NT888G MK2 AUTOPILOT OPERATING MANUAL
2.35 Optimising the Off Heading & Course Comparator Alarms … (Continued).
(iii)
Course Comparator Alarm (CCA) Operating Note
–
The CCA will only function when two heading inputs are connected to the
Autopilot system with nominated priorities of No. 1 and No. 2.
(Heading input types can be 2 x NMEA or 1 x NMEA & 1 x HSC2).
The CCA function can be programmed via the Autopilot Menus:-
For CCA ON or OFF
– Parameter No. 70 in the SET UP Menu.
For Heading difference level
– C.COMP in the LIMITS Menu.
NB.
The CCA delay time is always identical to the OHA DELAY time (a,b,c
above) and it must be noted that if only one heading input is available, the
CCA function must be switched
OFF
.
To switch ON/OFF the Course Comparator Alarm (CCA):-
a.
Simultaneously press the “
CANCEL
” and “
CONFIRM
” keys for 5 seconds
until the
Set Up
Menu is displayed with a blue cursor highlighting the Set
Up parameter currently selected.
b.
Rotate the Autopilot
Set Course
Control to move the cursor to parameter
number
70
(
COURSE COMPARATR
).
c.
Use the rotary (+/-) illum. control to set
ON/OFF
as required.
To set the Course Comparator Alarm (CCA) Trip Level:-
d.
Use the “
LIMITS
” key to enter the Limits Menu.
e.
Use the “
LIMITS
” key again to select “
C.COMP
” box followed by flashing
current value (
4° to 16°
).
f.
Use the rotary (+/-) illum. control to set the required value.
2.36 Setting and Confirming New Autopilot Courses.
New Autopilot Courses can be manually entered by:-
SET COURSE
rotary control movement (
clockwise = Stbd
).
CANCEL/CONFIRM
key use to initiate
U TURN, NEXT COURSE, +/-1º
turns.
New Autopilot courses can be automatically ordered by:-
TRACK CONTROL
command data – new heading to next waypoint.
Rotary Set Course control – Rotation of the Set Course control clockwise (Stbd) or
anticlockwise (Port) will order 0.5° (minimum) changes per “click”.
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