NT888G MK2 AUTOPILOT OPERATING MANUAL
1.12 Using the Track Function (Section 2.9 & 2.38) … (Continued).
To engage the Track function:-
(It is assumed that valid track data is available to the Autopilot system).
(i) With the Autopilot engaged
(
ON
) use the “
TRACK
” key to
accept data.
NB
. In the event that no data is
available, the “
HCS fault: Track
steering failed. No input data
”
alarm will be generated (visual
and audible).
(ii)
Valid Track data acceptance will
be confirmed below the Track
graphic as “
HTC DATA
”,
“
HSC DATA
” or “
APB DATA
” as appropriate and the New Heading to
Waypoint (
NEW HDG
TO WP
) display area flashing accompanied by the
red and green control panel chevrons requesting Confirm or Cancel
action.
(iii) If the Track Mode Heading to Waypoint is to be accepted – use the
“
CONFIRM
” key.
(If the “
Confirm
” key is used, the vessel will immediately turn to take up
the ordered new Heading to Waypoint and the Track graphic will show
vessel icon left or right of heading with the error angle below).
If the Track Mode Heading to Waypoint is to be rejected – use the
“
CANCEL
” key.
(If the “
Cancel
” key is used, a silent period will follow beyond which the
Cancel/Confirm request will be repeated and this sequence will continue
until the Track Heading is accepted or Track Mode is set to “
OFF
”).
(iv) To disengage the Track Mode at any time, use the “TRACK” key when it
will be noted that the Track graphic will automatically be removed from the
Control Unit display and the corner LED in the “TRACK” key will turn off.
NB
. Track data failure during Track Mode operation is signalled by a
Control Unit generated alarm. Further operational alarms requesting
Operator action (CONFIRM/CANCEL) will also be generated as follows:-
$XXHSC & $XXAPB Operation
– Confirm/Cancel action required for any
New Heading to Waypoint change in excess of 10°.
$XXHTC
Operation
– No Cancel/Confirm action required – New Heading
change to next waypoint will be executed automatically.
