Smiths Kelvin Hughes Nucleus 3 5000 Series, System Handbook

Page: 84 / 510

PLOT MENU
Func tion
75 Provides a selection of functions: Guard zone
activities, i.e. switching ON/OFF and setting Variable
zone range and bearing (BRG); Deleting all plots and an
Electronic ARPA computer reset facility; Selecting Bow
Crossing Range (BCR) or Closest Point of Approach (CPA)
also contains selection of Reference Targets and Sectors.
The Labels function applies labels to the targets. The menu
also contains END which exits the menu.
Se lec tion
76 To select the Plot menu:
(1) H i g h l i g h t t h e P L O T b o x a n d p r e s s a n y
pushbutton.
(2) The Plot menu boxes appear in the lower
right-hand corner of the screen as shown below.
Ref. Tar get
77
To operate the Reference Target function:
(1) Select a target on the Radar screen, highlight the
REF TGT box, the pop-down menu reads; Fix,
Unfix, Anchor.
(2) Press the appropriate pushbutton to Fix (Unfix)
the selected target. An ‘R’ appears on the selected
target and the Drift Input changes to ‘Fixed
Target’. If ‘Anchor Target’ is selected the ‘R’ is
replaced with an anchor in a box, and the Drift
Input changes to Anchor Watch. When the limit is
violated, the Red Alarm box contains the words:
NOTES:
(1) After the Anchor Alarm has been acknowledged, the
target reverts to a reference target. If Anchor Watch is still
required, it must be reactivated.
(2) When more than one target is annotated as ‘Fixed’ the
ARPA may drop a reference target if that target’s
parameters vary considerably from those of other
Reference Targets.
(3) To reset the ARPA computer and to delete
all
plots, position the cursor in the DEL ALL box, the
box is now highlighted. Press any pushbutton to
reset the computer and to delete all plots.
A highlighted box appears with the words:
Sec tor Se lec tion (Not EU)
78
To include/exclude sectors:
(1) Ensure Footprint Acquisition Zones are turned off.
(2) Highlight the ZONES box, pop-down boxes
appear with: Sect, Poly, FAZ. Press the left-hand
pushbutton and the following menu appears:
(3) A Sector Storage Level indication is provided
along the bottom of the Sector Selection menu. If
the Sector storage becomes full a
SECTOR
STORAGE FULL warning message is displayed
and some stored Sectors may need to be removed
to create space for new sectors.
(4) To load previously saved sectors, scroll the
selection box until required sector appears.
Highlight the sector and press the left-hand
pushbutton.
(5) To create a sector, highlight [Create] and press
any pushbutton. A dotted inclusive/exclusive
sector appears on the display, the information
menu states: Plot, Select. Press the centre
pushbutton to select that Sector. The following
menu appears:
(6) Press the left-hand pushbutton to activate the
sector.
(7) Place the cursor over the sector outline and press
the centre pushbutton. Set the sector size by
selecting and then moving each edge to the
required position, when correct press the centre
pushbutton.
KH 2020
Chap 2b
Amdt 5 2b.11 July 03
CD-4767
ANCHOR WATCH
ACKNOWLEDGE ALARM
CD-2081
CLICK AGAIN
NOW TO CONFIRM
ACTION
CD-2075
De-
Select
FAZ
Rings
Active Rings
Active
CD-1958
Zones
Active
Rings
Off