Navitron NT888G MK2, Руководство по эксплуатации, Страница: 55 / 77

NT888G MK2 AUTOPILOT OPERATING MANUAL
2.32 TO SET RATE OF TURN (Operational)… (Continued).
The Control Unit display continuously shows ACTUAL and SET ROT thus current
operational values are always available provided:-
ROT Mode selected (vs Radius) via CONTROLS Menu (Sect. 2.4 (vi)).
Deg/Sec or Deg/Min units selected via SET UP Menu (Sect. 2.6 (v)).
REQUIRED OPERATIONAL ROT:-
(i) Use the “ LIMITS ” key to enter the Limits
Menu.
(ii) Use the “ LIMITS ” key again to select
“ ROT°/S ” box followed by flashing
current value.
(iii) Use the rotary (+/-) illum. control to set
“ ROT ” value required.
2.33 Setting Maximum Safe Rate of Turn.
Unlike the operational Rate of Turn (Section 2.32) that can be overridden by Track
data commands from an Approved Track Control System, the Safe Rate of Turn
value can be specified by the Master, entered and stored in the Autopilot SET UP
Menu and will not be affected by external factors such as Track Control data etc.
Accordingly, the maximum Safe Rate of Turn limit set is the absolute maximum the
Autopilot will permit during automatic heading control.
To set maximum Safe Rate of Turn:-
(i) Simultaneously press the “ CANCEL ” and “ CONFIRM ” keys for 5
seconds until the Set Up Table is displayed with a blue cursor
highlighting the Set Up parameter currently selected.
(ii) Rotate the Autopilot Set Course Control to move the cursor to
parameter number 7 ( ROT MAXIMUM ).
(iii) Use the rotary (+/-) illum. control to set the maximum safe value of
ROT in °/SEC (0.1-10) or °/MINUTE (6-600) .
In the event that maximum Safe Rate of Turn is reached during Autopilot Control, the
Autopilot system will limit to prevent further increase and the Control Unit
ACTUAL
ROT display will show actual ROT value alternating with MAX .
2.34 Setting Radius of Turn.
RADIUS OF TURN
control is reliant on the availability of externally sourced Speed
over the Ground (SOG) data without which Radius of Turn control will not function.