Furuno FAR-21 7-BB Series, Operator'S Manual

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1. RADAR OPERATION
1-59
1.33 Automatic Picture Setup According to
Navigation Purpose
Every time your navigating environment or task changes, you must adjust the
radar, which can be a nuisance in a busy situation. Instead of changing radar
settings case by case, it is possible to assign the function keys to provide
optimum settings for often encountered situations.
The radar's internal computer offers several picture setup options to be assigned
to each function key for your specific navigating requirements. For instance, one
of the functions is assigned the buoy detecting function and labeled SHIP on the
on the PICTURE box. By choosing SHIP, the radar will be instantly set for
optimum detection of ships.
Four user-programmable setups are also provided (labeled
PICTURE1-PICTURE4), so that you may have the radar automatically adjusted
to those conditions which are not covered by the provided setup options.
Below are the preset picture setup options provided with this radar.
Picture setup options description
Label Description Label Description
NEAR Optimum setting for short range
detection using a range scale of 3
nm or less on calm seas FAR Optimum setting for long range
detection using a range scale of 6
nm or larger
NEAR
BUOY Optimum setting for detecting
navigation buoys, small vessels
and other small surface objects at
close range FAR
BUOY Optimum setting for detecting
navigation buoys, small vessels
and other small surface objects at
long range
HARBOR*
1
Optimum setting for short range
navigation in a harbor area, using
a range scale of 1.5 nm or less
COAST*
1
For coastal navigation using a
range scale of 12 nm or less
ROUGH
SEA Optimum setting for rough weather
or heavy rain SHIP Optimum setting for detecting
vessels
NEAR
BIRD*
2
Optimum setting for detecting birds
at close range FAR
BIRD*
2
Optimum setting for detecting
birds at distant range
*
1
Models other than FAR-2157, FAR-2167DS
*
2
FAR-2157, FAR-2167DS only
Each picture setup option defines a combination of several radar settings for
achieving optimum setup for a particular navigating situation. Those involved are
interference rejector, echo stretch, echo average, noise rejector, automatic
anti-sea and anti-rain clutters, video contrast, pulselength and sea and radar
conditions.
Adjusting these features from the PICTURE menu changes the original function
key settings. To restore the original settings for a particular picture setup option,
it is necessary to choose the default setting. For this reason, we recommended
that you use the user-programmable function sets when frequent adjustment of
the radar picture is necessary.