Raymarine ST50 plus Specifications download pdf (Page 34)

18 ST50 PLUS RADAR Operation and Installation Handbook

@ CURSOR CONTROLS

The Cursor feature combines the EBL and VRM functions and can

be used to quickly determine the range and bearings from your

own ship to any point on the radar screen. The cursor appears on

the display as a large (+I character.

To turn ON the Cursor mode, just press the

-1

key. A

blocked word “CURSOR” appears at the bottom left side to let you

know that you are in the “Cursor” mode. The cursor (+I may now

be positioned by using the arrow keys. The cursor can be moved

diagonally by pressing the

keys simultaneously, or the

Ir/)keys

sim

aneously. When the cursor is set to a position

on the screen, the range and bearing, will be displayed in the

cursor window.

The bearing type of the cursor position will be the same as that

of the EBL as noted by the blank for Relative,

‘7”

True or “M”

Magnetic next to the cursor bearing.

To turn off the cursor, press the (CURSOR/ key again. The cursor

information will be replaced by position information.

@ CTR/ZOOM KEY

The Off Center Mode lets you re-position the radar picture center

at any other point on the display so you can have a greater view

in the direction of interest.

When

the-/key

is pressed, the position of own ship can

be set anywhere on the screen up to 66% of the radius.

Press theICTR/ZOOMIkey. Both the cursor and the message “Use

A./V/~/,

to set sweep origin or press CTR/ZOOM for zoom”

appears in the lower center portion of the display. Use direction

keys to set cursor for sweep origin (start point) then press

-[key

again to offset the picture. The Off Center Origin

is set using the arrow keys. To use the Off- Center feature set the

cursor with arrow keys to the desired location for the Off Center

sweep origin. Press the lCTR/ZOOM) key to activate the offset

mode and place own ship to the designed cursor location. The

origin of the radar sweep will now shift to the cursor point. To turn

off Off Center and recenter the sweep, press

the1

CTK/LUUM

IKey

again.

Section 3. Operation

The Off Center Mode does not operate on the 16 nm range and

cannot be used together with the ZOOM mode.

Since off centering cannot be used on the maximum range scale,

if the range scale is increased to 16 NM, the origin of own ship will

automatically “cancel” the OFF Center mode and recenter own

ship. If the radar system is turned OFF while off center mode is on,

at next power up the offset mode will still be on.

Offset

(.rljt

‘,

The Zoom mode can be used to magnify any designated area of

the display by “two times”. When thelCTR/ZOOM]key is pressed

twice quickly, “X2” will be displayed on the top left of the screen.

The area between own

‘ship

and the designated location can be

magnified by a factor of 2 times by using the cursor as the

centering point. The zoom location can be set any where on the

screen up to 66% of the radius by using

the arrow keys. Once you have set the cursor, press the

[CTR/ZOOMkey to turn “ON” Zoom mode. To assist you in

maintaining proper range determination, the fixed range rings are

also turned “on” automatically.

Zoom mode can provide a quick means of getting a closer look

at a channel entrance, for example, but for navigation purposes

it is recommended that you choose the next lower range scale and

use

the Off Center feature for the same effect. By pressing the

--__.

ICTR/ZOOM) key again, the function can be turneb “off”.

zoom

does not operate on the

l/8

nm range and cannot be used

together with “OFF CENTER”.

.-.

_..

.._.

_-_.-

.___._

_._.

-_-.

‘.-

__c______.”

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Raymarine ST50 plus Specifications Page 34

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