Anritsu 6DXRA775UA Marine Radar RA775UA User Manual 0 TITLE
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RA775UA Marine Radar Instruction Manual 2nd Edition • Read this manual before using the equipment. • Keep this manual. Communication Systems Division Information & Communications Group ANRITSU CORPORATION Document : E-A775UA-2-01 Safety Symbols To prevent the risk of personal injury or damage to the equipment, Anritsu Corporation uses the following safety symbols 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. WARNING This indicates a hazardous procedure that could result in serious injury or death if not performed properly. CAUTION This indicates a hazardous procedure or danger that could result in light-to-severe injury, or that might damage the equipment, if proper precautions are not taken. Safety Symbols Used on Equipment The following safety symbols are used inside or on the equipment near operation locations to provide information about safety items and operation precautions. Insure that you clearly understand the meanings of the symbols and take the necessary precautions BEFORE using the equipment. This indicates high voltages with a risk of serious electric shock if the part is touched. NEVER touch the part with bare hands, etc. The symbol prohibits the operation shown inside the symbol. (The example in the left prohibits disassembly.) The symbol indicates that the operation inside the symbol is potentially hazardous. (The example on the left indicates that the plug should be held when disconnecting it from the AC outlet.) This indicates the ground (earth) terminal. If the equipment cannot be grounded via the power cord, connect this terminal to ground. There is a risk of serious electric shock if the equipment is not grounded. RA775UA Marine Radar Instruction Manual 25th Aug. 1999 (2nd Edition) 14th July. 1999 (1st Edition) Copyright © 1999, ANRITSU CORPORATION. All right reserved. No part of this manual may be reproduced without the prior written permission of the publisher. The contents of this manual may be changed without prior notice. Printed in Japan For Safety ① ② ! ③ ④ WARNING ・ サービスマン以外はふたを開けないでください。 感電するおそれがあります。 ・作業前に主電源を切って下さい。 回転しているアンテナでけがをするおそれがあります。 ・ 送信中に近付かないでください。 放射レベル : 10W/m2 距離 : 1.8m ・ カバーなどを落下させないでください。 下にいる人が危険です。 ・DO NOT OPEN THE COVER EXCEPT SERVICE PERSONNEL. YOU MAY GET AN ELECTRIC SHOCK. ・SWITCH OFF SHIPS MAIN BEFORE MAINTENANCE. ROTATING ANTENNA MAY HIT YOU. ・ KEEP OFF DURING TRANSMISSION. RADIATION LEVEL: 10W/m2 DISTANCE : 1.8m ・ DO NOT DROP COVER. IT MAY HIT SOMEBODY. ! 警 告 CAUTION 注 意 ・ レドームにはペンキを塗らないでください。 性能が落ちます。 ・DO NOT PAINT THE RADOME. PERFORMANCE WILL DOWN. ⑤ • There is a risk of receiving electric shock if these parts are touched by accident. Only qualified personnel should remove covers on these parts. ‚ To avoid accidental antenna rotation, turn off ship’s main and pull off out the motor fuse during repair inspect, or maintenance. When repairing or inspecting the scanner unit wear a safety harness and provide a secure platform so that there is no danger of falling even when the vessel lists or when there is an unexpected incident such as an earth quake. ƒ Do not approach the antenna while it is transmitting. In addition, at inspection never look into the wave guide during transmission. „ When remove the scanner cover etc., do not drop it. It may endanger people below. … Do not paint the RADOME. Antenna performance will be down. ii ① ! WARNING 警 告 ② ・ SEE INSTRUCTION MANUALS BEFORE CONNECTING POWER. SAFETY INFORMATION IS WRITTEN IN. ・ 電源接続する前に、必ず取扱 説明書を読んでください。 安全情報が記載されています。 ③ ・ EARTH CONNECTION ESSENTIAL BEFORE CONNECTING POWER. YOU MAY GET AN ELECTRIC SHOCK. ・ 電源接続する前に、アース接続 を行ってください。 感電のおそれがあります。 ・ DO NOT OPEN THE COVER EXCEPT SERVICE PERSONNEL. HIGH VOLTAGE IS INSIDE. YOU MAY GET AN ELECTRIC SHOCK. ・ サービスマン以外は、ふたを 開けないでください。 高圧部分があり、感電のおそれ があります。 • See instruction manuals before connecting power. Safety information is written in. ‚ Earth connection essential before connecting supply. There is a risk of serious electric shock if the equipment is not grounded. ƒ There is a risk of receiving electric shock if these parts are touched by accident. Only qualified personnel should remove covers on these parts. iii Installation Radio laws dictate that this radar may only be installed by properly licensed personnel. Licensing You must obtain a license as prescribed by the Radio Law to operate this unit. Exporting According to the sales agreement with your distributor, this product is for use only within your country. When taking it overseas, there may be cases where you must obtain export permission. Contact Anritsu Corporation or one of our dealers as soon as possible if you are planning to take the product out of your country. Equipment Certificate Anritsu Corporation certifies that this equipment was tested before shipment, to meet recognized standards. Warranty Anritsu Corporation warrants this equipment to be manufactured in accordance with published specifications and free from defects in materials and/or workmanship. Anritsu Corporation will repair or exchange any parts except consumable parts proven to be malfunctioning under normal use for a period of two (2) years. This warranty policy shall not cover any labor charge. Limitation of Warranty Anritsu Corporation’s warranty policy does not apply to product which has been subjected to accident, abuse, or misuse, shipping damage, alterations, corrosion, incorrect and/or unauthorized service or modification, or product which the serial number plate has been altered or removed. ANRITSU CORPORATION MAKES NO WARRANTIES, EITHER EXPRESS OR IMPLIED, EXCEPT AS PROVIDED HEREIN, INCLUDING WITHOUT LIMITATION PARTICULAR PURPOSE OR USE, OR AGAINST INFRINGEMENT OF ANY PATENT. IN NO EVENT SHALL ANRITSU BE LIABLE FOR ANY DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE, OR LOSSES OR EXPENSES RESULTING FROM ANY DEFECTIVE PRODUCT OR THE USE OF ANY PRODUCT. Should you have queries about maintenance, please contact our distributor. To Customers * To use this equipment effectively, the operation and maintenance procedure in this manual must be followed properly. Note that this equipment is only a navigational instrument having no warrant for navigation safety. Non-execution of fundamental navigation requirements such as the ship location check or lookout is not allowed. * If some abnormality occurs in this equipment, immediately turn off the equipment POWER switch and the radar main switch in the power distribution board and notify our maintenance section or dealer. * This instrument uses oscillator and LCD backlight. They are easy to be broken. Do not subject the instrument to excessive force or drop it. * The mercury (Hg) is used in LCD backlight. When you discard your radar, it is due to laws or regulations of your nations. iv Contents For safety CHAPTER 1 OVERVIEW ................................................................................. 1 1.1 Introduction....................................................................................................... 1 1.2 Organization of This Manual ............................................................................ 1 CHAPTER 2 USING RADAR FOR THE FIRST TIME................................... 2 2.1 What is a radar ? ............................................................................................... 2 2.2 Characteristics of Radar Wave.......................................................................... 3 2.3 Terms Specific to Radars................................................................................... 6 CHAPTER 3 INSTALLATION ......................................................................... 10 3.1 Checking Contents of Your Package................................................................. 10 3.2 Checking Power Supply Voltage ....................................................................... 11 3.2.1 Power Supply Requirement ......................................................................... 11 3.2.2 Fuse Replacement ........................................................................................ 11 3.3 Determining Place of Installation..................................................................... 12 3.3.1 Scanner unit ................................................................................................. 12 3.3.2 Display unit .................................................................................................. 12 3.3.3 Shifting away from obstacles ....................................................................... 13 3.4 Installing Scanner Unit .................................................................................... 14 3.5 Installing Display Unit ..................................................................................... 15 3.6 Connecting Cables............................................................................................. 17 3.6.1 Interconnecting cable ................................................................................... 17 3.6.2 Grounding wire ............................................................................................ 19 3.6.3 Power supply cable....................................................................................... 20 3.7 Adjustment ........................................................................................................ 21 3.8 Connecting External Equipment to Display Unit ............................................ 21 3.9 Countermeasure for Electromagnetic Interference .......................................... 22 3.10 When Discarding Your Radar ......................................................................... 23 CHAPTER 4 FUNCTIONS AND NAMES ....................................................... 24 4.1 Key layout ......................................................................................................... 24 4.2 Rear panel ......................................................................................................... 25 4.3 Radar screen (Single screen)............................................................................. 25 4.4 Radar screen (Dual screen) ............................................................................... 26 4.5 Radar screen (All PPI screen) ........................................................................... 26 4.6 Radar screen (All PPI/PPI screen) .................................................................... 27 4.7 Navigation screen.............................................................................................. 27 CHAPTER 5 OPERATION ............................................................................... 28 Basic operation of Radar ......................................................................................... 28 5.1 Powering On and Off......................................................................................... 28 5.2 Adjusting contrast and brilliance of the screen, and key-backlight................. 28 5.3 Basic Operations ............................................................................................... 29 5.3.1 Powering On and Off.................................................................................... 29 5.3.2 Transmitting ................................................................................................ 29 5.3.3 Adjusting contrast and brilliance of the screen, and key-backlight ............ 30 5.3.4 Changing Distance Range (RANGE UP, RANGE DOWN) ......................... 30 5.3.5 Automatic adjustment (AUTO).................................................................... 30 5.3.6 Sensitivity adjustment (GAIN)..................................................................... 31 5.3.7 Removing sea clutter (STC) .......................................................................... 31 5.3.8 Removing rain and snow clutter (FTC) ........................................................ 32 5.3.9 Man Over Board (MOB)............................................................................... 32 5.4 Functions of Soft Keys ...................................................................................... 33 5.4.1 Bearing measurement (EBL1) ..................................................................... 33 5.4.2 Bearing measurement (EBL2) ..................................................................... 33 5.4.3 Distance measurement (VRM1)................................................................... 33 5.4.4 Distance measurement (VRM2)................................................................... 34 5.4.5 Measuring the angle between two points (FL EBL2).................................. 34 5.4.6 Measuring the distance between two points (FL VRM2)............................ 34 5.4.7 Changing the group of Soft Keys(NEXT) .................................................... 