* O M E 5 6 4 9 0 B 1 0 ** O M E 5 6 4 9 0 B 1 0 *
IMPORTANT NOTICE
• No part of this manual may be copied or reproduced without written permission.
• If this manual is lost or worn, contact your dealer about replacement.
• The contents of this manual and equipment specifications are subject to change without
notice.
• The example screens (or illustrations) shown in this manual may not match the screens
you see on your display. The screen you see depends on your system configuration and
equipment settings.
• This manual is intended for use by native speakers of English.
• FURUNO will assume no responsibility for the damage caused by improper use or
modification of the equipment or claims of loss of profit by a third party.
• Please carefully read and follow the operation and maintenance procedures set forth in
this manual.
• Store this manual in a convenient place for further reference.
i
SAFETY INSTRUCTIONS
Safety information for the Operator
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
Do not disassemble or modify the
equipment.
Fire, electrical shock or serious injury can
result.
Immediately turn off the power at the
switchboard if the equipment is emitting
smoke or fire.
Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.
CAUTION
A warning label is attached to the equipment. Do not remove the label. If the
label is missing or damaged, contact
a FURUNO agent or dealer about
replacement.
WARNING
To avoid electrical shock, do not
remove cover. No user-serviceable
parts inside.
A heater can melt the equipment's power
cord, which can cause fire or electrical
shock.
Use the proper fuse.
Fuse rating is shown on the equipment.
Use of a wrong fuse can result in damage
to the equipment.
ii
Safety information for the Installer
WARNINGWARNING
Do not open the equipment
unless totally familiar with
electrical circuits and
service manual.
ELECTRICAL
SHOCK
HAZARD
Turn off the power at the mains switchboard before beginning the installation.
Fire, electrical shock or serious injury can
result if the power is left on or is applied
while the equipment is being installed.
Only qualified personnel
should work inside the
equipment.
CAUTIONCAUTION
Observe the following compass safe
distances to prevent deviation of a
magnetic compass.
Steering
0.95 m
0.75 m
Display unit
Receiver unit NX-7001
NX-700A
NX-700B
Attach securely protective
earth to the ship's body.
The protective earth is required
to the power supply to prevent
electrical shock.
Standard
1.45 m
0.30 m0.30 m
1.15 m
iii
v
FORWORD
Congratul ations on your choice of the FURU NO NX-700A/B NAVTEX Receiver.
We are conf ident that y ou will enjoy many years of operation w ith this fine piec e
of equipment.
For over 50 y ears , Furuno Electr ic Company has enjoyed an enviable reputation
for quali ty and reliabil ity throughout the world. Our extens ive global network of
agents an d dealers furthers t his dedicati on to excell enc e.
The NX - 700A /B is just one of the many Furuno developments in t he field of
marine radi o com m unication.
NX-700A: Display unit w/printer
NX-700B: Display unit w/o printer
This NX-700A/B provides cost - effective price, high sens itivity and s imple
operati on in one compact and light-weight unit. In addition to its fundam ental
function of receiving NAVTEX broadcasts, this unit can also function as nav data
display when connected to navigation equipment.
This uni t is designed and const r uc ted to ensure the user many y ear s of
trouble-f ree operation. To obtain full performance from the equipment, however,
you should c ar efully read and follow the recom m ended procedures for
inst allation, operat ion and maintenanc e. No m achine can perform its intended
functions unless it is installed and maintained properly.
Thank you for considering and purchasing F URUNO equipment .
i
v
Features
NAVTEX (Navigational Telex) is a world wide coastal telex broadcasting system.
Coastal NAVTEX broadcasting stations with specific ID’s transmit Navigational
warnings. Meteorological warnings, Search and Rescue (SAR) information and
other navigational information for NAVTEX receiver-equipped vessels sailing in
coastal waters.
The FURUNO NX-700 NAVTEX receiver receives NAVTEX messages and
automatically displays them together with station ID and message category
information.
If ship’s position data is fed from navigation equipment, the NX-700
automatically decides in which NAVAREA the vessel is navigating, and selects
stations. (NAVAREAs are geographical zones defined by the international
Maritime Organization.)
-Meets the following standards and regulations
MSC.148 (77) IMO A.694 (17)
IEC 61097-6 Ed.2 CDV (2005-02)
IEC 60945 Ed. 3 and 4
IEC 61162-1 and 2
EN 300 065V 1.1.3
EN 301 011V 1.1.1 (1998-09)
ITU-R M 540-2
ITU-R M 625-3
-Receives 518 kHz and another (490 or 4209.5 kHz) at the same time
-5” LCD display
-Prints out the message selected
-Bright 76 x 100 mm, monochrome LCD, 240 x 320 dots with adjustable contrast
and brilliance
-Low power consumption
-Displays the NAV data (date, own ship’s position, speed and course) or distance
(distance between own ship’s position and information mentioned in the
message) at the bottom of screen
000-041-176 1 30 m, w/connector
000-041-177 1 40 m, w/connector
000-041-178 1 50 m, w/connector
005-948-250 1 10 m
005-948-260 1 20 m
005-948-270 1 30 m
005-948-280 1 40 m
005-948-290 1 50 m
000-563-048 1 30 m
000-126-000 1 40 m
000-126-001 1 50 m
000-152-698 1 3 m
000-152-699 1 5 m
000-152-700 1 10 m
000-152-701 1 15 m
For antenna unit NX-7H
1
ix
SYSTEM CONFIGURATIONS
DISPLAY UNIT
NX-700B
Rectifier
PR-240-CE
Power supply
100-115/
200-230 V A C.
1 , 50/60 Hz
or
Max. 15 m
RECEIVER UNIT
NX-7001
Power supply
12-24 VDC
DISPLAY UNIT
NX-700A
ANTENNA UNIT
NX-7H
Max. 100 m
External Alarm
Printer (NX-700B only)
INS
(Integrated Navigation System)
or
Navigator
: Standard
: Option
: User supply
Environmental Category
Antenna unit To be installed in an exposed area
Display unit
Receiver unit
To be installed in a protected area
x
1. PRINCIPLE OF NAVTEX SYSTEM
1.1 How NAVTEX Works
NAVTEX is an acronym meaning Navigational Telex, and as its name shows, it is
a kind of narrow band radio teletype system for sending (by frequency shift
keying) text messages expressed in a 7-unit code. The difference is that a
NAVTEX transmitter transmits nine control characters (header code) ahead of
the main message, so that the receiver can identify the station, message type
and serial number automatically.
1.2 NAVTEX System Operation
For navigation purposes, the world is divided into 16 areas as shown in the
figure below. Each Navtex station has an identification code, from “A” to “Z”. The
frequency assigned to Navtex are 518 kHz and another (490 or 4209.5 kHz),
and many stations exist in the same service coverage.
