mcmurdo NAV6 Installation Manual -

Transcription

1 mcmurdo NAV6 Installation Manual

2 Important Information This equipment is not approved for use by SOLAS convention vessels within the Global Maritime Distress and Safety System (GMDSS) It is intended for use by leisure craft and other non-solas vessels wishing to participate within GMDSS Safety Warnings This instrument is for use as an aid to sailors and should not lead to a reduction in the level of good seamanship required at all times Reception of messages cannot always be guaranteed as this depends on local radio propagation The correct magnetic variation must be input at the navigation instruments (e.g. GPS, electronic compass) for the accurate display of COG, set, waypoint bearing and heading. The technical data, information and illustrations contained in this publication were 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. 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. Copyright 2003 McMurdo. All rights reserved.

3 Contents 1. Installation Installation of NAVTEX Sensor Mounting the Display Unit Connecting Up NAV6Aplus Antenna Options Connecting Multiple Display Units Testing the NAV6 After Installation Maintenance and Trouble Shooting Glossary Options Specification Outline Drawings...41 Appendix I: NMEA Sentences Supported...42 Appendix II: Optimising NAVTEX Reception Appendix III: Frequently Asked Questions...45 Appendix IV: Sensor cabling Declaration of Conformity Product Warranty End of Life Statement...52 NOTE: This Installation Guide covers all models in the NAV6 range. The NAV6dual does not support all the features listed. Where this is the case, the symbol marks the unsupported feature. It is recommended that installation be carried out by a recognised marine installation engineer.

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5 1. INSTALLATION A basic NAV6 installation consists of a NAVTEX sensor (for outside mounting), an LCD Display unit, screw terminal block, 12Vdc power supply feed and a connection to your GPS NMEA output (if required). NOTE: This diagram shows the sensor supplied with NAV6plus and NAV6dual. Details of the receiver unit supplied with NAV6Aplus are shown on Page 8. The maximum permitted length of cable between the display and sensor is 50 m - use cable extension kits if required Expanded NAV6 installations can also include: NAV6printer, paper roll NAVTEX message & log printer NAV6repeater display units NAV6hub inter-connect box with 1 or 4 separate NMEA inputs Refer to Page 18 of this guide for further details. Page 1

6 2. INSTALLATION OF NAVTEX SENSOR The NAVTEX Sensor is a rugged waterproof unit however care should be taken to position it in a suitable location to optimise reception. If in any doubt as to the suitability of a location to mount the sensor refer to Appendix II. The Sensor should be mounted approximately vertical in an elevated position where it will not be engulfed by sea water Avoid close proximity to adjacent obstructions, other antenna or superstructure by at least 0.5 metres Never position the Sensor level with a Radar antenna aperture or within 1m of a SSB transmitting antenna The top of a pushpit rail or radar arch are a favoured locations If necessary, raise the NAVTEX sensor on an extension pole to achieve a clear location The sensor has a standard marine 1" 14 tpi threaded mount. Due to the wide variety of possible mounting methods (horizontal rail, vertical rail, deck, etc). McMurdo does not supply a sensor mounting bracket as standard. A plastic 25 mm rail mount is available as an option - part number Other types of brackets and extension pole fittings are readily available from most marine electronics stores Select a bracket type that will allow the sensor cable to pass freely through the centre of the mounting boss or exit via a slot Mounting the NAVTEX Sensor Place the Sensor on top of the antenna mount Holding the top of the Sensor, rotate the large plastic nut on the bottom in order to engage the thread of the antenna mount Continue to tighten the nut until the Sensor is locked Note that it is possible to position the Sensor to face whichever way the user desires Do not use a wrench to tighten the nut hand-tighten only Page 2

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8 Sensor Extension Whip Option Provided the NAVTEX sensor has been mounted in accordance with the fitting instructions, the optional whip extension is not required. If you appear to be experiencing inadequate reception performance, you should first consider moving the sensor to a more suitable location. If this is not possible, the optional whip extension could be tried, however any resulting improvement to reception is likely to be dependent on several factors. Refer to Appendix II: Optimising NAVTEX Reception. Fitting 45cm whip extension option - part number Remove the plastic blanking plug on the top of the Sensor Unit. Apply a smear of grease to the thread to ensure that salt deposits do not cause the thread to seize up Screw in the Extension Whip Sensor Unit Cable The sensor cable is attached at the sensor and cannot be disconnected. The standard 10m cable length may be extended to a maximum total length of 50m by using sensor cable extension kits: Part number m-sensor cable extension kit Part number m-sensor cable extension kit Shortening the cable will not affect performance Routing of the Sensor Cable The sensor cable connects to the display unit screw terminal block or an expanded system NAV6hub unit. The direction to route the cable is from sensor to display Leave a service loop in the cable, close to the sensor location (under the deck is a good place) that will allow the sensor cable to be pulled back and a connection made should the sensor ever need to be removed for service Strap the cable at regular intervals to stop any vibration, taking care to avoid potential tripping hazards Avoid bending the cable through tight radii of less than 4 cm Where the cable passes through tubes, bulkheads or decking, use rubber grommets or glands to prevent chafing A waterproof deck gland (Part number ) is recommended for the sensor cable when passing it through a fibreglass or wooden deck surface. Page 4

9 3. MOUNTING THE DISPLAY UNIT The Display Unit is waterproof when flush panel mounted and can be installed above or below decks as required. Standard display fitting is through a round hole cut in a flat panel with two fixing screws. The U bracket mounting kit option - Part number is required to mount the display on a bulkhead, tabletop or to hang it from a deckhead. IMPORTANT: Never attempt to install the display unit directly onto a curved surface, as this may cause the housing to crack. The best viewing angle is square on to the display. Select a suitable mounting location, one that is that is flat, free from excessive heat and vibration and which is convenient for routing the 1m long connecting cable. When panel mounting consider rear cable access. Avoid direct sunlight. If mounting the display unit in an exposed location protect it when not in use by using the suncover option - Part number Position the Display at least 0.5 metres away from other electronic equipment including GPS antennas, VHF radios, Radar etc. Observe recommended compass safe distance of 1m The display unit cable connects directly to the screw terminal block (or inside an expanded system NAV6hub). Mount the terminal block close to the display (1m max.) in a convenient, accessible but dry location. Mounting the Display Unit You will need: 102 mm (4") hole saw 3 mm drill for fixing screws, 4 mm drill for fixing bolts. Cross head screwdriver. Drilling template Method: Prepare the flat mounting surface. Check behind for the necessary clearance; a minimum of 50 mm is required. Use the supplied template to mark out the centres for the 104 mm hole and the two 3 mm holes. Re-check that all is clear behind the panel, then drill the holes. Gently remove the two screw covers from the Display Unit, easing them away from the display. Apply a releasing agent (grease or petroleum jelly) to the rubber seal around the back of the NAV6. This will prevent the seal from sticking to the bulkhead surface over time. Position the NAV6 display over the holes and insert the screws. Carefully tighten the screws; do not over-tighten. Clip the screw covers in place. Should you have difficulty replacing the covers, slacken off the screws slightly. Page 5