35 5.4.8 Erasing heading maker temporarily (HDG OFF) ....................................... 36 5.4.9 Using parallel cursors (///CSR) .................................................................... 36 5.4.10 Establishment of the indication of the RANGE RINGS (RINGS) ............. 36 5.4.11 ON/OFF of variable range function (VAR RNG) ....................................... 36 5.4.12 Changing display modes (MODE).............................................................. 36 5.4.13 Guard Zone (GZ) ........................................................................................ 36 5.4.14 Off Center (OFF-C) .................................................................................... 37 5.4.15 Setting of the SLEEP function(SLEEP)..................................................... 38 5.4.16 Tuning adjustment (TUNE)....................................................................... 38 5.4.17 Echo expansion (ST)................................................................................... 39 5.4.18 Displaying locus of target (TRACK)........................................................... 39 5.4.19 Enlarging selected areas (ZOOM).............................................................. 39 5.4.20 Increasing sensitivity (S/L) ........................................................................ 40 5.4.21 Switching the screen (SEL WIN) ............................................................... 40 5.4.22 Reversing the screen (PICTURE) .............................................................. 40 5.4.23 Change to PPI screen (PPI) ....................................................................... 41 5.4.24 Change to SEMI3D/PPI screen (SEMI3D) ................................................ 41 5.4.25 Change to PPI/PPI screen (PPI/PPI) ......................................................... 41 5.4.26 Change to PPI/NAV screen (PPI/NAV)...................................................... 42 5.4.27 Change to ALL PPI screen (ALL PPI) ....................................................... 42 5.4.28 Change to ALL PPI/PPI screen (ALL PPI2) .............................................. 42 5.5 MENU Operation.............................................................................................. 43 - List of MENU.................................................................................................... 43 5.5.1 Mark Menu .................................................................................................. 44 5.5.1.1 Bearing measurement (EBL1) ................................................................. 44 5.5.1.2 Determining the distance (VRM1)........................................................... 45 5.5.1.3 Bearing measurement (EBL2) ................................................................. 45 5.5.1.4 Determining the distance (VRM2)........................................................... 45 5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 ) ......................................45 5.5.1.6 Measuring the angle between two points (FL EBL2).............................. 46 5.5.1.7 Erasing heading maker temporarily (HDG OFF) ................................... 47 5.5.1.8 Using parallel cursors (///CSR) ................................................................ 47 5.5.1.9 Establishment of the indication of the RANGE RINGS (RINGS) ........... 48 5.5.1.10 Variable range function ( VAR RNG ) ................................................... 48 5.5.1.11 Output the position data of Cursor (TARGET)...................................... 49 5.5.1.12 Follow the Distance and Bearing marker on the cursor (+MK LINE).. 49 5.5.2 Nav (Navigation) Menu ................................................................................ 50 vi 5.5.2.1 Changing display mode (MODE) ............................................................ 50 5.5.2.2 Guard Zone (GZ) ...................................................................................... 51 5.5.2.3 Shifting display in specific direction (OFF-C).......................................... 52 5.5.2.4 Setting of the SLEEP function(SLEEP)................................................... 52 5.5.3 Echo Menu...................................................................................................... 54 5.5.3.1 Sensibility adjustment (GAIN)................................................................. 54 5.5.3.2 Removing sea clutter (STC)...................................................................... 55 5.5.3.3 Removing rain and snow clutter (FTC).................................................... 55 5.5.3.4 Adjusting receiver tuning (TUNE)........................................................... 55 5.5.3.5 Echo expansion (ST) ................................................................................. 55 5.5.3.6 Displaying locus of target (TRACK) ........................................................ 56 5.5.3.7 Enlarging selected areas (ZOOM) ........................................................... 57 5.5.3.8 Increasing sensitivity (S/L) ...................................................................... 57 5.5.4 SETUP Menu ............................................................................................... 59 5.5.4.1 Initiating the screen display (WINDOW) ................................................ 59 - The limitation of the screen operation .............................................................. 60 - Screen modes and Operations ........................................................................... 60 (a) PPI Screen ............................................................................................. 60 (b) PPI/SEMI3D Screen .............................................................................. 61 (c) PPI/PPI Screen....................................................................................... 61 (d) PPI/NAV Screen .................................................................................... 62 (e) ALL PPI Screen ..................................................................................... 62 (f) ALL PPI/PPI Screen............................................................................... 62 (g) MOB Screen........................................................................................... 63 5.5.4.2 Switching screens on PPI/PPI screen (SEL WIN) ................................... 63 5.5.4.3 Reversing the screen (PICTURE) ............................................................ 63 5.5.4.4 Fault Diagnosis by Self Check (SYSTEM CHECK)................................. 64 5.5.4.5 Changing the content of the setting (CUSTOM) ..................................... 66 5.5.4.5.1 Changing the settings of soft keys (KEY ASSIGN) ............................. 67 5.5.4.5.2 Changing the content of settings 1(PRESET1).................................... 69 5.5.4.5.3 Changing the content of settings 2 (PRESET2)................................... 71 5.5.4.5.4 Changing the content of settings (ADJUSTMENT)..............................73 (1) Adjusting distance (TIMING ADJ) ......................................................73 (2) Adjusting angle (HEAD ADJ) ..............................................................73 (3) Adjusting tuning circuit (TUNING CAL) ............................................74 (4) Adjusting antenna height (ANTENNA)...............................................75 (5) Setting automatic gain circuit (AUTO GAIN) .....................................76 (6) Setting automatic STC circuit (AUTO STC)........................................76 (7) Setting HARBOR STC circuit (HARBOR) ...........................................76 CHAPTER 6 MAINTENANCE AND INSPECTION....................................... 77 CHAPTER 7 TROUBLESHOOTING ............................................................... 79 7.1 Fault Diagnosis by Self-check ........................................................................... 79 7.2 Inspecting Each Part......................................................................................... 80 CHAPTER 8 PRODUCT SPECIFICATIONS .................................................. 81 8.1 General ...............................................................................................................81 8.2 Scanner Unit ......................................................................................................82 8.3 Display Unit .......................................................................................................82 vii 8.4 External Interface.............................................................................................. 83 8.5 Standard set ....................................................................................................... 83 8.6 Options ............................................................................................................... 84 8.7 External dimensions and weight ....................................................................... 84 8.8 External Interface.............................................................................................. 84 APPENDIX 1. 2. 3. 4. 5. 6. 7. GENERAL SYSTEM DIAGRAM 24W160941 INTERCONNECTION DIAGRAM 24W160939 OUTLINE DRAWING DISPLAY UNIT 23W72646 OUTLINE DRAWING SCANNER UNIT 23W68739 FLUSH MOUNT PROCEDURE TEMPLATE OF SCANNER MOUNTING HOLES (ACTUAL SIZE) INDEX viii CHAPTER 1 OVERVIEW ●1.1 Introduction The RA775UA represents a compact, high-performance marine radar that delivers a peak power output of 2 kW from the antenna and uses an 10-inch monochrome 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. 2. Easy operation using only a few keys and menu screens. 3. A position of key and its function can be set in position ( Selectable soft function key). 4. Easy operation by the rotary knob. Gain, STC, FTC, EBLs, VRMs etc. can be controlled by the rotary knob. 4. A short and a long range echo can be seen at a time ( Dual range radar). 5. Semi-3D screen display for easy identification of targets in noise. 6. Capable of continuous distance range changes (Continual variable range). 7. Waterproof construction of display allows installation at any desired location. ●1.2 Organization of This Manual This manual provides a wide range of information necessary to operate the RA775UA radar ranging from the basic knowledge on radars to the methods of operating, installing, and maintaining the RA775UA radar. The manual also provides rather detailed technical information on how to adjust video display to obtain clear images. Anritsu recommends you to read this manual thoroughly from beginning to end in order to understand the various functions of the RA775UA radar so you can take full advantage of its advanced functions. If you are using a radar for the first time, refer to the basic data on radars in CHAPTER 2. This manual consists of the following chapters: USING RADAR FOR THE FIRST TIME INSTALLATION FUNCTIONS AND NAMES OPERATION INSPECTION AND MAINTENANCE TROUBLESHOOTING PRODUCT SPECIFICATIONS ...................... ...................... ...................... ...................... ...................... ...................... ...................... CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 CHAPTER 8 If you are an experienced user of radars, skip CHAPTER 2 and begin from CHAPTER 3. 