Mcmurdo NAV6 Guía de usuario Pagina 6

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Nav6 Plus Navtex System User Guide
6
How Does Navtex Work?
How Does Navtex Work?How Does Navtex Work?
How Does Navtex Work?
NAVTEX transmissions are sent from stations situated worldwide.
The power of each transmission is regulated so as to avoid the
possibility of interference between transmitters. Each station is
allocated a 10-minute time slot every 4 hours so that many stations
can share the same frequency. Stations typically have a
transmission range of 250 – 300 Nm.
NAV6PLUS FEATURES
NAV6PLUS FEATURESNAV6PLUS FEATURES
NAV6PLUS FEATURES
Display Unit
Display UnitDisplay Unit
Display Unit
The Display Unit uses a high resolution backlit LCD to display
NAVTEX messages in a choice of text sizes.
The display unit contains a large non-volatile memory to store
NAVTEX messages, NAVTEX station database, all of the user
settings, filter options, LCD contrast and backlight levels. All
messages and settings are retained during power down.
Several messages can be displayed at once (depending upon
the length of the message) and messages can be scrolled with a
single keypress.
Messages can be filtered and sorted using a number of user
selectable criteria.
The Nav6plus can act as an NMEA instrument repeater and is
capable of displaying data in a choice of formats.
The Nav6plus can be connected to a printer or computer to print
NAVTEX messages and Navigation logs.
Audible and visible alarms can be set up to indicate reception of
SAR and/or New Messages.
A sleep mode allows long standby periods with minimum power
consumption, such as when the vessel is left in a marina with
main batteries being trickle charged from the shore.
Sensor Unit
Sensor UnitSensor Unit
Sensor Unit
The Sensor Unit contains a short whip antenna and dual receiver
that can receive on both 490kHz and 518kHz simultaneously.
Multiple sensors and displays can be connected together.
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