Technical Manual LAZ 5100 / ES 5100
OPERATING INSTRUCTIONS
TH 52 603 8001 EN Rev.: S
Technical Manual LAZ 5100 / ES 5100
4-15
4.5.1.1
NAV-Defaults
NAV
(Navigation)-
Defaults
are basic compulsory settings which must be used when
operating the system for navigational purposes. These are defined by the International
Maritime Organisation (IMO) and state that:
The system must operate with one channel only
The sound velocity must be set to 1500 m/s
The unit of measurement must be metric ( meters)
Water depth must be measured below the keel (DBK)
If the system is being operated in any other mode, e.g. units selected are feet or
fathoms, water depth from the surface is selected etc., the user can return to the
NAV
mode by calling up this
MENU
and selecting
NAV-Defaults
. A sub menu will appear
in which the user can choose between selecting
NAV-Defaults
and returning to the
ALARM MENU
. The sub menu is shown overleaf.
This function will
set the sounder
to NAV-Defaults !
Continue ? NO (NO, YES)
WARNING!
Figure 4-17: Alarm Menu (Warning)
To set the system back to
NAV
defaults
, call the
ALARM MENU
and press the
following keys:
CURSOR
(1x, to mark NAV-Defaults)
ENTER
(1x, to call up
SUB-MENU
)
CURSOR
or
(to select
YES
)
ENTER
(to confirm selection and exit
SUB-MENU
)
ESCAPE
(1x, to leave the
MENU
)
4.5.1.2
Maximum and Minimum Depth Alarms
The user can set the system alarm so that an audio/visual alarm is released if the
water becomes more shallow than a set minimum or deeper than a set maximum.
This depth is always measured from the ship's keel. An Alarm Test facility is available
so that the alarm function can be periodically tested. These settings are done as
described in chapter 4.4.3.
The audio alarm can be muted externally by a connected Mute Control.
