RA83/84/85/93/94/95 Series
Chapter 3
Operation Manual
Technical Specifications
Chapter 3 Technical Specifications
3.1 Antenna specification
Model name
RA83/93
RA84/94
RA85/95
Aerial length
4 feet / 6 feet / 9 feet
Peak power output
6 kW
12 kW
25 kW
Frequency
9410 +/- 30 MHz
Beam width Horizontal
1.8
o
/ 1.2
o
/ 0.8
o
Vertical
22
o
/ 22
o
/ 25
o
Side lobes /- 10
o
Better than –23 dB
O/- 10
o
Better than –30 dB
Rotation 24
r.p.m.
6 kW
12 kW
25 kW
0.08
µ
s / 4000 Hz
0.08
µ
s/2000 Hz
0.25
µ
s / 2000 Hz
0.3
µ
s / 1300 Hz
0.5
µ
s / 1000 Hz
0.6
µ
s / 800 Hz
Transmission pulse width
S (Short pulse)
M1 (Medium 1 pulse)
M2 (Medium 2 pulse)
L (Long pulse)
1.0
µ
s / 500 Hz
1.2
µ
s / 500 Hz,
400Hz(96NM)
IF center frequency
60 MHz
IF bandwidth
15 MHz (S, M1) / 3 MHz (M2, L)
Noise figure
Better than 6 dB
Operation in wind
100 knots as relative
Water proofing grade
IPX6 (IEC 60529)
3.2 Processor specification
Effective diameter
269
mm (at 18 inch LCD)
Resolution
1280 x 1024 pixels
Video level
8 levels
Presentation mode
Head-up, north-up, course-up and true motion
Range scale (NM)
1/8 1/4 1/2 3/4 1.5 3 6 12 24 48 64 (6 kW) 72 (12 kW) 96 (25 kW)
Rings interval (NM)
1/16 1/8 1/4 1/2 1 2 4 8 16 (6 kW) 12 (12 kW) 16 (25 kW)
Off-centering
Sweep origin can be moved to any point within 2/3 of the screen
radius.
Trail display interval
Every scan, 15 sec, 30 sec, 1 min, 3 min, 6 min, 12 min and OFF
Alarm
Entry alarm [alarm range (Minimum 0.5 NM), depth and bearing
can be varied]
EPA
Up to 10 targets can be plotted, 5 points for one target each
93142105-02
3-1
