MARINE RADAR MODEL 1932 MARK-2/1942 MARK-2
C Yo u r L o c a l A g e n t / D e a l e r 9-52, Ashihara-cho, Nishinomiya, Japan Te l e p h o n e : Te l e f a x : 0 7 9 8 - 6 5 - 2 111 0798-65-4200 All rights reserved. Printed in Japan PUB. No. OME-34620 (YOSH) MODEL1932/1942 MARK-2 FIRST EDITION C : : A U G. 1 9 9 8 APR.
SAFETY INSTRUCTIONS DANGER Stay away from transmitting scanner. The radar scanner emits microwave radiation which can be harmful to the human body, particularly the eyes. Never look directly into the scanner radiator from a distance of less than 1 m when the radar is in operation. Radio Frequency Radiation Hazard The radar scanner emits electromagnetic radio frequency (RF) energy which can be harmful, particularly to your eyes.
CAUTION WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Do not use the equipment for other than its intended purpose. Only qualified personnel should work inside the equipment. Use of the equipment as a stepping stool, for example, can result in personal injury or equipment damage. Turn off the radar power switch before servicing the scanner unit. Post a warning sign near the switch indicating it should not be turned on while the scanner unit is being serviced.
FOREWORD Features Congratulations on your choice of the FURUNO MODEL 1932/1942 MARK-2 Marine Radar. We are confident you will see why the FURUNO name has become synonymous with quality and reliability. Your radar has a large variety of functions, all contained in a remarkably small cabinet. The main features of the MODEL 1932/1942 MARK-2 are: For over 50 years FURUNO Electric Company has enjoyed an enviable reputation for innovative and dependable marine electronics equipment.
TABLE OF CONTENTS FOREWORD .............................. iii MENU TREE ............................... v TABLE OF CONTENTS BY INDICATION, MARKER ............. vi SYSTEM CONFIGURATION .... vii 1. PRINCIPLE OF OPERATION 1.1 What is Radar? ............................... 1-1 1.2 How Ships Determined Position Before Radar ................................. 1-1 1.3 How Radar Determines Range ...... 1-1 1.4 How Radar Determines Bearing..... 1-1 1.5 Radar Wave Speed and Scannner Rotation Speed ....................
MENU TREE MENU KEY RINGS (Off, 1, 2, 3, max) EBL OFFSET (Off, On) SHIFT (Off, On) ZOOM (Off, On) MODE (HU, CU, NU, TM) DISP DATA ECHO TRAIL (Off, On) ECHO STRTCH (Off, ES1, ES2) ARP-10 MENU OTHER MENU (Options) 1. Display 2. All Cancel 3. Vector ref 4. Vector Length 5. History 6. CPA SET 7. TCPA SET 8. AUTO ACQ 1. Panel Dimmer (1, 2, 3, 4) 2. Mark Brill (1, 2, 3, 4) 3. HD Mark (1, 2, 3, 4) 4. Characters (1, 2, 3, 4) 5. Trail Tone (Single, Multi) 6. Int Reject (Off, 1, 2, 3) 7.
TABLE OF CONTENTS BY INDICATION, MARKER Tuning indicator (P.3-7) Echo trail elapsed time (P.3-3) Heading (requires heading data) Heading marker (P.2-5) Echo trail time (P.3-3) Guard Zone (P.3-4) Range (P.2-3) Range ring interval (P.2-3) Pulselength (P.2-3) Display mode (P.3-1) . 125NM . 0625 HDG 234.5¡ TRAIL 25 : 38 SP HU AUTO 30M G (OUT) ZOOM ES1 OFFCENTER Zoom (P.2-8) Echo Stretch (P.3-2) Off center (P.2-7) Cursor (P.2-5, 2-6) EBL2 (P.2-6) Guard zone area (P.3-5) EBL1 (P.2-6) Range ring (P.
SYSTEM CONFIGURATION Scanner Unit MODEL 1932 MARK-2 XN10A-RSB-0070-064 (24 rpm) XN10A-RSB-0073-064 (48 rpm) MODEL 1942 MARK-2 XN12A-RSB-0070-059 (24 rpm) XN12A-RSB-0073-059 (48 rpm) Navigation device IEC 61162* (In/Out) Video Sounder Gyrocompass IEC 61162* (In/Out) Gyro Converter AD-100 Integrated Heading Sensor PG-1000 *Equivalent to NMEA 0183 Display Unit Radar Plotter RP-110 RDP-118 Remote Display FMD-811/1800 Auto Plotter ARP-10 (24 rpm only) External Alarm Buzzer OP03-21 12 VDC: 10A 24/32 VD
1. PRINCIPLE OF OPERATION 1.1 What is Radar? The term “RADAR” is an acronym meaning Radio Detection And Ranging. Although the basic principles of radar were developed during World War II, echoes as an aid to navigation is not a new development. 1.2 How Ships Determined Position Before Radar Before the invention of radar, when running in fog near a rugged shoreline, ships would sound a short blast on their whistles, fire a shot, or strike a bell.
Heading marker Targets A D B A D B C C Own ship in center Own ship (radar) (A) Bird's eye view of situation (B) Radar picture of (A) Figure 1-1 How radar works 1-2 Range and bearing of a target, relative to own ship, are readable on the PPI.