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 is 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). The received radio wave is converted into an electric signal which is displayed on a display screen to indicate the presence of such objects. Although it is very difficult to find other ships or the destination coast with human eyes at night or in thick fog, a radar helps you detect objects on the sea helping you avoid danger when sailing. The antenna turns 360 degrees as it radiates waves, allowing you to grasp ambient conditions around your ship at a glance. The radio wave radiated from the antenna is called a pulse wave and the radar performs transmission and reception alternately. Several hundred to several thousand pulse waves generally are transmitted while the antenna rotates one turn. Buoy Other ship Radar wave Your ship Radar display Antenna (Rotating) Fig.2-1 What is a radar? Antenna There are many types of antennas generally used for a radar. For example, these include a parabolic antenna and a slotted-array antenna. The performance of the antenna determines that of the radar. The dominant factors are the antenna's beam width and side lobe level. The narrower the beam width, the higher the resolution of the angle direction. The lower the side lobe level, the fewer the effect of a false echo. Side lobe level Beam width Main beam Side lobe Side lobe A beam in one direction in which the strongest radio wave is radiated from the antenna is called the main lobe and beams in other directions are called "side lobes". The side lobe level refers to the difference in level between the largest side lobe and the main lobe. Antenna Fig.2-2 Antenna pattern Beam width A beam width is defined as the width of the main lobe at an angle where the radiated power is halved as measured from the position from which the strongest radio wave is radiated. ●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.2-3 Radar wave Targets difficult to display on screen The intensity of the reflected wave from a target depends on the distance, height, and size of the target, as well as its material and shape. Targets constructed with FRP, wood, or other low-reflectance materials or those that have a small incident angle are difficult to display on a screen. Therefore, FRP and wooden ships, sandy beaches, and sandy or muddy shallows all are difficult to catch and require attention when monitoring on the screen. Especially, coast lines on the radar image appear to be present more apart from the ship than they are actually located. Therefore, it is important not to misinterpret the available data. Invisible Apparent coastline Visible HU Actual(invisible) coastline Fig.2-4 Targets difficult to display on screen Shadow zones of radar Radar waves are characteristic in that they propagate straight ahead. Therefore, if the ship's smokestack or mast is located near the antenna or there is a tall ship or mountain at the side of the ship, such an object generates a shadow behind it. In this case, some objects produce a complete shadow and some produce a partial shadow. In an extreme case, the shadow of an object may extend to a position far away and cannot be displayed on the screen at all. Since these shadows can be discovered when installing an antenna, the problem can be avoided by changing the place of antenna installation to minimize the shadow. Targets in shadow zones are difficult to display on the screen. False echoes A false echo of an actually nonexistent object may sometimes appear on the screen when sailing. The following explains the cause of each of such phenomena. 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. Target Direct reflection path 1 HU Real echo Secondary reflection path Ghost echo Mast etc. Direction of ghost echo Fig.2-5 False echoes of radar (Ghost echoes) B. Multiple echoes If there is a large vertical reflecting plane near the ship as in the case when your ship passes alongside a large ship, the wave is repeatedly reflected back and forth between your ship and the other object. For this reason, two to four images appear on the screen at equal intervals in the same bearing. A false echo that is generated by such multiple reflections is called multiple echoes. In this case, an image appearing at the nearest position is the real echo. Multiple echoes disappear as the ship moves away from the reflecting object or its bearing changes. Therefore, it is not difficult to determine the correct image. 3 HU Real echo Multiple echoes Fig.2-6 False echoes of radar (Multiple echoes) C. False echoes caused by side lobe The radiant beam emitted from an antenna contains side lobes in directions other than that of the main beam. Since the side lobe level is low, it in no way affects distant targets. However, if there is a strong reflecting target near the ship, it sometimes appear as a circular-arc false echo on the screen. CAUTION When located near large targets such as land, the ship's mast, etc. sometimes appears as a false echo of circular-arc shape. Main beam 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. In this case, a target present at a distant location more than the radar's maximum distance range appears on the screen presenting a false echo that can be misunderstood to be present nearer than the actual position. This phenomenon is attributed to the fact that since echo from the distant target arrives late, it gets out of the pulse repetition frequency and is displayed on the screen as an echo in the next frequency. If the target distance changes as you switch over the distance range, you can determine that it is a false echo. Radar inrterference Radar interference If a radar operating in the same frequency exists near your ship, interference noise may appear on the screen that is caused by transmitted waves from that radar. This interference appears in various ways. In most cases, however, it appears as spiral or radial patterns. The RA775UA radar has a function to eliminate interference. Use of this function helps you minimize interference. 1 HU Fig.2-8 Radar interference ●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. Ship's Heading HM Ship's locus (not displayed on screen) Scheduled course Scheduled course North North 0.75 0.75 0.75 0.75 0.25 HU 0.25 NU 0.25 CU 0.25 TM North mark North EBL HU NU CU TM Fig.2-10 Display modes Head Up (HU) In this mode, the ship's heading always indicates the upward direction of the screen. This mode lets you know the relative positions of your ship and other ships or land. North Up (NU) In this mode, the north direction always indicates the upward direction of the screen, allowing you to compare your ship position with a marine chart as you navigate. Course Up (CU) The ship's heading in a course-up mode always indicates the upward direction of the screen as the bearing toward the destination. In this mode, the ship can be maneuvered to sail the shortest distance to the destination by steering it in such a way that its heading marker always directs to the upward direction of the screen. If the ship drifts due to tidal current, care must be taken because the fixed targets move to other positions. True Motion (TM) In this mode, the ship is displayed as if it is moving on a marine chart while the fixed targets such as islands and seashores are fixed in position. When the ship reaches a certain position on the screen (approx. 2/3 of screen size), the ship is placed back to the opposite side on the screen. (The top of the screen faces north.) 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. When measuring the distance of an echo from your ship, be sure to measure at a point close to the center of the echo image on the screen. 0.75 0.25 HU Echo VRM VRM Fig.2-11 VRM EBL (Electronic Bearing Line) This is a marker shaped like a straight line segment that can be changed to any direction centering around the ship position. Use this marker to examine the advancing direction of your ship and its relative angle with an echo. When measuring the angle of an echo, position the marker at the center of the echo. Equal intervals 0.75 0.25 HU EBL Echo EBL Fig.2-12 EBL 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. STC OFF STC ON 0.75 0.75 0.25 HU 0.25 HU Echo is suppressed around center Fig.2-13 STC FTC (Fast Time Constant) When it rains or snows, fine noise may appear over the entire screen, making it difficult to identify echoes. In such a case, echo images on the screen can be made easily distinguishable by adjusting FTC. FTC OFF FTC ON 0.75 0.75 0.25 HU 0.25 HU Small noises are reduced. Fig.2-14 FTC CHAPTER 3. INSTALLATION This chapter describes procedures for installing the RA775UA 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 ●3.1 Checking Contents of Your Package First, unpack your package and see if all of the following items are included. Item Display unit Scanner unit Display cover Fuse Interconnecting cable Power supply cable M10 hexagonal bolt QTY 1 (RF718A) 1 (RB714A) 1 (10 m) 1 (2 m) 4 sets The package contains a 10m interconnecting cable as an accessory. Longer cable is also available as an option as listed in Tab.3-1. 10 Tab.3-1 Optional Interconnecting Cable Cable length 15m 20m 30m Ordering Product No. 242J160680B 242J160680C 242J160680D 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 set Remarks To install display unit Earth line for display unit Earth line for scanner unit ●3.2 Checking Power Supply Voltage 3.2.1 Power Supply Requirements For the RA775UA radar to be operated normally, the power supply (battery) detailed in Tab.3-2 is required. Note also that if the battery is discharged, its voltage may fluctuate greatly, causing the radar to malfunction. When start up the radar system or start transmitting, an additional rush current is required on the power line. Carefully check the power supply system including wiring by using a circuit tester. Tab.3-2 Power Supply Requirements Supply voltage used Maximum current Allowable range of voltage DC12V 5A 10.2-41.6V DC24V 2.5A 10.2-41.6V *A.C. power cannot be used 3.2.2 Fuse Replacement For the RA775UA radar to be operated safely, proper rating fuses must be used. Tab.3.3 is the fuse rating table. Please check them and replace to the fuse in the package. Tab.3-3 Supply Voltage to Fuse Table Supply voltage used DC12V DC24V Main Fuse 8A/250V or 125V * (6.3Φ x 32mm) 8A/250V or 125V (6.3Φ x 32mm) Note: Marked * fuses are in the set as standard. 11 Motor Fuse T3.15A/250V or 125V * (5Φ x 20mm) T3.15A/250V or 125V (5Φ x 20mm) ●3.3 Determining Place of Installation 3.3.1 Scanner unit A radar's target detection capacity varies greatly depending on the fitted position of the scanner. An ideal fitting 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. Therefore, consider the following suggestions when you determine the place to install the scanner: (a) Install scanner at a position as high as po ssible. The higher the installation position, the longer the radio ranging distance. Install the scanner at a position as high as possible after considering the ship's hull structure and radar maintainability. (b) Install scanner away from smoke-stack and mast If the scanner is installed at the same height as the smoke-stack or mast, radar waves may be blocked, creating shadow zones or generating false echoes. Therefore, do not install the scanner at such a position. (c) Install scanner forward away from obstacle. To avoid creating shadow zones or generating false echoes, install the scanner at a position nearer to the ship's bow away from obstacles. When installing the scanner on a mast, position it in front of the mast. (If obstacles cannot be avoided for the ship's structural reasons, refer to "Shifting away from obstacles" described Page 13.) (d) Do not install the scanner near hot or heat-generating items. Do not install the scanner at a position where it may be subjected to smoke or hot air from smokestacks or heat from lamps. (e) Install the scanner away from antennas of other equipment. Install the scanner as much away from the antennas of a direction finder, radio transceiver, etc. as possible. CAUTION To eliminate the interference, install the scanner away from the antenna of radio transceivers. (f) Make the cable length as short as possible. Keep the distance from the scanner to the display unit within the standard cable length of 10 m. If you use longer cable for unavoidable reasons, limit the cable length to a maximum of 30 m. 3.3.2 Display unit The display unit can be installed on desktop, wall surface, or ceiling. Determine the place to install the display unit that is convenient for navigation and radar operation after considering the following suggestions: (a) A place where you can see the ship's bow when you raise your face f rom the radar screen. (b) A place where there is no direct sun-light to avoid display temperature up. (c) A place where there is good ventilation and minimum v ibration. (d) A place where the display unit is apart more than the minimum safe distance from a magnet compass as listed in Tab.3-3 below. Tab.3-5 Minimum Safe Distance from Magnetic Compass Scanner unit Display unit Master compass 2.0m 2.0m 12 Steering compass 1.4m 1.4m 3.3.3 Shifting away from obstacles • 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 clear vision 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=0.025R+D/2 [m] (when R>=15m) where Ls = distance to be shifted from keel line D = diameter of obstacle on keel line R = distance from scanner to obstacle Scanner Unit Obstacle Ls Keel line Fig.3-1 Shifting from keel line ‚ O btaining sufficient dip angle Raise the scanner position so that there is a sufficient dip angle θ available between the line of sight from the scanner to the obstacle and the horizontal line. By raising the dip angle above 5°, it is possible to prevent mid- and long-distance shadow zones. The radar cannot detect objects below the line of sight. Horizontal line θ Line of sight Fig.3-2 Obtaining sufficient dip angle 13 ●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. Note : When the radar mast or mounting bracket has a curvature of more than 2mm, repair it or use spacers. Do not use an edge that might trap water. Fig.3-3 Mount base Referring to Fig.3-4, open holes in diameter of 12 mm (0.47 in.) at five locations in the mount base and use these holes to fix the scanner unit to the mount base with hexagonal bolts. (Use the template included with this manual.) The bolts included with your radar equipment will suffice for mount base thickness of 9 to 14 mm (0.35 to 0.55 in.). If the mount base is thicker or thinner than this, prepare bolts listed in Tab.3-4. Use sealing of silicon when you prevent the bolts from becoming loose. Radome may be broken if you use locking putty. Forward 12φ × 5 140 (0.47 in.) (5.51 in.) 60 140 (2.36 in.) Center (5.51 in.) 30 (1.18in.) For air tube Fig.3-4 Hole positions for mounting scanner 14 Chassis Radome(bottom) Mount base Washer Spring washer Included M10 Hexagonal bolt Fix four screws Fig.3-5 Fixing Scanner Unit Tab.3-6 Bolts for Mounting Scanner Unit Bolts necessary to fix radome scanner M10 × 15 (1.5mm pitch) M10 × 20 (1.5mm pitch) M10 × 25 (1.5mm pitch) M10 × 30 (1.5mm pitch) 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.) Material Stainless Stainless Stainless Stainless Remarks Included with radar ●3.5 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.). When you have opened holes, install the pedestal part first and then the display unit. Fitting hole 360 (14.17 in.) Hole diameter 6mm : Bolts and Nuts 47 (1.85 in.) Adequate : Tapping screws 84 (3.31 in.) 37 (1.46 in.) Recommended screw 60 240 60 (2.36 in.) (9.45 in.) (2.36 in.) M5 or equivalent Unit : mm Forward Fig.3-6 Hole positions for display unit 15 Note : When you install the display by flush mount, refer to appendix "OUTLINE DRAWING". Slide off four triangle corner cover, and fix the display unit to the panel with screws. After fixing the display unit, put on corner covers to the corner of the display unit. See APPENDIX. WARNING Avoid a display from operating under direct sunlight. It becomes high temperature at inside of display and display may be broken. 