10 U - Bracket Mounting Option See fitting instructions supplied with the U-bracket Mounting Kit. Page 6

11 4. CONNECTING UP The display connecting cable consists of six twisted pairs within a foil screen and drain wire: Twisted Pair Core Colour Signal description RED twisted with BLACK RED +12V input (Battery) BLACK Negative input BLUE twisted with BLACK BLUE NMEA A input BLACK NMEA B input BROWN twisted with BLACK BROWN RS232 TX output BLACK RS232 RX input WHITE twisted with BLACK WHITE sensor DATA B BLACK sensor DATA A YELLOW twisted with BLACK YELLOW sensor POWER o/p BLACK sensor GND o/p GREEN twisted with BLACK GREEN programming signal BLACK spare Screen Silver Ground The sensor cable consists of two twisted pairs, within a foil screen with drain wire: Twisted Pair Core Colour Signal description Display connection YELLOW twisted with BLACK YELLOW with BLACK band BLACK with YELLOW band POWER from display POWER GND from display YELLOW of YELLOW pair BLACK of YELLOW pair WHITE twisted with BLACK WHITE with BLACK band BLACK with WHITE band DATA A from display DATA B from display WHITE of WHITE pair BLACK of WHITE pair Screen Silver Screen (Ground) Silver Note: some early sensor types used a core number to colour scheme. If your sensor cable has a black outer cover, refer to Appendix IV for crossreference detail. Power requirement The NAV6 display should be connected to a nominal 12 Vdc switched power supply capable of providing a continuous 350 ma. Use a minimum of 2 mm cross section power cable (not supplied) to connect to the power supply source. Connect the display unit to one side of the terminal strip, connect the other system items and power supply to the other side Page 7

12 Wire cores connect same colour to same colour Wire cores are twisted and paired together, take care not to mix the black cores When inserting cores into the terminal strip take care not to screw down on the plastic insulation Connecting the Sensor Connect the YELLOW and BLACK twisted pair from the sensor to the YELLOW and BLACK twisted pair of the display Connect the WHITE and BLACK twisted pair from the sensor display to the WHITE and BLACK twisted pair of the display Connect the silver, (screen) wires together. Do not connect them to a power supply 0V, refer to note following regarding system grounding Note: The black of the green pair is not used; it is folded back and sleeved out of the way. Page 8

13 Connecting the NAV6Aplus receiver unit Prepare the short connection cable and connect following the J100 connections shown above. Power supply Connect the RED wire to boat s positive (12 V) supply and the BLACK wire to negative (0 V) supply. You may want the NAV6 to remain operating even when the rest of your instruments are turned off. To allow for this the display unit should be connected to a keep alive or direct to battery power source Remember the display unit has no power switch of its own and will remain on whenever power is applied. So to allow the system to be turned off when leaving the boat, or for system isolation for service a 1.5 A circuit breaker or a 1.5 A fuse and switch should be installed in the power supply feed cable. Note: Vessels that have galvanic isolation may need to install a DC to DC isolator converter. 24 V vessels should install a 24 V / 12 V DC to DC converter. If in doubt ask your dealer. Connecting NMEA data Connect the BLUE and BLACK twisted pair from the Display Unit to the NMEA data source (GPS) Connect the BLUE core to the NMEA A signal. Connect the BLACK core to the NMEA B* signal. *sometimes called NMEA Common or Signal Ground (Trouble shooting: Note that NMEA signal terminology can vary between manufacturers try swapping the BLUE and BLACK wires if the NMEA input does not work initially no damage will be done) Source of NMEA data You call still receive NAVTEX messages even without a GPS being connected, however if you do connect a GPS to the NAV6 it will: Synchronise its internal clock with UTC time Automatically filter the message display to show only messages from NAVTEX stations that are within recommended range Display a wide variety of NMEA data in a selection of formats It may be necessary to setup the NMEA data source to provide all the required NMEA sentences. Refer to the user guide of your GPS for details. Appendix I lists all the NMEA sentences supported by the NAV6. If you connect a networked instrument system (with GPS) you may need an NMEA adapter box to convert a proprietary serial data protocol to the standard NMEA format used by the NAV6. Refer to the instrument systems user guide for details. Page 9

14 We do not guarantee compatibility with all GPS receivers or all instrument systems. However, this can normally be achieved for most systems by a skilled installer. For notes on achieving compatibility with various systems, see Appendix III: Frequently Asked Questions. Note that this section is regularly updated on our web site: If you are uncertain of your abilities in this area, you are strongly advised to seek the services of a qualified marine electronics installer. System Grounding Normally it is not necessary to install a grounding connection. Where local electrical interference is thought to be limiting receiver performance, it can sometimes be of benefit to ground the screen of the cable that connects the Sensor Unit to the Display Unit. Connect the silver (screen) of the interconnecting cables at the display terminal block to a low noise electrical ground. This can either be a specially installed ground plate, or the keel bolts on a non-encapsulated keel, or bonded hull skin fitting. Use a minimum cable size of at least 1.5 mm². If electrical isolation is to be maintained then this should be done via a 0.1uF 50 V capacitor. If in doubt consult a qualified marine electronics installer. Connecting a PC, Printer or Plotter To display NAVTEX messages or logbook information on your PC, use a terminal emulator program such as HyperTerminal. The PC serial port or printer should be set to 4800 baud, 8 data bits, no parity, 1 stop bit, and no flow control. 9 way D type female pin number Signal NAV6 display connection 1 No connection - 2 TX Brown 3 RX Black (Paired with brown) 4 No connection - 5 GND Black (Paired with red) 6 No connection - 7 No connection - 8 No connection - 9 No connection - PC 9pin RS232 interface port to NAV6 pin assignment, only 3 pins are connected. Page 10

15 5. NAV6APLUS ANTENNA OPTIONS The NAV6Aplus supports a wide range of different types of NAVTEX antenna. The choice of antenna to use can be dependent on personal preference or whether you already have an existing antenna that is suitable. In the case of a sailing vessel, it is sometimes possible to use a section of insulated rigging wire as an effective NAVTEX antenna. As a general rule, the NAVTEX antenna should always be mounted in an external, elevated location, clear of other antennae or electrical equipment such as wind powered generators. The NAV6Aplus is compatible with most Active wide-band antenna systems that provide a output in the frequency range of khz or wider, 100 khz 30 Mhz being common. Active whip antenna A typical active antenna would comprise of a short (1 m) stainless steel or fibreglass whip section with an built-in signal amplifier. Active antennae always require a power supply connection, & if required this can be provided directly by the NAV6Aplus by setting a jumper link at installation. If a Power Supply Unit has been supplied by the antenna manufacturer then this can be used instead of supplying power from the NAV6Aplus. Recommended Active antenna Part number Low profile 1 m stainless steel active whip antenna with 20 m cable. Passive NAVTEX antenna Passive antennae are well suited for use with the NAV6Aplus, they must always be located in an elevated position with at least 0.5 m horizontal separation from any object or rigging wire. McMurdo makes two versions of a compact passive NAVTEX antenna. Recommended Passive antennae Part number ANT4/w Passive NAVTEX antenna 518 & 490 khz complete with 10 m of attached cable. White glass fibre construction with chrome base fitting. 14 tpi screw thread base mounting. Part number NAV-ANT/w 518 & 490 khz Passive NAVTEX antenna, features PL socket connection. White glass fibre construction with 1 chrome nut/bolt mount fitting. Page 11

16 Wire antenna Use an insulated section of a sailboat s backstay wire or simply run an insulated wire around your cabin headlining. Both of these options are catered for in the NAV6Aplus, the suitability of each option will greatly depend upon the vessel in question. For instance, running a wire antenna around the cabin in a steel vessel would not make for a very effective NAVTEX antenna. Where possible, an outside antenna is always preferred. Sometimes its even possible to use an insulated safety wire running around a side deck as an effective NAVTEX wire antenna. Connection of a wire antenna directly to the NAV6Aplus Hi-Z input terminal is possible. However, an antenna of this type may be more subject to the effects of external influences than a correctly matched 50 ohm antenna and coaxial cable down lead. When connecting to the Hi-Z input it is important to locate the NAV6Aplus receiver unit within 1 m of the antenna feed point and route the antenna cable well clear of all electrical wiring or the overall installation performance may suffer. Matched wire antenna A 'balun' (antenna matching) transformer and 50 ohm-coax cable is recommended where a wire antenna is used. This should be connected to the NAV6Aplus 50 ohm input. The NAV6Aplus receiver unit can then be mounted close to the main NAVTEX display. Page 12