If the stations were to transmit without any rule, the system would collapse due
to mutual interference. To avoid this problem, the following rules apply.
• The transmission schedule is determined so that two or more stations having
a common service area may not overlap in time.
• Each station transmits with minimum required power to cover its service area
(200 to 400 nautical miles nominal).
1-1
1. PRINCIPLE OF NAVTEX SYSTEM
1.3 Message Format
For automatic identification of messages, each message starts with nine control
characters, called “Header codes”.
The first five characters are always “ZCZC_“ and common to all messages. This
part is used for message synchronization. The latter four characters are
designed as B1, B2, B3 and B4 indicate origin, category and serial number of
the message.
Character B1 is the identification letter of the Navtex station “A” thru “Z”.
Character B2 indicates the type of message. “A” thru “Z”, as listed below.
Character B3 and B4 indicate the serial number of the message. The serial
numbers are counted up from “01” to “99”, and starts from “01” again. Number
“00” is specially reserved for important emergency messages.
The end of each message is indicated by “NNNN” (four successive N’s).
General message format is summarized below.
Header code
ZCZC B1 B2 B3 B4 main message NNNN
Start code
Main message
Termination code
(sync)
Serial number
"00": Emergency message
"01" - "99": Normal message
Type of message
"A" - "Z"
(See the list below.)
Station ID
"A" - "Z"
[Type of message (category)]
A: Navigational warning I: Spare
B: Meteorological warning J: SATNAV message
C: Ice report K:
D:
Search and rescue information/pirate
attack warnings
L:
Other electronic navigational aid
system message
Navigational warning (addition to
“A”)
E: Meteorological forecast
F: Pilot message
G: AIS
H: LORAN message Z: QRU (no message on hand)
1-2
V to Y
Special services allocation by the
NAVTEX Co-ordinating Panel
1.4 NAVTEX Station Map
1. PRINCIPLE OF NAVTEX SYSTEM
1-3
1. PRINCIPLE OF NAVTEX SYSTEM
1.5 NAVTEX Station Li st
NAV
area
I Belgium Oostende 51 11 N02 48 E518 55 T 0310, 0710, 1110, 1510, 1910, 2310
Country
Estonia Tallinn 59 30 N24 30 E518 250U 0320, 0720, 1120, 1520, 1920, 2320
Note: The list shows the stations listed at Longwave Navtex Broadcasts (Oct. 2004).
1-8
2. OPERATION
2.1 Operating Controls
Registers items on menus.
MENU
ENT
ESC
Cursor pad
-Shifts the cursor and display.
-Selects items on menus.
Opens menu/Returns to the previous display.
LIST
DIM
PRINT
Adjusts the panel and LCD dimmer.
+: Raises the setting.
- : Decreases the setting.
Display unit, front vi ew
2.2 Turning the Unit On/Off
Press the
the start up display, where the ROM and RAM are checked for proper operation
and the program no. is displayed. The results of the check are shown as OK or
NG (No Good).
When the results are OK, the list display is shown after five seconds after
completion of the check, with frequency last used before turning the power off.
key to turn the unit on. A beep sounds and the equipment shows
Opens the LIST options.
Opens the PRINT options.
Turns the power on/off.
DUAL CHANNEL NAVTEX
NX-700
FURUNO ELECTRIC CO., LTD.
ROM : OK RAM : OK
Program No. 0850193-XX
XX: Program version No.
2-1
2. OPERATION
At the default setting, the equipment functions as below;
When the results of the check are OK, ALL MESSAGE display for 518 kHz
appears. This screen shows all messages received in 518 kHz.
You can switch 518 kHz (International message) and 490 kHz (local message) to
display. The NX-700A is preset to print all received message out.
Note 1: To display all received messages in 490 kHz, press ◄ or ►.
Note 2: To cancel the printing all received messages out, see page 2-11.
To turn the power off, press the
Note: If NG appears for any test, try to press any key to go to the next stage.
All message display (518 kHz)
key again.
The equipment, however, may not be operated properly. Contact your
dealer if the problem persists.
2.3 Adjusting LCD Dimmer
You can adjust LCD and panel dimmer with the + DIM – key. The adjustment
range is 0 (dark) to 9 (bright).
+: Raises the dimmer.
-: Decreases the dimmer.
2-2
2.4 Confirming the New Message
When you receive a new message, do one of the following depending on
message received.
SAR (Search and Rescue) mes sage
1. When an SAR message is received, the audible alert sounds and details for
the SAR message appear.
Icon for SAR message
2. Press any key other than
Other messages
key to silence the alarm.
2. OPERATION
1. When a message other than an SAR message is received, the display shows
one of the following windows.
Received new int'l msg.
Display new msg ?
Yes No
International message
2. If you want to read the message immediately, press ◄ to choose “Yes” and
then press the ENT key to display the message
To read the message later, choose “No”, and then press the ENT key to
close the window.
Received new local msg.
Display new msg ?
Yes No
Local message
2-3
2. OPERATION
2.5 Sample Messages
Press ▲ or ▼ on the cursor pad to choose a message, and then press the ENT
key to show the detailed information for that message. The message list and
detailed message displays can be switched by pressing the ENT key.
Category of messages
(paragraph 2.11)
New
Old
Operation guide
Message list Detailed message
Frequency (paragraph 2.9)
Status icon (paragraph 2.14)
No. of saved messages
Station ID, type of message,
serial No. (two digits, paragraph 1.3)
Receiving
date
ENT key
Message icon (paragraph 2.14)
Error rate
Note 1: The operation guide at the bottom of screen shows the functions of the
keys available for use with the current screen.
Note 2: The character size can be changed. For detail, see page 2-18.
Key Display modeFunction
▲▼
List Scrolls the list.
Detailed Scrolls the message.
◄►
List Switches the international and local lists.
Detailed Shows the newer (◄) or older (►) message.
MENU
List
Shows the main menu.
Detailed
ENT
List Shows the detailed message selected.
Detailed Shows the message list.
LIST
PRINT
List
Detailed
List
Detailed
Shows the list options.
Shows the print options.
2-4
2.6 Choosing the Receive Mode
The NAVTEX menu allows you to select what station to receive, automatically,
manually. The Auto mode requires navigation data, and stations are
automatically selected according to the distance between own ship and NAVTEX
stations. If navigation data is not input, all stations are selected. The manual
mode lets you freely stations to receive. The INS mode allows you to set the
station, message and local channel from the external equipment (ex. Integrated
Navigation System, using NMK sentence) connected.