16 ●3.6 Connecting Cables Lay cables firmly in place by following the instructions below. Note1: Do not bind the cable for the radar collectively with cables of other equipment (especially power supply cable). Note2: Leave clearance near the inlet of the display so you can remove the display unit easily. This facilitates installation and maintenance of the display unit. (Refer to Appendix 1.) Note3: Because the cable has a connector fitted on the display and scanner side, if it is necessary to pass cable through a narrow path, fix the scanner-side connector vertically using vinyl tape before passing cable through the path. Note4: Lay cable along the ship's hull or wall surface and attach it in place at intervals of about 40 cm. 3.6.1 Interconnecting cable (See Fig.3-8) • Ensure that the radar is off. Connect the cable to the receptacle labeled "SCANNER" on the rear panel of the display unit. ‚ Next, remove the upper part of the radome from the scanner unit. Avoid bumping it against the antenna by lifting vertically. (There are three fixing screws.) ƒ Remove the tape fixing the antenna. „ Remove the shield cover located on the astern side. (There are three fixing screws.) … Remove the cable clamping plate and rubber ring, pass cable through the introduction opening, put the rubber ring from both ends of it, and clamp the cable to the scanner unit with screws via the fixing plate. Plug the connector fitted to the cable into the X1 connector on the PCB. † Replace the aluminum cover. At this time, attach a cable shield onto a ditch with the aluminum cover. However, be careful that the cable will not be caught up between the main unit and cover. ‡ Replace the upper part of the radome. Be careful not to bump it against the antenna in the same way as when removing it. Make sure that the cover is fitted in the correct direction as shown in Fig.3-7. The upper and lower parts of the radome each have three markings indicating screw positions. Align the upper and lower positions as you mount the radome. Logo seal on side wall Ship's heading Fixing screws Fig.3-7 Fitting cover 17 Antenna Stern side Shield cover Cable shield Radome (bottom) Fixing plate Rubber ring Fix connector on PCB(X1) Interconnecting cable Inner shield X1 (Connect here) PCB Radome (bottom) Fig.3-8 Fitting interconnecting cable 18 3.6.2 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. Grounding wire SCANNER POWER OPTION Grounding terminal 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.) Chassis Radome(bottom) Mount base → To ship's hull Crimp terminal Grounding wire Fig.3-11 Grounding scanner unit to earth 19 3.6.3 Power supply cable low. Power is fed through a knife switch ( or circuit breaker) and protective fuses, as shown in beMain 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 followings. (When you do not connect external equipment, put tape on red and green wire.) Place the Fuse and connection part where there is no water splash and dry area. When extend the power supply cable, use a suitable cable as below. Ship's Power Voltage 12Vdc 24Vdc Cable conductor cross section 3.5 mm2 6.0 mm2 2.0 mm2 3.5 mm2 Red Green Power supply cable To display unit Gray Black White Cable max. length 3m 5m 6m 10 m NMEA+ NMEA- To external equipment Ground DCDC+ To power supply Fig.3-12 Power supply cable ●3.7 Adjustment CAUTION Be sure to operate the following adjustment. If this is not adjusted properly, the radar picture does not display true image. 20 When you have finished installing the scanner and display units and connecting cables, turn on the power to the display and scanner units and check to see if they operate normally without problem. Then make adjustments as detailed below and check to see if the units operate normally again. WARNING Heading direction offsets about 60 degree from scanner heading when shipped from factory. " ‚ HEADING DIRECTION" must be carried out when install the radar. • TUNING ‚ HEADING DIRECTION ƒ DISTANCE Refer to Adjusting tuning circuit in 5.5.4.5.4 Refer to Adjusting angle in 5.5.4.5.4 Refer to Adjusting distance in 5.5.4.5.4 ●3.8 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 an Junction box with OPTION cable separately available from Anritsu. (Refer to CHAPTER 8 (4) External interface.) Note: SIN/COS and MOB signals cannot be used on Junction Box. Junction box with OPTION cable SCANNER (Order No. RZ704A) POWER OPTION POWER cable Junction box* note OPTION cable To power supply Other radar, slave monitor, External buzzer, Gyro I/F Other radar, slave monitor, External buzzer, Gyro I/F, SIN/COS. MOB(NMEA out) External NMEA equipment Green :NMEARed :NMEA+ External NMEA equipment Fig.3-13 Connecting external equipment to display unit 21 ●3.9 Countermeasure for Electromagnetic Interference Anritsu radar provides shields in the units and the inter-unit connection cable. When the radar, however, is closely installed to radio equipment such as VHF transceiver, UHF transceiver, etc., or the radar and/or radio equipment are not sufficiently grounded to the hull or ship's earth, the radar may happen to cause EMI trouble. Followings are general procedures for reducing EMI due to radars. When installing radars, refer to them, and also check the radio equipment EMI trouble with operating the radar and radio equipment. (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. Connection A (Very Good) Connection B (Good) RADAR SHIP'S SUPPLY RADIO EQUIPMENT SHIP'S SUPPLY RADAR SHIP'S SUPPLY RADIO EQUIPMENT Connection C (Bad) SHIP'S SUPPLY RADAR RADIO EQUIPMENT (3) Grounding All equipment should be firmly grounded at the earth nearest hull with copper plates or braided wires. Improvement Procedure for EMI (1) Confirm grounding on the radar and radio equipment. However, some equipment, on which grounding is not always necessarily, have a possibility of EMI improving when taking off their grounding. Try to take off grounding. (2) Confirm power supply cable connections and modify to the connection A or B above. (3) Try to shift the display unit and inter-unit connection cable of radar to be apart from radio equipment. (4) Try to shift the feeder of radio equipment to be apart from each units and the inter-unit connection cable of radar. (5) Try to shift the antenna coupler and antenna of radio equipment to be apart from the scanner unit and inter-unit connection cable of radar. 22 ●3.10 When Discarding Your Radar When discarding your RA775UA radar, consult Anritsu or its distributor to get information on precautions to be followed. Tab.3-5 below lists the primary component materials of the RA775UA radar for your reference. Tab.3-7 Component Materials Scanner unit Radome Chassis Base Material AES A5052P ADC12 Display unit Front panel Rear panel Pedestal 23 Material ABS ADC12 ABS+PC CHAPTER 4. FUNCTIONS AND NAMES Function and name of each part The RA775UA radar consists of a display unit to display video images on a screen and a scanner unit configured with an antenna to radiate radio waves and other components. The display unit has on its front panel eighteen(18) push-switch keys and one cursor key that lets you move a cursor in any desired direction. A combination of these keys allows you to utilize all functions of your radar, providing a comfortable, easy way to operate. ●4.1 Key layout Cursor key MENU key ENT key MENU ENT 3 1 HU RANGE Up key 1:58 RADAR OFF RANGE UP RANGE DOWN BRILL AUTO GAIN key GAIN STC key STC FTC POWER MOB RANGE Down key BRILL key( Contrast Brilliance, keys backlight) AUTO key FTC key MOB key MOTOR Scanner Motor fuse Soft keys(* ) Key No. POWER key SET1 SET2 SET3 EBL1 EBL2 RINGS VRM1 VRM2 TUNE VAR RNG FL EBL2 ST TRACK FL VRM2 ZOOM TARGET GZ SLEEP SEL WIN OFF-C PICTURE NEXT NEXT NEXT Tab. 5 Function of soft key (Factory setting) *Every time Next key is pressed, soft key group switches as follows. SET1 → SET2 → SET3 → SET4 24 Control knob SET4 PPI PPI/3D PPI/PPI PPI/NAV ALL PPI ALL PPI2 NEXT ●4.2 Rear panel SCANNER POWER OPTION •Power supply connector ‚Grounding terminal „Scanner connector ƒOption connector • Power supply connector Use this connector to plug in the power supply cable. Standard NMEA interface terminal is included in this connector. Refer to Section 3.6 “ Connecting Cables “ and Section 3.8 “Connecting External Equipment to Display Unit “. ‚ Grounding terminal Use this terminal to connect grounding wire. Refer to Section 3.6 (3) “Grounding wire”. ƒ Option connector Use this connector to connect NMEA, an external monitor, external buzzer and GYRO I/F. A dedicated cable or dedicated module box is required to connect these pieces of equipment. Refer to Section 3.8 “Connecting External Equipment to Display Unit”. „ Scanner connector Use this connector to plug in the inter-connecting cable to connect the scanner unit. Refer to 3.6 “Connecting cable “. ●4.3 Radar screen(Single screen) Range Range ring interval Display mode 3 1 HU A L 0.23NM Heading angle Cruising speed HDG 129.0°T SPD 12.0KT Enlarging echo Guard zone Track 59 S AT AT ST1 GZ I N TK 15S Way point 1:58 EBL1 RADAR OFF VRM1 Tune meter Picture hold Zoom Off-center EBL2 Gain STC FTC VRM2 Indicate soft key FLEBL2 Cross cursor FLVRM2 WP 134.4° 12.5NM +LAT/LON 35°08.42N 139°02.53E EBL1 VRM1 Pulse width Course error HOLD ZOOM OFF−C NEXT Cross cursor position (LAT/LON or Distance/Bearing) 1 129.8° 1 12.34NM LAT/LON 35°08.42N 139°02.53E 2 129.8° 2 12.34NM Bearing scale 25 Ship’s position EBL2 VRM2 ●4.4 Radar screen (Dual screen) ex) PPI/PPI screen Range(Left screen) Range ring interval (Left screen) 6 1.0 HU Range(Right screen) Range ring interval (Right screen) A .75 .25 L HOLD Tune meter Picture hold EBL1 Display mode VRM1 + Pulse width EBL2 VRM2 Indicate soft key Cross cursor FL EBL2 FL VRM2 Cruising speed Guard zone(Right screen) Way point NEXT Heading angle Guard zone(Left screen) AT1 G 59/AT Course error EBL1 VRM1 0.23 SPD 12.8KT GZ R IN XTE >>> HDG 129.0° GZ L IN 129.8° +MK 38.4° ST1 12.34NM 5.28 TK 15S Cross coursor position Enlarging echo Track WAY P 134.4° S AT/AT 12.5NM F AT/AT LAT 35°08.42N 2 129.8° LON 139°02.53 E 2 3.62NM Ship’s position AUTO (Left/Right) Gain (Left/Right) STC (Left/Right) FTC (Left/Right) VRM2 (LAT/LON or Distance/Bearing) EBL2 ●4.5 Radar screen (All PPI screen) Pulse width Range Range ring interval Display mode Guard Zone 3 1 HU GZ IN OFF−C HOLD ZOOM L 1:58 RADAR OFF Cross cursor 26 Off-center Picture hold Zoom ●4.6 Radar screen (All PPI /PPI screen) Range(Left screen) Range ring interval (Left screen) 6 1.0 HU Range(Right screen) Range ring interval (Right screen) .75 .25 L GZ IN GZ IN HOLD Display mode Picture hold Gurad zone(Right screen) Guard zone(Left screen) Pulse width + Cross cursor ●4.7 Navigation screen NAV DISPLAY Way point WP 1 3 4 .4 ° COURSE 1 2 .5 N M Heading angle Cruising speed HDG 1 2 9 .0 ° Current position SPD 1 2 .8 K T LAT 3 5 ° 0 8 .4 2 N Sea water temperature LON 1 3 9 .0 2 .5 3 E Depth of water TEMP 2 0 .5 °C DEPTH 9 3 .2 M Course error >>> 0 .2 3 N M ST’BY It is necessary that navigation equipment such as a GPS is connected to your radar, this screen displays the position and cruising speed of your ship, seawater temperature, and other navigation information. Note: Heading angle will be displayed "COG" when Course Over Ground data is used. Note: Cruising speed will be displayed "SOG" when Speed Over Ground data is used. Deviation from course Indication mark 0.00 ->< 0.02 -> or < 0.04 ->> or << 0.08 ->>> or <<< 0.16 ->>>> or <<<< Tab.6 Indication