Safety Symbols To prevent the risk of personal injury or damage to the equipment, the following safety symbols are used to indicate safety-related information. Insure that you clearly understand the meanings of the symbols BEFORE using the equipment. Symbols Used in Manual ! DANGER This indicates a very dangerous procedure that could result in serious injury or death if not performed properly.
For Safety WARNING and CAUTION for Scanner Unit and Antenna ; 1. Do not approach the antenna while it is transmitting. In addition, at inspection never look into the wave guide during transmission. Distance at which RF power density level to become 100 W/m2: Distance at which RF power density level to become 10 W/m2: 2m 6m 2. There is a risk of receiving electric shock if these parts are touched by accident. Only qualified personnel should remove covers on these parts. 1. 2.
Installation Only qualified personnel should install the radar system in order to make sure proper radar performance and operation. To Customers * To always use this equipment at its best condition, we recommend observing the operation and maintenance procedures in this manual from time to time. Further, try to operate the radar in good visibility condition to make comparison between visual impression and the radar picture presentation of the situation you are in.
Contents For safety CHAPTER 1 OVERVIEW......................................................................... 8 1.1 Introduction............................................................................................................8 1.2 Organization of This Manual ................................................................................8 CHAPTER 2 USING RADAR FOR THE FIRST TIME .......................... 9 2.1 What is a radar ?..................................................................
.4 Functions of Soft Keys........................................................................................... 37 5.4.1 Bearing measurement (EBL1) ......................................................................... 37 5.4.2 Bearing measurement (EBL2) ......................................................................... 37 5.4.3 Distance measurement (VRM1)....................................................................... 37 5.4.4 Distance measurement (VRM2)..............................
5.5.3.6 Displaying the target track (TRACK)..........................................................58 5.5.3.7 Enlarging the selected areas (ZOOM) .........................................................59 5.5.3.8 Increasing the sensitivity (S/L) ....................................................................59 5.5.4 SETUP Menu ....................................................................................................60 5.5.4.1 Selecting and setting up the screen mode (WINDOW) ..............
8.8 External dimensions and weight ...........................................................................89 8.9 External connection and function..........................................................................90 APPENDIX 1. 2. 3. 4. 5. 6. 7.
CHAPTER 1 OVERVIEW 1.1 Introduction The RA53/54 represents a compact, high-performance color marine radar that delivers a peak power output of 6 kW(RA53) or 12 kW(RA54) from the antenna and uses a 15-inch color liquid crystal display. In addition to a microcomputer, it incorporates a video signal processing LSI and a newly developed LSI chip exclusively designed for radars, thus providing versatile functionality and high performance. Features 1. A thin display unit incorporating a liquid crystal display.
CHAPTER 2. USING RADAR FOR THE FIRST TIME This chapter describes basic information on radars and explains technical terms used in radar operation for those who are using a radar for the first time. 2.1 What is a radar ? A marine radar is one of the navigation equipment installed on a ship. It emits a radio wave in very high frequency called a microwave from its antenna and receives the reflected radio wave from objects on the sea (e.g., other ships, buoys, and lands).
2.2 Characteristics of Radar Wave Radio waves from the radar propagate while bending slightly along the terrestrial surface. This characteristic varies dependent on the density of the atmospheric air. The sight distance D of a radar generally is said to be approximately 6% longer than the optical sight distance and is calculated using the equation below : D (NM) = 2.22 ( h1 + h2 ) where, h1= antenna height in meters h2= target height in meters Line of sight Radar Radio Wave h1 h2 Earth Fig.
A. Ghost echoes It sometimes happens that one large object near the ship appears at two different bearings. One is the actual echo and other is a ghost echo generated as the wave is re-reflected from the ship's own smokestack or mast. The former appears at the correct distance and bearing on the screen and the latter appears behind the smokestack or mast. This type of false echo is also generated by re-reflection of waves from bridges and quay walls other than the ship itself.
Main beam 3 False sidelobe echoes 1 HU Real echo Side lobes Antenna Fig.2-7 False echoes of radar (Caused by side lobe) D. Distant false echoes caused by duct phenomenon Depending on meteorological conditions, duct phenomenon sometimes occurs in temperature inverting layers of air. In such a case, the wave propagates erratically reaching a location surprisingly far away from the ship.
2.3 Terms Specific to Radar HM(Heading Marker) HM (Heading Marker) This is a line-shaped marker used to indicate the advancing direction of your ship. 0.75 0.25 HU North Mark This marker indicates the north direction. It is a short line approximately 1/6 of the screen size. North Mark Fig.2-9 Heading Marker and North Mark Display modes This refers to a radar's display modes. There are four display modes depending on the direction in which the top of the screen faces with respect to the ship.
Note: Navigation equipment such as a gyrocompass or magnet compass must be connected to your radar system before it can be operated in NU, CU, and TM modes. (Refer to Section 3.9 for details on how to connect your radar to navigation equipment.) VRM (Variable Range Marker) This is a circular-shaped marker whose size can be changed as desired. You can use this marker when you want to examine the distance of an echo from your ship.
STC (Sensitivity Time Control) Since echo signals received by the radar are strong when they are coming from a short distance, it is difficult to compare signal strength between each reflected signal. To overcome this difficulty, signal strength is adjusted in such a way that the received signal levels coming from a short distance are lowered and those from a long distance are raised. This function should prove useful when there are large reflected waves from sea surfaces during rough weather.
