Seiwa MDS-18910R - Manual (Page 22)

4. Specifications
Scanner Unit
MDS-1R MDS-8R MDS-9R MDS-10R
Antenna 0.9feet, enclosed radome 1.5 feet, enclosed radome 1.8 feet, enclosed radome 3.5/4.5 feet, Open Antenna
Peak power output 2 kWatts 2 kWatts 4 kWatts 4 kWatts
Transmit frequency 9445 +/– 30 MHz 9445 +/– 30 MHz 9410 +/– 30 MHz 9410 +/– 30 MHz
Beam width Horizontal 7° 4.7° 4.0° 2.4°/1.7°
Vertical 25° 25° 25° 25°
Sidelobes Better than –20 dB Better than –20 dB Better than –20 dB Better than –23 dB
Rotation 30 rpm 30 rpm 24 rpm 24 rpm
Short 0.1 uSec/2200 Hz 0.1 uSec/2200 Hz 0.1 uSec/2000 Hz 0.06 uSec/4000 Hz
Medium1 0.3 uSec/1100 Hz 0.3 uSec/1100 Hz 0.25 uSec/2000 Hz 0.15 uSec/2000 Hz
Pulse length/PRF
Medium2 - - 0.5 uSec/1000 Hz 0.4 uSec/1000 Hz
Long 0.8 uSec/550 Hz 0.8 uSec/550 Hz 1.0 uSec/500 Hz 1.0 uSec/500 Hz
IF center frequency 60 MHz 60 MHz 60 MHz 60 MHz
IF bandwidth Short and Medium1 6 MHz 6 MHz 6 MHz 20 MHz
Medium2 and Long 3 MHz 3 MHz 3 MHz 5 MHz
Noise figure 10 dB nominal 10 dB nominal 6.0 dB or less 5.0 dB or less
Operating temperature –13 to 131 °F (–25 to +55 °C) –13 to 131 °F (–25 to +55 °C) –13 to 131 °F (–25 to +55 °C) –13 to 131 °F (–25 to +55 °C)
Wind force 100 knots relative 100 knots relative 100 knots relative 70 knots relative
Water resistance IPX6 (IEC529) IPX6 (IEC529) IPX6 (IEC529) IPX6 (IEC529)
Presentation Modes Heading up, North up, Course up Heading up, North up, Course up Heading up, North up, Course up Heading up, North up, Course up
Range scales (nm) 1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 24,
36 1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 24,
48
Minimum range Better than 66 feet (20 m) on 1/8 nm range Better than 66 feet (20 m) on 1/8 nm range Better than 66 feet (20 m) on 1/8 nm range Better than 66 feet (20 m) on 1/8 nm range
Range discrimination Better than 66 feet (20 m) Better than 66 feet (20 m) Better than 66 feet (20 m) Better than 66 feet (20 m)
Range accuracy Better than 23 feet (7 m) or 0.8% of maximum
range of the scale in use Better than 23 feet (7 m) or 0.8% of maximum
range of the scale in use Better than 23 feet (7 m) or 0.8% of maximum
range of the scale in use Better than 23 feet (7 m) or 0.8% of maximum
range of the scale in use
Bearing accuracy Better than 1° Better than 1° Better than 1° Better than 1°
Other functions Gain, STC, FTC, interference rejection, target
expansion Gain, STC, FTC, interference rejection, target
expansion Gain, STC, FTC, interference rejection, target
expansion Gain, STC, FTC, interference rejection, target
expansion
Mode of communication Ethernet Ethernet Ethernet Ethernet Interface
Transmission speed 100base-TX/10base-T 100base-TX/10base-T 100base-TX/10base-T 100base-TX/10base-T
Voltage supply 10.8 to 41.6 Vdc 10.8 to 41.6 Vdc 10.8 to 41.6 Vdc 10.8 to 41.6 Vdc
Power consumption 30 Watts or less 30Watts or less 45 Watts or less 80 Watts or less
Preheat time 90 seconds 90 seconds 120 seconds 120 seconds
Cable length 33 feet (10 m) standard 33 feet (10 m) standard 33 feet (10 m) standard 33 feet (10 m) standard