of deviation from course 27 > < Indicates starboarding the helm (right) Indicates porting the helm (left) CHAPTER 5. OPERATION Basic operation of radar The RA775UA radar has several fixed-function keys on the front panel. These functions can be controlled by simply pressing the key. Also, special functions can be customized to soft-keys by user-setting. The followings explain the operation of each keys. 5.1 Powering On and Off (1) Powering On Press the "POWER" key. Buzzer sounds "pi" and starts the radar system. Screen contrast and brilliance is set to the level that of the radar system was power off. (2) Powering off Keep pressing the "POWER" key more than 3 seconds, then the radar system will power off. 5.2 Adjusting contrast and brilliance of the screen, and key-backlight (1) Press the "BRILL" key. (Bar indicating contrast, brilliance, and key-backlight appears on the screen.) (2) Adjust each items with the control knob. Items can be selected by up-down cursor. (3) When the adjustment is finished, press either the "BRILL" key or the "ENT" key to exit from the adjustment screen. (Pressing some other key after adjustment will lead to the function of the pressed key.) BRILL ―> Control knob (Adjustment of contrast) ――> └> Up/Down (Selection of brilliance, key-backlight) └ - > Other function key Move to other BRILL or ENT functions .75 .25 HU ST’BY CONTRAST 50 BRILLIANCE KEY BACKLIGHT 50 28 ●5.3 Basic Operations ××× = keys to press 5.3.1 Powering On and Off POWER ON POWER Press "POWER"key to power on. 2 minutes timer and "RADAR OFF" are displayed. Keep pressing "POWER" key to power off. Press the "BRIL" key. SCREEN BRILL contrast brilliance key backlight Control bars are indicated on the screen. Up/Down Select contrast. Control knob Adjust contrast with knob. Up/Down Select brilliance. Control knob Adjust brilliance with knob. Up/Down Select key backlight. .75 .25 HU 1:58 RADAR OFF CONTRAST 50 BRILLIAMCE 50 KEY BACKLIGNT 4 Control knob Adjust key backlight with knob. ENT Press "ENT"key to return. Radar turn into "ST'BY"mode when 2 minutes timer is finished and "ST'BY"displayed. 5.3.2 Transmitting START POWER Press "POWER" key to operate, radar picture appears .75 AT .25 HU on the screen. Another press "POWER" key, radar turn to stand-by mode. Keep pressing "POWER" key more than 3 seconds, radar turn to power off. CHANGE RANGE RANG UP or Pressing "RANGE UP" key produces a long-distance range, RANGE DOWN "RANGE DOWN" key a short-distance range. 29 5.3.3 Adjusting contrast and brilliance of the screen, and key-backlight ××× = keys to press (1) Press the "BRIL" key. (Bar indicating contrast, brightness, and panel appears on the screen.) (2) Select contrast, brilliance, or key backlight with the up-down cursor. (3) Adjust each item with the control knob. (4) When the adjustment is finished, press either the "BRIL" key or the "ENT" key to exit from the adjustment screen. (Pressing some other key after adjustment will lead to the function of the pressed key.) BRIL ――> Control knob (Adjustment of contrast) └-> Up/Down ――> BRIL or ENT (Adjustment of brightness, panel)└-> Other function key Shift to other func- tions .75 .25 HU ST‘BY CONTRAST 50 BRILLIANCE 50 KEY BACKLIGNT 4 5.3.4 Changing Distance Range (RANGE UP, RANGE DOWN) Pressing "RANGE UP" key produces a long-distance range, and "RANGE DOWN" key a short-distance range. 0.25 0.5 0.75 1.5 12 24 Number of rings RANGE 0.125 Range ring interval 0.0625 0.125 0.25 0.25 0.25 0.5 5.3.5 Automatic adjustment (AUTO) AUTO adjusts the GAIN, STC and FTC automatically. If the "AUTO" key is pressed while GAIN, STC, or FTC are under manual settings, they will all be switched to AUTO or HBR(HARBOR) mode. Pressing "AUTO" key, AT1, AT2 and HBR changes alternately. Pressing STC key, all controls return to manual state. Use when find navigation way in much echo such as port area, narrow channel, small islands area. The control condition is similar to less STC, slightly down GAIN. AT2 Use at open sea to suppress the sea clutter. The control condition is similar to high STC, high GAIN. HBR Use at in a bay area, inlet, or a harbor. The control condition becomes manual STC by using the value established HARBOR of ADJUST menu. AT1 Note) Refer to “Setting HARBOR STC circuit(HARBOR)” in section 5.5.4.5.4(7). Note) When you select HBR mode, FTC will be switched to MANU mode. * What happens if GAIN, STC, and FTC keys are pressed during AUTO operation? 1) If GAIN key is pressed, Only GAIN enters a manual state. 2) If FTC key is pressed, Only FTC enters manual state. 30 3) If STC key is pressed, STC, GAIN, and FTC enter manual state. 5.3.6 Sensitivity adjustment (GAIN) (1) When the "GAIN" key is pressed, the GAIN display on the left side of the screen will be reversed .75 .25 HU as G 35 and the adjustable state will be entered. (2) When the control knob is turned, the figure will be ST‘B shifted within a range of 0 and 99, and the sen- sitivity can be manually adjusted. When the G 50 "AUTO" key is pressed, all (GAIN, STC and FTC) will enter an AUTO state. (3) After the adjustment is finished, press the "GAIN" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place. (a) To make adjustments by MANUAL (When the GAIN key is pressed under AUTO operation, shift to a manual operation will take place.) GAIN ―> Control knob ―> GAIN --------------- The adjustment state is ended. | └> Other function key └> AUTO └> AUTO ---------------- GAIN, STC, and FTC are set at AUTO and the --- Shift to other functions adjustment state is ended. (b) To switch from the MANUAL state AUTO ----------------------------------------------- Set GAIN, STC and FTC at AUTO 5.3.7 Removing sea clutter (STC) (1) When the "STC" key is pressed, the STC display on the left side of the screen will be reversed as S 35 and the adjustable state will be entered. (2) When the control knob is turned, the figure will be shifted within a range of 0 and 99, and the STC can be manually adjusted. When the "AUTO" key is pressed, all (GAIN, STC and FTC) will enter an AUTO state. (3) After the adjustment is finished, press the "STC" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place. (a) To make adjustments by MANUAL (When the STC key is pressed under AUTO operation, shift to a manual operation will take place.) STC ―> Control knob ―> STC ----------------- The adjustment state is ended. | └> Other function key └> AUTO └> AUTO ----------------- STC, GAIN, and FTC are set at AUTO and the ----- Shift to other functions adjustment state is ended. 31 NOTE) When you select MANU mode, GAIN and FTC will be switched to MANU mode, too. (b) To switch from the MANUAL state AUTO ----------------------------------------------- Set STC, GAIN and FTC at AUTO 5.3.8 Removing rain and snow clutter (FTC) (1) When the "FTC" key is pressed, the FTC display on the left side of the screen will be reversed as F (2) .75 .25 HU 500 and the adjustable state will be entered. When the control knob is turned, the figure will be ST‘B shifted within a range of 0 and 99, and the sen- sitivity can be manually adjusted. When the F 50 "AUTO" key is pressed, all (GAIN, STC and FTC) will enter an AUTO state. (3) After the adjustment is finished, press the "FTC" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place. (a) To make adjustments by MANUAL (When the FTC key is pressed under AUTO operation, shift to a manual operation will take place.) FTC ―> Control knob ―> FTC --------------- The adjustment state is ended. | └> Other function key └> AUTO └> AUTO ---------------- GAIN, STC, and FTC are set at AUTO and the --- Shift to other functions adjustment state is ended. (b) To switch from the MANUAL state AUTO ----------------------------------------------- Set GAIN, STC and FTC at AUTO 5.3.9 Man Over Board (MOB) Pressing the MOB key will send the own ship's position data to the external equipment through NMEA port with "WPL" format. There is no change on the screen. To check the MOB position data, select "MOB" from the "WINDOW" menu in the "SETUP". The position of MOB and current position will be displayed on the screen. If press the "MOB" key while watching the MOB screen, MOB data will be cleared and return to previous screen. If press other keys, MOB data will be remained and return to previous screen. 32 ●5.4 Functions of Soft Keys ××× = keys to press ・Outline of soft keys Any function can be optionally allocated to the key upon which numbers 1-7 are indicated. maximum of 4 groups of functions can be allocated to each soft key, and switching between those functions is conducted by the "NEXT" key. 5.4.1 Bearing measurement (EBL1) (a) Bearing measurement by EBL1 (1) When "EBL1" key is pressed, electric bearing line (EBL1) appears and the angle from the direction of the ship’s head which is set at 0 °will appear in a reverse display at the lower left of the screen(Note). (2) Use the control knob to place the direction cursor on the target, and read the angle. (3) After the setting i) If "EBL1" key is pressed, the setting is completed. ii) If "other function" key is pressed, the function will be shifted to that of the pressed key with the setting condition still in effect. note: EBL1 ―> Control knob | xxx.x ° indicates EBL1. ―> EBL1 EBL1 is displayed and the process is finished. └> Other function key EBL1 is displayed and the function is shifted. └-> EBL1 EBL1 is turned off.(b) (b) To turn off the EBL1 When the "EBL1" key is pressed twice, EBL1 disappears. (EBL1 OFF) Note: Please refer to "5.5.1.1 Bearing measurement (EBL1)". 5.4.2 Bearing measurement (EBL2) The operation is the same as EBL1, please refer to EBL1 operation. The "EBL2" will appear in a reverse display at the lower right of the screen 5.4.3 Distance measurement (VRM1) (a) Distance measurement by VRM1 (1) When "VRM1" key is pressed, variable range maker (VRM1) appears and the distance in a reverse display appears at the lower left of the screen. (2) Place the marker on the front edge of the target with the control knob and read the distance. (3) After the setting i) If "VRM1" key is pressed, the setting is completed. ii) If "other function" key is pressed, the function will be shifted to that of the pressed key with the setting condition still in effect. note: 1 33 xxx.x NM indicates VRM1. VRM1 ―> Control knob | └> ―> VRM1 VRM1 is displayed and the process is finished. └> Other function key VRM1 is displayed and the function is shifted. VRM1 is turned off.(b) VRM1 (b) To turn off the VRM1 When the "VRM1" key is pressed twice, VRM1 disappears. (VRM1 OFF) Note: Please refer to "5.5.1.2 Determining the distance (VRM1)". 5.4.4 Distance measurement (VRM2) The operation is the same as VRM1, please refer to VRM1 operation. The "VRM2" will appear in a reverse display at the lower right of the screen 5.4.5 Measuring the angle between two points (FL EBL2) Note: VRM2 and EBL2 do not follow the OFF-C function while floating. Note: Please refer to "5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 )". (a) Setting a reference point for measurement of the angle. (1) Press "FL EBL2" key. “SET START POINT” is displayed and a small cross mark appears. FL EBL2 −> FL EBL2 is turned ON and (Select FL EBL2) the small cross mark appears. (2) Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose angle will be measured, and press the "ENT" key. Up/Down & Left/Right −> ---- ENT Criterion of the reference point is set. (Place the cross cursor on an echo) (b). Measuring Perform the operations in the above mentioned and "measuring the angle(EBL2)", and place the EBL2 on another echo. EBL2 is displayed on the screen based on the placed fixed cross cursor. " 2 xxx.x°" which is displayed at the lower right will be the angle between the two points. 5.4.6 Measuring the distance between two points (FL VRM2) Note: Please refer to "5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 )". (a) Setting a reference point for measurement of the angle. (1) Press "FL VRM2" key. “SET START POINT” is displayed and a small cross mark appears. 34 FL VRM2 −> FL VRM2 is turned ON and (Select FL VRM2) the small cross mark appears. (2) Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose angle will be measured, and press the "ENT" key. Up/Down & Left/Right −> ---- ENT Criterion of the reference point is set. (Place the cross cursor on an echo) (b) Measuring Perform the operations in the above mentioned and "measuring the distance(VRM2)", and place the VRM2 on another echo. VRM2 is displayed on the screen based on the placed fixed cross cursor. " 2 xx. xNM" which is displayed at the lower right will be the distance between the two points. 