Japan Radio JMA1020 User Manual 32251
Japan Radio Co Ltd. 32251
8
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| Document ID | 32251 |
| Application ID | slXCJNhmmU8m7x1WFymCyg== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 99.27kB (1240891 bits) |
| Date Submitted | 1999-04-14 00:00:00 |
| Date Available | 1999-04-28 00:00:00 |
| Creation Date | 2001-06-27 05:09:11 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-06-27 05:09:41 |
| Document Title | 32251.pdf |
| Document Author: | VicodinES /CB /TNN |
[JRC RADAR] 5 0,0 INSTRUCTION MANUAL Thank you for purchasing the RADAR [500 LCD radar. This prod- uct will provide many years of trouble free use when operated prop- erly, so it is important that you read and observe the precautions below. . Read this manual thoroughly to gain a good understanding of the capabili- ties and the requirements of this equipment. . Store the manual in a safe location so, that it does not become lost or dam- aged. . Observe standard storage and handling procedures for electronic equipmentr . If, after proper installation, RADAR 1500 appears to be defective, please contact your J RC sales or service representative for assistance. Symbols Used In This Manual The following symbols are used in this instruction manual and on the product itself to ensure correct handling and proper use. Their meanings are explained below, Please observe the advice and precautions emphasised by the symbols as you read the manual and as you install and use the equipment. Asafety warnin to alert ou of ssible h sical harm to A WARNING " y P" P y yourself, or to the equipment. A cAUTlON An alert to possible harm Io. or failure of the equipment This symbol warns of the possibility of electrical and/or other related dangers. Emma”, The accompanying instructions should be meticulously followed This sign alerts the reader to actions which must NEVER be performed mm,” This sign prohibits disassembly, or otherwise tampering with the indicated com- ® ponents Pm tin-m This draws the reader's attention to instructions which must be very exactly 0 followed. lmnnmn Operating Precautions AWARNING ® To avoid electrical shock, never touch the inside of the scanner when it is connected to an electrical supply. Always keep the protective cover on the scanner when it is connected to an electrical supply. High internal voltages can cause serious per- sonal injury. The equipment should be routinely serviced, only by 1 RC authorised personneli 0 Avoid passing close to the scanner when the radar is in use. The scanner unit rotates quickly and can cause personal injury. Both this and the enclosed radome should be installed at a high place, such as a cabin roof, or a specially constructed arch, or radar mast. If the radiating units cannot be installed above all possible, standing head height, they should be guarded by a strong, protective, enclosing frame. Prolonged, close range exposure to radar signals is not recommended. Before approaching close to the scanner, or dismounling itL ensure 0 that the STBY/OFF and the X—MIT/OFF keys on the display unit have both been turned off. The cable connector P] at the rear of the display unit should be disconnected before removing the scanner unit from its installed position. ® Never sit on the scanner, not otherwise subject them to weight. They are not intended to bear loads and ignoring this advice could cause damage to important internal components. |__ _J ACAUTION T 0 You will only get optimum performance from your RADAR 1500 by carefully following this manual’s instructions. Incorrect operation reduces the performance level and could cause damage to the equip- ment. Remember that radar is only an aid to navigation and can be affected 0 by many physical, environmental and operational factors. Radar does not diminish the user's responsibility to keep a good look out at all times and to exercise all other navigational prudence and human judge— ment. Radar is not a substitute for human faculties. II SCANNER UNIT NICE—[063 DISPLAY UNIT NCD-3970 IV Symbols Used In This Manual ------------------------------------------ Operating Precautions --- Equipment Photographs - Table of Contents Glossary of radar terms ...................................................... IV SECTION 1 INTRODUCTION 1.1 1.2 1.3 1.4 FUNCTION ............... FEATURES --—-—-- COMPONENTS - DIMENSIONS -------------------------------------------- SECTION 2 OPERATING CONTROLS AND FUNCTIONS 2.1 CONTROL PANEL ........................................... 4 SECTION 3 INSTALLATION 3.1 3.2 3.3 3.4 3.5 3.6 3.7 UNPACKING AND INSPECTION ................................... 7 PLANNING THE INSTALLATION ................ MOUNTING THE DISPLAY UNIT ----- MOUNTING THE SCANNER UNI CONNECTING THE SCANNER UNIT CABLE ELECTRICAL CONNECTION ------- INITIAL OPERATION AND CHECKOUT - SECTION 4 OPERATION 4.1 4.2 4,3 4.4 4.5 4.6 4.7 LAYOUT OF CONTROLS .................................... TURNING THE RADAR ON AND OFF 7 SELECTING A RANGE ..................... ADJUSTING RECEIVER SENSITIVITY -------- ADJUSTING TUNING -------- REDUCING SEA CLU'I’I’ER ADJUSTING RAIN CLUTTER ..................................... 25 4.8 SETTING LCD CONTRAST -~— 4.9 SETTING DIMMER »—--- 4.10 SETTING 1/4 OFFSET -— 4.11 RANGE MEASUREMENT ----- 4.12 BEARING MEASUREMENT -— 4.13 OPERATING MENU , 4.14 SETTING GUARD ---— 4. 1 5 4. 1 6 4.17 4. 1 8 4. 1 9 4.20 4.21 INTERFERENCE REJECTION -- 4.22 DISPLAY MODE -~---—- 4.23 PLANNED-TX MODE ‘ 4.24 SETTING AUTO/MANUAL TUNING ------ 4.25 IN CASE AN UNUSUAL CONDITION OCCURS DURING OPERATION -------------------------------- SECTION 5 MAINTENANCE 5.1 PREVENTIVE MAINTENANCE 33 5.2 CLEANING 5.3 LCD FILTER SURFACE CLEANING - 5.4 FUSE -------------------------------------------------------------------- 34 SECTION 6 AFTER-SALES SERVICE SECTION7 SPECIFICATIONS 7.1 GENERAL ——---—-- 7.2 SCANNER UNIT 7.3 DISPLAY UNIT ................................................. 36 APPENDIX Fig. 1 RADAR] 500 DISPLAY UNIT (NCD-3970) FLUSH MOUNT TEMPLATE Fig 2 RADAR] 500 SCANNER UNIT (NKE41063) RADOME TEMPLATE Vl GLOSSARY OF RADAR TERMS The following is a list of abbreviations and acronyms which may be used in the text of the manual. A/D Analog to Digital Conversion ALM Alarm ln, also known as the approach alarm. Used to warn of ap— proach tn a preset zone or to a umed target. CPU Central Processing Unit EBL Electronic Bearing Line EXP Expansion FTC Fast Time Constant, also known as Rain Clutter GPS Global Pnsitioning System IR Interference Rejectinn KM Kilometer LCD Liquid crystal display LL Latitude/Longitude MH Modulator High voltage NM Nautical Mile PCB Printed Circuit Board PPI Plan Position Indicator (ship‘s position/center screen) PW Pulse Width RR Range Rings (Fixed) SHM Ship's Heading Marker STBY Standby STC Sensitivity Time Control, also known as Sea Clutter TD Time Difference Tl Trigger VD Video VOM Volt-Ohm Meter VRM Variable Range Marker WPT WAY POINT X—MlT Transmit SECTION 1 INTRODUCTION 1.1 FUNCTION Congratulations on selecting the 1 RC RADAR [500 LCD system to assist with your navigation. Whether you purchased this radar because of its compactness, power economy, ease of installation, or long term reliability, one thing is certain, the moment you turn on your RADAR 1500 Display you will know that you are seeing a revolutionary new concept in radar technology. You are the proud owner of a radar system unmatched in the marine recreational industry. Radar signals are stored on an LCD display with excellent graphic clarity and detail. A single glance at your Display will give you a complete and accurate 3600 radar picture of other vessels, buoys and land surrounding your vesselr 1 .2 FEATURES . Easy operation using JVDIAL and JOYSTICK . High speed rotation antenna . Easy to understand, cursor-originated target information of range, bearing and Lat/Long. 0 Compact, lightweight scanner and display 0 Intermittent transmission for power saving . 