Installation manual

Page 17
This page can be used to indicate that messages from specified Transmitting Stations
or of specified Message Categories should NOT be displayed, stored or output as
required.
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 only message categories ‘A’ to ‘F’, ‘H’, ‘J’ to ‘L’, ‘V’ and ‘Z’ are enabled for
all Transmitting Stations. This is indicated by the check boxes for categories ‘G’, ‘I’,
‘M’ to ‘U’ and ‘W’ to ‘Y’ all being marked to indicate that they are being filtered out.
In order to deselect a Transmitting Station or Message Category, navigate to the
relevant checkbox using the pad (, ,  and  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 ‘I’ 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 check box. Deselecting the first
message category (labelled ‘*’) will toggle the state of all Message Categories from
the selected Station.
Message categories ‘A’, ‘B’, ‘D’ and ‘L’ cannot be individually controlled. If all
message categories for a station are deselected then categories ‘A’, ‘B’, ‘D’ and ‘L’ will
also be inhibited – so the station will be completely disabled. If at least one message
category is enabled for a particular station, then messages ‘A’, ‘B’, ‘D’ and ‘L’ will also
be enabled for that station.
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).
Note that the ENTER key toggles the value of any check box from checked to
unchecked and back again. Similarly, toggling any check box in the ‘All’ row, or in the
column headed ‘*’ will toggle the other entries in the row or column as appropriate.