Navitron NT888G MK2, Руководство по эксплуатации

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NT888G MK2 AUTOPILOT OPERATING MANUAL
2.5 The Rotary (+/-) Illumination Control (Continued).
The Menu Parameter Adjust Function:-
When any of the three Autopilot Menus have been entered ( Set Up Menu,
Controls Menu or Limits Menu) the parameter highlighted by the cursor is
adjusted using the rotary (+/-) illumination control which, in this mode, does not
alter control panel/display illumination levels.
2.6 The LIMITS Menu.
The Limits Menu is rapidly and conveniently entered from all Autopilot operating
modes (STANDBY, ON, TRACK etc.) by single press operation of the “
LIMITS ”
key.
Adjustable Limits parameters are listed on the
right side of the operational display (as shown)
and each item is selected by further use of the
“
LIMITS ” key accompanied by a blue bar to
confirm parameter selected. The value – or
state – of the chosen item is then changed via
the rotary (+/-) illumination control.
2.6 (i) Rudder Limit.
This is always a manually set control via the LIMITS Menu and specifies the
maximum angle of Rudder that the Autopilot is normally permitted to apply.
However, the Limit set can be exceeded if the Autopilot system is obliged to
demand a greater angle of rudder to check high rates of turn.
The required Rudder Limit angle can be set “ OFF ” or between 5° and 45° in 5°
steps and an audible and visual warning is generated when the specified rudder
limit angle is reached.
2.6 (ii) Off Heading Alarm.
Any departure by the vessel from the Set Course by a predetermined angle
specified via the LIMITS Menu will be signalled both audibly and visually as “
OFF
HEADING ”. (In addition to the Control Unit alarm, volt free contacts also exist in
the Distribution Unit for Auxiliary alarm use).
To avoid unnecessary alarms, a time delay between 10 and 60 seconds can be
set via the Autopilot
SET UP Menu to allow the vessel to return within the limits
set (+/-4° etc.) to accommodate natural yaw or course changes to a new heading.
(The OHA & CCA delays are always identical).
To set the Off Heading Limit:-
a) Use the “ LIMITS ” key to enter the Limits Menu.
b) Use the “ LIMITS ” key again to select “ O.H.A. ” box followed by flashing
current value ( 2° to 30° or OFF ).
c) Use the rotary (+/-) illum. control to set as required.
STEP ALIGN
002.5