mcmurdo NAV-7 Guía
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NAVTEX RECEIVER
NAVTEX RECEIVERNAVTEX RECEIVER
NAVTEX RECEIVER
USER & INSTALLATION MANUAL
USER & INSTALLATION MANUALUSER & INSTALLATION MANUAL
USER & INSTALLATION MANUAL
mcmurdo
mcmurdomcmurdo
mcmurdo
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VESSEL IDENTIFICATION INFORMATION
Name
Call Sign
MMSI
NAV-7 S/N
Antenna Type
518 kHz
490 kHz
X frequencies
supported by antenna
4209.5 kHz
2008 McMurdo
Part No : 35-821
Applicability o this manual
This manual applies to NAV-7 equipment software Issue released March 2008.
Disclaimer
McMurdo is a brand name operated by Signature Industries Limited.
The information and illustrations contained in this publication are to the best of our
knowledge correct at the time of going to print. We reserve the right to change
specifications, equipment, installation and maintenance instructions without notice as
part of our policy of continuous product development and improvement. No part of this
publication may be reproduced, stored in a retrieval system or transmitted in any form,
electronic or otherwise without permission in writing from McMurdo, Signature
Industries Limited. No liability can be accepted for any inaccuracies or omissions in
the publication, although every care has been taken to make it as complete and
accurate as possible.
Contents
SAFETY NOTICES...........................................................................................5
ABOUT NAV-7 .................................................................................................6
INTRODUCTION ..............................................................................................7
OPERATION.....................................................................................................8
NAV-7 CONTROLS..........................................................................................8
OPERATION.....................................................................................................9
Receiving NAVTEX messages ........................................................................10
SETUP MODE ................................................................................................14
SYSTEM ALARMS.........................................................................................22
ADJUSTING THE DISPLAY ..........................................................................24
INSTALLATION..............................................................................................25
NAV-7 system overview ..................................................................................25
Electrical Connections .....................................................................................28
ANTENNA INSTALLATION...........................................................................34
OPTIONAL POWER SUPPLY UNIT 89-029 .................................................39
OPTIONS........................................................................................................40
EXTERNAL RECEIVER .................................................................................40
MAINTENANCE GUIDE.................................................................................40
TROUBLESHOOTING GUIDE.......................................................................41
NAVTEX STATIONS LIST .............................................................................44
END OF LIFE STATEMENT ..........................................................................48
DECLARATION OF CONFORMITY ..............................................................49
PRODUCT WARRANTY ................................................................................50
Page 5
SAFETY NOTICES
WARNING: Do not connect the NAV-7 main unit directly to a AC electrical supply,
as an electric shock or fire hazard could result.
WARNING: Do not connect the NAV-7 system to a DC supply exceeding 31 V or
reverse the supply polarity.
CAUTION: Do not bypass the built in fuse
CAUTION: The NAV-7 system is designed for operation in the temperature range -
15 °C to +55 °C. Do not use the system in environments which exceed this range.
CAUTION: The NAV-7 unit is not water-proof. Consequently it must be located in a
dry place and must be protected from direct contact with water.
CAUTION: Do not locate the NAV-7 unit in a position where;
a) the controls of the vessel may be obstructed.
b) it may obstruct normal movement around the vessel.
c) it may cause bodily injury.
CAUTION: Unauthorised opening of the NAV-7 unit or antenna units will invalidate
the warranty.
CAUTION: NAVTEX is for use as an aid to navigation and should not lead to a
reduction in the level of good seamanship required at all times.
CAUTION: Reception of NAVTEX messages cannot always be guaranteed and is
dependant on the quality of radio propagation at the time. No liability can be accepted
for the non transmission or non reception of NAVTEX messages.
CAUTION: Compass Safe Distances
NAV-7 main unit compass safe distance 0.87m
Compass deviation; 0.3º at 0.65m
1º at 0. 1m.
Recommendation
Connection o a source o UTC data to either the NMEA 0183 or the IBS port is
strongly recommended or best operation o the NAV-7.
Page 6
QUICK START
NAV-7 is extremely easy to operate:
• Apply power at the vessels power switch panel
• The NAV-7 will start up after a few seconds delay
• Set UTC time and date (automatic when connected to GNSS / GPS)
• The NAV-7 will now start to receive and display NAVTEX messages dependant
on the transmission schedule of the NAVTEX stations within the vessels current
region.
Note It may be several hours before the first message is received, this is dependant
on NAVTEX transmission coverage provided locally.
Take the time to read this manual carefully as it contains essential information
regarding the operation and maintenance of the NAV-7 and a useful background to
the NAVTEX system.
Should your have any questions, or require advice regarding McMurdo products our
website ‘frequently asked questions’ is a good place to start. From the web site you
can also leave a message for our customer service team, visit; www.mcmurdo.co.uk
ABOUT NAV-7
The NAV-7 has been designed to meet the requirements of IMO (Intentional Maritime
Organisation) MSC.1 8 (77) and IEC technical standard 61097-6 (Ed 2.0).