1. Press the MENU/ESC key to show the main menu.
Menu
NAVTEX
System
Display
Service
2. OPERATION
Main menu
2. Press ▲ or ▼ to choose NAVTEX.
3. Press the ENT key or ► to open the NAVTEX menu.
NAVTEX
Receive Mode Manual
Local Channel 490kHz
Auto Print All
Rcv Station & Msg
User Select Station & Msg
NAVTEX menu
4. Press ▲ or ▼ to choose Receive Mode, and then press the ENT key or ► to
show the receive mode options.
INS
Auto
Manual
Receive m ode options
5. Press ▲ or ▼ to choose INS, Auto or Manual as appropriate, and then press
the ENT key.
6. Press the MENU/ESC key several times to close the menu.
2-5
2. OPERATION
2.7 Choosing the Local Frequency
You can choose 490 kHz or 4209.5 kHz as the local frequency. This function is
only available for the Auto and Manual modes. (See paragraph 2.6.)
1. Press the MENU/ESC key to show the main menu.
2. Press ▲ or ▼ to choose NAVTEX, and then press the ENT key or ►.
3. Press ▲ or ▼ to choose Local Channel, and then press the ENT key or ► to
show the local channel options.
490kHz
4209.5kHz
Local channel options
4. Press ▲ or ▼ to choose the frequency 490 kHz or 4209.5 kHz, and then
press the ENT key.
5. Press the MENU/ESC key several times to close the menu.
2.8 Editing the Settings for Station and Message
Stations and messages for receiving/displaying on each station (message) can
be edited as below.
Rcv Stat ion & Msg
Station
You can receive messages by station when Manual is chosen as the Receive
Mode on the NAVTEX menu.
Message
You can choose the messages to receive when Manual or Auto is chosen as the
Receive Mode on the NAVTEX menu. Note that A/B/D/L cannot be rejected.
User Select Station & Msg
Station
Choose the station to display on User Selected Messages, which is shown when
the LIST key is pressed.
Message
Choose the type of message to display on User Selected Messages, which is
shown when the LIST key is pressed.
Note 1: For messages, the alarm message is displayed always.
Note 2: When User Select is chosen as the Auto Print on NAVTEX menu, only
the messages chosen here are printed. (See paragraph 2-11.)
1. Press the MENU/ESC key to show the main menu.
2. Press ▲ or ▼ to choose NAVTEX, and then press the ENT key.
2-6
2. OPERATION
3. Press ▲ or ▼ to choose “Rcv Station & Msg” or “User Select Station & Msg”.
4. Press the ENT key to open the appropriate editing window. (Below is the Rcv
Station & Msg editing window.)
Recieve mode
Rcv Station & Msg [Auto]
Internaitional frequency
Station
Message
[518]
Station
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Message
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Local frequency*
[490]
Station
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Message
Changeable item
ABCDEFGHIJKLMNOPQRSTUVWXYZ
[ ][ ] MOVE
[ENT] EDIT [MENU] RETURN TO MENU
*: Local channel selected at Paragraph 2.7.
Edit wi ndow (ex. Rcv S tation & M s g)
5. Press ▲ or ▼ to choose the item to edit, and then press the ENT key to
show the alphabet selection window.
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Cursor
6. Press ◄ or ► to choose the alphabet desired, and then press ▲ or ▼ to
choose to receive or not.
The alphabet you have chosen not to receive is marked with “-“ (hyphen).
7. Press the ENT key
8. Repeat steps 5 through 7 to complete.
9. Press the MENU/ESC key to close the window.
2-7
2. OPERATION
2.9 Switching the Frequency to Display
With showing the message list, you can switch the frequency to 518 kHz or 490
(or 4209.5) kHz by pressing ◄ or ► key.
Press
518
Swit c hing t he frequency to di s play
490 (4209)
2.10 Alarm Messages
The sequence of events when an alarm message is received is as shown below.
When receiving SAR (Search and Rescue) message:
The audible alarm beep sounds, and the SAR message is shown. Note that All
Messages list appears if other list option is chosen when the ENT key is pressed.
(See paragraph 2.11.)
When receiving WARNING message (A/B/L) :
When the Warn Msg Alm on System menu is set to On, the audible alarm
sounds and the message for receiving appears.
Silenci ng audible alarm
Press any key (except
key).
2-8
2.11 Processing Messages
Choosing messages to display
You can choose which category of messages to display: All, Alarm, User
Selected and Good messages.
1. With the message list or detailed message shown, press the LIST key to
show the list options.
All Messages
Alarm Messages
User Messages
Good Messages
Lock Message
List options
2. Press ▲ or ▼ to choose the item.
All Messages: Shows all messages received.
Alarm Messa ge s: Shows only SAR/WARNING messages.
User Selected Messages: Shows messages arranged at User Select Station &
Msg on NAVTEX menu.
Good Messages: Shows messages whose error rate is less than 4%.
3. Press the ENT key to close the window.
The list chosen at step 2 appears.
Note: When the following messages appear, set the List window to All Messages
to show.
Urgent message:
“Message not chosen for display received; it is a int’l (or local) 00 message.
Choose “All Message” (LIST menu) to display.”
Normal messag e:
Int’l (or local) message not chosen for display received. Choose “All
Message” (LIST menu) to display.”
2. OPERATION
2-9
2. OPERATION
Protecting message from deleting
Messages are automatically deleted from the memory under the following
conditions.
-66 hours passed from the moment when received.
-Older than No. 200
To prevent a message from being deleted, do the follows;
1. Choose the message at the list display.
2. Press the LIST key to show the list options.
3. Choose Lock Message from the list window.
Note 1: To unlock a message, choose it and then select Unlock Message in the
Note 2: When you unlock a message which was received 66 hours ago or a
Note 3: Maximum each 50 messages for International and local (or 25% of each
All Messages
Alarm Messages
User Messages
Good Messages
Lock Message
List options
The protect icon (
list window. (The protect icon disappears.)
message that is older than No. 200, it will be deleted promptly when
unlocked.
memory) can be protected.
) appears next to the message selected.
2.12 Printing Messages
Received messages can be printed automatically or manually, from the built-in
printer (NX-700A) or external printer (NX-700B).
Printing all messages displayed
All messages chosen on paragraph 2.11 can be printed out.
1. Press the PRINT key with showing all messages.
Print
Cancel Print
2. Press ▲ or ▼ to choose “Print”.
3. Press the ENT key to print.
Note: When a message is received while printing some messages, the new one
cannot be printed.
Print opt ions
2-10
2. OPERATION
Printing each message
1. Press ▲ or ▼ to choose the desired message from the list.
2. Press the ENT key to show the detailed information.
3. Press the PRINT key.
4. Press ▲or ▼ to choose “Print” from the window.
5. Press the ENT key to print.
Printing messages automati cally
When receiving a message, it can be printed out immediately.
