NKE HIGH FREQUENCY GPS Manuale utente

Zi de Kerandré –Rue Gutenberg –56700 –HENNEBONT

http://www.nke.fr –0 33 297 365 685

HIGH FREQUENCY GPS

Product # 90-60-397-000

USER MANUAL AND

INSTALLATION GUIDE

REV 2

2 33-60-056-000 High frequency GPS –user manual

Content

1Operation............................................................................................................. 3

1.1 Introduction.................................................................................................... 3

1.2 System configuration..................................................................................... 3

1.3 Technical specification .................................................................................. 4

1.4 List of channels displayed ............................................................................. 4

1.5 Damping the channels................................................................................... 5

1.6 Processor compatibility.................................................................................. 5

1.7 NMEA 183 output.......................................................................................... 5

1.7.1 High Speed rate...................................................................................... 6

1.7.2 Low speed frequency.............................................................................. 6

1.8 1PPS output .................................................................................................. 6

1.9 Audible alarm................................................................................................. 6

1.10 Magnetic variation...................................................................................... 7

1.11 Electromagnetic compatibility..................................................................... 7

1.12 1st level trouble shooting............................................................................. 7

2Installation........................................................................................................... 8

2.1 Preparing installation..................................................................................... 8

2.2 Mounting on a small mast or pushpit............................................................. 8

2.3 Connection to the nke bus............................................................................. 9

2.4 NMEA connection.......................................................................................... 9

3 33-60-056-000 High frequency GPS –user manual

1 OPERATION

1.1 Introduction

Thank you for purchasing the nke High Frequency GPS.

The nke High Frequency GPS, WAAS/EGNOS enabled (differential system which

enhances the accuracy of GPS), is connected directly to the Topline bus and delivers

data at high frequency, up to 10Hz.

The NMEA output can be set up. Data is exported at 10Hz in NMEA format, and is

compatible with the nke Processor.

An external alarm output allows a « mooring alarm » function.

IMPORTANT

Please take time to read this manual carefully before you start installation.

Any connection to the TOPLINE bus must be performed through the specific

interface box #90-60-417 and only with the TOPLINE bus cable #20-61-001.

1.2 System configuration

4 33-60-056-000 High frequency GPS –user manual

1.3 Technical specification

Cold start : 29 seconds (Time To First Fix),

Hot start : 25 seconds (Time To First Fix),

Sensibility : -165dbm (tracking),

Geodetic system : WGS84,

Compatibility : WAAS/EGNOS/MSAS

Max acquisition rate : 20Hz,

Positioning accuracy : 2,5m CEP

Protocol : 1 Topline + 1 NMEA0183-HS (38400 bauds)

Max consumption : 600mW

Power supply : 9V to 33Volts (12 volts via Topline bus)

Cable : 10m

Protection : IP67

Operating temperature : -10° à +50°

NMEA version : 3.01

Weight : 500g

1.4 List of channels displayed

When the nke High Frequency GPS is connected to the Topline bus, the following

channels are created on your system.

CHANNEL

DISPLAY

UNITS

Latitude

LAT

Degrees

Longitude

LONG

Degrees

Course over ground

COG

Degrees

Speed over ground

SOG

Knots

Time

TIME

Hours/minutes/seconds

Date

DATE

Day/month/year

Magnetic variation

Mag Var

Degrees

Please note: The Latitude and Longitude channels cannot be displayed on the

Gyrographic display.

The Magnetic Variation channel is available to display only on the Gyrographic

display.

In case the satellite fix is lost, the system keeps the last known data live on the

Topline bus for 20 seconds.

When the system is switched on the error message « Fail » will be displayed as long

as the nke High Frequency GPS has not acquired a satellite fix.

5 33-60-056-000 High frequency GPS –user manual

1.5 Damping the channels

The channels « SOG » and « COG » allow damping to be applied to the value

displayed.

The damping level controls the rate at which the displayed value is updated.

Adjustment may be required to the Speed Over Ground channel according to the sea

conditions to stabilise the the value displayed.

The damping value ranges from 1to 32, with 8as the default value for SOG and 2for

GOG. The lower the value, the faster the value displayed is updated.

The maintenance software Toplink and the Multigraphic (firmware ≥ V1.7) can be

used to adjust this setting.

1.6 Processor compatibility

When a HR or REGATTA processor is installed in a system, the nke High

Frequency GPS does not broadcast to any channel on the Topline bus. This is to

prevent any address conflict. In this specific situation, only the NMEA0183 is active.

