Specifications, Specifications of marine radar model 1623 – Furuno 1623 User Manual
Page 38
SP - 1
E3510S01C
SPECIFICATIONS OF MARINE RADAR
MODEL 1623
1
GENERAL
1.1
Indication System
PPI Daylight display, raster scan, 4 tones in monochrome
1.2
Range, Pulselength (PL) & Pulse Repetition Rate (PRR)
Range (nm)
0.125, 0.25, 0.5, 0.75 1, 1.5, 2
3, 4, 6, 8, 12, 16
Pulse Length
0.08
µ
s (short)
0.3
µ
s (medium) 0.8
µ
s (long)
Pulse Repetition Rate 3000 Hz nominal
1200 Hz nominal 600 Hz nominal
1.3
Range Resolution
16 m
1.4
Bearing Discrimination
6.7°
1.5
Minimum Range
22 m
1.6
Bearing Accuracy
Within 1°
1.7
Range Ring Ac curacy
1.0 % of range or 8 m, whichever is the greater
2
SCANNER UNIT
2.1
Radiator
Micro-strip
2.2
Polarization
Horizontal
2.3
Antenna Rotation Speed 24/31/41 rpm nominal (auto-select according to range)
2.4
Radiator Length
34 cm
2.5
Horizontal Beamwidth
Less than 6.2°
2.6
Vertical Beamwidth
25°
2.7
Sidelobe Attenuation
Less than -20 dB
3
TRANSCEIVER MODULE
3.1
Frequency
9410 MHz ±30MHz (X band)
3.2
Modulation
P0N
3.3
Peak Output Power
2.2 kW
3.4
Modulator
FET Switching Method
3.5
Intermediate Frequency 60 MHz
3.6
Tuning
Automatic
3.7
Receiver Front End
MIC (Microwave IC)
3.8
Bandwidth
15 MHz (short pulse), 5 MHz (medium/long pulse)
3.9
Duplexer
Circulator with diode limiter
3.10 Time of Heat-up
1-min. approx.
4
DISPLAY UNIT
4.1
Picture Tube
6” rectangular monochrome LCD
4.2
Display Pixels
240(H) x 320(V) dots, Effective radar display area: 240x240 dots