Furuno FCR-28x9 Manual De Usuario

2.  RADAR, CHART RADAR OPERATION

The selected range scale, range ring interval and pulse length are shown at the top-
left position on the screen. When a target of interest comes closer, reduce the range 
scale so that it appears in 50-90% of the display radius.

Note: The IMO- and A-type radars do not have the 1 nm, 2 nm, 4 nm, 8 nm, 16 nm, 
32 nm and 120 nm ranges.

Use the RANGE key to select range desired. Hit the "+" part of the key to raise the 
range; the "-" part to lower the range.

Method 1: Click the range scale indication. 
Method 2: Click the appropriate range selection button. Click the "+" button to raise 
the range; the "-" button to lower the range. 
Method 3: Right-click the range scale indication to show a drop-down list of available 
ranges then click a range.

The pulse length in use is displayed at the top-left position on the screen, using the 
indications shown in the table below.

Appropriate pulse lengths are preset to individual range scales and function keys. If 
you are not satisfied with the current pulse length settings, you can change them as 
shown below.

μs)

L

Long pulse

1.2

M1

Medium pulse 1

0.3

M2

Medium pulse 2

0.5

M3

Medium pulse 3

0.7

S1

Short pulse 1

0.07

S2

Short pulse 2

0.15

Range scale

Range ring interval

Range selection
buttons