Furuno FR-7252, FR-7112 manual Specifications of Marine Radar, FR-7062/7112/7252

SPECIFICATIONS OF MARINE RADAR

FR-7062/7112/7252

1. GENERAL

(1) Indication System PPI Daylight display, raster scan, 8 tones in monochrome

(2)Range, Pulselength (PL) & Pulse Repetition Rate (PRR)

(range max. FR-7062: 64 nm, FR-7112: 72 nm, FR-7252: 96 nm)

Range (nautical miles)

PL

PRR

0.125

0.25

0.5

0.75

1

1.5

2

3

4

6

8

12

16

24

36

48

64

72

96

SP

2100 Hz

0.08 ∝ s

MP

1200 Hz

0.3 ∝

s

LP

600 Hz*

0.8 ∝ s

*550 Hz on 48 nm to 72 nm range, or 500 Hz on 96 nm range

(3)

Range Resolution

Better than 20 m

(4)

Bearing Discrimination

XN12A: within 1.9º, XN13A: within 1.2º

(5)

Minimum Range

25 m (0.25 NM range)

(6)

Bearing Accuracy

Within 1º

(7)

Range Ring Accuracy

0.9 % of range or 8 m, whichever is the greater

2. SCANNER UNIT

(1)

Radiator

Slotted waveguide array

(2)

Polarization

Horizontal

(3)

Antenna Rotation Speed

24 rpm nominal: XN12A (100 kt max.), XN13A (100 kt max.)

48 rpm nominal: XN12A (70 kt max.)

(4)

Radiator Length

XN12A:120 cm, XN13A: 180 cm

(5)

Horizontal Beamwidth

XN12A: 1.9°, XN13A: 1.2°

(6)

Vertical Beamwidth

22°

(7)

Sidelobe Attenuation

XN12A:

Within ±20° of main-lobe: less than -24 dB

Outside ±20° of main-lobe: less than -30 dB

XN13A:

Within ±10° of main-lobe: less than -24 dB

Outside ±10° of main-lobe: less than -30 dB

3. TRANSCEIVER MODULE

(1)

Frequency

9410 MHz ±30MHz (X band)

(2)

Modulation

P0N

(3)

Peak Output Power

FR-7062: 6 kW, FR-7112: 12 kW, FR-7252: 25 kW

(4)

Modulator

FET Switching Method

SP - 1