1. Press the MENU/ESC key to open the main menu.
2. Press ▲ or ▼ to choose NAVTEX, and then press the ENT key to show the
NAVTEX menu.
3. Press ▲ or ▼ to choose Auto Print, and then press the ENT key to open the
auto print options.
Off
All
User Select
Auto print options
4. Press ▲ or ▼ to choose All, User Select or Off as appropriate.
All: Prints all messages when receiving.
User Select: Prints only the specified messages at User Select Station & Msg
on the NAVTEX menu when receving.
Off: All messages are not printed automatically.
5. Press the ENT key.
6. Pres the MENU/ESC key several times to close the menu.
Canceling printing
When a menu is displayed, you cannot cancel the printing.
1. Press the PRINT key while showing the messages to open the print window.
2. Press ▼ to choose “Cancel Print” and then press the ENT key.
2-1 1
2. OPERATION
2.13 Editing the NAVTEX Station List
Maximum 300 NAVTEX stations can be registered into the memory.
Note: To cancel editing of a NAVTEX station, press the MENU/ESC key. The
message “Exit without saving?” appears. Choose “Yes”, and then press
ENT key.
Adding NAVTEX station
You may add a NAVTEX station to the NAVTEX station list as follows:
1. Press the MENU/ESC key to show the main menu.
2. Press ▲ or ▼ to choose Service, and then press the ENT key.
Service
INS Input Speed 4800bps
INS Output Speed 4800bps
Print Header On
Edit Station List
Default Setting
Test
Rcv Monitor
Service menu
3. Press ▲ or ▼ to choose Edit Station List, and then press the ENT key.
5. Confirm that NavArea is chosen, and then press the ENT key to show the
area No. window.
6. Press ▲ or ▼ to choose a Nav area No. (1 to 16, and EXT), and then press
the ENT key.
For NAV area No., see paragraph 1.4. EXT is reserved for future use.
7. Confirm that Station is chosen, and then press ENT key.
8. Enter a station name (Max. 18 characters), and then press the ENT key.
a) Press ▲ or ▼ to choose a character. Each press of ▲ shows A -> … -> Z ->
a -> … -> z -> 0 -> … -> 9 -> _ -> - -> space in that sequence.
b) Press ► to move the cursor to next digit.
c) Repeat steps a) and b) to complete the station name.
9. Confirm that Latitude is chosen, and then press the ENT key.
10. Enter the latitude for station, and then press the ENT key.
Use ▲ or ▼ to switch to North and South.
11. Confirm that Longitude is chosen, and then press the ENT key.
12. Enter the longitude for station, and then pres the ENT key.
Use ▲ or ▼ to switch to East and West.
13. Choose 518kHz, 490kHz or 4209.5kHz, and then press the ENT key.
14. Enter the station ID (A to Z), and then press the ENT key.
For multiple stations, fill in ID2 and ID3.
15. Confirm that Range is chosen, and then press the ENT key.
16. Enter the service area (1 to 999 nm), and then press the ENT key.
17. Confirm that Save data? is chosen, and then press the ENT key.
The message “Save new station?” appears.
18. Press ◄ to choose “Yes”, and then press ENT key to close the new addition
window disappears.
Note: If the station ID was not entered at step 14, the message “Enter ID
data.” appears. Press any key, and then enter the station ID.
19. To enter another NAVTEX station, repeat steps 4 through 18.
20. Press the MENU/ESC key several times to close the menu.
2-13
2. OPERATION
Editing NAVTEX station
Existing NAVTEX station may be edited as follows:
1. Press the MENU/ESC key to show the main menu.
2. Press ▲ or ▼ to choose Service, and then press the ENT key.
3. Press ▲ or ▼ to choose Edit Station List, and then press the ENT key.
4. Press ◄ or ► to choose the NAV area to be changed (01 to 16, EXT).
5. Press the LIST key to choose the frequency to be changed (518kHz, 490kHz
6. Press ▲ or ▼ to choose the station, and then press the ENT key.
7. Press ▲ to choose “Edit”, and then press ENT key to show the edit window
or 4209.5kHz).
appears.
NAV Area
Station Name
Longitude
Service Area
Latitude
Station ID
Edit
Delete
Oostende
NavArea1
Station Oostende
Latitude 51 11'N
Longitude2 48'E
518kHzID1: T ID2: - ID3: 490kHzID1: - ID2: - ID3: -
4209.5kHzID1: A ID2: - ID3: Range 55nm
Save data ?
Edit wi ndow (Ex. NAVTEX station Oostende)
8. Edit data as appropriate.
9. Confirm that Save station? is chosen, and then press the ENT key.
10. Press ◄ to choose “YES”, and then press the ENT key to erase the edit
window.
11. Press the MENU/ESC key several times to close the menu.
Deleting NAVTEX stations
You may delete unnecessary NAVTEX stations as follows:
1. Press the MENU/ESC key to show the main menu.
2. Press ▲ or ▼ to choose Service, and then press the ENT key.
3. Press ▲ or ▼ to choose Edit Station List, and then press the ENT key.
4. Press ◄ or ► to choose the NAV area to be deleted. (01 to 16, EXT).
5. Press the LIST key to choose the frequency to be deleted (518kHz, 490kHz
or 4209.5kHz).
6. Press ▲ or ▼ to choose the station name to be deleted, and then press ENT
key.
The item window appears.
2-14
7. Press ▲ or ▼ to choose Delete, and then press the ENT key.
The message “Delete station?” appears.
8. Press ◄ to choose “Yes”, and then press the ENT key to close the edit
window.
9. Press the MENU/ESC key several times to close the menu.
2.14 Icons
The NX-700 shows various icons to denote equipment status, and these are as
shown in the table below.
Icon Status Meaning
Status icon (shown at the tip of display)
Edit
Delete
2. OPERATION
Blinking
L1
Blinking
L2
Blinking
I Blinking
L1 Blinking
L2
Lighting
X
Lighting
P
R
Lighting While printing.
Message icon (shown next to messages)
NEW
Blinking
Lighting
Shows that an International frequency (518 kHz)
message has not been read.
Shows that a Local frequency message has not
been read.
L1: 490 kHz, L2: 4209.5 kHz
Appears while receiving a message.
I: International frequency (518 kHz)
L1: 490 kHz
L2: 4209.5 kHz
Displayed when the voltage of the internal battery is
low. The message “Battery error” also appears on
the display.
Print error (no paper, not connected to the printer,
etc.). The message “Printer error” also appears on
the display.
Displayed when message is displayed for the first
time.
(This icon disappeared after showing the detail or 24
hours has passed.)
SAR Lighting Displayed when message type D (SAR) is displayed.