17 Passive 50 ohm Antenna Suitable antennas are the or , although an equivalent antenna specified for operation at 490 khz and 518 khz would be acceptable. The Receiver Unit pcb link settings should be: LK100 should not be fitted LK101 should not be fitted The antenna should be connected to ANT+ (antenna coax centre) and ANT- (antenna coax screen) on the receiver unit connector. J100 CONNECTOR CONNECTION PIN 1-2 Antenna coax centre connection 3 Antenna coax screen Page 13

18 Active 50 ohm Antenna with External PSU Interface Box A suitable antenna is the , although an equivalent antenna specified for operation at 490 khz and 518 khz would be acceptable. If the active antenna is supplied with an external PSU interface box then this should be used. TO 12V PSU The Receiver Unit pcb link settings should be: LK100 should not be fitted LK101 should not be fitted The antenna should be connected to ANT+ (antenna coax centre) and ANT- (antenna coax screen) on the receiver unit connector. J100 CONNECTOR CONNECTION PIN 1-2 Antenna coax centre connection 3 Antenna coax screen Page 14

19 Active 50 ohm Antenna without External PSU Interface Box (antenna power provided by NAV6Aplus) A suitable antenna is the , although an equivalent antenna specified for operation at 490 khz and 518 khz would be acceptable. The Receiver Unit pcb link settings should be: LK100 should be fitted in the 50ohm active antenna position LK101 should be fitted in the Hi-Z antenna position +12 V DC is present on J100 pin 2 The antenna should be connected to ANT+ (antenna coax centre) and ANT- (antenna coax screen) on the receiver unit connector. J100 CONNECTOR CONNECTION PIN 1-2 Antenna coax centre connection 3 Antenna coax screen Page 15

20 Using a Backstay as an Antenna Where possible use a Balun 50 ohm matching transformer. The Receiver Unit pcb link settings should be: LK100 should not be fitted LK101 should not be fitted The Balun 50 ohm output cable should be connected to ANT+ (Balun coax centre) and ANT- (Balun coax screen). Insulator 6-15 metres Insulator Balun - wire matching transformer NAV6Aplus in cabin Coax cable - any length J100 CONNECTOR CONNECTION PIN 1-2 Balun coax centre connection 3 Balun coax screen Page 16

21 Using a Wire in the Cabin as an Antenna An insulated rigging wire or a long wire routed safely out of harm s way (for instance under the headlining in your cabin) may be used as an antenna in some circumstances. Note that this method of connection is not particularly recommended; a 50 ohm NAVTEX antenna mounted above decks is the preferred approach. The Receiver Unit pcb link settings should be: LK100 should be fitted in the Hi-Z antenna position LK101 should be fitted in the Hi-Z antenna position The wire should be connected to the HI-Z input on the receiver unit connector. J100 CONNECTOR CONNECTION PIN 1 Hi-Z wire antenna Insulator Insulator Wooden or composite vessels only Not recommended for steel, concrete or aluminium vessels Maximum 1metre open wire feed cable, keep well clear of other wires NAV6Aplus in cabin, close to insulated rigging wire Page 17

22 PWR SBY 6. CONNECTING MULTIPLE DISPLAY UNITS Where multiple displays are required, these may be purchased as an option (part number ). In addition, a NAV6hub (part number ) is required to interconnect the equipment. Note: When multiple displays are used, only the main display must be set to master Display Mode and all other displays must be set as slaves; see Setup Mode, NAVTEX View, Options Page. Note: When NMEA multiple OUTPUT FROM displays are used, only BACK-UP the main GPS display must ANTENNA be set to master Display INSTRUMENTS Mode and all other displays must be set to be slaves; OPTION see Setup Mode, NAVTEX View, Options Page. NMEA COMPASS GPS NMEA 0183 NMEA 0183 NAV6APLUS RECEIVER or NAVTEX sensor PASSIVE NMEA 0183 NMEA 0183 RS485 ICS NAV6HUB ICS RS485 RS485 RS232 NAV6 DISPLAY NAV 6 Print er NAV6 DISPLAY NAV6 PRINTER Page 18

23 The NAV6hub The NAV6hub can be used to share NAVTEX messages between several displays. The NAV6hub also allows a single source of NMEA data to be shared between several NAV6plus displays. The NAV6hub provides two RS485 ports (Port1 consisting of the DISPLAY1 & SENSOR1 connectors and Port2 consisting of the DISPLAY2 & SENSOR2 connectors). Each port can be used to connect to two NAV6 units (any combination of display, sensor or other NAV6hub). The correct termination for RS485 is built into each NAV6 sensor & display, thus the installer only has to set a few links on the NAV6hub. Each NAV6 sensor & display should be wired directly back to a NAV6hub using NAV6 sensor and display cable extensions if required (see the options list at the end of this User Guide). All NAV6 unit connections must be made at a NAV6hub All connections to the NAV6hub and to any NAV6 product should be made with cable supplied or specified by McMurdo. The cable screen drain wire must always be connected as indicated The NAV6hub is the basic interconnect product. If more than one source of NMEA data is present on your vessel, then you may wish to add the NMEA Data Combiner module which fits inside the NAV6hub. The NAV6hub plus NMEA Data Combiner In addition to the standard NAV6hub features, the NAV6hub plus NMEA Data Combiner can be used to share up to four sources of NMEA data between several NAV6plus displays. This combined NMEA data stream is also available to other external systems. Part Numbers: NAV6hub NAV6hub With Data Combiner Page 19

24 Mechanical Installation of the NAV6hub Installation of the NAV6hub is straightforward and can be carried out with just a drill and screwdriver. Select the best position for the NAV6hub, this should be a dry location and at least 0.5 metre from any receiving/transmitting equipment or flux gate compass. Ensure that there is sufficient room to route the various cables into the NAV6hub. Remove the cover from the NAV6hub Position the NAV6hub on a vertical, flat bulkhead or other suitable surface, allowing the cables to exit out of the slot at the base of the unit Mark through the centre two fixing holes Drill two 2.5 mm holes into your bulkhead Attach the NAV6hub with the screws provided Complete the wiring following the instructions in this user guide Use the cable ties to restrain the wiring from any vibration that might weaken it over a prolonged period The connecting cables should be restrained from movement by securing them to the bulkhead or to adjacent woodwork The cover should be replaced when the wiring is complete, the configuration established & the installation tested Installation of Displays & Sensors The NAV6 displays and sensors should be located following the guidelines in the previous section. Cable runs should be kept away from sensitive equipment, extreme heat, standing water and solvents. It may be necessary to purchase cable extensions to complete the runs back to the NAV6hub. Electrical Installation of the NAV6hub It does not matter which unit is connected to which RS485 port on the NAV6hub, but 2 connectors are pre-selected as display ports and have all 12 connections marked up on the terminal blocks. One is marked MASTER and it is recommended that this be used to connect to the master display. The other two ports are sensor ports and only have 5 connections on the terminal block. If more than 2 displays are to be connected then one of the sensor ports can be used to connect to the power & RS485 connections of a third display. See later sections for further details. Decide which is to be the master display unit connect this to display 1 on the NAV6hub. Only the master display can be used to control the optional NAV6 printer or to provide information to a PC The master display unit must be set to master on its NAVTEX Setup page menu; all other displays must be set to slave. Refer to the NAV6 range User Guide for further details of system setup options. Page 20