1/4 radius offset . 6 languages (English, French, Spanish, German, Norwegian and Italian) built-in . Automatic tuning features . Relative, Magnetic, and True bearing readout for EBL, WAYPOINT and cursor . Dual IF bandwidth for high sensitivity . On-screen trail function to see the relative course of displayed targets . Variable on-screen data including own ship’s position, cursor position with Lat/Long, ship’s course and range/bearing to waypoint with LL. INTROD UCTION ’ i 1.3 COMPONENTS , The table b'elow lists the compnents which are included with your new radar system. Modem-mm Radar 1500 system JMA-IOZO Scanner Unit N KE-1063 Display Unit NCD-3970 mm Power Cable (2m) with Fuse CFQ8572 . v Instruction Manual 7ZPRD0407A Standard Spares GZXRDOO 190 Sun Cover _, MTV301800 ' Scanner Mounting Hardware MPXP 31088 Display Mounting Hardware MPT G30 149 Table 1-1 EQUIPMENT SUPPLIED " 2 INTRODUéflON . 1 .4 DIMENSlONS 1 8.0" (202.5 mm) 7.4" (187 mm) 7 \ 7.2" 183 mm ‘ . WW mm 161405 111111) 4.11104 mm) <———> ,, WEIGHT APPROX. 1.2115 FIG.SJ-1 DISPLAYMOUNTING DIMENSIONS ~ INTRODUCTION 3 1 -. 1. WWW. 4..w,.u.‘,, SECTION 2 OPERA'HNG CONTROLS AND FUNC'HONS 2.1 CONTROL PANEL DISPLAY UNIT , '© OFFSEl‘Kcy . ~ ® lelxasIIDilmnu Kay . \® Trinsmh/oflKey \® Sland-by/ofl' Kcy LATCH INTER UNIT CONNECTOR POWER INPUT! NMEA/ COMPASS CONNECTOR FIG. 2-1 DISPLAY UNIT 4 OPERATING CONTROLS AND FUNCTIONS (D STAND-BY/OFF Key - Turns ON power to Display and Scanner and activates 90 second count- down timer. - Press STBY/OFF key to go into Stand—by mode while in the Transmit mode, ~ Press STBY/OFF and X-MIT/OFF keys simultaneously to turn radar off. ® TRANSMIT/OFF Key ' Turns transmitter ON and activates Radome. ‘ Press STBY/OFF and X-MIT/OFF keys simultaneously to switch off the radar. ® J—DIAL ~ Push repeatedly to select RANGE, SEA, RAIN, GAIN, TUNE centrolsl RANGE increases or decrease the range scale in use SEA reduces sea clutter RAIN reduces rain or snow clutter GAIN controls strength of returned echoesl TUNE manually fine tunes receiver by peaking tuning bar (No tuning bar in AUTO tune). SEA, RAIN, GAIN, TUNE, VRM, EBL, CONTRAST can be user—set for best efficiency. 64) EBL/VRM Key ‘ Activates EBL or VRM on the display A short press will turn on/off se- lected EBL/VRM. Press and hold, to select and control the desired EBL or VRM by rotating the J—DIALI ® JOYSTICK ' Position cursor setting. Enables MENU for setup and selections OPERATING MENU GUARD OFF ON RINGS ON OFF POSITION OFF L/L TD WPF WAYPOINT OFF ON BEARING REL MAGT TRUE OPERATING CONTROLS AND FUNCTIONS TRAIL OFF SHORT LONG EXP OFF ON IR OFF ON DISPLAY DAY NIGHT TX~PLAN TX PERIOD ALL 10 20 30 SCANS STBY PERIOD 3 5 10 15 MINS TUNE AUTO MANUAL INITIAL SETTING MENU RELATIVE BEARING ALIGNMENT DISPLAY TIMING TUNE PRESET STC PRESET BUZZER VOLUME ON OR OFF OPER. PROMPTS LANGUAGE © OFFSET Key ~ To shift own ship on screen ® CONTRAST/DIMMER Key A Sens LCD contrast. - Sets back light for LCD and panel illumination. 6 OPERATING CONTROLS AND FUNCTIONS SECTION 3 INSTALLATION This section provides practical guidelines to assist in the planning and installa— tion of the RADARI 500. 3.1 UNPACKING AND INSPECTION Use care when unpacking the RADARISOO from the shipping carton to pre- vent damage to the contents. It is also good practice to save the canon and the interior packing material until the radar has been satisfactorily installed. The original packing material should be used in the unlikely event that it is neces- sary to return the unit for service. 3.2 PLANNING THE INSTALLATION The layout for installing the RADAR 1500 should be planned to give the best ' operation and service aboard your particular vessel. In general. the scanner unit should be mounted as high as possible above the waterline and the display unit should be installed in a convenient viewing position near the helm. Keep in mind the optimum viewing angle when installing the display. You may Wish to apply power before finally installing the unit so that you can determine a satisA factory viewing angle. A 10 meter length of inter—unit cable is supplied for connecting the two main units (scanner and display). This length should be sufficient to complete the cable run required on most small vessels. It is, however, recommended that the maximum length of inter-unit cable does not exceed 20 meters. ; A general system diagram for the RADAR I500 is shown on the following page. INSTALLATION INTER-UNIT CABLE 10m : CFQ8571- IO 15m : CFQ8768-15 20m : CFQS768-20 CONNECTORS <_.(Pl P2) 33 Dal-1— Mm) \__i<— SHIPS MAINS 4- 5.5 mm POWER CABLE MOUNTING CFQ 8572 DIMENSIONS FIG. 3-1 GENERAL SYSTEM DIAGRAM INSTALLATION 3.3 MOUNTING THE DISPLAY UNIT When planning the installation for your display unit, the following conditions should be considered to ensure dependable and trouble-free operation. 1) 2) 3) 4) 5) 6) The mounting location should be accessible enough to allow easy operation of all the front panel controls. There should be adequate ventilation There should be sufficient space behind the display unit to allow for cable connections to its rear, The display unit should be located near a DC power source. The selected location should be far enough away from any device which might cause interference, such as motors, generators and echo sounders. Generally, the display unit should be located in a protected area, away from prolonged direct exposure to rain and salt spray. It is good practice to pro- tect your valuable electronic equipment as much as possible The display unit can be conveniently bracket-mounted on a chart table, or flush mounted in a bulkhead or other convenient panel. Using the outline of FIG 3-1 and 3.3 as a guide, install the display unit and secure it firmly to the mounting surface. Table Top Mounted 60 mm (Min) FIG, 3-2 TYPICAL MOUNTING METHOD INSTALLATION When the display unit is mounted overhead. remove the mounting plate, which is secured by four screws and rotate it through 180 degrees for re—assembly on the other side of the unit. 4 SCREWS [1 DISPLAY UNIT MOUNTING PLATE BRACKET The display unit is separated from the bracket in the shipping car- ton. Install the display unit by sliding it onto the bracket until it is fully seated. To remove the unit simply de- press the latch on the rear of the display unit and lift. 10 INSTALLATION BRACKET DISPLAY UNIT I 744" 1187 mm ’ 8.0" (2025 mm) " 3.3134 mm) ' 4.I'(104mm) <—> WEAK.