1.7 NMEA 183 output

The nke High Frequency GPS has a NMEA 183 output (yellow wire) that can be set

up. This is done via the Topline bus with the Toplink software. Your specialist

dealer can set this up:

Baud rate (0 = 4800, 1 = 9600, 2 = 19200, 3 = 38400, 4 = 57600 or 5 =

115200).

The Baud rate will determine the NMEA sentences and output frequency.

6 33-60-056-000 High frequency GPS –user manual

1.7.1 High Speed rate

The default NMEA 183 output setup complies with the NMEA-HS protocol

(38400 bauds) as the table below:

Sentence

Description

Frequency

$GPGGA

GPS Fix Data

10 Hz

$GPGSA

GNSS DOP and Active Satellites

1 Hz

$GPGSV

GNSS Satellites in View

1 Hz

$GPRMC

Recommended Minimum Specific GNSS Data

20 Hz

$GPVTG

Course Over Ground and Ground Speed

1 Hz

$IIXDR

Internal temperature

1 Hz

$IIXDR

Batteries voltage

1 Hz

1.7.2 Low speed frequency

For users who wish to set up the NMEA output at the standard 4800 Baud

rate, the frequencies will be limited as shown in the table below:

Sentence

Description

Frequency

$GPGGA

GPS Fix Data

0,5 Hz

$GPGSA

GNSS DOP and Active Satellites

0,5 Hz

$GPRMC

Recommended Minimum Specific GNSS Data

5 Hz

$GPVTG

Course Over Ground and Ground Speed

0,2 Hz

$IIXDR

Internal temperature

0,2 Hz

$IIXDR

Batteries voltage

0,2 Hz

1.8 1PPS output

The green wire is used for the GPS 1PPS output. This output (“1 pulse per

second”) allows synchronizing with UTC.

1.9 Audible alarm

An embedded buzzer is used to warn the users about the various working

modes the nke High Frequency GPS antenna is using:

Satellites search: repeated short bips (at 1Hz)

2D fix mode: 2 long and unique bips

3D fix mode: 3 long and unique bips

7 33-60-056-000 High frequency GPS –user manual

1.10 Magnetic variation

The magnetic variation is calculated by an algorithm from the current GPS position

and a data table which is updated once every 5 years

The Magnetic Variation channel is updated every 10 minutes.

1.11 Electromagnetic compatibility

The nke High Frequency GPS complies with CEM regulation which are

compulsory for CE certification. Relevant regulation: NF EN 60945 regarding all

navigation systems and marine radio communication.

1.12 1st level trouble shooting

In this section you can find solutions to simple problems which does not require

calling a specialist and without loosing time. Please read carefully this manual before

calling customer support.

Trouble

Possible causes and solutions

Topline network does not display any GPS data

Please check that the GPS is correctly connected to the

nke bus. When starting the system, the nke High

Frequency GPS generates a short audible signal once

every second.

If the problem is not solved, please contact your nke dealer.

8 33-60-056-000 High frequency GPS –user manual

2 INSTALLATION

2.1 Preparing installation

Choosing the right location for the antenna is very important in order to receive an

accurate GPS signal. The

nke High Frequency GPS

antenna can be mounted on a

pushpit or a specific small mast. Think about the following requirements when

choosing the location:



The

nke High Frequency GPS

antenna

must be installed in a location free

from any objects shielding the horizon.

A low location is preferable as this will

ensure the best stability for the antenna.



Choose a location far from other antennas such as radar or VHF to avoid

interferences.



Distance to a compass must exceed 30cm to avoid interference..



Avoid the radar range.



The antenna must be as horizontal as possible.



On a sailing boat, avoid installing on the mast head.



In order to reduce the noise generated by other magnetic sources such as

radar, radio, engine or generators, ensure that cables run more than one meter

from other cables.

2.2 Mounting on a small mast or pushpit

The nke High Frequency GPS is compatible with all standard fittings

available on the market: Ø 1’’ (2,54cm), 14 TPI (Threads Per Inch).

The wire can output either on the side or the centre of the fitting.

WARNING

During installation, be carefull not to damage the cable. Water protection

can be compromised by a dammaged cable causing serious damage to your nke

High Frequency GPS.

9 33-60-056-000 High frequency GPS –user manual

2.3 Connection to the nke bus

2.4 NMEA connection

BLANC

GND

NOIR

BLANC

GND

NOIR

12V

GND

NMEA-

NMEA+

NMEA-

NMEA+

init

Connection box

90-60-417

BLANC

GND

NOIR

12 V

Figure 2: Connection of the Topline bus

Yellow + NMEA

Braid -NMEA

White +

Braid - 12V

Do not connect and isolate red, green and black

Figure 3: NMEA connection

10 33-60-056-000 High frequency GPS –user manual

NOTES

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_________________________________________________________

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