25 Inserting Wire into a Terminal Block 1 push a small flat bladed screw driver into the upper slot on the screw terminal until the terminal jaws open 2 insert the wire 3 remove the screwdriver Connecting Displays to the NAV6hub The first 2 displays should be connected to DISPLAY1 and DISPLAY2 following the printed colour codes on the NAV6hub pcb. Connect all of the wires except the BLACK paired with GREEN, which is not used. NAV6hub DISPLAY Connector NAV6 Display Cable Twisted Pair Display Cable Core Colour Signal Description RED RED paired with BLACK RED 12 V OUT BLACK BLACK 0 V OUT BROWN BROWN paired with BROWN SERIAL A BLACK BLACK BLACK SERIAL B GREEN GREEN (BLACK pair not GREEN PROG used) BLACK (NOT USED) (NOT USED) BLUE BLUE paired with BLACK BLUE NMEA IN + BLACK BLACK NMEA IN - YELLOW YELLOW paired with YELLOW (NOT USED) BLACK BLACK BLACK (NOT USED) WHITE WHITE paired with BLACK WHITE RS485_B BLACK BLACK RS485_A SCREEN Screen SILVER Nominally 0 V Page 21

26 The diagram shows a display connected to the DISPLAY1 (MASTER) connector. Connecting a Third Display to the NAV6hub A third display can be connected to sensor 2 if required. When a display is connected to a SENSOR connector, the connections should be as shown in the following table: NAV6hub SENSOR Connector NAV6 Display Cable Twisted Pair Display Cable Core Colour Signal Description YELLOW RED paired with BLACK RED 12 V OUT BLACK BLACK 0 V OUT WHITE WHITE paired with BLACK WHITE RS485_B BLACK BLACK RS485_A SCREEN Screen SILVER Nominally 0 V Page 22

27 Displays connected to the display 1 and display 2 ports automatically have NMEA fed to them. A display connected to sensor 1 or sensor 2 ports does not, and the following additional connections need to be made : NAV6hub NMEA OUT Connector Display Cable Twisted Pair Core Colour NAV6 Display Signal Description -VE BLUE twisted with BLACK BLUE NMEA IN (A) +VE BLACK NMEA IN (B) Connecting Sensors to the NAV6hub The first 2 sensors should be connected to SENSOR1 and SENSOR2 respectively, following the printed colour codes on the NAV6hub pcb. NAV6hub SENSOR Connector YELLOW BLACK NAV6 Sensor Cable Twisted Pair YELLOW paired with BLACK Sensor Cable Core Colour YELLOW (black stripe) BLACK (yellow stripe) Signal Description 12 V OUT 0 V OUT WHITE WHITE paired with BLACK WHITE stripe) (black RS485_B BLACK BLACK stripe) (white RS485_A SCREEN Screen SILVER Nominally 0 V Page 23

28 The diagram shows a sensor connected to the SENSOR1 connector. Page 24

29 Connecting to Another NAV6hub A second NAV6hub can be connected by using a sensor extension cable as follows : NAV6hub SENSOR Connector YELLOW BLACK NAV6 Sensor Extension Cable Twisted Pair YELLOW paired with BLACK Sensor Cable Core Colour YELLOW (black stripe) BLACK (yellow stripe) Signal Description Do not connect Do not connect WHITE WHITE paired with BLACK WHITE stripe) (black RS485_B BLACK BLACK stripe) (white RS485_A SCREEN Screen SILVER Nominally 0V Note that the connections are identical at both ends of the cable. The second NAV6hub should only have slave displays connected to it There should always be only one master display in the system Use a separate switched & fused power feed from the vessel s 12V supply to provide power to the second NAV6hub Connecting to a Power Supply Protection Devices & Wiring - Power Requirements It is necessary to calculate the total power consumption of the NAV6 system in order to specify the protection devices and power feed cable. The internal power requirement for the NAV6hub is approx 20 ma To calculate the total power consumption for your system and hence the requirement for the external fuse/cct breaker and the loading on your power supply: Each sensor requires 70 ma Each display requires 300 ma Don t forget to include the consumption of the printer, if fitted Page 25

30 Unit Current consumption /ma Number fitted NAV6hub NMEA Data 60 Combiner Display 300 Sensor 70 Printer 200 TOTAL Total current consumption /ma Fuse / circuit breaker requirement An appropriately rated fuse and/or circuit breaker should be used to protect the NAV6 system. The rating should be 1.5 times the total current required by the system. Power Supply Wiring The main 12 V feed wiring (+12 V and 0 V connections to the NAV6hub) should be rated appropriately. The rating should be at least twice the total current required by the system. The installer should source appropriate marine grade cable. Note that the fuse / circuit breaker rating should always be lower than the cable rating so that the cable is adequately protected. The NAV6hub should be powered from a nominal 12 Vdc switched supply, capable of providing the total current as calculated above. To allow the unit to be isolated for service, a circuit breaker (or a fuse and switch) should switch the power supply to the NAV6hub. The connection to the boat s power supply should be made with a suitably rated cable. Carefully check all connections before applying power. Note that vessels that require isolation may need to install a DC to DC converter if in doubt ask your dealer. 24 V vessels should install a 24 V / 12 V DC to DC converter. Page 26

31 Configuring the NAV6hub The NAV6hub contains 5 link groups which must be set correctly for reliable operation of the NAV6hub (the NAV6hub may work with different link settings to those indicated, but it is strongly recommended that the published settings are followed). Link group Name Function Product NAV6hub defaults LK1 PORT1 COMMS Controls termination of Port1 RS485 LK2 PORT2 Controls termination COMMS of Port2 RS485 LK3 SERIAL Sets Printer or PC Serial operation LK4 NMEA Enables use of the NMEA Data Combiner LK5 PROG Allows programming of master display parked parked A A Not fitted Product NAV6hub plus NMEA Combiner defaults parked parked A B Not fitted LK1 & LK2: COMMS Settings LK1 & LK2 allow different combinations of displays and sensors to be connected to the two ports. These links apply the correct termination resistors for different combinations of displays and sensors. The links should be set as follows : Configuration Connector LK1 links LK2 links Example Configuration 1 Sensor Sensor 1 LK1A no fit LK2A fit Master Display Display 1 LK1B no fit LK2B fit - - LK1C no fit LK2C fit - - Example Configuration 2 Sensor Sensor 1 LK1A no fit LK2A fit Master Display Display 1 LK1B no fit LK2B no fit Display Display 2 LK1C no fit LK2C fit - - Page 27

32 Example Configuration 3 Sensor Sensor 1 LK1A fit LK2A no fit - - LK1B fit LK2B no fit Master Display Display 2 LK1C fit LK2C no fit Display Sensor 2 Example Configuration 4 Sensor Sensor 1 LK1A no fit LK2A no fit Master Display Display 1 LK1B no fit LK2B no fit Display Display 2 LK1C no fit LK2C no fit Display Sensor 2 Example: Battery ICS SLAVE ICS NAV6HUB ICS MASTER SLAVE (Configuration 4) Page 28