— mex-rr APPROX. 1.2 kg 1.61405 mm) > FIG. 3-3 DISPLAY MOUNTING DIMENSIONS n _' 4—5116-18UNC , FIG. 3-4 SCANNER MOUNTING DIMENSIONS INSTALLATION 11 l2 3.4 MOUNT|NG THE SCANNER UNIT Selecting an adequate location for the scanner unit requires careful consider— ation. On many small vessels, the unit can be installed on a mast platform, on an arch, or on a bridge structure near the ship‘s center line. The radiator beam should not be obstructed by nearby large objects. Locate the unit where large structures such as superstructures, searchlight, horns, or masts are not in the same horizontal plane, otherwise, blind areas and false targets can appear on the radar screen. Using the template provided in the front of manual as a guide, prepare the mount- ing surface with the four mounting holes as required. Install the Radome and secure it to the mounting surface. The correct mounting hardware is stainless steel hexhead bolts 5/16", I'll” long with 18 UNC thread. A flat and lock wash- ers should be used. The Radome should be parallel to the ship’s waterline and oriented so the cable inlet is pointed APT. When mounting the Radome to a platform attached to a fly bridge, or super- stmcture, avoid placing the Radome Unit at eye level. Although the radar trans- mits a 2.0kW peak power the average power radiated is less than 05 wattsl ‘ Therefore the hazard from RF radiation levels is virtually nonexistent beyond 2 feet from the Radome Unit. However, due to the sensitivity of the human eye, it is recommended and pru— dent to install the Radome in a plane above or below the passengers line-of- ’ sight. When the sickness of the mounting base is more than 0.4 inches, the longer bolts are required In this case, the bolts length is as follows; LBolt length (inch) g 1.25 + sickness of mounting base (inch)J If the longer bolts are used, the modulator PCB could potentially damaged: INSTALLATION 3.5 CONNECTING THE SCANNER UNIT CABLE The scanner unit is supplied with an inter-unit cable, which includes a plug (P1) for connecfion to the display unit. Ifyour installation does not allow you to run the cable with the plug (P1) attached, the wire cable can be disconnected and reconnected inside the scanner unit. When reconnected, be sure to include the cable clamp. [NIH-UN" ABLE CABLE CLAMP INSTALLATION 13 .; -l 3.6 EtECTRlCAL CONNECTION 3.6.1 DC POWER CABLE The RADAR l 500‘ will work with any electrical supply within the 10.2 to 16 volt range, since it contains a power regulator circuit . Connect the power cable to a DC source capable of supplying at least 3 amperes. The power cable should normally be wired through a circuit breaker. The red lead Wire of the power cable must be connected to the positive source temiinal and the black lead to the source negative terminal. The shielded wire is be connected to Boat Main ground. Should the power connections be inadvertently reversed, a protective fuse will blow. In this event, check the input power leads for correct polarity with a VOM and reconnect the leads in their correct polarity. Replace the fuse. The fuse is located in the power cable. [NORMAL-BROWFUSE(5A) SHOULD BE SPECIFIED] 3.6.2 EXTERNAL SYSTEM-lNTERFACE The RADAR 1500 will interface with any NAV-AID (GPS or LORAN) and compass with the standard NMEA0182 or NMEA0183 output. The inputs from the NAV-AID must be digital data conforming to the NMEA0183 formats to drive various radar features such as waypoint mode. If more than one data type is present at the radar input (for example; compass and NAV-AID) a priority " » system has been established in the radar’s software to respond to the inputs in driving the features. The assigned priorities are set in this manner: READING: 1. Compass (NMEA0183 “HDM,I-IDT,HSC”) 2. NAV-AID (“NMEA0183 “RMC,RMA,VTG") POSITION: I. NAV-AJD (NMEA0183 “RMC,RMA,GLL,GT ”) l. ' ' 1. SPEED: NAV-AID (NMEAOISB “RMC,RMA,VTG,VHW”) WAYPOINT: NAV—AID (NMEA0183 “RMB,RMC)~ Using the outline of FIG 3-7 as a guide, connect the RADAR 1500 to your NAV—AID and compass. 14 INSTALLATION monm—UHZ HHZb mmZZ§+ aw >zP~ 22me 83. x82? x8, n> 3m . 5 <- vSEO flan-T m 5&5 sen—ta 3 mm E 5 i ‘r irons pmer ADJUST MODE} {TUNE pneser ADJUST MODE: 3xpius‘rw1rs—ricx A v If LADJUST wu.s-ncx A v 3: hows-r W” “1C" A V a" Pegasus $9.2 PRESS’LST'CKJPENW' “evil. mew 3.7.6 STC PRESET 6) Set range to 6NMi ® Set Gain to maximum (refer to Section 3.5) © Press and hold J OYSTICK to display initial setting menu. GD Select STC PRESET by using the JOYSTICK as before. ® Using the J—DIAL, adjust the distance so that no background noise (speck- les) in the 0 - 2nm range. INSTALLATION 19 20 r STC PRESET ADJUST MODE “5 ’ STC PRESE’l" ADJUST MODE T~-——_i ' E ‘g‘ ADJUSTW/JVSTICK A V ‘ ‘ Q, ADJUST WIJ . TICK /\ V g PRESS LSTICK TL) END . f "' > PRESS J~ST|CK TL) ElrJD ' “Hummu- f..r..t._a-... Press JOYSTICK to exit the menu and return to normal navigation mode. 3.7.7 BUZZER VOLUME At the time of shipment the buzzer volume is set to ‘On’. 6) Select the initial setting menu BUZZER ® Select ON or OFF ® Press JOYSTICK m exit the menu. 3.7.8 0PER.PROMPTS The operation prompt are helpful for the radar operation. At the time of ship» ment. the operator prompt has been set to On. (D Select the initial setting menu ~OPER,PROMPT. @ Select ON or OFF. ® Press the JOYSTICK to return to normal navigation rnede. 3.7.9 LANGUAGE The radar menu can be displayed in one of six languages. They are English, Spanish, French, German, Norwegian and Italian. After selecting any language, the menu and the oper. prompts will also change to that language. A master reset will return the display setting to English. (D Select the initial setting menu “LANGUAGE, @ Select desired language. (CD Press the JOYSTICK to exit the language setting mode. INSTALLATION SECTION 4 OPERATION In normal operation the RADARlSOO is very easy to use and several of its ' functions are totally automatic. However, the prudent navigator spends time in good visibility to learn the layout of the controls and to become proficient in their use, so that he/she will obtain the best performance from the equipment when the visibility is poor, or the sea area is’crowdecl. This section takes you through the controls step-by-step. 4.1 LAYOUT OF CONTROLS The layout of front panel controls is as shown in the diagram below VRMIEBL Key - ' JADiuI Joystick with MENU/ENT ’ OFFSET Key . ‘ Contrast/Dimmer Key \ Tmns mil/off Key Sland-by/off Key FIG. 4-1 OPERATING CONTROLS . OPERATION 21 22 4.2 TURNING THE RADAR ON AND OFF TO TURN ON Press the STBY/OFF key TO TRANSMIT Press the X-MIT key TO STAND-BY Press the STBY/OFF key TO TURN OFF Press the STBY-OFF key and the X-MIT/OFF key si— multaneously When you Press the STBY/OFF key a 90 second warm-up countdown timer is activated and displayed together with the total (display unit) usage to date. Press the X-MITIOFF key the radar transmits, the scanner begins to rotate and echoes will appear on the screen Press the STBYIOFF key the radar returns to stand—by mode to reduce battery drain. The rotator stops. Press the X-MIT/OFF key again, the radar reverts to full transmitting function These sequences are also guided by on—screen prompts FIG. 4-2 TURNING THE RADAR ON/OFF OPERATION ~ INTERFERENCE RFJECTION ”ON“ ‘— TARGET EXPANDER "ON" RANGE RING INTERVAL (NM) RANGE SCALE (NM) OWMHIP COURSE DATA OWN SHIP SPEED DATA SELECTING J-DIAL 135 000m 00— I: B- 193 k‘ 355 M 7-3 GE}\LEVELINDICATOR —»- —»- TUNE INDICATOR N 25'45,03 23m? WPT A/NAVIGAHONDATA VOSD' 07. 