NorthStar Navigation Multi-Function Unit M84 - Manual (Page 68)

Northstar M121/M84 Installation and Operation Manual 67
8 To clear the VRM/EBL display, press ESC and
repeat steps 1 and 2. Then set Enable to .
If you want to find the range and bearing of
another target, repeat the sequence using the
other VRM/EBL. This is shown in a different
pattern.
18-9-2 Finding range and bearing with a
floating VRM/EBL
If you move the centre of a VRM away from
your boat it is called a floating VRM. Use this
to measure the range and bearing between
two locations on the radar window, such as a
headland and a buoy.
1 From the radar window, press MENU then
select VRM/EBL.
2 Select VRM/EBL then 1 (VRM/EBL 1) or 2
(VRM/EBL 1).
3 Set Enable to to show the VRM and EBL on
the radar window (or to hide them).
4 Select EBL reference if you want to change
the EBL bearing reference. There are two
choices:
• °R shows the EBL bearing relative to your
boat’s head.
• °M/°T shows the EBL bearing relative to
magnetic North or true North.
5 Select Set centre to move the VRM
and EBL centre away from your boat. Use the
arrow keys to move the centre so that it is
aligned over the first location.
6 Press
ENTER
to save the new centre position,
then press
MENU
and reselect the VRM/EBL.
7 Select Adjust to change the positions of the
VRM and the EBL so that you can align them
with the second location. Use:
• and to decrease and increase the
radius of the VRM until it touches the
second location to measure the range.
• and to move the EBL until it touches
the second location to measure the
bearing.
8 The range and bearing of the target is
shown at the bottom of the screen.
9 If you want to hide (or change the settings
for) the range rings, North line, and/or
heading line, press MENU then select Radar.
10 To clear the VRM/EBL display, press ESC and
repeat steps 1 and 2. Then set Enable to .
If you want to find the range and bearing
between two other locations, repeat the
sequence using the other VRM/EBL. This is
shown in a different pattern.