Furuno FR-1710 manual Parallel Index Lines, Origin Mark

1.27 Parallel Index Lines

Parallel index lines are useful for keeping a constant distance between own ship and a coastline or a partner ship when navigating. The orientation of the index lines is controlled with the EBL rotary control and the intervals between the lines adjusted with the VRM ro- tary control (provided that No.2 VRM is ac- tive).

Index lines

Figure 1-36 Index lines

Displaying/erasing the index lines

Press the [INDEX LINE] key to display/erase the index lines. Each press of the key turns the parallel index lines on (enabling adjust- ment by VRM, EBL), fixes them on the dis- play or turns them off.

To use the origin mark:

1.Place the cursor (+) at a point where you want to place a reference mark by oper- ating the trackball.

2.Press the [MARK] key. The origin mark appears at the cursor position, of which range and bearing are indicated at the upper-right section of the screen.

Origin mark reference

The origin mark can be set relative to own ship (relative), or referenced to land (sea or ground stabilized).

1.Press the [MENU] key.

2.Press the [8] key twice to select MARK.

MARK

1. ERASE

2. MODE REL TRUE

Figure 1-37 MARK menu

3.Press the [2] to select the REL or TRUE from the MODE field as appropriate.

4.Press the [ENTER/SELECT] key.

5.Press the [MENU] key.

Selecting number of index lines to display

Maximum number of the index lines can be set for 2 or 6 on the MARK/LINE in the OTHER menu.

1.28 Origin Mark

You can mark any reference points, promi- nent target or a point of particular interest us- ing the origin mark feature. This mark is geographically fixed, namely, ground stabi- lized. Twenty such origin marks can be en- tered. This function is not available when the RP-17 board is installed.

Erasing origin marks

Erasing individual origin marks

Select the origin mark with the cursor and then press the [CANCEL/CLEAR] key.

Erasing all origin marks

1.Press the [MENU] key.

2.Press the [8] key twice to select MARK.

3.Press the [1] key twice.

4.Press the [MENU] key.

1-25