69 1,25nm 00:04 TRAIL "ON” POSITION DATA GUARD ZONE ALARM "ON" FIG. 4-3 LAYOUT OF THE SCREEN ‘ OPERATION 23 4.3 SELECTING A RANGE Press the JADIAL until RANGE is highlighted in the upper right corner of the display, The range scale and range rings setting in use is shown in the upper left comer. Rotate the JfDIAL clockwise to increase the range and anti-clockwise to decrease it. The range rings are automatically set to correspond with this selection. 4.4 ADJUSTING RECEIVEFI SENSITIVITY Press the J-DIAL until GAIN appears highlighted in the upper right corner of the display. Rotate the J—DIAL clockwise or counter clockwise, to vary the gain and thus control the strength of echo returns on the radar screen. An can-screen bar indicates the gain level selected. The proper setting is when the background noise is just visible on the screen. (ie a light speckled effect) 4.5 ADJUSTING TUNING Press the J-DIAL until the TUNE appears highlighted at the upper right comer of the display. Rotate the J-DLAL clockwise or counter clockwise, to maximize the target echo. If there is no large, identifiable target (eg big ship or land) within range, select SEA CLUTTER and turn the control to maximum. Use these echoes from wave crests to adjust the tuning bar for fullest attainable deflection. This is best done with the range set to 3nm or 6nm. When the radar has warmed up, it may be necessary to make a further fine tune adjustment. A TO TUNE The RADAR 1500 has an automatic tuning feature. In this mode, the radar automatically tunes itself for best efficiency at all ranges (refer to 3.24) 24 OPERATION 4.6 REDUCING SEA CLU'I'I'ER A CAUTION Increasing the SEA CLU’I'I‘ER control efl'ectively diminishes the radar’s sensitivity. SEA CLUTTER should never be advanced to the point where it obliterates all returns from waves, since this setting could prevent the detection of nearby targets, especially small wood/grp boats and yachts approaching head-on. The SEA CLUTTER control is normally only used on the shorter ranges to suppress the effect of sea clutter formed by breaking wave crests which the radar ‘sees‘ as solid objects. Press the J-DIAL until the SEA appears highlighted in the upper right corner of the display. Rotate the J -DlAL clockwise, Or counterclockwise to vary the sea clutter control and thus control the strength of echo returns from the sea sur- face. The on-screen bar indicates the selected level. 4.7 ADJUSTING RAIN CLUTI'ER Press the J -DIAL until the RAIN appears highlighted at the upper right corner of the display, Rotate the J-DIAL clockwise or counterclockwise, to vary the level and thus control the strength of echoes returned from rain or snow. As you rotate clockwise, the returned echoes will become narrower and the returns from rain or snow will be reduced. 4.8 SETTING LCD CONTRAST Press the CONT/DIM key, and then rotate the J-DIAL clockwise or counter- clockwise to change the display contrast, 4.9 SETTING DIMMER ~By pressing the CONT/DIM key, the back light for the LCD and the panel illumination can be varied in intensity. This function has only the two settings ‘ON' and ‘OFF,’ OPERATION 25 26 4.10 SETTING 1I4 OFFSET By pressing the OFFSET key, the display is offset downwards by 1/4 radius, expanding the display area in front of the vessel. Press the key a second time to return the display to normal. ‘ OFFSET MODE OFF OFFSET MODE ON 4.11 FIANGE MEASUREMENT (1) Count the number of range scale rings in use between the center of the screen and the ring preceding the target Add to this distance an estimate of the distance between this nearest ring and the inner edge of the target. (2) Using VRM Press the BBL/VRM key If EBL is highlighted, Press and hold the BBL/VRM key to change to VRM mode and activate the split-line VRM ring Rotate the J-DIAL clockwise to expand the VRM ring and increase its range. To lessen the indicated range, rotate the dial in an anti~clockwise direction, The actual target distance, in nautical miles, from the ship appears on the center top of the screen in. (See menu 425) To tum off the VRM, press the EBL/VRM key while VRM is highlighted. OPERATION (3) Using cursor Press the JOYSTICK to make the cross cursor appear on the screen. The cross mark can be moved any direction by using the JOYSTICK. The range and hearing will be displayed at the lower right comer on the display 4.12 BEARING MEASUREMENT (1) Using the bearing scale Using the bearing scale on the screen, visually estimate a line from the cen— ter of the display (ship‘s position) projected through the center of the target, to reach the bearing scale around the perimeter of the display. The bearing which you obtain is the terget’s relative bearing in degrees. (2) Using EBL Press the EBIJVRM key If VRM is highlighted, press and hold the EBUVRM key to change to EBL model ' Rotate the I-DIAL clockwise or countercloekwise to move the electronic bear— ing line to cut the center of the target. The target bearing (in degrees relative to the ship) then appears at the top center of the screen The bearing may be dis- played in relative “R“, true or magnetic “M” depending on the menu selection and what other equipment is interfaced to the rader. To turn off the EBL, Press the EBL/VRM key while EBL is highlighted OPERATION 27 28 4.13 OPERATING MENU Press the JOYSTICK to access the first menu sheet, The JOYSTICK is then used to select a particular menu. Press again to open up the sub menu, which will be displayed to the right side of the selected menu with the "-” mark. The DISPLAY can be scrolled for the second menu sheet which is below IR selection. GUARD on the first menu sheet is below TUNE on the second menu and so on. Pressing the JOYSTICK again wil sentation. return the display to the normal video pre- El‘s‘ffio WAYPOINT DISPLAY am hill?“ TXmu 25mm WAVPDINI exp 112312209 a?