Furuno NAVNET 1833 - Manual (Page 239)

SP - 1 E3502S01D
SPECIFICATIONS OF MARINE RADAR
MODEL 1833/1933/1943
1
GENERAL
1.1 Indication System PPI Daylight display, raster scan, monochrome CRT
1.2 Range, Pulse length (PL) & Pulse Repetition Rate (PRR)
Range (nm) Pulse length (
µ
s) PRR (Hz approx.)
0.125 to 1.5 0.08 2100
1.5 to 3 0.3 1200
3 to 64* 0.8 600
*Maximum Range: M1833: 36nm, M1933: 48nm, M1943: 64nm
1.3 Range Resolution 20 m
1.4 Bearing Resolution M1833: 4.0°, M1933: 2.4°, M1943: 1.9°
1.5 Minimum Range 27 m
1.6 Bearing Accuracy ±1°
1.7 Range Ring Accuracy 0.9 % of range or 8 m, whichever is the greater
2
SCANNER UNIT
2.1 MODEL1833:
2.1.1 Radiator Printed waveguide array
2.1.2 Polarization Horizontal
2.1.3 Antenna Rotation 24 rpm nominal
2.1.4 Radiator Length 60 cm
2.1.5 Horizontal Beamwidth 3.9°
2.1.6 Vertical Beamwidth 20°
2.1.7 Sidelobe Attenuation -18 dB or less (within ±20° of main-lobe)
-23 dB or less (±20° of main-lobe or more)
2.2 MODEL1933:
2.2.1 Radiator Slotted waveguide array
2.2.2 Polarization Horizontal
2.2.3 Antenna Rotation 24 or 48 rpm nominal
2.2.4 Radiator Length 100 cm (XN10)
2.2.5 Horizontal Beamwidth 2.4°
2.2.6 Vertical Beamwidth 27°
2.2.7 Sidelobe Attenuation -20 dB or less (within ±20° of main-lobe)
-28 dB or less (±20° of main-lobe or more)
2.3 MODEL1943:
2.3.1 Radiator Slotted waveguide array
2.3.2 Polarization Horizontal