33 LK3: SERIAL Settings LK3 Selection A B LK4: NMEA Settings LK4 Selection A B LK5: PROG Settings LK5 Selection Fit No fit Selects RS232 communications for PC Interface Selects RS232 communications for ICS NAV6 Printer Interface Single NMEA input on NMEA.1 connections Enables NMEA Data Combiner operation For programming master ICS NAV6 display only Normal operation of master ICS NAV6 display The PROG link should only be fitted whilst the display connected to DISPLAY1 connector is being reprogrammed with a new station database, a new language option or new firmware. This link should NOT normally be fitted. Connecting a Single Source of NMEA Data Important: If there is only one source of NMEA data, you must use the NMEA.1 input connector and set LK4 to position A The NAV6hub is conveniently configured so that in an installation with multiple displays, the NMEA data is routed to two displays plus an NMEA output port, and only puts a single electrical load on the NMEA source. The NMEA output is a buffered version of the NMEA input. To use the NMEA.1 input as the single NMEA input, LK4 must be in the A position. Connecting to More than one Source of NMEA Data It is not uncommon to have more than one source of NMEA data. For instance a GPS may be transmitting position-related data on one NMEA source and an instrument system may be outputting the boat s instrument data on another NMEA source. NMEA outputs cannot be connected together and a suitable NMEA combiner must be purchased. McMurdo recommend that you purchase the NAV6hub NMEA Data Combiner option (050-07) for installation within the NAV6hub (919-00). The version of the NAV6hub has the NMEA Data Combiner ready fitted. Page 29

34 There are four pairs of NMEA input connections on the NAV6hub pcb. These are prioritised with NMEA.1 the highest priority. These means that if an NMEA sentence (say RMC) is presented on NMEA.1 & NMEA.2 connectors then the RMC sentence from NMEA.1 will be used & the sentence from NMEA.2 will be discarded. NAV6hub Priority Suggested Use NMEA IN Connectors NMEA.1 Highest Instrument system NMEA.2 Second Master GPS NMEA.3 Third Back-up GPS NMEA.4 Lowest Plotter, Radar etc To use the NMEA Data Combiner, LK4 must be in the B position. Connecting to a Personal Computer The Nav6 display can be connected to a PC (see the User Guide for more information). The Nav6hub preserves this capability but only allows the master display (connected to the display 1 port) to connect to the PC. If you require to connect to a PC we recommend that you purchase the PC Interface Cable (order number ). Connections to a PC are as follows : Nav6hub SERIAL/PRINTER Connector PC Connections 9 way D-type Core Colour Signal Description 12V OUT - - No connection 0V OUT Pin 5 BLACK 0V output SERIAL A Pin 3 BROWN TX from Nav6 SERIAL B Pin 2 WHITE RX to Nav6 SCREEN Screen Silver Nominally 0V To use the PC Interface, LK3 must be in the A position. Connecting to a Serial Printer The NAV6 display can be connected to a serial printer (see the User Guide for more information). The NAV6hub preserves this capability but only allows the master display (connected to the DISPLAY 1 port) to connect to the printer. This means that the printer function is controlled only from the master display. Page 30

35 If you require a printer then we recommend that you purchase the NAV6 Printer (order number ). The NAV6hub provides power as well as communication to this printer. Connections to a NAV6 Printer are as follows : NAV6hub SERIAL/PRINTER Connector NAV6 Printer Cable Twisted Pair Core Colour Signal Description 12V OUT RED twisted with BLACK RED 12V output 0V OUT BLACK 0V output SERIAL A BROWN twisted with WHITE BROWN TX from Nav6 SERIAL B WHITE 0V SCREEN Screen Silver Nominally 0V To use the NAV6 Printer, LK3 must be in the B position. Page 31

36 7. TESTING THE NAV6 AFTER INSTALLATION Carefully check all connections before applying power Switch on the power supply by closing the 1.5 A circuit breaker or power panel switch Check that the red LED illuminates for approximately 8 seconds and then goes out and the start-up page appears on the NAV6 display. The start-up progress bar at the bottom of the page will disappear when the system is ready to use. Press any key to show the next screen Sensor Check that both the 490 and the 518 icon appear on the status line at the top of the NAVTEX display. If the correct icons do not appear, refer to the Maintenance and Trouble Shooting section. NMEA input When the display is receiving GPS data the GPS icon will appear on the status line at the top of the NAVTEX display. If the icon does not appear, ensure that the NMEA source is operating and check the NMEA data connections; you may have to swap the NMEA DATA A and DATA B wires. Testing the NAV6hub after Installation Switch on the NAV6hub by applying 12 V to its power connections The red POWER LED will illuminate The various NAV6 displays and sensors will complete their power-up sequence and then start communicating to each other within a few seconds. The two red LEDs marked PORT1 & PORT2 will start to flash The NAV6hub is now operational Test the interfaces between the NAV6hub and the various display and sensors as follows : Check that all of the NAV6 displays are powered up Check that none of the NAV6 displays shows ERR on the status bar at the top of the LCD If a GPS is fitted then check that the GPS icon is displayed on the status bar at the top of the LCD on all displays If a GPS is not fitted, but there is another source of NMEA data, then check that the Navigate pages display the correct data on all NAV6 displays. (If latitude & longitude are not available on the NMEA bus then the GPS icon will not be present) Page 32

37 8. MAINTENANCE AND TROUBLE SHOOTING Cleaning The NAV6 NAVTEX System may be cleaned when necessary by wiping with a cloth dampened with fresh water. Do not use solvents. Faultfinding NAV6 display Fault Possible cause LCD blank, RED LED Green wire connected to 12 V On Disconnect green wire it should not be LCD blank, RED LED off RED LED flashing with a period of 2 seconds. Display not operating. RED LED flashing with a period of 15 seconds. Display not operating. No NAVTEX messages received (in view) SIG on status line (signal fault) connected other than for programming No power Check that 12 V is connected to RED wire and 0 V to its BLACK pair Low voltage There is insufficient voltage supplying the display Sleep Mode Press any key to activate the display No NAVTEX channel selected; see No 518 or 490 icon on the status line below. Check you are in range of a NAVTEX station. Check message age limit setting, decreases age limit to bring older messages into view. Check for SIG or ERR on status line; see below. No error icon, refer to Appendix II. If this icon appears for short periods don t worry it s caused by one or more NAVTEX stations transmitting carrier but no modulation, or by local interference. If this icon persists then you may have a receiver error or interference from nearby equipment. Check for possible causes. Identify the local source of interference by turning off items of equipment (e.g. battery charger) until the SIG icon is cleared No 518 or 490 icon on the status line (no channel selected) Check that one or both NAVTEX channels are selected, if it s not possible to select a channel the sensor is unavailable, refer to ERR below. Page 33

38 Fault ERR on status line (communications error) No GPS indicator on status line Possible cause No power to Sensor No communications to Sensor Check connections to sensor. Check for 12 V between YELLOW wire and its BLACK pair Display Mode set to Slave Always set the Display Mode to Master in single display systems. Two or more master displays connected to a sensor Set the Display Mode on one display to master and set all other displays to slave No GPS data on NMEA input. Check the NMEA data connections. Check that the GPS unit is switched on. Check that the GPS unit is set to output compatible NMEA sentences. NAV6hub faultfinding The NAV6hub is provided with 3 status LEDs. The one marked POWER on the pcb should always be lit when power is applied to the NAV6hub. The other 2 LEDs indicate the status of communications on the 2 RS485 ports. Each LED is only ON when a unit (display or sensor) is talking on the other port. The only units that talk are sensors and the master display. The units talk 4 times per second for a very short period each time. Thus the LEDs appear to flash ON for a short time. LED Status Indicates Explanation POWER LED off No 12 V to NAV6hub Fault with power supply Fuse tripped POWER LED on 12 V connected to NORMAL OPERATION NAV6hub PORT1 LED flashing Communication received on Port1 NORMAL OPERATION There is a sensor OR the master PORT2 LED flashing Neither LED is flashing Communication received on Port2 No communication received on either Port1 or Port2 display connected to Port2 NORMAL OPERATION There is a sensor OR the master display connected to Port1 Check that a display has been set to master Check that the master display has been set to 490, 518 or Both receive frequencies Check LK1 & LK2 link settings are correct Page 34