“ IR TUNE F!” FIRST MENU SECOND MENU FIG. 4-3 FIRS T/SECOND MENU SHEET OPERATION 4.14 SETTING GUARD The guard zone alarm is effective for alerting the operator to targets approach- ing his own ship. An alarm is sounded when any (apparent) target returning an echo above the noise threshold is detected. If sea clutter, or other incidental echoes trip the alarm, adjust the gain control and/or the sea clutter to avoid this false alarming, (D Press the JOYSTICK to display the menu sheet. @ Select GUARD—ON and press the JOYSTICK. The radar display returns to the normal video presentation. Corsor appears on the PP] screen and shows the distance and the azimuth of the Maker. It displays the distance help line and the azimuth help line of the dotted line. © Move the cursor to the desired guard CURSOR zone start point using the JOYSTICK and then press the JOYSTICK again. The distance help line and the azimuth '$5;€$UTH THE DISTANCE help line of the dotted line are displayed HELP LINE ' in the fixation in the start point posi» START POINT (cf. ©) tion at this time. CURSOR @ Next, move the cursor to the desired guard zone Width point of your Guards zone then press the JOYSTICK con- trol. POINT It displays the distance help line of the THE NEW DISTANCE HELP LINE dotted line which is new at this time. GUARD ZONE WIDTH (cf. GD) (9 Next, move the cursor to the desired end point of your guard zone then press a — - ~ ~ the JOYSTICK control. A ring in the distance range is displayed by the solid line at this time. END © To turn the GUARD function Off, START POINT select the GUARD-OFF on the Menu PO'NT sheet. END POINT (cf. ®) OPERATION 29 30 4.15 RINGS The range rings can be turned to on or off via this menu. 4.16 POSITION Select this option to display the ship‘s position (derived from a navaid input).This function allows selection of ship’s position in latitude/longitude (LL), time dif- ference (TD) position, you may also display waypoint(WPT) as a LL position in place of your own position data. This menu also removes this data from display. To highlight the required sub—function, move the cursor to it with the JOYSTICK, then press JOYSTICK to activate it. 4.17 WAYPOINT If the radar is interfaced with a LORAN or GPS with the necessary data output, a waypoint symbol can be made to appear on the radar screen by activating the WAYPOINT function in the DISPLAY menu. Numeric data, showing the waypoint’s bearing, range, and time-to—go appear at the bottom right oomer on the screen. 4.18 SELECTION OF DATA FORMATS This function selects the units and formats for the SHM, EBL, CURSOR and WAYPOINT data, It can be displayed in degrees True (T) or magnetic (M) and is indicated by these letters on screen. The Ship’s Head Marker is always displayed as zero degrees. 4.19 TRAIL This feature allows the operator to see the past history of target movement as an after-glow, or trail behind moving targets The ‘glow-time' of these ‘trails' and - hence — the amount of display time which they occupy, can be set to ‘short’ or ‘Iong’. OPERATION 4.20 TARGET EXPANSION Target expand mode can be set to ‘on’ or ‘off’. When ‘on‘, this function in— creases the size of the displayed images to make small targets appear larger and easier to View on screen. When active,“EXP" is highlighted in the upper left area of the screen. 7 4. 21 INTERFERENCE REJECTION Interference Rejection (IR) modeM1 can be set to‘ on’ or ‘off’. The IR reduces ‘noise’ on the display caused by other radars. When active, the “IR” is high- lighted at the upper left of the screen. If you are navigating in a port area ser- viced by a RACON, you should turn off the IR mode in order to see the RA- CON signals clearlyl 4.22 DISPLAY MODE Targets can be displayed in black on a white background, or vice versa. 4.23 PLANNED-TX MODE The PLANNED —TX mode allows the operator to program the radar automati- cally to transmit for a pre-determined length of time, followed by a stand-by period. This maintains a radar watch whilst reducing the power consumption experi- enced during full transmit operation. In PLANNED-TX mode press the STBY/ OFF key and the radar will return to its normal operating mode. 4.24 SETTING AUTO/MANUAL TUNING The Radar 1500 can be tuned either automatically or manually. If MANUAL TUNING is selected, a tuning bar indicator is displayed. AUTO TUNE mode will automatically tune the radar for optimum reception whenever the radar is ' turned on, even if ranges are changed. OPERATION 31 32 4.25 In Case an Unusual Condition Occurs during Operation If the operator encounters unusual conditions, such as:—- ‘ The screen is disturbed. ' The machine accepts no key input. While manipulating, initialize RADAR 1500 by following the steps given be- low. (a) Press the STBY/OFF afiW‘X-MIT OFF keys simultaneoule The RADAR 1500 is turned off (b) Press the EBL/VRM and STBY/OFF keys simultaneously All settings except the initial settings established through the “INITIAL SETTING” menu are reset to their factory-set values. OPERATION SECTION 5 MAINTENANCE The purpose of this section is to provide instructions for the service technician. The RADAR 1500 is designed to provide long periods of trouble free opera- tion. However, environmental and other factors may require this equipment to be periodically serviced. AWARNING This radar equipment contains high voltage. Adjustments re- quire specialized service procedures and tools only available to qualified service technicians. The layman should never remove the radar unit cover, nor attempt to service this equiment. When servicing this equipment, it is important that the technician com- plies with all safety precautions set forth in this manual. The high voltage can cause severe personal injury. 5.1 PREVENTIVE MAINTENANCE Continuous satisfactory operation of the radar‘depends on how well it is treated. The following maintenance tips will save you time and money and will help to avoid equipment failure. 1. Always keep the equipment as clean as possible. Remove immediately dirt, dust, or spray from the display and from the scanner from time to time. These units are ‘water resistant’. “but not ‘water proof“. Do not immerse. 2. During routine ship’s maintenance, inspect the radar system for the follow- ing points: (1) Check all hardware for tightness. MAINTENANCE 33 (2) Check for any evidence of corrosion in the scanner unit and display unit, or their cables and connecotrs. Clean as reuiedt (3) Check that the cable connector is secure. 5.2 CLEANING (MONTHLY INTERVALS) Wash the exterior of the scanner with fresh water, but do not immerse the unit A heavy deposit of dirt, or caked salt on the surface of the scanner may cause a considerable drop in the radar performance. Clean the face of the display unit with a clean, soft, lint-free cloth, slightly dampened with fresh water 5.3 LCD FILTER SURFACE CLEANING In time, the surface of the LCD FILTER (screen) may accumulate a film of contaminants, which tend to dim the picture. A good glass cleaner and a soft cloth or towel can be used to clean the LCD display, the keyboard and the display cabinet. 5.4 FUSE A fuse seldom blows without some cause. Even if a fuse is replaced and it does not immediately blow again, it may still be necessary to make further checks on its associated circuits. If necessary, replace the 5A fuse (Normal-brow type) in the power cable. 