Furuno FR-1500 - Manual (Page 41)

-1.27-
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 is adjustable with the VRM rotary control (provided that
No.2 VRM is active).
1.27.1 Displaying/erasing the index lines
Press the [INDEX LINE] key to disconnect the VRM. Press the
[INDEX LINE] key to display/erase the index lines.
1.27.2 Selecting number of index lines to display
Maximum number of the index lines can be set for 2 or 6 on the
MARK/LINE sub menu in the OTHERS menu.
1.28 Reference Mark (not available with Video Plotter RP-17 or RP-180)
You can mark any reference points, prominent target or a point of particular interest using the
reference mark feature. This mark is geographically fixed, namely, ground stabilized. Twenty such
reference marks can be entered. Note this feature is inoperative when the RP-17 or RP-180 is
installed.
To use the reference mark:
1. Place the cursor (+) at a point where you want to place a reference mark by operating the
trackball.
2. Press the [MARK] key. The reference mark appears at the cursor position. The cursor
location is indicated on the screen.
1.28.1 Inscribing mark reference
The reference mark can be set relative to own ship, 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
3. Press the [2] to select the REL or TRUE as required.
4. Press the [ENTER/SELECT] key, then [MENU].
1.28.2 Erasing reference marks
Erasing individual reference marks
Select the Reference mark with the cursor and then press the [CANCEL/CLEAR] key.
Bearing of PI Lines