39 One or both LEDs continuously on Fault condition Contact the McMurdo Electronics Technical Helpline for assistance Fault ERR on the top line of all displays NAVTEX messages appear to have blocks of 4 or 5 characters missing ERR on one display but not on all Possible Causes No sensor connected All displays have been set to slave one sensor must be set to master More than one display has been set to master RS485_A & RS485_B have been reversed The termination has not been set correctly see section above More than one display has been set to master Connections to that display are incorrect User Serviceable Parts There are no user-serviceable parts in the equipment. If a fault develops, the unit must be returned to a dealer, service centre or direct to McMurdo. Software Upgrade The NAV6 has FLASH memory based software. This allows it to be upgraded when new software releases are developed. Refer to our website for information on new releases. Input Fuse The NAV6 has a built-in re-settable fuse on its 12 V input. This fuse will trip if the unit draws excessive current. Power must be disconnected from the unit for 10 seconds in order for the fuse to reset. Sensor Output Fuse The NAV6 has a built-in re-settable fuse on its sensor output power connector. This fuse will trip if the sensor unit draws excessive current. The sensor unit power must be disconnected for 10 seconds in order for the fuse to reset. Page 35

40 COG GMDSS IMO NMEA RS485 RS232 SAR SOG SOLAS TTG XTE 9. GLOSSARY Course Over Ground Global Maritime Distress and Safety System International Maritime Organisation National Marine Electronics Association Serial data communication interface Serial data communication interface Search and Rescue Speed Over Ground Safety of Life at Sea Time To Go Cross Track Error 10. OPTIONS The following NAV6 ancillary parts can be purchased: McMurdo Option Part No U-bracket, on surface 3 way mounting kit Display unit suncover NAV6hub for connecting multi-repeater systems 1 x NMEA 0183 input NAV6hub for connecting multi-repeater systems 4 x NMEA 0183 input Cable deck gland Plastic Rail Mount for NAVTEX sensor - suitable for 25 mm S/S rails NAV6 paper roll printer NAV6 PC serial interface cable cm S/S sensor whip extension m NAVTEX sensor cable extension kit m NAVTEX sensor cable extension kit NAV6repeater NMEA GPS/instrument repeater display (second NAVTEX display) m repeater display cable extension kit m repeater display cable extension kit Flash Programming kit (updates NAV6plus display from a PC) NAV6Aplus passive antenna with 10 m cable NAV6Aplus passive antenna with PL socket NAV6Aplus low profle active whip antenna Page 36

41 11. SPECIFICATION NAV6plus/dual NAVTEX Sensor Simultaneous dual channel (518 khz and 490 khz) receiver 10 m attached connecting cable Waterproof to IEC Frequency Stability: +/-10 Hz RS485 serial data I/O port Data decoding in accordance with ITU-R Power Supplied by display unit Physical Height 200 mm, Width (base)110 mm, Depth (max)155 mm Operating Temperature Range: -15 to +55 C Humidity: 0 to 95% non-condensing Weight (without cable): 420 g (approx) Industry standard 1" 14 tpi threaded base Extension Whip (option): length 45 cm/ 3 / 8 " x 24 tpi thread NAV6 range Display Unit Operating Temperature Range: -15 to +55 C Humidity: 0 to 95% Weight (without cable): 445 g Display type ½VGA (480 x 320 pixels), 6" monochrome LCD with 4 grey levels and CFL backlight Controls 4 x function keys, 4 x navigation keys, with LED backlight Alarm Programmable vital message reception acoustic alarm Message Storage Sufficient non-volatile storage for more than 3 days of NAVTEX transmissions under normal operating conditions Physical Height 198 mm, width 138 mm, depth 40 mm Mounting Panel instrument mounting (standard) hole size 102 mm diameter U bracket on surface mount (optional) Connection 1 metre cable with screw terminal block Expanded system connection with ICS NAV6hub Environmental Inside/outside mounting Waterproof to IEC945 (exposed category) IEC945 (EMC) CE marked. Power requirements Voltage range 10.8 V to 15.6 V Page 37

42 Consumption (Typical) Backlight full 310 ma (3.8 W at 12 V) Backlight off 165 ma (2.0 W at 12 V) Sleep mode 115 ma (1.4 W at 12 V) NMEA Data input (NAV6plus/Aplus/repeater ) NMEA input port, meets the electrical requirements of NMEA 0183 NMEA GPS/Instrument system interface supports NMEA 0183 V2.0 or higher Input/output Interface Specification Preferred NMEA sentences: RMC, HDT, HDG, VBW, MWV, VLW, DPT, ROT, VDR, RMB and BWC Minimum recommended NMEA sentences: RMC and RMB Data output (NAV6plus/Aplus/repeater only) RS232 serial data, supports the printing of vessel Log reports and NAVTEX message text to NAV6printer or a computer system running compatible software NMEA logging Interval (NAV6plus/Aplus/repeater only) off,15, 20, 30 mins, 1, 2, 3, 4, 5, 6,12 hours. 256 log entries NMEA Repeater Display (NAV6plus/Aplus/repeater only) 9 User selectable NMEA instrument and navigation screens NAV6Aplus specifications Power Requirements 70mA at 12V (supplied by NAV6 display or NAV6hub) Antenna input 1. 50ohm, range khz 12 Vdc to feed to power an active antenna is selectable at installation 2. Hi impedance wide range, supports connection of longer than 2 m of insulated wire or whip antenna Physical Dimensions Height 180 mm, Width 122 mm, Depth 36 mm, Weight 300 g Mounting Bulkhead mounting via two self-tapping screws (supplied) Connection All connections made by 2 part screw terminal Environmental Not for outside use Unit must be mounted below decks in a suitable dry location NAV6hub Power Consumption 20 V Physical Height 180 mm, Width 122 mm, Depth 36 mm, Weight 300 g Mounting Bulkhead mounting via two self-tapping screws (supplied) Cable exits from slot in base of unit Connection All connections made by screw terminal (cable size 26 to 14 awg) Page 38

43 Connect to displays and sensors by the cable supplied with those items Connect to ancillary equipment by the cable supplied with that equipment Environmental Not for outside use Unit must be mounted below decks in a suitable dry location NAV6repeater Same as NAV6plus display unit but without NAVTEX features or NAVTEX message text output NAV6repeater can be upgraded to NAVTEX by adding an NAV6plus/Aplus NAVTEX sensor NAV6dual Display Unit Data input NMEA input port, meets the electrical requirements of NMEA 0183 Input Interface Specification Preferred NMEA sentences: RMC (UTC only) NAV6printer Power Voltage range: 10.8 V to 15.6 V Consumption (Typical) Standby 125 ma (1.5 W at 12 V) Printing 210 ma (2.5 W at 12 V) Printer Unit Operating Temperature Range: 0 to +40 C Storage Temperature Range: -20 to +55 C Humidity: 0 to 95% Mounting: Below decks Weight (without cable): 1200 g (approx.) Printer Specification Type: Thermal, 40 chars per line Character Matrix: 7 x 5 Paper Roll: 80 mm wide x 20 m long Paper Out: Audible alarm Front Panel: Four push-button switches located under paper load door Controls Power ON/OFF Paper feed Two menu setup keys Interface Parameters serial RS232 compatible, 4800 baud, 8 data bits, 1 stop bit, no parity Auto Linefeed Selectable (Default : OFF) Rear Connections 10 way plug in connector Alarms Paper Out Low battery supply 9 Vdc Mounting Shelf/bulkhead FMT-4 panel mount option Page 39

44 Features of the NAV6 range Feature NAV6dual NAV6plus NAV6Aplus NAV6repeater Dual receiver x x x Automatic station x x selection NMEA GPS x x x display NMEA instrument x x x display NMEA logging x x x Display backlight x x x x Data output x x x Antenna options x Note: NAV6dual has no PC or printer interface connection Page 40