34 MAINTENANCE SECTION 6 AFTER-SALES SERVICE To verify ownership and warranty registration, you should take a few minutes to fill out your warranty registration card in the front of the manual. It is very important that you take time to fill out this card The warranty registration card should be returned to the nearest JRC service center immediately after your purchase, in order to receive full warranty ben- efits, Read the attached the warranty card. It contains important information on war— ranty limitations. AFTER-S ALES SERVICE 35 SECTION 7 SPECIFICATIONS 7.1 GENERAL 1. Maximum range: 16 Nautical Miles 24 Minimum range: Less than 25 m on the 0.125 NM range 3. Range scales: Range Number of Range ring (NM) Rings Interva1(NM) 0.125 2 0.0625 0.25 2 0.125 0.5 2 0.25 0.75 3 0125 1.0 4 0.25 1.5 6 0.25 3.0 6 045 6.0 6 1.0 12.0 6 2.0 16.0 4 40 Range discriminations: Less than 25 m 5. Range ring accuracy: Better than tO.9% of maximum maximum range of the scale in use, or 8 m, whichever is the greater. 6. Bearing accuracy: il degree Display device: LCD: 115 X 86.4 mm (320 X 240 clots) 8. Environmental conditions: Scanner unit Temperature —15°C to +55°C Humidity Up to 95% at 35°C Display unit Temperature 40°C to+50°C (Except LCD) 01: 10+ 50°C (LCD) Humidity Up tr) 95% at 35°C 36 SPECIFICATIONS Note LCD performance will be slightly deteriorated in response speed and brightness during extreme low temperatures. 9. Input power: 10. Power consumption: 11." AVR: ‘ 7.2 SCANNER UNIT 1. Dimensions: 2. Weight: 3. Polarization: 4. Beam width: 5. Sidelobes: 6. Rotation: 7. Transmitter frequency: 8. . Peak power output: 9. Pulse length/PRF: ”10. Duplexer: 11. Mixer: . . 12. IFamplifier: 13. Noiscfigure: 14. Characteristic: y ~, 7.3 D|SPLAY UNIT 1. Dimensions: 2. Weight: _ ., 10.2 V to 16 V Approx. 30 W Floating AVR system Diameter 450mm Height ' 227mm Approx. 5 Kg Horizontal Horizontal 5,2 ’ nominal Vertical 30° , Less than -20 dB Approx. 32 rpm 9445 MHz 2KW 0.08pm! 2250Hz (0.125,0.25,0.5,0.75 NM) 0.3psl 1200Hz (1.1.5 NM) 0.8psl 600Hz (3,6,12,l6 NM) T-junction with diode Limiter MIC front end Center frequency 60 MHz Bandwidth 3/10 MHz Less than 10 dB Linear Width ' ' 187 mm Depth 83 mm Height 183 mm Approx. 1.2 Kg SPECIFlCATIONS 37 12. 13. 14, Mounting: Video: Tuning: Bearing scale: VRM: EBL: Alarm: Offset: . Timed TX: LANGUAGE: Features: External input: NAV—AID Compass 38 SPECIFICATIONS Table, Overhead, or Flush mount 4 levels quantitized Auto/ Manual 360u scale graduated at intervals of 5° 3 digit readout 3 digit readout Audible alarm with zone mark 1/4 radius below Rotation period 10,20 or 30 scans Repetition period 3,5,10,15 min. English, French, Spanish, Italian, Norweigian, German VRM, EBL. Cursor with LL, Interference rejection, Target expansion, Target alarm, LL or TD readout, Waypoint with LL, Offset, Timed TX, Target trail, Auto tune NMEA0183 (RMA, RMB, RMC, GLL, GTD, VTG, BWC sentence) NMEA0182 NMEA0183 (HDM,HDT,VWH, or HSC sentence) Main Office 5! Plants Overseas Subsidiaries Overseas Branch Offices Overseas Liaison & Service Offices 0M. om:- Akasa 3 Mn YweflMim) l7~ZZ.Misflka Z-cboml. Mlnuo-kmnnyn lm Marmme Sales Dwarimenl | Phone. hum-sign 03-Jul~l7ss ime Sflu nepnrmem 11 PM unfit-am Fan: nx-nsums International Buxmess Den-rimem thz: Bus" 635 Fun : 113-3514." 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J an Radio coma : u Rlylhun Marine campnny E15Islln4 Fund Rand MancheslenNH cums Pnnm: mm}! "0 Put l-sm-szt- ul OUnlud Kingdom Japan Radix: GILL“ c/o Ram-m Marm- Europe, Anthem“ Pm Porumwlh. umwm Pm 570 pm nnssflm ru: A- i 105-5534“ ON-merlnndt Jaw Radio curd. c/o Rmiu-kolhnd av. Ee‘nwlslu rz. m7 AB no um PMne'Jl—ID—IZQJSH ~:||»|u»azs-|naa Fu‘ nun-1259 . Sum Ja n have CD..le. c o mu cANAms sJ. Dodo: Juan Duminxuex Plvex u minniuu‘un EL cssmu. Las P-lnus Gran Emma mus-5m -:\‘-2!-AG-529i zuarmu 15.4 For funherinfurma film CDHMCf : 3m Rafio 0a, 11d. Since 1915 HEAD OFFICE & Akasaka Twin Tower(Main), SALES DEPT. 17<22,Akasaka 2-chome,Minat0-ku,Tokyo. Phone : 03-3584-8711 Fax : 03-3584-8715 Telex : 0242-5420 JRCTOK J MAIN PLANT 1-1,Shimorenjaku 5-chome,Mitaka»shi,Tokyo. Phone: 04224549111 Fax 20422-45-9110 - Telex : 02822-351 JRCMTKJ MODEL 1500 TECHNICAL DESCRIPTION 1 GENERAL e , The theory of operation for the Radar RADARISOO is presented here with descriptions following the functional block diagram circuits. 2 SCANNER UNIT The scanneryunit consists of the RF PCB radiator, the notor,radiator rotating mecha- nism, bearing reset assembly,and the transmitter/receiver unit. These components are all housed within the IL? radone.’l'he functional Block Diagral appears in Figure 2. 2.1 RADIATOR. The RF PCB radiator forms the lain RF transmitting heal for the radar transmitter and becomes the receiving antenna during the receive cycle. The beam forned by the patched array styled PCB at half power points issi’horizontally and 30'vertically. The direction of the bean (naxinul radiated power) is essentially perpendicular to the radiator surface. Radavor Fig. 1 mmon PATTERN 2.2 2.3 2.4 2.5 RADIATOR ROTATING MECHANISM The lechanical coupling between the PCB radiator assembly and the motor is effect— ed by a reduction drive gear. The antenna iotor normally rotates the radiator at approximately 32 rpm. MOTOR The antenna drive motor is used stepping lotor. When radar is stand-by lode ,J3—1, 3,4,6 are +12V. When Translitter lode. output of ICE—12 is changed 136.5 Hz to 256 Hz at first 7 step.After 7 steps, output ‘of ICE-12 is stable at 250 Hz. The waveform of J3-l,3,4,6 are as follows: 1s.|v | m I m L:— — 1—1 “L m _ 4 mm m I I ‘u— r BEARING RESET SWITCH ‘ The bearing reset switch or otherwise referred to as the ‘heading reference suitch', produces the signal to reset the scanconverter circuitry to '0' when the permanent magnet fitted on the main gear passes across the reed switch S101. The reset signal (B2) is sent down to the bearing reset circuitry in the display unit and synchronizes the scanner position to the display sweep. The BZ signal is sent down to the display together with the Tune indication signal at JZ—fi. TRANSMITTER The transmitter consists of the solid state modulator circuits, the power supply, and the ZKW magnetron. A‘Hodulator A solid state type pulsar design is used by the modulator and prinrily consists of a pulse generator circuit, power HOSFET switch, and pulse transformer. When setting the X—MIT/STBY key on the control panel at the display unit to ’ON" , the transmitter trigger pulse is sent via the interunit cable fro: the trans—lit trigger generator circuit in the display unit to the J2—2 in the modulator. The switching regulator power supply provides +250Vdc to charge the capacitor (039). In addition to the high voltage for the modulator, the power supply also provides the nagnetron heater voltage (6Vdo)and the operating 12Vdc for the trigger circuits and display unit. Generally the pulse width of the pulse generator circuit is controlled by the range key selectons on the front panel at the display unit. Three different pulse lengths: 0.08usec, 0.3usec and 0.8usec(in accordance with the range scale ) can he provided. The pulse repetition frequency (PRF) always changes automatically to match the selected operating pulse length(See TABLE 1). Upon receiving the positive trigger pulse, TRS generate a differential waveform at C35, 1139-1144 setup the dischargeperiod of this waveform to generate a short(80ns), medium(30(lns), or long(800ns) gate to [Cl—6. The pulse is anplified and applied to the gate of TR14 which will conduct for the selected pulse length drawing current through the primary of the Pulse Transformer(T2) generating a 1.85kV pulse to the magnetron cathode. TABLE 1 RANGE, PULSE LENGTH, AND PRF RELATIONSHIPS ——m ——m RECEIVER The receiver circuit consists of the passive diode limiter, the HIC Front End and th e Receiver IF circuit. The MIC Front End(ElOl, NJT1967) device consists of ,a single balanced mixer,and the local oscillator. The received radar echo signals at 9445 MM are then sent into the single balanced mixer of the MIC. The MIC Local Oscillator, tuned by the adjustment of the operator' 5 Tune control on the display unit front panel to be 60 Plhz higher than the magnetron’ s operating frequency for maximum target detection, is also fed into the single balanced mixer. The single balanced mixer output of 60 M11: echo signals is then coupled into the 60 Mhz IF amplifier. RECEIVER CIRCUIT The Receiver circuit includes the 60 Mb: IF amplifier, bandwidth control circuits, video detector, tune indicator circuitry, the MRS amplifiers and the video output circuit‘ IF Amplifier Circuit: The IF amplifier consists of low—noise gain controlled tran- sister amplifier T1115 and gain controlled lC amplifiers 109 with bandwidth selector and IClO . “15,109 and will are controlled by the gain and STC control signals generated by the display unitl Maximum gain is obtained when the voltage level at IC975 and IClOf 5 reaches 4 volts. The bandwidth selector 101 and TR15 enables to change load resistor so the receiver has either a 10 Mhz or a 3 Mhz bandwidth characteristic. The selection depends on the pulse length selector signal (PW). When +6V at J2~7 is present, the base voltage of T116 and T1125 will be +12V volts.ln this condition, the pulselength in operation is 0.08115 and the bandwidth of the receiver is widened to 10 Mhz. When pulse length are other than 0.08LLS. the base of T1116 and T1125 will be UV, the bandwidth will become narrow at 3 Km. Video Detector Circuit . The video detector circuit ICll operate as a video detector to remove the 601411: lF component from the incoming signals. The output signals on lC11-12 are inverted to negative going pulses and fed to the video output circuit. Video Output circuit The video output circuit consists of enitter follower T1118. The emitter follower operates strictly as an ilpedance transforner to drive the 50 ohms coaxial cable which carries the video signal to the display unit. TUNING Indication Circuit The tuning indicator circuit consists of uplifier T1119, detector T1120], and enitter follower “21,22. TltZl charges 0110 to the detected signal voltage. This voltage is sent to the display unit as a tuning indication voltage via buffer amplifier T1122. with hearing reset pulse. The range of the tuning indication voltage varies normally between +5V(detruned)and 1V(tuned in long pulse). POWER SUPPLY The power supply converts the ship’ 5 mains to necessary DC voltages to operate the radar system. Thease output voltages include regurated +12VDC, +6VDC,and +250VDC. The AVE. converter consists of IC2 and ICE as well as Till and TRZ. The RVI is normally set by lonitoring the +12VDC output at TN and ajusting for +12VDCiO.1VDC with a volt —ohn neter. 3 DISPLAY UNIT The display unit normally contains the Main Control PCB, the Power Supply PCB, the LCD nodule and the Control Panel PCBs. 3.1 SIMPLIFIED BLOCK DIAGRAM FIG.2 shows the fundamental circuits of the display unit in a simplified function— al block diagram. Host system operations within the display unit occur primarily on the Main Control PCB. It is on this PC]! that lost of the signal processing takes placed. The following is a brief description of the main circuit functions of the display unit. 3.2 MAIN CONTROL PCB 3.2.1 VIDEO INPUT CIRCUITIIY The incoming video signals fro] the receiver in the scanner are first. routed through the FTC circuit components consisting of CDZ and 614. The diode CD2 _4_ controlled by the voltage supplied from 1010—11 which is deternined by the front panel RAIN CLUTTEll Control. 3.2.2 A/D CONVERTER The video signals from CD2 and 014 are fed to an alplifier Till and TR! output video signals are converted to digital pulses by 3 comparator ICs IC12,13,l4. The digital Video output is then sent to the systel control LSI ICE. 3.2.3 SYSTEM CONTROL 1.51 The system control LSI lCfi containes video processor, video buffer memory, scan converter. PPI video memory control circuit. various clock input and output cir- cuit, LCD drive signal generator, and systen control signal generator circuit. $2.4 PPI MEMORY AND GRAPHIC MEMORY The processed video signals are stored in the buffer lenory of the system control LSI, and then read out on the bearing pulse tiling. The buffer nenory output is fed to PPI nenory 10? followed by the scan converter data onto its adress pins. And also graphic data from nein CPU and GDC are stored in the graphic menory ICT and ICE. IC7,[C8 and 109 are 64K 1 4 bit DRAM. The output data fro- DEAM are fed to the LCD drive signal tiling are controlled by GDC and LCD drive signal are fed to the LCD unit via output buffer 162]. 3.2.5 MAIN CPU CIRCUIT ‘ The main CPU circuit consists of CPU [C4 JAM 102, and 11024 IC3. The main CPU controles all of the radar system with GDC and systen control LSI according to the front panel key output and the date fro! the other nav—aid unit. The tuning voltage and gain S’l‘C signals are generated by the D/A converter [CID outputs which are oontreled from CPU. 3.2.6 OPTIONAL INPUTS , The ModellSOO radar can receive various input signals fro- Nov-aids and compass. If lore than one data type is present at the radar inputs(for examples; compass and MA) a systen priority has been established in the radar's software to respond to the inputs in driving the features. The assigned priorities are set in this manner: READING: 1 Flux Sensor(NMEA OIBS'HDM, HDT, HSC' sentences) 2.‘ Nevsid Data (mm 0183 Mme inn, VTG" sentences) POSITION: I. Navaid Data(NMEA 0153 'RMC, RNA, GLL, GTD' sentences) SPEED: l. Navaid Datn(NHEA 0183 'R.MC, EMA, VTG, VHW' sentences) WAYPOINT: 1. Nnvnid DntafliMEA 0183 "ENE, BWC’ sentences) 3.2.7 POWER SUPPLY ' The Power Supply converts the +12V to the necessary DC voltages to operate the _5_ radar display unit. These output voltages include regulated , +5VDC, +24VDC,-22VI>C, —8V'DC, and SOOVAC. The power switch circult(TR21) can begin operation when the STBY/OFF switch is pressed on the Control PCB. The STBY signal toggles IC3171 output and T1121 and T1122 conducts. Then ship’ 3 lain Voltage fed to the AVR converter circuit on the scanner unit. When the XMIT/OFF key is pressed, [Gill-12 operates and TR24 and ICSB to enable the OPE output. 