The NAV-7 has three separate receiver channels, one each tuned to 90 kHz, 518
kHz and 209.5 kHz. The NAV-7 will receive on all three frequencies simultaneously
in those parts of the world where transmissions are available (refer to Appendix 1).
The NAV-7 can be set up to filter out stations and/or message categories that are not
required by the User.
The NAV-7 is capable of being connected to an Integrated Bridge System (IBS),
transferring NAVTEX messages to other navigational aids if required. Note that the
IBS must be compliant with the serial port requirements of IEC 61097-6 (Ed 2.0).
The NAV-7 will accept UTC time & date information from the IBS port if available.
UTC time & date will be used to timestamp received NAVTEX messages.
Permanent installation of the NAV-7 can be made with either the bulkhead-mounting
bracket or the flush panel mounting kit provided.
The NAVTEX antenna should be mounted where it is elevated clear of metal objects
in a location where it cannot easily be damaged.
Page 7
INTRODUCTION
NAVTEX is a method of transmitting navigational warnings and weather forecasts
from designated coast radio stations. All English language transmissions are made on
the 518 kHz NAVTEX channel. Each NAVTEX station is allocated several time slots
during the day when it is permitted to transmit, normally at four hourly intervals. The
exceptions to this are gale warnings and search and rescue messages which may be
transmitted at any time.
Reception of 518 kHz NAVTEX transmissions is normally limited to an area of 200 -
300 miles radius around each transmitting station, although considerably greater
ranges are possible at night. Subject to IMO approval, additional local language
transmissions are sent on 90 kHz and on 209.5 kHz, NAV-7 supports simultaneous
reception of all three NAVTEX channels.
Designed to the latest International specifications, NAV-7 meets IMO requirements
under GMDSS and is designed for simplicity of operation. It will provide up to date
MSI (Marine Safety Information) and weather forecasts and is suitable for use by all
classes of commercial vessels and large pleasure craft. It will display and store
NAVTEX messages without manual intervention within designated areas of NAVTEX
service coverage.
If the vessel is located within the coverage area of several NAVTEX stations
(particularly at night), the NAV-7 may overwhelm you with information. It can therefore
be set up to display only those stations and message categories you want to receive
and which are applicable to the area in which the vessel is currently sailing.
Normally, routine NAVTEX messages are repeated at four hourly intervals. Provided
that the NAV-7 is left running, repeated messages are not displayed more than once.
Each message is retained for three days (72 hours) after its last reception before
being automatically deleted, unless the message has been marked as locked.
Full detail of the GMDSS NAVTEX service is published in the Admiralty List of Radio
Signals Volume 5, Global Maritime Distress and Safety System (GMDSS). Published
by the United Kingdom Hydrographic Office.
The IMO and various national coastguards also have informative websites; see the
links page at www.mcmurdo.co.uk
Page 8
OPERATION
NAV-7 CONTROLS
The NAV-7 has been designed to be easy to use with an intuitive user interface and
softkeys.
Main display area
Scroll bar
Softkeys
Indicator LED
Tracker pad
Enter key
Backlight key
Softkey labels
UTC (if available)
Status icons
Position (if available)
Page 9
Display Icons
The NAV-7 displays various icons in the status bar at the top of the display.
SAR, warning alarm
Unread message indicator
The antenna or antenna cable is faulty
The 518 kHz receiver is receiving
The 90 kHz receiver is receiving
The 209.5 kHz receiver is receiving
The external receiver is receiving
OPERATION
Switch on the NAV-7 by applying power via a circuit breaker or switched fuse.
There will be a few seconds delay whilst the software loads the contents of the
NAVTEX message store during which time the front panel red LED will blink.
The NAV-7 start-up screen will now be shown.
This screen disappears after 30 seconds; it may be removed sooner by pressing any
key.
Page 10
The NAV-7 is now ready to receive NAVTEX messages.
Receiving NAVTEX messages
When the NAV-7 begins to receive a signal, one or more of the receiver icons at the
top of the screen will appear to indicate which of the receivers is active.
When a complete message has been received, a pop-up appears on the display
indicating that a new message is available and the "unread message" icon flashes.
The message can be read by pressing the Enter key, or the popup can be removed
without reading the message by pressing the Right key. As each new message is
received, the NAV-7 may also generate a single short beep to attract attention to the
new message. This audible alert can be disabled on the Setup mode: System options
page if it is not required.
Any messages that are not read immediately will be marked with the "unread
message" symbol in both the Index and Summary modes. The "unread message"
icon at the top of the display continues to flash until all messages have been read.
Note that while a popup is on display only the Enter or Right buttons have any effect;
all other keys are disabled until the popup is removed.
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