5.4.7 Changing the group of Soft Keys (NEXT) Any function can be optionally allocated to the key upon which numbers 1-7 are indicated. A maximum of 4 groups of functions can be allocated to each soft key, and switching between those functions is conducted by the "NEXT" key. The "NEXT" key switches between allocated function groups on the soft key which numbers 1-7 are indicated. Every time pressing the "NEXT" key, function groups changes to another groups included pressing "NEXT" key. The function groups can also be changed at the "KEY ASSIGNMENT" function in the "CUSTOM" menu of the "SETUP" with left-right cursor key. Operation NEXT NEXT NEXT NEXT Soft Key Setting Example SET1 SET2 SET3 SET4 EBL1 EBL2 RINGS PPI VRM1 VRM2 TUNE PPI/3D VAR RNG FL EBL2 ST PPI/PPI TRACK FL ZOOM TARGET 5 GZ SLEEP ALL PPI PICTURE ALL PPI2 SEL WIN OFF-C NEXT NEXT NEXT PPI/NAV NEXT The function can be changed at the "KEY ASSIGNMENT" function in the "CUSTOM" menu of the "SETUP". 35 5.4.8 Erasing heading maker temporarily (HDG OFF) Press the “HDG OFF” key. The heading maker is not displayed as long as you hold it down. 5.4.9 Using parallel cursors (///CSR) Press the “///CSR” key. Parallel cursors will appear on the screen. As you move EBL, the parallel cursors also move. To cancel the "///CSR" function, press "///CSR" key once more. Note: Please refer to "5.5.1.8 Using parallel cursors (///CSR)". 5.4.10 Establishment of the indication of the RANGE RINGS (RINGS) Press the “RINGS” key. Range Rings will appear on the screen. To cancel the "RINGS" function, press "RINGS" key once more. Note: Please refer to "5.5.1.9 Establishment of the indication of the RANGE RINGS (RINGS)". 5.4.11 ON/OFF of variable range function (VAR RNG) Usually the range changes in steps as 0.5--0.75--1.5--3.0--....., but using this function will enable a consecutive change such as 0.5--0.6--0.7--0.8--..... . Press the “VAR RNG” key. The VAR RNG function becomes valid and VAR will be displayed at the upper left of the screen (beside MODE). To cancel the "VAR RNG" function, press "VAR RNG" key once more. The range changes continuously with the up-down cursor while the VAR RNG function is on, and it changes in steps with the "RANGE UP" or "RANGE DOWN" keys. If pressing other keys, return to the normal state from continuously range change state. 5.4.12 Changing display modes (MODE) (1) Select MODE from the pull-down display items using the up-down cursor keys, and press the "ENT" key. (2) When the HU/HS/NU/CU/TM sign is displayed beside the MODE item, select display mode with the up-down cursor keys and press the "ENT" key. (3) The setting will be completed when the "ENT" key is pressed after the selection. (NOTE1,2) Press the "MODE" key, the display mode will change on every pressing to HU, HS, NU, CU, TM in order. The mode select at the upper of the screen is indicated. However, a setting will be needed for the ship’s speed if TM is selected. Also, a heading or a course information is necessary for NU, CU and TM. note: TM is valid only on PPI screen. The mode will change to NU on the other screen automatically. Note: Please refer to "5.5.2.1 Changing display mode (MODE)". 5.4.13 Guard Zone (GZ) A function that sets a guard zone of any distance and any angle range, creating alarm tone when either echoes above a certain level exist (IN MODE) or no echoes exist(OUT MODE). 36 When GZ is operated with soft keys, guard zone settings and ON/OFF settings can be conducted, but the mode (IN or OUT) is to be set in the menu. Note: Please refer to "5.5.2.2 Guard Zone (GZ)". (1) When the "GZ" key is pressed, the present mode setting will be displayed on the left side of the screen as GZ IN. A small cross cursor for setting the guard zone will be displayed at the screen center while "SET CENTER POINT" is displayed at the bottom, activating a guard zone setting state. (2) Use the up-down/left-right cursor keys to move the cross cursor to the center of the warning zone to be set, and press the "ENT" key. (3) From the cross cursor position set in (2) above as the center, expand the guard zone in the direction of the distance with the up cursor key and in the direction of the angle with the right cursor key, thus making the form of a fan. To make the warning zone smaller, operate the down cursor key (in the direction of the distance) and the left cursor key (in the direction of the angle). (4) After the setting the guard zone, finish by pressing the "ENT" key. Press the GZ key twice to cancel the guard zone function. GZ −> Up/Down & Left/Right | (Setting the center of GZ) └> GZ −> ENT −> Up/Down & Left/Right −> ENT Setting completed (Setting the scope of GZ) --------------------------------------------------------------------- Canceling GZ ・Stop the alarm tone Press the "MENU" key or "ENT" key during the alram tone sounds, alarm tone will stop. note: Set the mode (IN or OUT) at the "GZ MODE" of the "PRESET2" function in the "CUSTOM" menu of the "SETUP" Set the alarm level (IN or OUT) at the "GZ LVL" of the "PRESET2" function in the "CUSTOM" menu of the "SETUP" 5.4.14 Off Center (OFF-C) Displaying the location specified by the cross cursor as the ship's location Note: Please refer to "5.5.2.3 Shifting display in specific direction (OFF-C)". (1) When the "OFF-C" key is pressed, OFF-C is displayed at the upper right and "SET OFF CENTER POINT" at the bottom of the screen, and setting is ready to be entered. (2) Move the cross cursor with the cursor keys to move the ship to the intended location, and press the "ENT" key. The ship's location will be displayed as the cursor's location. OFF-C is displayed at the upper right , which indicates that the "OFF-C" state is entered. (3) To cancel "OFF-C" function, press the "OFF-C" key. (a) To conduct the setting OFF-C −> Up/Down & Left/Right −> ENT --------Conduct Off Center to exit the adjustment state. Note: VRM2 and EBL2 do not follow the OFF-C function while floating. The function operate on PPI screen only. (b) To cancel the setting 37 OFF-C ----------------------------------- The "OFF-C" display at the upper right disappears and function returns to the ordinary state from the Off Center state. 5.4.15 Setting of the SLEEP function(SLEEP) This function sends a 30-second-transmissions during pre-fixed hours. After a transmission, a power-saving mode is entered with the screen in ST'BY state (the scanner-OFF state) and the LCD backlight turned off. This action is repeatedly executed. Usage example, set a guard zone and have the warning signal automatically confirmed every prefixed period. Press the "SLEEP" key. Every pressing the key, "SLEEP" function will be set as 5-minutes, 10minutes, 15-minutes, or off. When a transmission is conducted after setting a SLEEP mode, a ST'BY state is entered and the backlight turns off after a 30-second-transmission. (Power-saving mode). Two minutes before the fixed time the backlight turns on and the 2-minute timer starts. Then, at the fixed time another 30second-transmission begins. This series of actions are repeated. If any one key is pressed during the course of this action, the SLEEP function will be canceled. Note: Please refer to "5.5.2.4 Setting of the SLEEP function(SLEEP)". (1) Setting procedure SLEEP ->(Select 5min.) → ENT → POWER -> 30-second-transmission every 5 min. └ transmission ON SLEEP ->(Select 10min.) → ENT → POWER -> 30-second-transmission every 10 min. └ transmission ON SLEEP ->(Select 15min.) → ENT → POWER -> 30-second-transmission every 15 min. └ transmission ON SLEEP ->(Select OFF) --------------------------------------- SLEEP function is turned OFF Setting completed 5.4.16 Tuning adjustment (TUNE) (1) When the "TUNE" key is pressed, the TUNE display on the upper-right side of the screen will be reversed as 35 and the adjustable state will be entered. (2) When the control knob is turned, the figure will be shifted within a range of 0 and 99, and the receiver tuning can be manually adjusted. (3) After the adjustment is finished, press the "ENT" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place. 38 TUNE ―> Control knob ―> TUNE or ENT ------- The adjustment state is ended. (tuning adjustment) └> Other function key --- Shift to other functions Note: Use the "MENU" to return auto-tuning state. Note: Please refer to "5.5.3.4 Adjusting receiver tuning (TUNE)". 5.4.17 Echo expansion (ST) Expanding the echo to the direction of the distance. When the "ST" key is pressed, "ST1" is displayed on the left side of the screen and the state of echo expansion is entered. This changes the picture to display echoes expanding in the direction of the distance. Two types of echo expansion exist, which are alternated as follows , every time this key is pressed. Note: Please refer to "5.5.3.5 Echo expansion (ST)". ST1 → ST2 → OFF (Expansion rate ST1 < ST2 ) Note: The "OFF" state is not displayed on the screen and the "ST2" display disappears. 5.4.18 Displaying locus of target (TRACK) When the "TRACK" key is pressed, "TK 15SEC" is displayed on the left side of the screen and track mode is entered. 15S indicates the length of the track, and displays a maximum of 15-second-long sailing track. Note: Please refer to "5.5.3.6 Displaying locus of target (TRACK)". Every time this key is pressed, the course length switches as follows. 15 sec → 30 sec → 1 min → 3 min → 6 min → CONT → OFF Note: The "OFF" state will not displayed on the screen and the "TK xx " display will disappear. 5.4.19 Enlarging selected areas (ZOOM) The video image centering around the cross cursor is doubled as it is displayed on the screen. Press the "ZOOM" key to "ZOOM" ON. A small cross cursor for setting and "SET ZOOM POINT" are displayed at the screen center and at the bottom respectively, and the magnification point is to be set. Use cursor keys to move the cross cursor to the point to be magnified, press the "ENT" key and the setting is completed. The area around the cross cursor is displayed in 2x magnification, with blinking "ZOOM" displayed at the screen upper right, indicating that a ZOOM display is being conducted. To cancel the ZOOM function, press the "ZOOM" key again or change the range scale. Note: Please refer to "5.5.3.7 Enlarging selected areas (ZOOM)". 39 ZOOM −> Up/Down & Left/Right −> ENT ZOOM Ssetting (Move cross cursor) └> (Select OFF) −> ZOOM --------- ZOOM caceled Note1: VRM2 and EBL2 do not follow the ZOOM function during a floating state. Note2: Normal screen returns when you change the range scale. Note3: ZOOM function is unusable in 3D/PPI screen. Note4: ZOOM function is unusable in OFF-C. Note5: Center of ZOOM can be set any desired position within the set range. 5.4.20 Increasing sensitivity (S/L) The pulse width is automatically changed as you change the range. However, if you want to increase sensitivity, you can choose sensitivity from two pulse lengths. The short pulse (SHORT) gives you sharp images with high distance resolution. The long pulse (LONG) provides high sensitivity and shows targets in large size for easy identification although distance resolution is reduced. Press the "S/L" key to select the Pulse length(LONG or SHORT). The pulse length changes L(Long) and S(Short) alternately. Note: Please refer to "5.5.3.8 Increasing sensitivity (S/L)". S/L −> (Select SHORT) └> or (Select LONG) −> Set to short pulse −> Set to long pulse 5.4.21 Switching the screen (SEL WIN) Switching to the desired screen for activation on a 2-screen display(PPI+PPI). When change the range, or adjust the GAIN, STC, or FTC, or control the VRM, EBL, select the desired screen first. ex.) To be used for switching the range on the PPI+PPI screen. When the "SEL WIN" key is pressed, the range of the selected screen will be displayed in reverse, indicating that the screen is active. Note: Please refer to "5.5.4.2 Switching screens on PPI/PPI screen ( SEL WIN )". SEL WIN −> (Select right screen) └> or (Select left screen) −> Right screen activated −> Left screen activated If VRM1 is controlled on the screen that is oposit from current VRM1 displayed screen, VRM1 is moved and displayed to activated screen. The EBL1, EBL2, and VRM2 is the same manner. 5.4.22 Reversing the screen (PICTURE) The LCD display is affected by weather, temperature, and day / night environment conditions. In some cases, you may find the LCD display is easier to view when the entire screen is reversed. 40 Press the "PICTURE " key, a normal display will appear if reverse display has been selected, and a reverse display if normal display selected. Note: Please refer to "5.5.4.3 Reversing the screen (PICTURE)". 5.4.23 Change to PPI screen ( PPI ) Press the "PPI" key, the screen will change to PPI screen. Use to change the screen from other modes to PPI. .75 .25 HU + PPI screen 5.4.24 Change to SEMI3D/PPI screen ( SEMI3D ) Press the "SEMI3D" key, the screen will change to SEMI3D/PPI screen. Use to change the screen from other modes to SEMI3D/PPI. .75 .25 HU S + Note: All controls, such as EBLs, VRMs effects both screen. The ZOOM, OFF-C, FL EBL2, and FL VRM2 could not be used on this mode. The "SEMI3D" screen displays the center as ship's heading always. 5.4.25 Change to PPI/PPI screen ( PPI/PPI ) Press the "PPI/PPI" key, the screen will change to PPI/PPI screen. Use to change the screen from other modes to PPI/PPI. Note: (1) The radar picture is refreshed with two scanning interval for each screen. Right screen picture is holded during refreshing left screen, left screen holded during refreshing right screen. When your ship navigates in high speed, use PPI screen to get fast refreshing picture. 