Furuno NX-700B Service Manual page 15

1.1 Overview
1.1.1 Configuration
This equipment is a dedicated NAVTEX receiver designed in conformity with the
revised NAVTEX Manual that can simultaneously receive two frequencies. Since July
2005, a vessel equipped with a NAVTEX receiver should be equipped with devices
meeting these requirements.
The available language is English and not multilingual. While broadcasting on the
International Navtex frequency of 518 kHz is available in English, broadcasting in a
local language may be available a local frequency of 490 kHz or 4209.5 kHz in some
countries by converting into the language of the country using the NAVTEX code
(4B-3Y).
The general requirements set out in the Resolution MSC.148 (77) includes the following
requirements:
The equipment should comprise radio receivers, a signal processor and:
1. an integrated printing device; or
2. a dedicated display device, printer output port and a non-volatile message
memory;
3 a connection to the INS (Integrated Navigation System) and a non-volatile
messages memory.
Reference:
1. Simultaneous two frequency (dual channel) reception means that the equipment
receives the international NAVTEX frequency of 518 kHz and a local frequency of
490 kHz or 4209.5 kHz at the same time and decodes messages on two
frequencies.
2. The connection to the INS means that the equipment performs NAVTEX alarm
reset ($ACK), transmission of received NAVTEX information to the INS ($NRX),
and setting of station selection and message selection ($NMK) from the INS to the
NAVTEX, through the use of sentences in IEC61162-1/2 format.
The international standards complied with are as follows;
- MSC.148 (77)
- IEC 61097-6 Ed.2 CDV (2005-02)
- IEC 61162-1/2
- EN 301 011V 1.1.1 (1998-09)
The equipment configuration comprises an Antenna unit of the magnetic-field type
NX-7H, a Receiver unit NX-7001, and either of two types of Display units NX-700A
which incorporates an LCD and a printer or NX-700B as a discrete device.
Chapter 1. Overview
- IMO A.694 (17)
- IEC 60945 Ed. 3/4
- EN 300 065V 1.1.3
- ITU-R M 540-2, M 625-3
1-1
1.1 Overview