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Summary of Contents for mcmurdo NAV-7
- Page 1 NAV-7 GMDSS Tri-channel NAVTEX Receiver User & Installation Manual...
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Page 2: Safety Warnings
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 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. -
Page 3: Table Of Contents
Contents QUICK START..................1 INTRODUCTION ..................2 ABOUT YOUR NAV-7................3 OPERATING THE NAV-7 ................. 4 Navigating the NAV-7 user interface..............5 Icons ........................6 Receiving NAVTEX messages ................6 Alarms......................... 7 Finding and viewing NAVTEX messages .............. 7 Message displays ....................8 Message index display.................. - Page 4 NAV-7 system overview ..................20 Trunnion mounting the display................20 Trunnion mounting the display................21 Flush mounting the display..................22 DISPLAY ELECTRICAL INSTALLATION ..........24 Ship’s earth connection..................24 12V or 24 V DC power connection...............25 Signal cable connections ..................25 Signal line termination..................26 Connecting to the IBS serial interface..............26 Connecting to the NMEA 0183 interface ..............27...
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Page 5: Quick Start
The support pages contain frequently asked questions about the NAV-7 that may be useful. There is also a NAVTEX database providing a list of operational NAVTEX stations and their details. -
Page 6: Introduction
It will display reliable information day after day within designated NAVTEX coverage areas. Installation is straightforward. Connect the NAV-7 to a 12 or 24 volt DC supply and connect a suitable antenna. Switch it on, and it will start displaying and storing NAVTEX messages without further manual intervention. -
Page 7: About Your Nav-7
The NAV-7 has been designed to meet the requirements of IMO MSC.148 (77) and IEC 61097-6 (Ed 2.0). The NAV-7 contains 3 receiver channels, one each tuned to 490 kHz, 518 kHz and 4209.5 kHz. The NAV-7 will receive on all 3 frequencies simultaneously in those parts of the world where transmissions are available (refer to Appendix I and to the McMurdo website at www.mcmurdo.co.uk for latest information). -
Page 8: Operating The Nav-7
OPERATING the NAV-7 Switch on the NAV-7 by applying power via a circuit breaker or 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. -
Page 9: Navigating The Nav-7 User Interface
Navigating the NAV-7 user interface The NAV-7 has been designed to be easy to use with an intuitive user interface and softkeys. Backlight key Softkey labels UTC (if available) Status icons Position (if available) Main display area Scroll bar Softkeys... -
Page 10: Icons
The external receiver is receiving 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"... -
Page 11: Alarms
'D' (search and rescue), 'A' and 'L' (navigational warnings) and 'E', 'B' and 'C' (meteorological warnings). When a message with any of these message categories is received the NAV-7 operates its alarm relay contacts and transmits an NMEA "ALR" sentence to the currently selected alarm port. -
Page 12: Message Displays
Message displays view first lines of each message select another message group move cursor to newest message required message selected message select time frame oldest message for messages Message index display view selected message select next (newer) message Go to next group (see text) go to previous group (see text) -
Page 13: Message Index Display
Message index display The Message index display shows the identifiers of messages from a specific receiver. Unread messages have an “envelope” (*) mark; locked messages (see Ñ Full message display) have a “key” ( ) mark. Message identifiers can be expanded to show either the first two lines or the full message by selecting the desired message and pushing the appropriate softkey. -
Page 14: Minimising The Number Of Navtex Messages Displayed
Minimising the number of NAVTEX messages displayed After the NAV-7 has been switched on for a while there will be a large number of NAVTEX messages stored in memory. These can be quite overwhelming if the user is looking for particular message categories or an individual message. -
Page 15: Setup
In the Message Index display only the message identifier is visible. It is recommended that the User or Installer takes time to set up the NAV-7 to filter out those stations and message categories that are not required. In this way the display is kept uncluttered;... -
Page 16: Colour Coding Of Navtex Message Headers
Colour coding of NAVTEX message headers The NAVTEX message information bars are colour coded for each type of message as defined in the table below. Message category Colour Navigational warning CYAN Meteorological warning GREEN Ice report GREEN Search and rescue information Meteorological forecast GREEN Pilot service message... -
Page 17: Setup Mode: Receiver Options
Setup mode: Receiver options The Setup mode: Receiver options page contains diagnostics to assist with installing and fault finding the NAV-7. The lower part of the display is a monitor area which shows all received NAVTEX characters in real time from the receiver selected as the monitor source, including the phasing character (? ) and receive character error symbol (à), regardless of... -
Page 18: Using Setup Mode: Receiver Options Screen
Setup parameter Comment Enabled for active antenna Antenna power or Disabled for passive antenna or Auto sense allows the NAV-7 to detect the antenna type Antenna status Unknown: see Troubleshooting guide Active: an active antenna is connected Passive: a passive antenna is connected Overload: excessive current;... -
Page 19: Setup Mode: System Options
Correct operation, NAVTEX to 518 kHz data will be shown in monitor window Setup mode: system options The Setup mode: system options page contains general information about the NAV-7 and allows control over several aspects of the user interface and external interfaces. -
Page 20: Setup Mode: Serial Options
Setup mode: serial options The Setup mode: Serial options page contains setup and configuration parameters for the two serial ports on the NAV-7 unit. The lower section of the display provides a monitoring facility for incoming messages on the selected port. -
Page 21: System Alarms
The front panel LED and the buzzer are programmable – see Setup mode: system options. Consequently, these indicators may or may not activate to indicate an alarm. SIGNAL MONITOR The NAV-7 continuously monitors the signals being received, and generates an alarm should any signal channel give indication of malfunctioning. -
Page 22: Lcd Setup
LCD SETUP LCD setup day & night modes To enter LCD setup mode, press and hold the illumination key. After a few seconds the LCD setup: Day mode page will be displayed. u) keys to adjust the LCD contrast. Use the left and right (t Use the up and down (p and q) keys to adjust the LCD brightness. -
Page 23: Serial Interfaces
NAV-7 to other equipment such as an integrated bridge system or a PC running charting software. The interface operates all the time that the NAV-7 is switched on – there is no ON/OFF control for the interface. The IEC 61162-2 compatible serial interface also allows the connection of a serial printer. -
Page 24: Display Physical Installation
DISPLAY PHYSICAL INSTALLATION NAV-7 system overview (for simplicity, power is shown diagrammatically throughout; fuses, circuit breakers, alternative supplies, etc are omitted) -
Page 25: Trunnion Mounting The Display
Trunnion mounting the display The standard bulkhead mounting U-Bracket can be used to mount the NAV-7 above or below a horizontal (or near horizontal) surface. Hole size to fit #10 screw: 3.5mm Drilling drawing (mm) Select hole size to suit method of fixing mountings –... -
Page 26: Flush Mounting The Display
Flush mounting the display If the NAV-7 is to be mounted through a flat panel, use the flush mounting kit provided. A cutting template is supplied with the flush mounting kit. This template carries full fitting instructions.
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