45 12 OUTLINE DRAWINGS Page 41

46 APPENDIX I: NMEA SENTENCES SUPPORTED Data Item Taken from NMEA Sentences Time RMC GGA GLL ZDA Date RMC ZDA Lat/Long RMC GGA GLL Heading (True) *HDT *HDG VHW Heading (Magnetic) *HDG VHW Water Speed *VBW VHW Course (True) RMC VTG Course (Magnetic) RMC VTG Ground Speed RMC *VBW VTG Wind Speed *MWV #VWR #VWT Wind Angle *MWV #VWR #VWT Distance VLW Trip VLW Depth *DPT DBT Rate Of Turn *ROT Waypoint RMB BWC BWR APB Name RMB BWC BWR Lat/Long ETA RMB ZTG Range RMB BWC BWR Closing Speed RMB WCV Bearing (True) RMB BWC BWR APB Bearing (Magnetic) BWC BWR APB Cross Track Error RMB XTE APB * SOLAS required sentence # Obsolete Note that the if a data item is present in more than one sentence, then it is taken from the leftmost sentence in the table entry above. I.e. if Range is available in BWC and BWR, it will be taken from BWC. NAV6dual only supports time and date functions Page 42

47 APPENDIX II: OPTIMISING NAVTEX RECEPTION. When sailing within a published NAVTEX service area, reception coverage can extend to as much as nautical miles. If the NAVTEX signal has to cross land to any significant extent, attenuation may occur; this can reduce the reception range to as little as 50 miles. Range can increase significantly at night; it can sometimes extend to as much as 1000 miles. Some NAVTEX stations reduce transmitter power at night to avoid overlap of signals into other sea areas. Background electrical noise in a marina, the presence of high cliffs and the masts of surrounding vessels can all contribute to poorer NAVTEX reception when in harbour rather than at sea. To ensure you get the best reception possible, always mount the NAVTEX sensor in a location that is free of other electrical equipment. Take care to avoid locations that are close to wind generators, battery chargers, shore power transformers and any associated electrical power wiring. If you have any doubt regarding the suitability of a proposed sensor location, first make a temporary test installation to confirm that the reception performance meets your requirement before committing time and effect to a full sensor installation that you may later have to change. Checking the quality of NAVTEX Reception The NAV6 NAVTEX monitor page, shows live reception diagnostic information, this can be helpful when proving a system is receiving correctly and can assist in evaluating a proposed sensor site. The monitor page is accessed by selecting; SETUP MODE, NAVTEX VIEW, MONITOR PAGE. The information shown on the monitor page is totally independent of normal operation, station and message type selection filters. As soon as live NAVTEX reception is detected, received information will start to flow across the display in real time. Non-printing, transmitter-idle and phasing characters are displayed as well as actual message text. The top half of the monitor screen is dedicated to displaying 490kHz reception data, the lower half 518kHz. The current reception error rate is displayed as a percentage of errors alongside the associated bar graph. The bar graph is a visual guide to reception quality. When reception quality is good, the reported error rate will be low (<4%). Note that the bar graphs give a visual indication of the error rate and an indication of the trend (increasing or decreasing error rate). The error rate is calculated as an average over a large number of received characters. Note that once a transmission stops and the transmitter shuts down, any error rate that was previously displayed will slowly return back to 0%. Page 43

48 Evaluating a proposed sensor location A methodical approach when evaluating a proposed sensor site would be to note down the average error rate from each station. Then make a change to the proposed sensor location, take a new set of percentage error readings and consider your options. Ideally you need to receive from at least one distant station that is 100 miles or more away or you may find it impossible to get any received error count at all. As most NAVTEX stations just transmit for a maximum of ten minutes at a time in every four hours, you will have to work quickly. Alternatively, take your time and make a new set of readings after four hours has elapsed. Fine tuning the sensor installation If you want to increase the sensitivity of your system and hence the range of reception, you can try connecting the screen of the sensor interconnecting cable from the connecting block direct to a good electrical ground. This can either be a specially installed ground plate, or the keel bolts on a non-encapsulated keel. Refer to Sensor installation section for full details of recommended grounding arrangements. Take careful note of reception error rates on the NAVTEX monitor page both before and after attaching a ground connection. Note that connection to an inappropriate or electrically noisy ground point can sometimes give unpredictable results and may even reduce overall reception performance. Tip : Don t just make a new ground connection and assume that it will make things better, check that reception is better before putting your tools away. Isolating sources of on board interference Select NAV6 NAVTEX monitor page. Wait until the next scheduled transmission time of a distant station (100 miles or more away). Observe the average reception error rate (if any reception) Turn off all sources of AC power usage, battery chargers, inverters, generators and shore power Note the average reception error while receiving the distant station Turn on all sources of AC power usage, one at a time, noting any increase in reception errors Reception errors may also be caused by close proximity of D.C. powered equipment. In this case repeat the above test but include all D.C. powered instruments on board as well. Should any item be proven to have a significant negative effect on reception consult a qualified marine electrician for advice. Page 44

49 APPENDIX III: FREQUENTLY ASKED QUESTIONS How do I view the very latest NAVTEX message on my NAV6 unit? In NAVTEX mode select the sort view, change to date criteria and then select descending order. The latest and later, new message will appear at the top of the display to be replaced with the next message when it is received. Note that NAVTEX messages will always also be filtered from view according to the current active preset settings. How do I optimise NAVTEX reception? see Appendix II Why are the 'Station Names' missing from all message headers on my NAV6 unit? The text font size currently selected is medium or large, station names are only displayed when the small font is selected. All NAVTEX messages have disappeared from view on my NAV6 display - why? Also If I toggle through all the screens with the 'Mode Soft Key' only the Navigate and the Setup screen show, why no NAVTEX screen? The antenna frequency setting is currently set to 'none' Go to the NAVTEX options set up page and select a receive frequency If you have an NAV6 select either 490 khz or 518 khz If you have an NAV6dual or NAV6plus or NAVAplus you can select either 490 khz or 518 khz or 'both' to receiver both frequencies at the same time Is there a 24V version of the NAV6 range available? No, but an isolated 24 V to 12 V converter is available from your local stockist. Contact your nearest distributor for your local stockist. Contact details for our worldwide distributor network can be found in the distributor section on the site. My 12V boat has a metal hull & requires all equipment to be fully isolated from ground? An isolated 12 V to 12 V converter is available from your local stockist. Contact your nearest distributor for your local stockist. Contact details for our worldwide distributor network can be found in the distributor section on the site. How do I connect my Raymarine instrument system to my NAV6plus? The Raymarine 'SeaTalk to NMEA bridge' unit is available from Raymarine dealers. This will convert the instrument data present on the SeaTalk communications bus into the standard NMEA 0183 format that the NAV6plus can understand. Page 45