280 320 000 040 080 SEMI3D/PPI screen .75 .25 HU S 24 6 + G 55/35 S 35/AT F 35/AT PPI /PPI screen refreshing radar picture LEFT screen RIGHT screen /―――/・・・・・・/―――/・・・・・・/―――/・・・・・・ t ime→ ・・・・・・ /―――/・・・・・・/―――/・・・・・・/―――/ holding previous picture (2) The ZOOM, OFF-C, FL EBL2, and FL VRM2 could not be used on this mode. (3) The range, GAIN, STC, FTC, GZ can be used independently for selected window with "SEL 41 WIN". Selected window is that the range displayed in reverse character. Please refer to "SEL WIN". (4) The cross cursor can be controlled on selected window. 5.4.26 Change to PPI/NAV screen ( PPI/NAV ) Press the "PPI/NAV" key, the screen will change to PPI/NAV screen. Use to change the screen from other modes to PPI/NAV. .75 .25 HU S NAV DI SPLAY WAY P + Note: The ZOOM, OFF-C, FL EBL2, and FL VRM2 could not be used on this mode. 123.4° 6.8NM COURSE 2.38NM XTE <<< HDG 267.3°T SPD 12.8KT TEMP 20.8°C DEPTH 58.3M LAT/LON 34°08.22N 138°02.53E PPI/NAV screen 5.4.27 Change to ALL PPI screen ( ALL PPI ) Press the "ALL PPI" key, the screen will change to ALL PPI screen. Use to change the screen from other modes to ALL PPI. Note: (1) The range, rings interval, display mode are displayed on the upper left of the screen. (2) Return to PPI screen mode pressing a key except MENU, range UP or DOWN, or POWER key. .75 .25 HU + ALL PPI screen 5.4.28 Change to ALL PPI/PPI screen ( ALL PPI2 ) Press the "ALL PPI2" key, the screen will change to .75 .25 HU S .25 .125 ALL PPI/PPI screen. Use to change the screen from other modes to ALL PPI/PPI. Note: (1) The range, rings interval, display mode are displayed on + the upper left of each screen. (2) Return to PPI/PPI screen mode pressing a key except MENU, range UP or DOWN, or POWER key. (3) The radar picture is refreshed with two scanning ALL PPI/PPI screen interval for each screen. Right screen picture is holded during refreshing left screen, left screen holded during refreshing right screen. When your ship navigates in high speed, use PPI screen to get fast refreshing picture. 42 ●5.5 MENU Operation ・List of MENU List of Main Menu MARK NAV ECHO SETUP (MAIN-MENU) (MAIN-MENU) (MAIN-MENU) (MAIN-MENU) HU/HS/NU/CU/TM GAIN AUTO/MAN (MANU/NMEA) STC AUTO/MAN/HARBOR GZ ON/OFF FTC AUTO/MAN ON/OFF OFF-C ON/OFF TUNE AUTO/MAN SEL WIN FL EBL2 ON/OFF SLEEP OFF/5min/10min/ ST OFF/ST1/ST2 PICTURE FL VRM2 ON/OFF 15min TRACK OFF/15SEC/30SEC/ SYSTEM CHECK HDG OFF OFF 1MIN/3MIN/6MIN/CONT CUSTOM ///CSR ON/OFF ZOOM ON/OFF PRESET1 (SUB-MENU) RINGS ON/OFF SL SHORT/LONG PRESET2 (SUB-MENU) VAR RNG ON/OFF EBL1 ON/OFF VRM1 ON/OFF EBL2 ON/OFF VRM2 MODE WINDOW PPI/SEMI3D+PPI/ PPI+PPI/PPI+NAV/ ALL PPI/ALL PPI+PPI/MOB DAY/NIGHT KEY ASSIGNMENT ADJUST (SUB-MENU) TARGET +MK LINE ON/OFF List of Custom Menu PRESET1 (SUB-MENU) PRESET2 (SUB-MENU) HM FLSH ON/OFF GZ LEVEL 1∼7 STERN M ON/OFF GZ MODE IN/OUT NORTH M ON/OFF HOLD ON/OFF ST’BY NAVI/NOR DISPLAY RDR/MONI/NAV BUZ VOL OFF/LOW/HIGH EXT BUZ OFF / CONT / INT RM UNIT NM / KM / SM IN P/R 1080/1024/2048/4096/360 DEPTH M / FT / FM OUT P/R 1080/1024/2048/4096/360 TEMP °C / F DEMO ON / OFF EBL BRG REL / TRUE / MAG IR OFF / IR1 / IR2 WP BRG TRUE / MAG SPD SET NMEA / MANU HEAD INPUT NMEA / SIN・COS /12BIT / 10BIT LANGUAGE 15 countries HEAD TRUE / MAG +MK MODE DIST・BRG / P TABLE 0 ∼ 2 0.0 KT LAT・LON ADJUST (SUB-MENU) TIMING ADJ HEAD ADJ TUNING CAL. 1∼30 AUTO STC 1∼16 HARBOR 1∼16 .75 .25 HU ECH OMARK ECHO NAV GAIN STC FTC ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ 1∼9 AUTO GAIN ▼ ANTENNA SETU P MAN AUTO ST‘ B TUNE MAIN-MENU ST TRACK ZOOM S/L 43 SUB-MENU 5.5.1 Mark Menu ××× = keys to press Setting for markers and cursors ・ Common operations for the MARK menu (Up to the point when "MARK" menu is selected from the main menu) Press the "MENU" key and select "MARK" from the displayed 4 main menus using the left-right cursor. (The contents of the selected MENU will appear on a pull-down display in accordance with the movement of the left-right cursor.) MENU ――> Left/Right (Select MARK) Further explanation about the MARK menu will be conducted on the assumption that this "common operation for the MARK menu" has already been completed. 5.5.1.1 Bearing measurement (EBL1) (1) Select EBL1 from the pull-down display items using the up-down cursor key, and press the "ENT" key. (2) When the ON/OFF sign is displayed beside the EBL1 item, select ON with the up-down cursor keys and press the "ENT" key. MARK EBL1 0.23 VRM1 EBL2 A ECHO NAV ▼ ▼ ▼ .25 HU ▼ ▼ ▼ ▼ .75 MARK ON OFF (3) When the "ENT" key is pressed, electric bearing line (EBL1) appears and the angle from the direction of the ship’s head which is set at 0 degree will appear in a reverse display at the lower left of the screen. (4) Place the marker on the center of the target with the control knob and read the bearing. Then, the display setting for EBL1 will be completed either (a)with the EBL1 display still on the screen if the "ENT" key is pressed, or (b)without the EBL1 display if the "MENU" key is pressed. (c)Pressing another function key will lead to the function of that key with the EBL1 display still on the screen. Note: .75 .25 HU 0.0° 1 ×××.×°indicates EBL1. Up/Down −> ENT (Select EBL1) SETUP −> Up/Down −> ENT −> (Select ON) Control knob (EBL1 operation) −> ENT (a) └> MENU (b) └> Other function key (c) Note: The displayed EBL angle is relative to heading or true to north, depends on the setting of "EBL BRG" in the "SETUP" menu. 44 5.5.1.2 Determining the distance (VRM1) (1) Select VRM1 from the pull-down display items using the up-down cursor key, and press either the "ENT" key. (2) When the ON/OFF sign is displayed beside the VRM1 item, select ON with the up-down cursor keys and press the "ENT" key. (3) When the "ENT" key is pressed, the variable range marker1 (VRM1) and the distance in a reverse display appears at the lower left of the screen (See Note), and the display is set for VRM1. (4) Place the marker on the front edge of the target with the control knob and read the distance. Then, the display setting for VRM1 will be completed either (a)with the VRM1 display still on the screen if the "ENT" key is pressed, or (b)without the VRM1 display if the "MENU" key is pressed. (c)Pressing another function key will lead to the function of that key with the VRM1 display still on the screen. Up/Down −> ENT −> (Select VRM1) .75 .25 HU 1 0.00NM Up/Down −> ENT −> Control knob −> ENT (Select ON) (VRM1 operation) └> MENU └> Other function key Note: 1 (a) (b) (c) ××.××NM indicates VRM1. 5.5.1.3 Bearing measurement (EBL2) Refer to the section “Bearing measurement (EBL1)”. The "EBL2" will appear in a reverse display at the lower right of the screen. Note: 2 ×××.×°indicates EBL2. 5.5.1.4 Determining the distance (VRM2) Refer to the section “Determining the distance (VRM1)”. The "VRM2" will appear in a reverse display at the lower right of the screen. Note: 2 ××.××NM indicates VRM2. 5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 ) Determining the distance (VRM2) (a) Preparation for the measurement (1) Use the up-down cursor keys to select FL VRM2 from among the pull-down display items, and press the "ENT" key. (2) Use the up-down cursor keys to select ON from the ON/OFF display beside the FL VRM2 items, and press the "ENT" key. “SET START POINT” is displayed and a small cross mark appears. (Once this is set, the "ON" state continues unless changes are made.) Up/Down −> ENT −> Up/Down −> ENT ------------------ FL VRM2 is turned ON and (Select FL VRM2) (Select ON) 45 the small cross mark appears. (b) Setting a reference point for measurement of the distance Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose distance will be measured, and press the "ENT" key. Up/Down & Left/Right −> ENT ------------ Criterion of the reference point is set. (Place the cross cursor on an echo) (c) Measuring Perform the operations in the above mentioned "Common operation for the MARK menu" and "measuring the distance(VRM2)", and place the VRM2 on another echo. VRM2 is displayed on the screen around the placed fixed cross cursor. " 2 xx. xNM" which is displayed at the lower right will be the distance between the two points. center VRM2 measure the distance between two targets . 7 5 5 .25 HU small cross mark cross mark of place the VRM2 on another echo . 7 .25 HU SET START POINT 2 0.72NM FL VRM2 indication of VRM2 Note: EBL2 and VRM2 are not follow to "ZOOM" and "OFF-C" function. 5.5.1.6 Measuring the angle between two points (FL EBL2) (a) Preparation for the measurement (1) Use the up-down cursor keys to select FL EBL2 from among the pull-down display items, and press the "ENT" key. (2) Use the up-down cursor keys to select ON from the ON/OFF display beside the FL EBL2 items, and press the "ENT" key. “SET START POINT” is displayed and a small cross mark appears. (Once this is set, the "ON" state continues unless changes are made.) Up/Down −> ENT −> Up/Down −> ENT ------------------ FL EBL2 is turned ON and (Select FL EBL2) (Select ON) the small cross mark appears. (b) Setting a reference point for measurement of the angle. Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose angle will be measured, and press the "ENT" key. Up/Down & Left/Right −> ENT -- Criterion of the reference point is set. (Place the cross cursor on an echo) (c) Measuring Perform the operations in the above mentioned "Common operation for the MARK menu" and "measuring the distance(EBL2)", and place the EBL2 on another echo. EBL2 is displayed on the screen based on the placed fixed cross cursor. 46 " 2 xx. xx°" which is displayed at the lower right will be the angle between the two points. Note: The displayed EBL angle is relative to heading or true to north, depends on the setting of "EBL BRG" in the "SETUP" menu. measure the angle between two points . 7 5 5 .25 HU small cross mark cross mark Origin of EBL2 FL EBL2 . 7 .25 HU SET START POINT 2 20.3° indication EBL2 5.5.1.7 Erasing heading maker temporarily (HDG OFF) (1) Use the up-down cursor key to select HDG OFF from among the pulled down and displayed items. of Not displayed while ENT key is held down. .75 .25 HU (2) Press the “ENT” key. The heading maker is not displayed as long as you hold it down. Up/Down −> ENT ---------- The heading maker is not displayed as long as you hold “ENT” key down. (Select HDG OFF) 5.5.1.8 Using parallel cursors (///CSR) Normally EBL is used to measure the exact bearing from the position of your ship to a target. However, you can also use parallel cursors. (1) Use the up-down cursor key to select ///CSR from among the pull-down and display items, and press the “ENT” EBL1 .75 .25 HU key.(ON/OFF display beside the ///CSR item) (2) Use the up-down cursor key to select ON . (3) Press the “ENT” key. Parallel cursors will appear on the screen. As you move EBL, the parallel cursors also move. To cancel the ///CSR function, either select OFF in (2). Parallel cursor Up/Down −> ENT (Select ///CSR) −> Up/Down (Select ON) −> ENT ----------------- Parallel cursor appears └> Up/Down (Select OFF)−> ENT ------------- Parallel cursor non-appears Note: Interval of ///CSR same as fixed range maker. ///CSR moves with EBL1. 47 5.5.1.9 Establishment of the indication of the RANGE RINGS (RINGS) (1) Use the up-down cursor key to select RINGS from among the pull-down and display items, and press the “ENT” key.(ON/OFF displayed beside the RINGS item) (2) Use the up-down key to select ON or OFF and press the “ENT” key Up/Down Select ON Range Rings ON Select OFF Range rings OFF −> ENT (Select RINGS) −> Up/Down (Select ON) −> ENT ------------------ Range rings appears └> Up/Down (Select OFF)−> ENT -------------- Range rings non-appears ・Number of range rings and range interval 0.5 0.75 1.5 12 24 Number of Rings Range 0.125 0.25 Interval 0.0625 0.125 0.25 0.25 0.25 0.5 .75 .75 .25 HU .25 HU Range rings ON Range rings OFF 5.5.1.10 Variable range function ( VAR RNG ) Usually the range changes in steps as 0.5--0.75--1.5--3.0--....., but using this function will enable a consecutive change such as 0.5--0.6--0.7--0.8--..... . (1) Use the up-down cursor keys to select VAR RNG from among the pulled down and displayed items, and press the "ENT" key. (2) When ON is selected with the up-down cursor key from the ON/OFF display beside the VAR RNG item, and the "ENT" key is pressed, the VAR RNG function becomes valid and VAR will be displayed at the upper left of the screen (beside MODE). Setting procedure Up/Down −> (Select VAR RNG) (3) ENT −> Up/Down (Select ON) −> ENT VAR RNG function is turned ON └> Up/Down (Select OFF) −> ENT VAR RNG function is turned OFF The range changes continuously with pressing the up-down cursor while the VAR RNG function is on, and it changes in steps with the "RANGE UP" or "RANGE DOWN" keys. Method of use Up/Down ----------------------------- Range changes continuously 48 RANGE UP & RANGE DOWN ------------ Range changes in step (4) To cancel the vari-range function, press a key except "RANGE UP" and "RANGE DOWN" key. When use the function, follow from (1) again. 