NAVTEX system operation
The world is divided into 16 areas (called Navareas) as shown at right.
Each Navarea has multiple NAVTEX stations and each NAVTEX station has
an identification code, from “A” to “Z.”
The service range of a NAVTEX station is typically 200-400 nautical miles
depending on the terrain and station transmit power. A NAVTEX station
normally broadcasts every four hours.
There are two channels including international channel, 518 kHz, and local
channels, 490 and 4209.5 kHz. International channels broadcast messages
in English. On local channels, 490 kHz, is available in the UK, France, etc.,
using their own languages. 4209.5 kHz is allocated for NAVTEX broadcasts
in tropical areas - not widely used at the moment.
SPECIFICATIONS
INTERFACE
Input
IEC61162-2
NAVTEX RECEIVER
Receiving Frequency
Mode of Reception
Sensitivity
ACK, GGA, GLL, GNS, NMK, NRQ, RMC, VBW,
VHW, VTG, ZDA
518 kHz and 490 or 4209.5 kHz
F1B
Output
Alarm
IEC61162-2 message data for INS, PC
ALR, NRX
RS-232C for printer(NX-700-B only)
Contact closure signal (max. 0.5A, 50V) for SAR alert
2 µV e.m.f. (50 ohms), 4% error rate
Withstands 30 Vrms for 15 min or more (w/ preamp unit)
1 nW or less
Input Protection
Spurious Emission
Message Category
A : Navigation warning
B : Meteorological warning
C : Ice report
POWER SUPPLY
NX-700-A:
12-24 VDC, 1.5-0.8 A
12-24 VDC, 0.7-0.4 A
D : Search and rescue information/ piracy
and armed robbery
NX-700-B:
ENVIRONMENT (fully complied with IEC 60945 3rd/4th ed.)
E : Meteorological forecast
F : Pilot message
Temperature
Antenna Unit:
-25°C to +70°C(-13°F to +158°F)
G: Decca message
Receiver, Display Unit: -15°C to +55°C(5°F to +131°F)
H : Loran-C message
Waterproofing
I : Omega message
Antenna Unit:
Receiver Unit:
Display Unit:
NX-700-A
IP66
IP20
J : Differential omega message
K : Other electronic navigational aid
and system message
L : Navigational warning (additional)
M to Y: Reserved - presently not used
V : Notice to Fishermen (US only)
Z : QRU (no message on hand)
IP20
IP25(front panel)
NX-700-B
EQUIPMENT LIST
Standard
DISPLAY
1. Receiver Unit NX-7001
1 unit
1 unit
1 unit
Screen Size
Resolution
5'' monochrome LCD, 76 x 100 mm
240(H) x 320(V)
2. Antenna Unit NX-7H
3. Display Unit with Bracket (Specify when ordering)
NX-700-A: Display with Printer, NX-700-B: Display only
4. Installation Materials and Spare Parts
Display Modes
ID Storage
Message Storage
Message, List, NAV Data
200 x 2 channels
200 messages x 2 channels (100,000 characters x 2 channels)
1 set
Option
PRINTER SECTION (for NX-700-A)
1. Antenna Mounting Base
Pipe mount: CP20-01111
Deck mount: 13-QA330
Handrail mount 13-RC5160
Offset bracket: 13-QA310
2. Cable for Antenna
4. Flush Mount Kit for Display Unit
for NX-700-A: OP08-19
Printing System
Printing Paper
Printing Width
Character Format
Dot Pitch
Number of Characters
Print Speed
Line thermal head printing system
Thermal paper (58 mm x 30 m)
48 mm
for NX-700-B: OP08-20
5. Power Supply Unit PR-240-CE
6. Thermal Paper for NX-700-A
24 x 12 dot
8 dots/mm
32 characters/line
20 mm/sec.
Dual-channel NAVTEX Receiver
3D2V,10/20/30/40/50 m;
RG10U, 30/40/50 m
3. Cable for Display Unit
D-Sub 25P to D-Sub 25P, 5/10/15 m
ANTENNA UNIT
Antenna Type
NX-7H: H-field antenna with preamp
50 ohms
+8 V to +9 V (thru co-ax cable)
Output Impedance
Power Supply
Message display with printer
Receiver Unit
Antenna Unit
INTERCONNECTION DIAGRAM
Display Unit
NX-7001 2.0 kg 4.4 lb
NX-7H 0.6 kg 1.3 lb
Antenna Unit
NX-7H
210 8.3"
2-
6
NX-700-A
(Display with printer)
NX-700-B
(Display only)
235 9.3"
156 6.1"
Message display unit
or
6
0.2"
210 8.3"
Display Unit
NX-700-A (Display with printer) 3.3 kg 7.3 lb
3 m,
5/10/15 m (option)
10/20/30/40/50 m
101 4.0"
120 4.7"
325 12.8"
270 10.6"
284 11.2"
SAR Alert
Receiver Unit
NX-7001
Alarm system
100 m max.
100 m max.
100 m max.
15 m max.
IEC61162-2
IEC61162-2
INS
7
0.3"
7
0.3"
275 10.8"
51 2.0"
RS-232C*
Printer
NX-700-B (Display only) 0.7 kg 1.5 lb
93 3.7"
56 2.2"
31
25
183 7.2"
149 5.9"
155 6.1''
Power Supply
1.2"
1.0"
Unit PR-240-CE
*NX-700-B only
156 6.1''
Option or
locally supply
12-24 VDC
100/110/115/
200/220/230 VAC
TRADE MARK REGISTERED MARCA REGISTRADA
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
FURUNO U.S.A., INC.
Camas, Washington, U.S.A.
Phone: +1 360-834-9300
Fax: +1 360-834-9400
FURUNO ESPAÑA S.A.
Madrid, Spain
Phone: +34 91-725-90-88
Fax: +34 91-725-98-97
FURUNO SVERIGE AB
Västra Frölunda, Sweden
Phone: +46 31-7098940
Fax: +46 31-497093
05055U Printed in Japan
FURUNO (UK) LIMITED
Denmead, Hampshire, U.K.
Phone: +44 2392-230303
Fax: +44 2392-230101
FURUNO DANMARK AS
Hvidovre, Denmark
Phone: +45 36 77 45 00
Fax: +45 36 77 45 01
FURUNO FINLAND OY
Espoo, Finland
Phone: +358 9 4355 670
Fax: +358 9 4355 6710
The future today with FURUNO's electronics technology.
Catalogue No. FX-619
FURUNO FRANCE S.A.
Bordeaux-Mérignac, France
Phone: +33 5 56 13 48 00
Fax: +33 5 56 13 48 01
FURUNO NORGE A/S
Ålesund, Norway
Phone: +47 70 102950
Fax: +47 70 127021
FURUNO POLSKA Sp. Z o.o.
Gdynia, Poland
Phone: +48 58 669 02 20
Fax: +48 58 669 02 21
9-52 Ashihara-cho, Nishinomiya City, Japan Phone: +81 (0)798 65-2111
TRADE MARK REGISTERED
MARCA REGISTRADA
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