12
3.5 Speaker
The speaker is mainly used to get an indication of the signal quality. A 1500 Hz frequency
modulated beat-note should be heard against a clean background (none or clean noise without
any sign of interference or noise bursts).
The volume of the speaker can be adjusted by pressing the
switch when you are not in
the menu mode and then the
▲
or
T
buttons.
3.6 Menu functions and programming
The Buoy Finder 4A receiver is fitted with a built in user interface. This user interface is used to
adjust the receive frequency to a buoy frequency, to store and to recall up to six preset buoy
reception frequencies and to monitor received signal characteristics.
The following paragraphs describe how to navigate through the menu functions.
The buttons used in the menu are (see also chapter 2):
•
the up / volume button, indicated by a
▲
;
•
the menu / select button, indicated by a
;
•
the down / on/off button, indicated by a
T
.
3.6.1 Activating the menu function
To activate the menu function
2
, push the “
” button and the LCD shows the “hold for menu”
message in its “main” area.
After a few seconds of holding the “
” button the display text changes from the receive mode
text into the following menu text:
Figure 3.2. The menu function mode with the function EXIT selected.
From here we are able to access the memory and info functions, to change the receive frequency
and / or to go back to the “receive mode” display text by using the “
▲
”, “
” and “
T
” buttons.
2
Entering the menu function does not influence the receiving and the decoding functions of the Buoy
Finder 4A, the receiver will continue to update the decoded position data.