50 I am experiencing various problems when interfacing the NAV6 NAVTEX receiver to Raymarine equipment. Certain Raymarine equipment offers the facility to bridge the instrument data transmitted on by SeaTalk across to a standard NMEA 0183 output. Unfortunately this bridging facility is not comprehensive in all cases, for instance an RC520 will display wind information if it is available on the SeaTalk interface, but does not bridge the wind data to its NMEA output interface. We recommend that you carefully read the user manual for any Raymarine products that you own before connecting a bridged NMEA output to the NAV6's NMEA input. You may find that the data that you wish to display on the NAV6 is not outputted by the Raymarine equipment (as in the example above). In these cases we recommend that you purchase a separate Raymarine SeaTalk to NMEA bridge product and use this to bridge SeaTalk instrument data to the NAV6's NMEA input. I am experiencing problems with my Raymarine Z290 SeaTalk to NMEA Bridge When attempting to interface the NAV6plus to Raymarine SeaTalk systems using a Raymarine Z290 SeaTalk to NMEA bridge some users have experience difficulties with the data contained within the RMB (recommended minimum navigation) sentence. Ensure that you have the latest software from Raymarine in your Z290. Z290 Versions 6 and earlier (any Z290 unit purchased before May 2002) do not transmit the RMB sentence correctly which may result in one or more of the following symptoms on the NAV6plus: 1. No cross track error (XTE) 2. Incorrect closing speed 3. Incorrect range 4. Incorrect bearing Contact your Raymarine dealer to obtain an update for your Z290. Note that the SeaTalk bridge does not convert all SeaTalk data elements to the NMEA equivalent; consult the user manual from your SeaTalk bridge which will indicate which data items you will be able to view on your NAV6plus. Page 46

51 APPENDIX IV: SENSOR CABLING The NAVTEX sensor cable consists of two twisted pairs of wire cores, within an overall foil screen and a screen-drain wire. Sensor cable type: White outer cover, 7 mm overall diameter. White sensor cables can be extended to a maximum total length Sensor to display of 50 m. WHITE sensor cable Twisted Pair Core Colour Signal description Display connection YELLOW twisted with BLACK YELLOW with BLACK band BLACK with YELLOW band POWER from display POWER GND from display YELLOW of YELLOW pair BLACK of YELLOW pair WHITE twisted with BLACK WHITE with BLACK band BLACK with WHITE band DATA A from display DATA B from display WHITE of WHITE pair BLACK of WHITE pair Screen Silver Screen (nominally 0V) Silver Sensor cable type: Black outer cover, 9 mm overall diameter. BLACK sensor cable Twisted Pair Core marking Signal description Display connection WHITE of pair ONE twisted with BLACK ONE WHITE with YELLOW sleeve POWER from display YELLOW of YELLOW pair BLACK POWER GND from display BLACK of YELLOW pair WHITE of pair TWO twisted with BLACK TWO WHITE BLACK DATA A from display DATA B from display WHITE of WHITE pair BLACK of WHITE pair Screen Silver Screen (nominally 0V) Silver Older sensor types use a core pair number to colour scheme with a yellow sleeve to indicate power pair. The pair number is printed in black, repeating every 7cm along the white cores. Black sensor cables should not normally be extended beyond the standard length supplied. Contact McMurdo technical support for further information if you intend to extent black cables by more than a couple of meters. In the event of the yellow sleeve becoming detached from the number ONE white core, you may find it difficult to identify pair ONE from pair TWO. In this case strip back the outer cover until a number comes into view. Page 47

52 Sensor cable continuity check. Using a Digital Test Meter with a 200 kohms range setting it is possible to check the continuity of the disconnected sensor cable. This can help when fault finding a possible sensor connection problem. Sensor cable type: WHITE Place the Negative meter probe on screen / SILVER and leave it in place for the following tests: Place the Positive meter probe on YELLOW with BLACK band A correct reading would be greater than 1Meg ohm Move Positive meter probe to BLACK with YELLOW band. A correct reading would be less than 10 ohm Move the Positive meter probe to WHITE with BLACK band A correct reading would be approximately 8000 to 9000 ohm Move the Positive meter probe to BLACK with WHITE band A correct reading would be approximately 8000 to 9000 ohm Sensor cable type: BLACK Place the Negative meter probe on screen / SILVER and leave it in place for the following tests: Place the Positive meter probe on YELLOW (WHITE of pair ONE twisted with BLACK). A correct reading would be greater than 1Meg ohm Move Positive meter probe to BLACK (of pair ONE). A correct reading would be less than 10 ohm Move the Positive meter probe to WHITE of pair TWO (twisted with BLACK). A correct reading would be approximately to ohm Move the Positive meter probe to BLACK of pair TWO. A correct reading would be approximately to ohm Sensor current consumption check All sensor types: Set Digital Test Meter to DC 200mA range Power up the NAV6 Lift the yellow (or YELLOW with BLACK band), Note, ERR will display if sensor was previously working Insert Test Meter in line, ( ERR will clear), read DC ma on test meter. A correct reading would be between 60 and 80 ma Sensor voltage check All sensor types: Set Digital Test Meter to 20 Volt DC range Power up the NAV6 Measure voltage across the YELLOW and BLACK pair. A measurement in the range 10.2 to 15 volts is correct Page 48

53 13 DECLARATION OF CONFORMITY Page 49

54 Page 50

55 14 PRODUCT WARRANTY McMurdo is a brand operated by Signature Industries Limited. Subject to the provisions set out below McMurdo warrants that this product will be free of defects in materials and workmanship for a period of 24 months from the date of purchase. McMurdo will not be liable to the buyer under the above warranty:- for any defect arising from fair wear and tear, wilful damage, negligence, abnormal working conditions, failure to follow McMurdo's instructions (whether oral or in writing) including a failure to install properly and/or to use batteries recommended and/or supplied by McMurdo, misuse or alterations or repair of the product by persons other than McMurdo or an Approved Service Agent; for parts, materials or equipment not manufactured by McMurdo in respect of which the buyer shall only be entitled to the benefit of any warranty or guarantee given by the manufacturer to McMurdo; for the battery storage life which is specifically excluded from this warranty; if the total price for the product has not been paid. THE LIMITED WARRANTY STATED ABOVE IS EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. McMurdo will not be liable for indirect, special, incidental or consequential damages of any kind sustained from any cause. In no event shall McMurdo be liable for any breach of warranty or other claim in an amount exceeding the purchase price of the EPIRB. This warranty does not affect any statutory rights of the consumer. In order to be valid, claims must be made under the above warranty in writing as soon as practicable after discovery of the defect or failure and within the warranty period referred to above. Proof of purchase will be required. The claim should be sent together with the product in question to the address set out below or to an Approved Service Agent. Following a valid warranty claim McMurdo shall be entitled to repair or replace the product (or part) in question free of charge, or at McMurdo's sole discretion to refund to the buyer the price of the product (or a proportional part of the price). McMurdo shall not be liable to a buyer who is not a consumer for any other loss or damage (whether indirect, special or consequential loss of profit or otherwise) costs, expenses or other claims for compensation which arise out of or in connection with this product. In the case of a consumer McMurdo shall only be liable where other loss or damage is foreseeable. Nothing shall limit McMurdo's liability for death or personal injury caused by its negligence. This warranty is to be interpreted under English law. All enquiries relating to this warranty or Approved Service Agents should be sent to: McMurdo, Silver Point, Airport Service Road, Portsmouth, Hampshire, PO3 5PB UK Telephone: Int + 44 (0) Fax: Int + 44 (0) Web: customerservice@mcmurdo.co.uk Page 51

56 15 END OF LIFE STATEMENT Disposal The Waste Electrical and Electronic Equipment (WEEE) Directive aims to minimise any adverse impact of electronic equipment on the environment, both during the product lifetime and when it becomes waste. Within the European Union this legislation is mandated by Directive 2002/96/EC, and there is similar legislation in most other continents. The directive applies to all electronic products such as IT, household appliances, portable electronics etc., and imposes requirements to collect, treat, recover and recycle each product at its end of life. Electronic end-user products must also carry a WEEE label (as below) and recovery and recycling information has to be provided to the recycler. This product may contain lead and brominated flame retardants (BFRs), both in the housing material and circuit boards. In keeping with the directive, McMurdo strongly recommends that this product be disposed of in a sensible and considerate manner. For example, do not simply discard the product in the domestic waste. Instead take it to a civil recycling facility, or contact McMurdo for advice. Page 52