Furuno 1832 - Manual (Page 52)

AP-2
ARP-10 (OPTION)
WARNING
This auto plotter is not designed to
replace the human eye nor make
decisions for the navigator. It is
intended for use as an aid to navigation.
Always maintain a watch while
underway. Data obtained from this auto
plotter should always be double checked
against other sources to verify the
reliability of the data.
This auto plotter automatically tracks a
acquired radar target and calculates its
course and speed, indicating it by a vector.
Since the data generated by this unit are
based on what radar targets are selected,
the radar must always be optimally tuned
for use with it to ensure that required
targets will not be lost or unwanted targets
such as sea returns and noise will not be
acquired and tracked.
A target echo does not always mean a
landmass, reef, ships or other surface
objects but can imply returns from sea
surface or precipitation. As the level of
these returns varies with environment, the
operator is required to properly adjust the
STC (ant-clutter sea), FTC (anti-clutter rain)
and GAIN controls to ensure that target
echoes within the affected area are not
eliminated from the radar screen. The
optimum settings of these controls may
slightly differ between the normal radar
operation and plotting, and it is
recommended to readjust them in
accordance with the operating mode
selected.
Hazardous voltage can
shock, burn, or cause death.
Only qualified personnel should
work in the unit.
The installation must be done by a
FURUNO representative or suitably
qualified radar technician.
Authorities require this.
Keep magnets and magnetic fields
away from the equipment.
Magnetic fields will distort the picture and
can cause equipment malfunction. Be sure
the unit is well away from equipment
which gives off magnetic fields
(speaker, power transformer, etc.).
NOTICE
The following items affect calculation
accuracy.
Q
echo intensity
Q
radar transmission pulsewidth
Q
radar bearing error
Q
gyrocompass error
Q
own vessel or other vessel course
change
Data for CPA, TCPA, etc. are
approximations only. Always use data
obtained prudently.