highlight the HONK OUTPUT

field, then press the EDIT ALARM key.

3. Press the CURSOR PAD to select either 200 PPNM or ALL

ALARMS, instead of ANCHOR ALM, then press the ENTER

key.

Honking for all alarms

Instead of only a beep for all alarms, you now can set all alarms

to honk. This honking will start simultaneously with the flashing

exclamation point on the ALARMS & BACKLIGHT screen. After

you set all alarms to honk, the system emits an output sound for

half a second, followed by silence for half a second. This

repeatable honking sequence stops when the alarms either

automatically clear or you manually clear them.

Note: If you want all alarms to honk, you must set the ALARM

AUDIO field to ON.

– 6 –

Addendum P/N GM210 032101

To set all alarms to honk:

1. Press the STAR key to display the ALARMS & BACKLIGHT

screen.

2. Press the CURSOR PAD to highlight the HONK OUTPUT

field, then press the EDIT ALARM menu key.

3. Press the CURSOR PAD to select ALL ALARMS, then press

the ENTER key.

Table 2 below illustrates how to set the anchor-watch alarm and

all other alarms to the desired audio.

Table 2: Beep and honk settings for all 941 alarms

Sound Type Setting(s) Description

Beep

Honk

All alarms

Anchor watch

All alarms

Anchor watch

Set alarm audio field to

Set anchor alarm field

to ON

Set alarm audio field to

Set honk output field to

ALL ALARMS

Set anchor alarm field

to ON

Set honk output field to

ANCHOR ALM

The standard 941 alarm

beep (has not changed).

The standard 941 alarm

beep (has not changed).

Exclamation point

flashes on the ALARMS

& BACKLIGHT screen;

simultaneously emits

an output sound for

half a second, followed

by silence for half a

second.

For 10 seconds, the

exclamation point

flashes on the ALARMS

& BACKLIGHT screen

and the alarm beeps (if

alarm audio is on), then

the honk sequence

starts (see “Anchor

watch alarm honk”

described on page 4 of

this addendum).

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