Sitex MDS-12 Manuel utilisateur
RADAR ANTENNA
Installation Manual
MDS-12 4Kw Radome Antenna
I
Do not open the equipment.
Hazardous voltage which can cause electrical shock, burn or serious
injury exists inside the equipment. Only qualified personnel should work
inside the equipment.
Wear a safety belt and hard hat when working on the antenna unit.
Serious injury or death can result if someone falls from the radar antenna
mast.
Stay away from transmitting antenna.
The radar antenna emits microwave radiation which can be harmful to
the human body, particularly the eyes. Never look directly into the
antenna radiator from a distance of less than 1 m when the radar is in
operation.
Turn off the radar power switch before servicing the antenna unit.
Post a warning sign near the switch indicating it should not be
turned on while the antenna unit is being serviced.
Prevent the potential risk of someone being struck by the rotating
antenna and exposure to the RF radiation hazard.
Do not disassemble or modify the equipment.
Fire, electrical shock or serious injury can result.
Turn off the power immediately if water leaks into the equipment or the
equipment is emitting smoke or fire.
Continued use of the equipment can cause fire or electrical shock.
Do not place liquid-filled containers on top of the equipment.
Fire or electrical shock can result if liquid spills into the equipment.
"DANGER", "WARNING" and "CAUTION" notices throughout this manual.
It
is
the responsibility of the operator and the installer of the equipment to read,
understand and follows these notices. If you have any questions regarding
these safety instructions, please contact an SI-TEX agent or dealer.
- 1-
FOREWORD
Thank you for choosing SI-TEX marine radar antenna. The radar antenna is designed
and constructed to meet the rigorous demands of the marine environment. However,
no machine can perform its intended function unless properly installed and maintained.
Please carefully read and follow the recommended procedures for installation, operation
and maintenance. While this unit can be installed by the purchaser,
any purchaser who has doubts about his or her technical abilities may wish to have the
unit installed by an SI-TEX Dealer or other qualified technician.
We want to Hear from you!
Your suggestions and comments are highly important to us.Please send us your feedback
at customerservice@SI-TEXmarine.com.
Again, Thank you for purchasing SI-TEX Equipment.
Features
The main features of the SI-TEX marine radar antenna:
•
Traditional SI-TEX quality and reliability in a compact, lightweight and low-cost
radar antenna.
•
Digital radar target technology.
•
Share the same protocol between all SI-TEX magnetron pulse radar antennas.
•
Built-in excellent sea and rain clutter algorithm.
•
Fully digital signal processing.
•
High performance microwave front end.
- 2-
MDS-12
SPECIFICATIONS
ANTENNA UNIT
1.
Radiator: Slotted waveguide array
2.
Radiator length: 55 cm
3.
Horizontal beamwidth: 4°
4.
Vertical beamwidth: 25°
5.
Sidelobe:
Within
+
20° off mainlobe; less than -18 dB
Outside
+
20° off mainlobe; less than -23 dB
6.
Polarization: Horizontal
7.
Antenna rotation speed: 24 rpm (
+
2)
8.
Wind resistance: Relative wind speed 100 knots (51.5 m/s)
TRANSCEIVER MODULE (contained in radome)
1.
Transmitting tube: MSF1421B or MAF1421B
2.
Frequency: 9410 MHz
+
30MHz
3.
Peak output power: 4kW nominal
4.
Pulselength
&
pulse repetition rate:
0.08
µ
S, 2100 Hz (0.125, 0.25, 0.5, 0.75, 1.5nm)
0.3
µ
S, 1200 Hz (1.5, 2, 3nm)
0.8
µ
S, 600 Hz (3, 4, 6, 8, 12, 16, 24, 36nm)
5.
Warm up time: 1:30 minutes
6.
Modulator: FET switching method
7.
I.F.: 60MHz
8.
Tuning: Automatic or manual
9.
Receiver front end: MIC (Microwave IC)
10.
Bandwidth:
Tx pulselength 0.3
µ
S and 0.08
µ
S: 25MHz
Tx pulselength 0.8
µ
S: 3MHz
11.
Duplexer: Circulator with diode limiter
12.