5.5.1.11 Output the position data of Cursor ( TARGET ) Place the cross cursor to the position that is to output position data with up-down and left-right key. Use the up-down cursor keys to select TARGET from among the pull-down display items, and press the "ENT" key. The L/L data of the position will be output to NMEA port with TLL format. Up/Down −> ENT ・・・・・・・・・・・・・・・・・・・・・・・ output the L/L position of the cursor (Select TARGET) Note: When activate this function, nothing happened on the screen. 5.5.1.12 Follow the Distance and Bearing marker on the cursor (+MK LINE) (1) Use the up-down cursor keys to select +MK LINE from among the pulled down and displayed items, and press the "ENT" key. (2) When ON is selected with the up-down cursor key from the ON/OFF display beside the +MK LINE item, and the "ENT" key is pressed, the +MK LINE function becomes valid, and distance/bearing marker will be displayed at the cross cursor. Setting procedure Up/Down −> ENT (Select +MK LINE) (3) −> Up/Down (Select ON) −> ENT +MK LINE function is turned ON └> Up/Down (Select OFF) −> ENT +MK LINE function is turned OFF The distance/bearing marker follows to the cross cursor until +MK LINE function is turned OFF. . 7 5 . 7 5 .25 HU .25 HU +MK POS 230.0° 0.47 +MK POS 230.0° 0.47 +MK LINE OFF +MK LINE ON The distance/bearing marker follows to cross cursor. EBLs and VRMs can be used separately. 49 5.5.2 Nav (Navigation) Menu xxx = keys to press Radar functions for navigation aid are in this menu. Common operations for the NAV menu (Up to the point when "NAV" menu is selected from the main menu) Press the "MENU" key and select "NAV" from the displayed 4 main menus using the left-right cursor. (The contents of the selected MENU will appear on a pull-down display in accordance with the movement of the left-right cursor.) → MENU Left/Right (Select NAV) Further explanation about the NAV menu will be conducted on the assumption that this "common operation for the NAV menu" has already been completed. 5.5.2.1 Changing display mode (MODE) (1) Select MODE from the pull-down display items using the up-down cursor key, and press either the "ENT" key. (2) When the MODE sign is displayed beside the MODE item, select a mode with the up-down cursor keys and press the "ENT" key. (3) The display mode indicates upper-left on the screen. .75 .25 HU NAVIGATION MARK AT NAV >>> 0.23 NM ECHO MODE GZ OFF-C SLEEP SETUP HU HS NU CU TM UP/DOWN (Select MODE) --> ENT --> UP/DOWN |--> (Select HU) --> ENT ・・・・・・・・・・・ HU(Head up) |--> (Select HS) --> ENT ・・・・・・・・・・・ HS(Head set) |--> (Select NU) --> ENT ・・・・・・・・・・・ NU(North up) |--> (Select CU) --> ENT ・・・・・・・・・・・ CU(Course up) --> (Select TM) --> ENT ・・・・・・・・・・・ TM(True motion) Note1: Navigation equipment (gyrocompass, magnet compass, or GPS) must be connected to your radar in NU, CU and TM modes. Note2: In TM modes it is necessary to set as follow (1) or (2). (1) Input of speed information from NMEA. (2) Set your ship’s speed manually. Note3: TM works only on PPI screen, NU is used automatically for the other screens. 50 5.5.2.2 Guard Zone (GZ) A function that sets a guard zone of any distance and any angle range, creating alarm tone when either echoes above a certain level exist (IN MODE) or no echoes exist(OUT MODE). Setting guard zone (1) Select GZ from the pull-down display items using the up-down cursor keys, and press the “ENT” key. ON/OFF sign is displayed beside the GZ item. Up/Down → ENT -----------------------------------------------------------------------ON/OFF sign is displayed. (2) Select “ON” by “common operation for the GZ menu”, and press the “ENT” key. (3) The present mode setting will be displayed on the left side of the screen as GZ IN. A small cross cursor for setting the guard zone will be displayed at the screen center while "SET CENTER POINT" GZ IN is displayed at SET CENTER POINT the bottom, activating a guard zone setting state. (4) Use the up-down and left-right cursor keys to move the cross cursor to the center of the warning zone to be set, and press the "ENT" key. (5) From the cross cursor position set in (4) above as the center, expand the guard zone as follows. Expand with the right cursor key in the direction of the angle. Use the left cursor key to make the zone smaller. The central position of the guard zone. With this point as the center, the zone can be expanded in the directions of the GZ distance and the angle with the upper IN and right cursor keys respectively. Expand with the up cursor key in the direction of the distance. The mode (IN or OUT) is displayed when the state is ON. Use the down cursor key to make the zone smaller. Nothing is displayed when it is OFF. (6) After the setting the guard zone, finish by pressing the "ENT" key. To cancel the guard zone function, select “OFF” by “common operation for the GZ menu”, and press the “ENT” key. ENT → Up/Down & Left/Right → ENT → Up/Down & Left/Right → ENT ---------------------------------------------Setting completed (Setting the center of GZ) (Setting the scope of GZ) 51 Stop the alarm tone When the alarm sounds, press any key to stop. But the guard zone function is still working, the alarm may sounds again. To "OFF" the guard zone function, select "OFF" from GZ menu. Note1: To switch the IN or OUT mode, refer to “Guard Zone Mode” in section 5.5.4.5.3 “Changing the content of settings 2 (PRESET2)” Note2: To set the guard zone level, refer to “Guard Zone LeveL” in section 5.5.4.5.3 “Changing the content of settings 2 (PRESET2)” 5.5.2.3 Shifting display in specific direction (OFF-C) Displaying the location specified by the cross cursor as the vessel's location. (1) Select OFF-C from the pull-down display items using up-down cursor key, and press the "ENT" key. (2) When the ON/OFF sign is displayed beside the OFF-C item, select ON with the up-down cursor keys and press the "ENT" key. (3) OFF-C is displayed at the upper right and "SET OFF CENTER POINT" at the bottom of the screen, and setting is ready to be entered. Move the cross cursor with the cursor keys to move the ship’s to the intended location, and press the "ENT" key. The ship’s location will be displayed at the cursor's location. The display at the upper right will be normalized from the reverse state, which indicates that the "OFF-C" state is entered. (4) To cancel “OFF-C” function, either select OFF in (2) Up/Down → ENT → Up/Down (Select OFF-C) → (Select ON) ENT → Left/Right & Up/Down → ENT ----Set OFF-C → (Select OFF) ENT ----------------------------------------- Cancel OFF-C Note: VRM2 and EBL2 do not follow the OFF-C function while floating. The function operates only on PPI screen. Move the cross cursor indicates "OFF-C" state is entered .75 .75 .25 HU .25 HU OFF-C SET OFF-C POINT 5.5.2.4 Setting of the SLEEP function(SLEEP) This function sends a 30-second-transmissions during pre-fixed hours. After a transmission, a power-saving mode is entered with the screen in ST'BY state (the scanner-OFF state) and the LCD backlight turned off. This action is repeatedly executed. Usage example, set a guard zone and have the warning signal automatically confirmed every prefixed period. 52 (1) Use the up-down cursor keys to select SLEEP from among the pull-down display items, and press the "ENT" key. (2) When the OFF/5min/10min/15min display has appeared beside the SLEEP item, select a time to be set with the up-down cursor keys. (3) Press the "ENT" key and the setting is completed. When the SLEEP function is to be canceled, select OFF in (2). When a transmission is conducted after setting a SLEEP mode, a ST'BY state is entered and the backlight turns off after a 30-second-transmission. (Power-saving mode). Two minutes before the fixed time the backlight turns on and the 2-minute timer starts. Then, at the fixed time another 30-second-transmission begins. This series of actions are repeated. If any one key is pressed during the course of this action, the SLEEP function will be canceled. (a) Setting procedure Up/Down → → ENT Up/Down → (Select OFF) (Select SLEEP) → ENT → (Select 5min.) → ENT → POWER --------30-second-transmission every 5 min. → (Select 10min.) → ENT → POWER ------ 30-second-transmission every 10 min. → (Select 15min.) → ENT → POWER ----- 30-second-transmission every 15 min. ----------------------------- SLEEP function is turned OFF Transmission Setting completed (b) Action after setting (Operation) SLEEP setting(5min.) ⇓ ⇑(Under Tx) ⇑ (Under power-saving mode) ⇑ (2min. timer in use) ⇑ (Under Tx) ⇑ (Under power-saving mode) 0 sec. 30 sec. 3 min. 5min. 5and a half min. TX Start TX OFF Backlight ON Tx Start TxOFF (Time used) (Action) Countdown start -- What happens if a key is pressed after a SLEEP mode setting? If a transmission is conducted and a key is pressed after setting a SLEEP mode, power-saving mode is entered 30 seconds after key is pressed. -- What happens if a key is pressed during the SLEEP mode? a) If a key is pressed during the power-saving mode, the SLEEP function is canceled and the 2minute timer starts. b) If a key is pressed while the 2-minute timer is in use, or during transmission , the SLEEP function is canceled. 53 5.5.3 Echo Menu ××× = keys to press Adjustment options to be conducted on the echoes displayed on the screen (Up to the point when "ECHO" menu is selected ・Common operations for the ECHO menu from the main menu) Press the "MENU" key and select "ECHO" from the displayed 4 main menus using the left-right cursor. (The contents of the selected MENU will appear on a pull-down display in accordance with the movement of the left-right cursor.) MENU ――> Left/Right (Select ECHO) When the above-mentioned operations have been conducted, the items of the ECHO menu are vertically displayed. Further explanation about the ECHO menu will be conducted on the assumption that this "common operation for the ECHO menu" has already been completed. ECHO .25 HU MARK AT ECHO NAV ▼ ▼ ▼ ▼ GAIN 0.23 NM STC FTC TUNE ST SETUP ▼▼ ▼ ▼ ▼ .75 A U T M A N 5.5.3.1 Sensibility adjustment (GAIN) (1) Use the up-down cursor keys to select GAIN from among the pull-down display items, and press either the "ENT" key or the right cursor key. (2) Select MANU from the MANU/AUTO display beside the GAIN item using the up-down cursor keys, and press the "ENT" key. (3) The present state of GAIN is displayed in reverse on the screen left as G 35 and an adjustable state is entered. G 6 When the control knob are operated in this state, the figure 5 alternates within a range of 0 and 99 and the GAIN can thus be adjusted. (4) The adjustment is completed by pressing the "ENT" key after adjustment. When AUTO action is to be entered, select AUTO in (2) and press the "ENT" key to complete the setting. The setting value is displayed during MANUAL operation. AT is displayed during AUTO operation. (The same applies to STC, FTC and TUNE.) 54 Up/Down −> ENT −> Up/Down (Select GAIN) └>(Select MANU) −> Control knob −> ENT --- Set to MANU mode | (GAIN adjustment) −> ENT ---------------------Set to AUTO mode └>(Select AUTO) 5.5.3.2 Removing sea clutter (STC) Refer to the section, “Sensibility adjustment (GAIN)”. Up/Down −> ENT −> Up/Down (Select STC) └>(Select MANU) −> ENT −> Control knob −> ENT Set to MANU mode | (STC adjustment) └>(Select AUTO) −> ENT ----------------------------Set to AUTO mode └>(Select HARBOR)−> ENT -------------------------------------------- Set to HARBOR mode Note: When you select MANU mode, GAIN and FTC will be switched to MANU mode, too. Note: When you select HARBOR mode, FTC will be switched to MANU mode. 5.5.3.3 Removing rain and snow clutter (FTC) Refer to the section, “Sensibility adjustment (GAIN)”. Up/Down −> ENT −> Up/Down (Select FTC) └>(Select MANU) −> ENT −> Control knob −> ENT Set to MANU mode | (FTC adjustment) └>(Select AUTO) −> ENT ----------------------------Set to AUTO mode 5.5.3.4 Adjusting receiver tuning (TUNE) Refer to the section, “Sensibility adjustment (GAIN)”. Up/Down −> ENT −> Up/Down (Select TUNE) └>(Select MANU) −> ENT −> Control knob −> ENT Set to MANU mode | (TUNE adjustment) └>(Select AUTO) −> ENT ----------------------------Set to AUTO mode 35 Indicated setting value on manual mode, AT on auto mode 55 5.5.3.5 Echo expansion (ST) Expanding the echo to the direction of the distance. Two types of echo expansion exist, select ST1 or ST2 from the menu. (1) Use the up-down cursor keys to select ST from among the pull-down display items, and press the "ENT" key. (2) Select ST1 or ST2 from the display beside the ST item using the up-down cursor keys, and press the "ENT" key. Up/Down −> ENT −> Up/Down −> (select ST1) ・・・・・・・・・・・・・・・・・・・・ −> ENT └> (select ST2) ・・・・・・・・・・・・・・・・・・・・・−> ENT └> (select OFF) ・・・・・・・・・・・・・・・・・・・・・−> ENT set ST1 set ST2 ST OFF ( expansion rate ST1
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