!!
Lighting Protected message
Lighting
Appears when message type A, B or L (Warning) is
displayed.
2-15
2. OPERATION
2.15 Messages List
In addition to the message “Received new local (int’l) msg.” the following
message-related messages may appear on the display.
Message Meaning Remedy
New message received.
Oldest message deleted to
free up memory.
Same message with lower
error rate received.
Currently displayed
message will be deleted.
Term of validity expired.
Currently displayed
message will be deleted.
Message not chosen for
display received; it is a int’l
00 message. Choose “All
Message”(LIST menu) to
display.
Message not chosen for
display received; it is a
local 00 message. Choose
“All Message”(LIST menu)
to display.
Int’l message not chosen
for display received.
Choose “All
Message”(LIST menu) to
display.
Local message not chosen
for display received.
Choose “All
Message”(LIST menu) to
display.
Appears when the oldest
message is deleted to
make space for the latest
one.
Appears when two
messages have the
same ID are received
and the latter’s error rate
is lower than the former.
Appears when 66 hours
has passed after
receiving the currently
displayed message.
Appears when receiving
an international message
not specified for display
(00) at the SELECT
MESSAGES display.
Appears when receiving
a local message not
specified for display (00)
at the SELECT
MESSAGES display.
Appears when receiving
an international message
not specified for display
(Normal) at the SELECT
MESSAGES display.
Appears when receiving
a local message not
specified for display
(Normal) at the SELECT
MESSAGES display.
Press any key.
Press any key.
Press any key.
Press any key, and then
choose All Message in
the List window.
2-16
2.16 Other Functions
This paragraph describes the various options which allow you to set up your unit
to suit your needs.
NAVTEX menu
Item Description Setting
Receive
Mode
Local
Channel
Auto Print Chooses the message to print
Rcv Station &
Msg
User Select
Station &
Msg
System menu
Chooses the receiving mode. (See
paragraph 2.6.)
Chooses the local channel. 490kHz, 4209.5kHz
automatically. (See paragraph 2.12.)
Receives messages in the category.
Sets the station and type of message to
be shown on the SELECT MESSAGES
display.
2. OPERATION
INS, Auto, Manual
Off, All, User Select
-
-
Item Description Setting
Warn Msg Alm
Signal Monitor
Key Beep Turns key beep on/off. On, Off
Time Offset
Units
Printer Sets the printer type. (See paragraph 4.6.)
Turns the audible alarm on/off when receiving a
Warning message (A, B, and L).
Turns the audible alarm for monitoring of Rx
signal on/off.
Off: Disables monitoring.
Int’l: Monitors international frequency.
Local: Monitors local frequency.
If a GPS receiver feeds nav data to the NAVTEX,
you may use local time instead of UTC time.
Enter the time difference between local time and
UTC time.
Chooses units of measurement (distance and
ship speed) to be shown on the User Display.
On, Off
Off, Int’l, Local
-13:30 to
+13:30
nm, kt,
km, km/h,
mi, mi/h
None,
NX-700A,
Upright,
Inverted
2-17
2. OPERATION
Display menu
Item Description Setting
Selects the speed of scrolling by pressing ▲ or ▼.
Slow: Scrolls by one line.
Scrolling
Fast: Scrolls by half of screen.
Skips t o $$:
Scrolls line by line in list display; Skips to $$ position in detailed
display.
Small,
Font Size Selects the size of characters.
Medium,
Large
Time Display Selects the time format. 24 hour,
12 hour
Selects the date format.
Date Display
MMM DD YYY,
DD MMM YYYY,
YYYY MMM DD
Selects the type of data as user display to be shown at the
bottom of the display.
Nav Data
Slow, Fast,
Skip to $$
Date
Own ship's
position
Ship's speed
User Display
MAY 07 2005 00:00:18
12 34. 001 ' N
123 45. 001 ' E
SOG 1. 6 kt
[ ][ ] SCROLL[ ][ ] CHANGE FREQ
[MENU] MENU[ENT]
[LIST] LIST MENU [PRINT] PRINT MENU
COG 56. 9
SHOW MESSAGE
Course
Nav Data,
Distance
Distance
Distance between the positions shown in the message and
own ship's when receiving.
DISTANCE 23.4nm
[ ][ ] SCROLL[ ][ ] CHANGE FREQ
[MENU] MENU[ENT]
[LIST] LIST MENU [PRINT] PRINT MENU
SHOW MESSAGE
Speed
Display
Selects the speed format to be displayed.
SOG: Speed Over Ground
STW: Speed Through Water
SOG, STW
Contrast Sets the display contrast. 0 to 9
Off,
2-18
2. OPERATION
Service menu
Item Description Setting
4800,
INS
Input
Speed
Selects the data transmission speed at which to input data
from INS.
9600,
19200,
38400
bps
4800,
INS
Output
Speed
Selects the data transmission speed to output data to the INS.
9600,
19200,
38400
bps
Turns the header (Own ship’s position, date, frequency, error
rate and distance information when receiving a message) for
printing on/off.
518kHzError Rate: 0.0%
Received MAY 07 2005 01:12:53
Position34 28'N134 03'E
Distance 23.4nm
ZCZC AA10
Header
On, Off
Print
Header
Edit
Receiving date
Own ship's poisition
when receiving
Distance between the positions shown in the messasge
and own ship's when receiving.
Edits/deletes stations. (See paragraph 2.13.) -
Station
List
Default
Restores all default settings. (See paragraph 3.5.)
Settings
Test Starts the diagnostic test. (See paragraph 3.4.) -
Shows the status for International and Local receiving.
International
message
-
Rcv
Monitor
Local message
-
2-19
2. OPERATION
This page is intentionally left be blank.
2-20
3. MAINTENANCE &
TROUBLESHOOTING
This chapter provides information necessary for keeping your unit in good
working order and remedying simple problems.
WARNINGWARNING
Do not open the equipment.
Hazardous voltage which can
cause electrical shock exists
inside the equipment. Only
qualified personnel should
work inside the equipment.
3.1 Maintenance
Regular maintenance is important for optimum performance. A maintenance
program should be established and should at least include the items shown in
the table below.
Maint enanc e pr ogram
Item Check point Remedy
Display unit connectors Check for tight connection. Tighten loosened connectors.
LCD The LCD will, in time,
accumulate a coating of dust
which tends to dim the picture.
Wipe LCD lightly with soft
cloth to remove dust.
Wipe the LCD carefully to
prevent scratching, using
tissue paper and an LCD
cleaner. To remove dirt or salt
deposits, use an LCD cleaner,
wiping slowly with tissue
paper so as to dissolve the dirt
or salt. Change paper
frequently so the salt or dirt
will not scratch the LCD. Do
not use solvents such as
thinner, acetone or benzene
for cleaning.