WIFI module (For KRA-1007W only)
Standard
IEEE802.lln, IEEE802.llg, IEEE802.llb
Channels
1-11
Frequency range
2.4-2.4835G
Transmit power
15~20dBm
- 3-
POWER SUPPLY UNIT
1.
For MDS-12: +/-12VDC external regulated power supply
ENVIRONMENT
1.
Temperature:
Antenna unit; -25°C to + 70 °C
2.
Humidity:
Relative humidity 93% or less at+ 40°C
3.
Compass safe distance:
Standard Compass
Steering Compass
Antenna unit
130cm
95cm
-
10
-
1.
INSTALLATION
This chapter provides the procedures necessary for installation.
Installation mainly consists of the following:
•
sitting and mounting the display unit and antenna unit
•
connection of the signal cable and the power cable
•
establishing the ground
•
checking the installation, and
•
adjustments.
1.1 Antenna Unit Installation Sitting, handling considerations
•
The antenna unit is generally installed either on top of the wheelhouse or on
the radar mast on a suitable platform. Locate the antenna unit where there is
a good all-round view as far as possible, no part of the ship's superstructure
or rigging intercepting the scanning beam. Any obstruction will cause shadow
and blind sectors. A mast for instance, with a diameter considerably less than
the width of the radiator, will cause only a small blind sector, but a horizontal
spreader or crosstrees in the same horizontal plane as the antenna unit would
be a much more serious obstruction; you would need to place the antenna unit
well above or below it.
•
It
is rarely possible to place the antenna unit where a completely clear view
in all direction is available. Thus, you should determine the angular width
and relative bearing of any shadow sectors for their influence on the radar at
the first opportunity after fitting. (The method of determining blind and
shadow sectors appears later in this chapter.)
•
If
you have a radio direction finder on your boat, locate its antenna. Clear the
antenna unit, to prevent interference to the direction finder. A separation of more
than two meters is recommended.
•
To lessen the chance of picking up electrical interference, avoid routing the signal
cable near other onboard electrical equipment. Also avoid running the cable in
parallel with power cables.
•
The compass safe distance should be observed to prevent deviation of the
magnetic compass.
Standard compass
Steering compass
1.3m
0.7m
-
11
-
Typical antenna unit location
Mounting of the MDS-12 Radome
Figure 1-1 Typical antenna unit location
Unpacking the antenna unit
1.
Open the antenna unit packing box carefully.
2.
Unbolt the four bolts at the base of the redone to remove the radome cover.
Bolts
Radome cover
Figure 1-2 Antenna unit
-
12
-
3.
Drill holes in the antenna mounting platform in accordance with the previous
removal of the base mounting map.
Note: the hole is arranged in parallel with the center line of the ship.
4.
Loosen the antenna cover and the base of the 4 screws, carefully remove the cover.
5.
Remove the cable clamping plate by unfastening four screws and removing
a gasket.
6.
Pass the cable through the hole at the bottom of the radome base.
7.
Secure the cable with the cable clamping plate and gasket. Ground the shield
and vinyl wire by one of the screws of the cable clamping plate.
8.
Connect the wire to the Video Processing unit.
(1)
4-pin connector to J18
(2)
RJ45 connector to J12
Figure 1-3 Location of J18/J12
10.
Fix the shield cover. Do not pinch the cable.
Figure 1-4 Antenna Cable Wiring
-
13
-
11.
Loosely fasten the radome fixing bolts. You will tighten them after
confirming the
unit
is working normally.
SHIP'S BOW
CABLE
ENTRY
4-¢12 HOLES
FLAT WASHER
SPRING WASHER
HEX
BOLT/
" ----PLATFORM
Effective
thread length
25mm
Antenna base plate
-10 mm
"'
washer/
\
Spring / Platform
washer
Hex bolt
Apply silicone sealant
Figure 1-5 How to fasten the radome base to the mounting platform
-
14
-
Hex bolt
Apply silicone sealant
Platform
\
Flat
washer
Spring washer
//
Ts-10
mm
Effective
thread length
25mml
Antenna base plate
3. MDS-12 DRAWINGS AND DIMENSIONS
3.1 MDS-12
- -- Front
160
.,
CABLE ENTRY
4-MlO
-----¢604------
SI-TEX
270
l
420
400
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