CHAPTER 3. INSTALLATION This chapter describes procedures for installing the RA53/54 radar in your ship and precautions to be observed during installation. Follow the procedure below to install the radar. Checking contents of your package Checking power supply voltage Determining place of installation Installing scanner unit Installing display unit Connecting cables Adjustment Connecting external equipment When discarding Your radar 3.
Tab.3-1 Optional Interconnecting Cable Cable length 15m 20m 30m RA53/RA54 Product No. 242J159098B 242J159098C 242J159098D In addition to the above components included with your package, the following items are also required. Please prepare them separately. Item Tapping screw or M5 bolt and nut Grounding wire Grounding wire and crimp terminal QTY 6 sets 1 1 set Remarks To install display unit Earth line for display unit Earth line for scanner unit 3.2 Checking Power Supply Voltage 3.2.
3.3 Determining Place of Installation 3.3.1 Scanner unit A radar's target detection capacity varies greatly depending on the position of the scanner. An ideal position is a location high above the ship's keel line where there is no obstacle all around the scanner. In an actual ship, such an ideal location is limited by various factors. To comply with FCC RF exposure requirements, the radar antenna for this scanner must be installed to provide a separation distance of 80 cm or more from all persons.
3.3.3 Shifting away from obstacles 1. Shifting from keel line By shifting the scanner position from the keel line to the starboard side of the ship, it is possible to move shadow zones to the port side which makes it possible to keep vision clear in the bow direction. The distance to be shifted can be obtained by calculation depending on the distance from the scanner to obstacles using the following equation: Ls=0.4R+D/2 [m] (when R<15m) Ls=0.
3.4 Installing Scanner Unit When you have decided the place of installation, install the scanner unit. If a mount base like the one shown below is available, it may be easier to install the scanner. If such a mount base is not available in your ship, you may install the scanner directly to the roof, etc. In such a case, pay attention to the water drain tube located at the bottom of the scanner unit during installation.
Double nuts Spring washer Washer Scanner base Mount base M12 Hexagonal bolt Fix four screws Fig.3-5 Fixing Scanner Unit Tab.3-5 Bolts for Mounting Scanner Unit Thickness of mount base 1-4mm(0.04-0.16 in.) 4-9mm(0.16-0.35 in.) 9-14mm(0.35-0.55 in.) 14-19mm(0.55-0.75 in.) Bolts necessary to fix scanner M12 x 45 (1.5mm pitch) M12 x 50 (1.5mm pitch) M12 x 55 (1.5mm pitch) M12 x 60 (1.5mm pitch) Material Stainless Stainless Stainless Stainless Remarks Included with radar 3.
3.6 Installing Display Unit After you have finished installing the scanner unit, install the display unit in the same way. Choose the proper bolt length according to the thickness of the surface on which you are going to install the display unit. Hole diameter is different using bolts from using tapping screw. When using tapping screw, open holes in adequate holes. When using bolts and nuts, open holes in diameter of 6 mm (0.24 in.).
ƒ Remove the two bolts securing the transceiver; pull out the transceiver after removing two connectors.(to Motor(J5), to Heading switch (J3) ) „ Remove the four bolts securing the fixing plate at the cable entrance. … Remove the metal fixing plate, rubber seal and washer that secure the cable. Pass the cable through as shown in the diagram below; replace the above items and tighten the bolts. † Return the transceiver to its original position and secure it with the removed bolts.
3.7.2 Grounding wire ! WARNING Connect grounding wire before connecting power supply cable. Leakage current is too high. Connect grounding wire from the grounding terminal on the rear panel of the display unit to the ship's hull as shown below. Fig.3-10 Grounding display unit to earth Connect grounding wire from one of the bolts you have attached when installing the scanner unit to the ship's hull as shown in Fig.3-11. (The crimp terminal and grounding wire are not included with the radar equipment.
3.7.3 Power supply cable Power is fed through a knife switch ( or circuit breaker) and protective fuses, as shown in below. Main switch panel (Knife Switch with Fuses) WARNING: Do not apply over 41.6V to Radar or Radar may be broken. Generator Switchboard Charger Storage Battery 12/24V Radar Display Unit DC voltage reference points Fit the power supply cable (included with your radar) to the receptacle labeled "POWER" on the rear panel of the display unit. And connect to power supply as follows.
3.9 Connecting External Equipment to Display Unit The display unit has two channels of NMEA input. One is standard in power cable. The other is necessary to connect optional parts (Junction box with OPTION cable). OPTION connector is located at display’s rear panel for connecting external equipment such as a GPS, LORAN, or gyro compass. You must have a Junction box with OPTION cable. (Refer to CHAPTER 8 (4) External interface.) Note: SIN/COS and MOB signals cannot be used on Junction Box.
(1) Installation Place of Radar The display unit, scanner unit and inter-unit connection cable should be located apart from the main unit, feeder, antenna coupler and antenna of radio equipment as far as possible. Especially, proper installation of the feeder, antenna coupler and antenna of radio equipment is very important to improve EMI trouble. (2) Laying Power Supply Cables Following connections A and B are recommended to reduce conduction noise generated from radar. Connection C should not be used.