4 TROUBLE-SHOOTING GUlDE While the MODELISOO radar is highly reliable systens, early signs and detection of component fatigue can soletiles be spotted during regular operational checks. When; problem is observed, corrrective service should be arranged to avoid failure at critical times at see. In some cases, problems lay be cleared by a system laster reset. 4.1 MASTER RESET ~ The first step in attempting to clear a problem associated with the general opera— tion of this Radar is to perform 3 MASTER RESET. This function will clear the Radar ’5 memory and will return it to its factory sett-ings. It may then be necessary to lake the INITIAL SETTING and to re—enter the parameters previously established by the operator. CAUTION In laking checks, be alert to the high voltage points existing throughout the equipment . 4.2 RESET This reset will clear the radar’ 5 memory except INITIAL SETTING. This can be done by pressing the EBL/VRM key and while holding,then turning the power on.This should be performed anytime a component or PCB within the radar is replaced. 4.3 FUSE A fuse seldom blows out without some cause. Even if a fuse is merely replaced and does not blow again, it still may be necessary to make further checks of the cir- cuits associated with the fuse. TABLE 2 shows a table of fuses elployed in the equipment. TABLE 2 FUSES USED Location Part No. Rating Protective Type Remarks Current circuit DISPLAY E401 SA All circuit Glass tube 2.7.3 FAULT FINDING PROCEDURE Often the display on the LCD can help indicate which major circuit is at fault. It may be quicker to check-out the equipment according to the trouble shooting guide that follows (TABLE 3). In general, the column causes of trouble frequently encountered include abnormal resistances, intermittent variable resistors.switches . In the following fault finding procedure, it is assumed that only a VOM is availa— ble; the use of an oscilloscope simplifies the procedures and lay prove necessary in sole cases. TABLE 3 is the trouble shooting guide and checkout procedure,TABLE 4 shows typi— cal voltages and resistances at significant points throughout the equipment. The internal resistance of the tester used in measurements was ZOkQ/Vdc, B kQ/Vac. TABLE 2 OPERATION CHECKLIST Unit to Correct Measuring be checked Check iten condition Remarks point or Input voltage CNN—457 J1~lAZ Scanner Unit in. AVE output voltage 12V CNN—457 TM 0. Max. current 12V~20V CNN-457 TPZ a. Input voltage Refer to Note JZ—l—Z b. AVR output voltage 5V TPlfground Display Unit 0. Observation of Screen sensitivity, Sweep length, sweep linearity, sweep center, ring and illumination. d. Check of the operating controls NOTE Allowable variation of input voltage, DClO.2V716V TABLE 3 TROUBLE SHOOTING GUIDE Trouble Remedy 1—— 1. Does not start at CheckzilllSPLAY] OPERATE switch to Blown fuse F401. STBY. Check input power circuits. Check lodulator circuits in scanner. Faults of contact on tick-773. Faults of power supply circuit on CNN-457. Faults of switch cct. on EPIC-970. 2. Scanner fails to Check:[SCANNER] rotate. Fault on contact on terlinal boards. Fault of 5101 Fault of drive mechanisl. Faults of lotor control cot. on CHIN—457. 3. Scanner rotates but Fault of connection between M101. rotation of sweep is Check:[DISPLAY,SCANm] abnormal. Fault of main circuit for the Display Unit. 4. No picture on the Fault of LCD display unit or its drive screen‘ cot. Check: [DISPLAY] Fault of LCD drive cot. Fault of video circuit. Trouble Remedy cannot be controlled or no alarm sound. 5. Range rings on the Fault circuit between IF amplifier of screen but no noise receiver unit and input circuit of display and no echoes: unit video amplifier. Check: [DISPLAY] Fault of GAIN, STC control oct.. Fault of receiver unit. Fault of MIC. 6. Noise and range the If no transmission is present, check the screen but no echoes. modulator and lag'netron. Check: [SCANNER] If transmission appears to be present as indicated by the correct MAG. l reading on Tester. CNN—457 TP1=12VDC~20VDC Failure of Local Oscillator tuning. If transmission appears to be present, carry out the Local Oscillator tuning procedures and check the MIC. Fault of HIC Mixer. If no transmission is present, Whether the lead wire to magnetron is grounded to chassis. Fault of magnetron. 7. Poor sensitivity. Check:[SCANNElt,DlSPLAY] Dim echoes. Reduction of transmitting output power. Fault of lagnetron. —> Check of NAG. I reading on CMN—457—TP1. Fault of MIC Frontend. Failure of Local Oscillator tuning. Failure of INTENSITY ADJ. Fault of video amplifier circuit on ENC—970 Fault of receiver unit. 8. NO V'RM or VRM Check:[DISPLAY] cannot be controlled. Fault of CCK-773. Fault of main circuit(CHC—970). 9. NO EFL or EBL cannot Check:[DISPLAY] be controlled Fault of EEK—773. Fault of main circuit(CHC—970). 10. No alarm zone marker, CheckzlblSPLAY] Fault of CCK~773. Fault of main circuit(CMC-970). Fault of Buzzer FZl. TABLE 4 show typical voltages and resistances at significant points throughout the equipment. (A) Inter-unit terminal board Resistance Measurements shall be made under the following conditions: POWER switchsoff SlOlfon. Resistance values shall be measured between measuring point and J2f7 (E) or metal chassis, and negative terminal of the tester is grounded as a rule. The tester used for this measurement is ZOkQ/V DC, SkQ/V AC. Voltage measurements shall be made with the following display control conditions: POWER switch—on, ST-BY or TX, RAIN CLUTTER-min, GAINf , max, SFA CLUT’I‘ER—min. Ship’s power supply is DC 12V. STC~ 4MIN TUNE' - - ~CENTER 'MIN GAIN- - ---MAX P. S. = 12V (D. C.) TABLE 4 TYPICAL VOLTAGES AND RESISTANCES RADOME RADAR[RADAR1500](With inter-unit cable connected) Voltage [V] Measuring Resistance TX Remarks Point (OFF) ST—BY o. 125[nm] 1. 5[nm] t 16[nm] jl—l 00 11.0 10.5 11.0 11.5 1A -2 0° 0 0 0 0 2A ~3 521. 8Q 12. 0 12. 0 12. 0 12. 0 +12V JZ—l 52. 12k9 14. 2 15. 5 15. 6 15. 8 TUNV 72 4. 773kfl 2. 4 2.0 2. 0 24 0 TI/GS 73 0. 039 0 0 0 0 TIR 74 57. 05 Q 0 0 0 0 VD 75 O. 02 Q 0 0 0 0 VDR —6 31. 94kQ 0.01 3. 0~4. 6 0. 8~2. 0 0. 75~2. 0 BZ/TUNI —7 4. 208MQ 0 4. 2 7. 6 11. 2 PW (B) Resistance at inter-unit connector withflut connection of cables. NOTE Refer to Note given in itemOD. SCANNER UNIT(With0||t Inter-unit Cable connectEd) Measuring Point Resistance[§2] FUNCTION JI—l 0° 1A —2 00 2A "3 543. 49 +12V 12—1 7. 349MQ TUNV —2 1. 570m TI/GS —3 0. 030 TIR 74 0° VD —5 0. 03 Q VDR _6 co BZ/TUNI “7 4. 193MQ PW DISPLAY UNIT(Without Inter-unit Cable connected) Measuring Point Resistance [ Q] FUNCTION 11—1 19. 859MQ 1A —2 16. 583m 2A —3 so w —4 56. 169 VD -5 0 cm V'DR 76 o. 03 g TIR/GSR —7 4. 776kQ TI/GS —8 31A 94m BZ/TUNI v9 50. 68kQ TUNV —1o 1.143m +1zv 12—1 17. 729m SHIPS'MAINS(+) —2 17. 182m SHIPS'MAINSH —3 no NAV(+) —4 oo NANA) —5 co COMPASS (+) —6 co COMPASS (f) —7 o. 049 E
Source Exif Data:
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