Ground terminal Check for tight connection and
corrosion.
Clean or replace ground wire
as necessary.
3-1
3. MAINTENANCE & TROUBLESHOOTING
3.2 Replacement of Fuse, Battery and Thermal
Paper
Fuse
The fuse inside the receiver unit protects the equipment from overcurrent or
reverse polarity. If the fuse blows, contact your dealer about replacement.
Name Type Code No.
Fuse FGMB 2A 125V 000-103-165
WARNING
Use the proper fuse.
Use of a wrong fuse can result in damage
to the equipment or cause fire.
Battery
A battery is installed inside the display unit, and it preserves data when the
power is turned off. The life of the battery is about 5-10 years, and its voltage is
checked when the power is turned on. When its voltage is low, the BATTERY
(
dealer to request replacement of the battery.
Note: When the battery is dead, all default settings are restored.
) icon appears on the display to alert you. When this happens, contact your
Name Type Code No.
BATT CR2450-F2ST2L000-144-941
WARNING
Ensure battery polarity is correct.
Wrong polarity may cause the batteries to
explode.
3-2
LCD Display
The life of the LCD is approx. 20,000 hour. When the LCD has expired, the
brilliance cannot be raised.
3. MAINTENANCE & TROUBLESHOOTING
Thermal paper (NX-700A o nly)
When the thermal paper runs out completely, the message “Printer error” (center
X
of screen) and the
icon (at the right-hand top corner) appear. Replace the
paper as follows.
Name Type Code No.
Thermal paper TP058-30CL 000-154-047
1. Turn off the power.
2. Press the button shown below to open the paper holder cover.
Eject button
3. Peel the tape from the end of new paper.
Tape
4. Set the new paper in the paper container in the direction shown below.
Paper holder
New paper
Paper holder cover
5. Pull the end of the paper by 2 to 3 cm (as shown above), and then close the
cover.
3-3
3. MAINTENANCE & TROUBLESHOOTING
3.3 Troubleshooting
This section provides simple troubleshooting procedures which the user can
follow to restore normal operation. If you cannot restore normal operation do not
attempt to check inside the unit. Any trouble should be referred to a qualified
technician.
If . . . then . . .
you cannot turn on the power
the equipment receives unwanted
messages.
NAVTEX signal cannot be received.
paper does not advance. (NX-700A only) load paper correctly.
paper feeds but no recording. (NX-700A
only)
paper has darkened. (NX-700A only)
the recording is not proper for the external
printer. (NX-700B only)
-ask serviceman to replace the blown
fuse.
-check battery for proper voltage
output.
confirm that “Manual” is chosen at
Receive Mode on the NAVTEX menu.
check equipment by the diagnostic
test.
check the broadcasting schedule.
check that the D-sub connector is
firmly fastened.
check that the antenna cable is firmly
fastened.
check if correct thermal paper is being
used.
keep the paper in a well-ventilated and
cool place.
check the setting of Printer on the
System menu.
check the printer cable.
check that the power of printer is
turned on and status is
“SELET/READY”.
check that the printer is available.
check that paper is set properly.
3-4
3.4 Diagnostics
The memory test checks ROM, RAM, data port, battery, keyboard and LCD for
proper operation and displays program version numbers.
1. Press the MENU/ESC key to open the main menu.
2. Press ▼ to choose Service, and then press the ENT key.
3. Press ▲ or ▼ to choose Test, and then press the ENT key.
The message “Start test?” appears.
4. Press ◄ to choose “Yes”, and then press the ENT key.
3. MAINTENANCE & TROUBLESHOOTING
Memory Test
Program No : 0850193-01.*
Boot: 0850192-01.*
ROM: OK
SRAM: OK
DRAM: OK
CPU RAM: OK
EEPROM: OK
Battery: OK (3.2V)
Hit any key.
*: Program version no.
Memory te s t
For any NG (No Good), contact your dealer.
5. When the message “Hit any key.” appears at the bottom of screen, press any
key (except
key) to show the key test screen.
Ke y Test
If there is no operation for
10 s, the screen changes.
Key test
6. Press each key (except
A key is functioning properly if its on-screen location fills in black when the key is
pressed.
key) one by one.
7. After all keys have been tested or no key is pressed after 10 seconds, the
equipment starts the LCD test by showing the white and black display (level
0 to 9).
3-5
3. MAINTENANCE & TROUBLESHOOTING
8. When the message “Hit any key” appears on the screen, press any key
(except
The alarm for receiving monitor sounds while the Rx test is being conducted.
Also the test message is printed when the item other than “None” at Printer on
System menu.
key) to show the Rx test screen.
Rx test
9. When the message “Hit any key.” appears on the screen, press any key
(except
10. Press the MENU/ESC key several times to close the menu.
key) or wait for one minute with no operation to finish.
3.5 Restoring all Default Settings
This operation restores all default settings. The following two settings, however,
are not disturbed.
-Received messages
-NAVTEX stations list (See paragraph 2.13.)
1. Press the MENU/ESC key to show the main menu.
2. Press ▼ to choose Service, and then press the ENT key.
3. Press ▲ or ▼ to choose Default Setting, and then press ENT key.
The message “Restore default settings?” appears.
4. Press ◄ to choose “Yes”, and then press the ENT key.
The Service menu appears.
5. Press the MENU/ESC key several times to close the menu.
3-6
4. INSTALLATION
4.1 Display Unit
The display unit can be installed on a tabletop, on the overhead, or in a panel.
Refer to the outline drawings at the back of this manual for installation
instructions. When selecting a mounting location, keep in mind the following
points.
• Locate the unit away from exhaust pipes and vents.
• Locate it of direct sunlight, (or in a suitable, ventilated enclosure) to prevent
heat which can build up inside the cabinet.
• The mounting location should be well ventilated.
• Mount the unit where shock and vibration are minimal.
• Allow sufficient maintenance space at the sides and rear of the unit and leave
sufficient slack in cables, to facilitate maintenance and servicing.
• Compass safe distances are:
NX-700A (Standard: 1.45 m, Steering: 0.95 m)
NX-700B (Standard: 0.30 m, Steering: 0.30 m)
T abletop, overhead mounting
1. Fix the hanger by using four self-tapping screws (5x20).
2. Screw knob bolts in display unit, set it to the hanger, and tighten the knob
bolts.
Note: For the overhead mounting, reinforce the mounting location for the weight
of the display unit (NX-700A: 3.3 kg, NX-700B: 0.7 kg) and secure the
hanger, with bolts, nuts and washers (local supply).
NX-700A
NX-700B
4-1
4. INSTALLATION
Flush mounting
The display unit can be installed flush mounted in a console or panel by using
the optional flush mount kit.
