SP - 2
(6) Range, Pulselength (PL) & Pulse Repetition Rate (PRR)
FR-1710/1725:
Range (nm)
PL PRR (Hz) 0.125 0.25 0.5 0.75 1.5 3 6 12 24 48 72 96
S1P 3000 0.07 µs
S2P 3000 0.15 µs
M1P 1500 0.3 µs
M2P 1000 0.5 µs
M3P 1000 0.7 µs
LP 600 1.2 µs
*: Second echo trace mode PRR; 500 Hz
Maximum Range: FR-1710: 72 nm, FR-1725: 96 nm
FR-1760DS:
Range (nm)
PL PRR (Hz) 0.125 0.25 0.5 0.75 1.5 3 6 12 24 48 72 96 120
SP 1900 0.08 µs
M1P 1100 0.3 µs
M2P 600 0.6 µs
LP 600
*
1.2 µs
*: 450 Hz on 120 nm range
(7) Duplexer Ferrite circulator with diode limiter
(8) Noise figure FR-1710/1725: 6 dB, FR-1760DS: 4dB
3. RADAR DISPLAY
(1) Picture tube 17" color CRT, Effective display diameter: 225 mm
Yellow or green echoes in 16 levels
(2) Scanning Raster scan at scanning frequency 48.3 kHz horizontal, 60 Hz vertical.
Number of scanning lines 768, non-interlaced.
(3) Range scales and ring intervals
Range(nm) 0.125 0.25 0.5 0.75 1.5 3 6 12 24 48 72 96 120
Ring interval(nm) 0.025 0.05 0.1 0.25 0.25 0.5 1 2 4 8 12 16 20
No. of Rings 5 5 5 3 6 6 6 6 6 6 6 6 6
Maximum Range: FR-1710: 72 nm, FR-1725: 96 nm, FR-1760DS: 120 nm
(4) Range discrimination 34 m on 1.5 nm range
(5) Bearing discrimination XN12AF: 2.03°, XN20AF: 1.46°, XN24AF: 1.18°
SN4A: 2.83°, SN5A: 2.53°
(6) Minimum range 28 m
