User's Manual Part 1
13
Each receiver has its own separate set of message filters; pressing the Select
XXXX kHz RECEIVER softkey cycles round the available receivers. The message
filter settings are all non-volatile and will be unchanged after a power cycle.
By default all Transmitting Stations and Message Categories are selected for
display – this is indicated by all the check boxes being empty.
In order to deselect a Transmitting Station or Message Category, navigate to the
relevant checkbox using the pad (t, u, p and q keys) and press ENTER. The
checkbox will then be marked to indicate that the Transmitting Station (or Message
Category, as appropriate) is now deselected and will not appear on the display.
Note that deselecting a Message Category (say ‘I’) in the top row (labelled ‘All’) will
remove Message Category ‘E’ from all Transmitting Stations. To disable message
categories from a specific station identity (eg ‘K’), scroll down until the selection
panel for ‘K’ is displayed, then select the appropriate checkbox as shown below.
Deselecting the first message category (labelled ‘*’) will disable all Message
Categories from the selected Station – take care not to select this option in the All
Stations panel!
There are three sets of message filter options for every Transmitting Station and
Message Category. The ‘STORE’ filter indicates that the selected message shall be
neither displayed nor stored in the non-volatile memory. The ‘IBS’ filter indicates
that the message shall not be sent to the IBS port on reception (if output of NRX
sentences to the IBS port is enabled). The ‘PRINT’ filter indicates that the selected
message should not be sent to the printer on reception (if printer output is enabled).
Setup mode: Receiver options
The Setup mode: Receiver options page contains diagnostics to assist with
installing and fault finding the NAV-7.
The lower part of the display is a monitor area which shows all received NAVTEX
characters in real time from the receiver selected as the monitor source, including
the phasing character (? ) and receive character error symbol (à), regardless of
transmitting station and message category filter settings.