.
(For NX-700A)
Type: OP08-19 Code No.: 004-514-810
Name Type Code No. QtyRemarks
Mounting metal 08-023-1019 100-326-960 1
Self-tapping screw 5X20 000-802-081 6
Hex. bolt M8x15 000-862-144 2
Spring washer M8 000-864-262 2
1. Cut out a hole with dimensions as shown below in the mounting location.
30+1
168+0.5
284+0.5
156+1
7
275+1
7
4
Fixing hole
2. Attach the fixing metal to the display unit with two hex. bolts (M8x15,
supplied with optional kit) and spring washers (supplied with optional kit).
3. Fasten six self-tapping screws to fix the display unit to the mounting location.
(For NX-700B)
Type: OP08-20 Code No.: 004-514-820
Name Type Code No. Qty Remarks
Mounting metal 08-023-2011100-327-0101
Self-tapping screw 5x20 000-802-0814
Pan head screw M4x12 000-802-1304
1. Cut out a hole with dimensions as shown below in the mounting location.
144+1
155+0.5
156+1
4-2
155+0.5
4
Fixing hole
2. Attach the fixing metal to the display unit with four pan head screws (M4X12,
supplied with the optional kit).
3. Fasten four self-tapping screws (supplied with the optional kit) to fix the
display unit to the mounting location.
4. INSTALLATION
4.2 Receiver Unit
General mounting considerations
• The mounting location should be well ventilated and dry.
• The unit can be mounted on bulkhead or the desk.
• Secure the maintenance space shown in drawing at the back of this manual
for ease of maintenance and service.
• Compass safe distances are:
Standard: 1.15 m, Steering: 0.75 m
Mounting Method
Fasten the receiver unit with four self-tapping screws (5x20, supplied as
installation material). For bulkhead mounting, do the follows.
1. Tighten lower self-tapping screws so there is 5 mm clearance between
bottom of screw head and bulkhead.
2. Hook the receiver unit on the lower screws.
3. Tighten upper screws followed by the lower screws.
Fixing hole 2- 6
205+1
8
210+1
6
210+1
Notch
4-3
4. INSTALLATION
4.3 Antenna Unit
Mounting considerations
Install the antenna unit referring to the antenna installation diagram at the back
of this manual. When selecting a mounting location for the antenna unit, keep in
mind the following points:
• Do not shorten the antenna cable.
• The NX-700 contains a very sensitive receiver. To avoid mutual interface with
other radio equipment, do not install this unit near an SSB/VHF/CB
radiotelephone.
Coat here with silicone sealant to
prevent breakage of the cable by
vibration.
Wrap the vinyl sheet to prevent
the breakage of the cable, and
then fix the hose clamp.
4-4
4.4 Printer (NX-700B only)
Prepare the printer by locally as shown below for the NX-700B.
-8 bit parallel Centronics interface, or serial RS-232C
-Serial printer
-Baud Rate: 9600 bps
-Character length: 8 bit
-Parity: No
-Flow control: Xon/Xoff
-32 characters/line or more
4.5 Wiring
4. INSTALLATION
Ground wire
IV-1.25sq (Local supply)
DSUB25P-DSUB25P cable
Ground wire
IV-1.25sq (Local supply)
(Local supply)
Display unit
NX-700A or B
(3m)
Power cable
DPYC-2.5
Antenna ubit
NX-7H
Antenna cable
04S4168 10/20/30/40/50m
Receiver unit
NX-7001
-INS or Navigator
-Printer (for NX-700B only)
-Alarm
12-24VDC
4-5
4. INSTALLATION
Receiver unit
All cables are gathered to the receiver unit. Connect cables at inside of the
receiver unit as shown below.
TB401
(+)
RCV Board
08P3227
TB402
(-)
J401
J402*
1 2 3 4 5 6
J403
1 2 3 4 5 6 7 8
Antenna cable
(to Antenna unit)
DPYC-2.5
(to ship's battery)
TTYCS-1Q
(to Navigator
Printer cable
(to Printer, NX-700B only)
or INS )
DPYC-1.5
(to External alarm)
DSUB25P-DSUB25P-3M cable
(to Display unit)
Receiver unit, inside view
Use the following JIS cable (Japan Industrial Standard) or equivalent to connect
power source, INS and external alarm appropriately.
DPYC-2.5
φ =
12.5 mm
Conductor
S = 2.5 mm
φ = 2.01 mm
Armor
Sheath
2
DPYC-1.5
φ =
11.7 mm
Conductor
S = 1.5 mm
φ = 1.56 mm
Armor
Sheath
2
TTYCS-1Q (Four core twisted)
Armor
Sheath
φ = 11.3 mm
Conductor
S = 0.75 mm
φ = 1.11 mm
Shield
2
4-6
For printer, use the cable supplied with the printer.
Fabricate these cables as below to connect to the receiver unit.
DPYC-1.5 (For external alarm)
Vinyl sheath
25 mm
100 mm
4. INSTALLATION
5 mm
Scrape the paint off the cable
where the cable contacts the cable clamp.
TTYCS-1Q (For Navigator or INS)
Scrape the paint off the cable
where the cable contacts the cable clamp.
DPYC-2.5 (For ship’s battery)
25 mm
25 mm
Soldering
Shield
Soldering
Vinyl sheath
100 mm
Vinyl wire
5 mm
100 mm
Vinyl wire
5 mm
Crimp-on lug
(M4, local supply)
Vinyl sheath
Scrape the paint off the cable
where the cable contacts the cable clamp.
How to use J402 and 403 connector
1. Insert the terminal opener (attached in the receiver unit) into the connector.
2. Insert a wire in terminal while pressing and holding the terminal opener.
3. Release the terminal opener. Pull wire to confirm that it is connected firmly.
Terminal opener
Wire
4-7
4. INSTALLATION
Antenna cable
Be sure to leave some slack in the cable for future service and maintenance.
For RG-10/UY, RG-214 cable
When using the coaxial cable, type RG-10/UY or RG-214, attach the FM-MP-7
connector (supplied as installation material) or PL-259 (loc al supply) as below.
1. Remove the sheath by 30 mm.
2. Bare 23 mm of the center conductor. Trim braided shield by 5 mm and tin.
3. Slide coupling ring onto cable.
4. Screw the plug assembly on the cable.
5. Solder plug assembly to braided shield through solder holes. Solder contact
sleeve to conductor.
6. Screw coupling ring into plug assembly.
Sheath
Braided shield
5 mm
30 mm
2 mm
Conductor
Insulator
Plug assembly
Coupling ring
Contact sleeve
Solder both
sides of hole.
Cut conductor here.
