Specifications - Furuno 1835 Operator's Manual

FURUNO
SPECIFICATIONS OF MARINE RADAR
1 GENERAL
1.1 Range scale, pulselength (PL) and Pulse repetition rate (PRR)
Range scale
(NM)
0.0625 to 1.5
1.5 to 3
3 to 36
Range scale
(NM)
0.0625 to 1.5
1.5 to 3
3 to 64
1.2 Range discrimination
1.3 Minimum range
1.4 Bearing resolution
1.5 Bearing accuracy
1.6 Range ring accuracy
2 ANTENNA UNIT
2.1 Radiator type
MODEL 1835
MODEL 1935/ MODEL 1945 Slotted waveguide array
2.2 Radiator length
MODEL 1835
MODEL 1935
MODEL 1945
2.3 Horizontal beamwidth
MODEL 1835
MODEL 1935
MODEL 1945
2.4 Vertical beamwidth
MODEL 1835
MODEL 1935/ MODEL 1945 22°
2.5 Sidelobe
MODEL 1835
MODEL 1935
MODEL 1945
2.6 Polarization
2.7 Antenna rotation speed
MODEL 1835 series
MODEL 1835
PRR
PL (μs)
(Hz approx.)
0.08 2100
0.3 1200
0.8 600
MODEL 1945
PRR
PL (μs)
(Hz approx.)
0.08 2100
0.3 1200
0.8 600
25 m
25 m
MODEL 1835: 4°, MODEL 1935: 2.4°, MODEL 1945: 1.9°
±1°
0.9％ of range in use or 8 m, whichever is greater
Printed array
60 cm
100 cm
120 cm
4.0°
2.4°
1.9°
20°
Within ±20° of main lobe: -18dB, outside ±20° of main lobe: -23dB
Within ±20° of main lobe: -20dB, outside ±20° of main lobe: -28dB
Within ±20° of main lobe: -24dB, outside ±20° of main lobe: -30dB
Horizontal
SP - 1
MODEL 1835 series
MODEL 1935
Range scale
PL (μs)
(NM)
0.0625 to 1.5 0.08
1.5 to 3 0.3
3 to 48 0.8
PRR
(Hz approx.)
2100
1200
600
E3579S01E-M