Furuno NAVNET 1724C - Manual (Page 36)

2. RADAR OPERATION
2-5
2.7 Range Scale
The range setting determines the size of the area (in nautical miles) that will appear on your
display. In addition, the range setting will also automatically adjust the range ring interval so
that accurate range measurements may be made while operating on any range setting.
The range, range ring interval and pulselength appear at the top left-hand corner of the
display.
Press the [RANGE (+ or -)] key to change the range scale.
Range scales (nm, sm)
Range 0.125 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 36 48 64 72
Ring
Interval
0.0625 0.125 0.125 0.25 0.25 0.5 0.5 1 1 2 2 3 4 6 12 12 16 18
No. of
Rings
2 2 5 4 5 4 5 4 5 4 5 5 5 5 4 5 5 5
Range scales (km)
Range 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 36 48 64 72
Ring Interval 0.125 0.25 0.25 0.25 0.5 0.5 1 1 2 2 3 4 6 12 12 16 18
No. of Rings 2 2 4 5 4 5 4 5 4 5 5 5 5 4 5 5 5
Note 1: Maximum range depends on the network radar as shown below.
Model 1724C, 1734C, 1824C: 24 nm
Model 1834C: 36 nm
Model 1934C: 48 nm
Model 1944C: 64 nm
Model 1954C, 1964C: 72 nm
Note 2: You may choose which ranges to use from the RADAR RANGE SETUP menu. For
details see paragraph 7.2.2. This function is not available with the GD-1720C.