Note: When the RG-214 cable is used, care must be exercised to p revent
damage to the cable as it has no armor.
Solder here
.
4-8
4. INSTALLATION
Extending antenna cable length
When connecting two cables for extension, use optional extension cable kit
OP-04-2.
Code No.: 000-041-174 (10 m), 000-041-175 (20 m), 000-041-176 (30 m),
000-041-177 (40 m), 000-041-178 (50 m)
Name Type Code No. Qty Remarks
005-948-320 10 m w/connectors
005-948-330 20 m w/connectors
Cable assy 04S4168
Connector FMA-1 000-152-964-101
Insulating tape U tape 0.5x19x5M000-800-985 1
005-948-340 30 m w/connectors
005-948-350 40 m w/connectors
005-948-360
1
50 m w/connectors
OP04-2
To Receiver unit
FMA-1 connector
Grounding
The ground wire (local supply) should be 1.25 sq or larger. The ground wire
should be as short as possible.
4-9
4. INSTALLATION
4.6 Setting of Printer
After the connection completely, the setting of printer should be done for
NX-700B as shown below. (For NX-700A, use the default setting as is.)
1. Press the
2. Press the MENU key to show the main menu.
3. Press ▼ to choose System, and then press the ENT key or ► to activate the
System menu.
key to turn the power on.
Menu
NAVTEX
System
Display
Service
System
Warn Msg AlmOff
Signal MonitorOff
Key BeepOff
Time Offset+00:00
Unitsnm, kt
PrinterNX-700A
4. Press ▼ to choose Printer, and then press the ENT key or ► to show the
item window.
None
NX-700A
Upright
Inverted
5. Press ▲ or ▼ to choose the appropriate setting, and then press the ENT
key.
None: When no printer is connected.
NX-700A: For NX-700A only.
Upright: When NX-700B is connected to an upright-type printer which ejects
paper in bottom to top direction.
Inverted: When NX-700B is connected to a bulkhead mount printer which ejects
paper in top to bottom direction.
6. Press the MENU key several times to close the menu.
4-10
4.7 Digital Interfacing
This equipment can receive navigation data in IEC 61162-1 Ed2/2 format.
5. Number of satellite in use,00-12, may be different from the number in view
6. Horizontal dilution of precision
7. Antenna altitude above/below mean sealevel, m
8. Geoidal separation, m
9. Age of differential GPS data
10. Differential reference station ID, 0000-1023
11. Checksum
NOTE
0 = fix not available or invalid
1 = GPS SPS mode, fix valid
2 = differential GPS, SPS mode, fix valid
3 = GPS PPS mode, fix valid
4 = Real Time Kinetic. Satellite system used in RTK mode with fixed integers
5 = Float RTK. Satellite system used in RTK mode with floating fingers
6 = Estimated (dead reckoning) mode
7 = Manual input mode
8 = Simulator mode
The GPS quality indicator shall not be a null field.
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = Estimated (dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The Mode indicator field supplements the Status field. The Status field shall be
set to V=invalid for all values of Operating Mode except for A=Autonomous and
D=Differential. The positioning system Mode indicator and Status field shall not
be null fields.
A = Autonomous
D = Differential
E = Estimated (dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The Mode indicator field supplements the Status field. The Status field
shall be set to V=invalid for all values of Operating Mode except for
A=Autonomous and D=Differential. The positioning system Mode indicator
and Status field shall not be null fields.
Command to request specific NAVTEX message(s) to be sent to IBS port. Messages may be
sent in any order. Each message sent from the IBS port shall be preceded by the NRX sentence.
$-NRQ,x,h,h*hh<CR><LF>
Note 1: the transmitter coverage area mask is defined as a 32 bit mask 0xFF.FF.FF.FF where
the least significant bit represents transmitter coverage area ’A’, the next bit is ’B’ and so on up
to bit 25 which is ’Z’. Bits 31-26 shall be set to ’0’. To select a transmitter coverage area its
corresponding bit shall be set to ’1’; to deselect a transmitter coverage area its corresponding
bit shall be set to ’0’.
Note 2: the message type mask is defined as a 32 bit mask 0xFF.FF.FF.FF where the least
significant bit represents message type ’A’, the next bit is ’B’ and so on up to bit 25 which is ’Z’.
Bits 31-26 shall be set to ’0’. To select a message type its corresponding bit shall be set to ’1’;
to deselect a message type its corresponding bit shall be set to ’0’.
NMK: Set NAVTEX mask
Command to set B1.B2 mask for specific NAVTEX message(s) to be stored in internal message
memory & echoed to the IBS port.
$-NMK,x,h,h*hh<CR><LF>
Note 1: the transmitter coverage area mask is defined as a 32 bit mask 0xFF.FF.FF.FF where
the least significant bit represents transmitter coverage area ’A’, the next bit is ’B’ and so on up
to bit 25 which is ’Z’. Bits 31-26 shall be set to ’0’. To select a transmitter coverage area its
corresponding bit shall be set to ’1’; to deselect a transmitter coverage area its corresponding
bit shall be set to ’0’.
Note 2: the message type mask is defined as a 32 bit mask 0xFF.FF.FF.FF where the least
significant bit represents message type ’A’, the next bit is ’B’ and so on up to bit 25 which is ’Z’.
Bits 31-26 shall be set to ’0’. To select a message type its corresponding bit shall be set to ’1’;
to deselect a message type its corresponding bit shall be set to ’0’.
encapsulated message
error rate % (xx.x)
UTC of receipt of message
year
month (1-12)
day (0-31)
freq ('490', '518' or '4209')
number of lines in message (1 to 999)
line number (1 to 999)
message identifier (B
The first NRX sentence transmitted for a particular NAVTEX message shall contain valid data
for all fields. For subsequent NRX sentences encapsulating a NAVTEX message, all fields apart
from 'message identifier', 'line number' and 'encapsulated message' are optional. If UTC time or
date are not known then the fields are NULL.
Example usage:
1B2B3B4
)
$NXNRX,TA21,1,4,518,10,01,2005,102000,2.2,291600 UTC JAN =*hh
$NXNRX,TA21,2,4,,,,,,,OOSTENDERADIO - INFO 37/04 =*hh
$NXNRX,TA21,3,4,,,,,,,WESTHINDER ANCHORAGE, ANCHOR LOST IN*hh
$NXNRX,TA21,4,4,,,,,,,POSITION 51-24.94N 002-40.02E.+*hh
Example usage when no UTC is available to the equipment:
$NXNRX,T A21,1,4,518,,,,,2.2, TEST MESSAGE*hh
Where the NAVTEX message contains reserved characters as defined in IEC 61162-1, then
these shall be handled by using ASCII 'escape code' :