Furuno FR-8122 EN - Manual (Page 123)

FURUNO
FR-8xx2 Series
SP - 1
E3539S01G
SPECIFICATIONS OF MARINE RADAR
FR-8062/FR-8122/FR-8252
1. GENERAL
1.1 Range, Pulse length & Pulse repetition rate (PRR)
Range (nm) Pulse length (μs) PRR (Hz approx.)
0.125 to 1.5 0.08 2100
1.5 to 3 0.3 1200
3 to 96 0.8 600
1.2 Maximum Range 96 nm (FR-8252), 72 nm (FR-8122 and FR-8062)
1.3 Range Resolution 20 m
1.4 Bearing Resolution 1.9° (4 ft), 1.2° (6 ft)
1.5 Minimum Range 20 m
1.6 Bearing Accuracy ±1.0°
1.7 Range, Range Ring Accuracy 1.0% of range or 8 m, whichever is the greater
2. ANTENNA UNIT
2.1 XN-12A (4 ft)
2.1.1 Radiator Slotted array
2.1.2 Polarization Horizontal
2.1.3 Antenna Rotation 24 rpm, 36 rpm, 48 rpm. Range dependent or manual
selection
2.1.4 Radiator Length 120 cm (4 ft)
2.1.5 Horizontal Beamwidth 1.9°
2.1.6 Vertical Beamwidth 22°
2.1.7 Sidelobe Attenuation -24 dB or less (within ±10° of main-lobe)
-30 dB or less (±10° of main-lobe or more)
2.2 XN-13A (6 ft)
2.2.1 Radiator Slotted array
2.2.2 Polarization Horizontal
2.2.3 Antenna Rotation 24 rpm, 36 rpm, 48 rpm. Range dependent or manual
selection.
2.2.4 Radiator Length 180 cm (6 ft)
2.2.5 Horizontal Beamwidth 1.35°
2.2.6 Vertical Beamwidth 22°
2.2.7 Sidelobe Attenuation -28 dB or less (within ±10° of main-lobe)
-35 dB or less (±10° of main-lobe or more)