2. BASIC OPERATION 2.1 Control Description Requires Auto Plotter ARP-10 Brief press: Displays the data of target selected with the cursor. Long press: Terminates plotting of the target selected with the cursor. Omnipad Shifts cursor, VRM and EBL; selects items and options on menu. Opens/closes menus. CANCEL ACQ ENTER Selects EBL1/EBL2/VRM1/VRM2. MENU GUARD Control: Adjusts sensitivity. Switch: Temporarily erases heading marker (and north marker if displayed). SELECT Selects radar range.
2.2 Turning the Radar On/Off 2.4 Stand-by Press the [POWER] key to turn the radar on or off. When you won’t be using the radar for an extended period, but you want to keep it in a state of readiness, place it in stand-by by pressing the [STBY TX] key. The display shows “STBY,” navigation data, or goes into the economy mode depending on menu setting. (More on menu operation later.
Note1: Availability of a particular display item depends on incoming data. Note2: When Range to Waypoint reaches 0.1 nm, the WPT marker jumps to dead ahead even though a difference may exist between heading and BRG to WPT. Note3: When cross track error exceeds 1 nm on either side, the XTE mark starts blinking. 2.
Adjusting the A/C SEA control The proper setting of the A/C SEA should be such that the clutter is broken up into small dots, and small targets become distinguishable. If the control is set too low, targets will be hidden in the clutter, while if it is set too high, both sea clutter and targets will disappear from the display. In most cases adjust the control until clutter has disappeared to leeward, but a little is still visible windward. 1.
2.10 Erasing the Heading Marker, North Marker The heading marker or north marker (available with gyrocompass connection) may occasionally mask a target. To view the target, you can temporarily erase the heading marker and north marker by pressing and holding down the [GAIN (HM OFF)] control. Release the control to re-display the markers. Measuring range by VRM 1. Press the [EBL/VRM SELECT] key to circumscribe a VRM readout (at the bottom right-hand corner).
2.12 Measuring the Bearing There are two ways to measure the bearing to a target: by the cursor, and by the EBL (Electronic Bearing Line). Note: The bearing readout for the EBL andthe cursor can be displayed in relatiive or true bearing (true bearing requires heading sensor input). For north up and course up display modes the bearing reference is always true. For details see the next chapter.
6.0 NM 2.0 EBL1 EBL1 origin (initial position of target) VRM1 A Target moved here. EBL1 bearing B VRM1 Offset EBL (EBL1) EBL 70.0° R VRM 6.0 NM VRM1 range Figure 2-9 Predicting collision course by using the offset EBL Measuring range and bearing between two targets The procedure which follows shows how to measure the range and bearing between target “A” and target “B” in Figure 2-10. 1. Operate the omnipad to place EBL1’s origin (cursor) on the center of target “A.” 2.
2.15 Zoom The zoom feature allows you to double the size of the area between your vessel and any location within the current range to take a closer look at an area of interest. 1. Select location with the cursor. 2. Press and hold down the [F1 (A/C SEA)] control about two seconds if its function is set for ZOOM (default setting), or select ZOOM from the menu. Zoom appears at the top right corner when the ZOOM function is on. Cursor Cursor 1 Place cursor where desired. 2 Press [F1] to zoom.
3. MENU OPERATION 3.1 Basic Menu Operation The menu mostly contains less-often used functions which once preset do not require regular adjustment. To open or close the menu, press the [MENU] key. You can select items and options from the menu with the omnipad. The complete menu appears on page v. 1. Press the [MENU] key to display the main menu. SSel by omnipad & press ENT.S RINGS MODE EBL OFFSET SHIFT DISP DATA Change brill from 3 to max.
North up North is at the top of the display and the heading marker moves with ship’s heading. This mode is useful for determining ship’s position and as a navigation monitor on a nautical chart. The picture is stabilized against yaw of vessel, thereby reducing smear of target echoes. Note1: This function magnifies not only targets but also sea clutter and radar interference. For this reason be sure the sea clutter and radar interference are sufficiently suppressed before activating the echo stretch.
Fixed time trail 1. When the elapsed time clock counts up to the trail time selected, the elapsed time display freezes. 2. The oldest portions of trails are erased so only the latest trail, equal in length to the trail time selected, is shown. 3. Trail continues. For example, the one minute trail time is selected. When the elapsed time clock counts up to 60 seconds, the elapsed time display freezes at “60,” but the latest one minute of trail are erased and then trail continuous. 3.
3. Select “6. Int Reject.” Selection of guard zone type 4. Select level desired by operating the omnipad. The guard alarm can be set to sound when a target either enters or exits the guard zone. You can select which type of guard alarm you want through the menu. 5. Press the [ACQ/ENTER] key. 6. Press the [MENU] key to close the menu. IR1, IR2 or IR3 appears at the bottom right corner on the display when the interference rejection circuit is turned on. 3.
3. Operate the omnipad to set the cursor on point C (or D). See Figure 3-8 (3). 4. Press the [GUARD] key. The asterisk disappears. See Figure 3-8 (4). A * G (IN) A D C B Drag cursor here. (1) Mentally create the guard zone to set. ¡ A target echo does not always mean a landmass, reef, ships or surface objects but can imply returns from sea surface or precipitation.
Turning on watchman 1. Create a guard zone (usually 360 degrees) with the guard alarm function. 2. Press the [MENU] key. (If the navigation input includes destination data, the waypoint marker, shown by a dashed ring with a line extending from it to the screen center appears. This marker can be turned on/off the “OTHER MENU”) 3. Select “OTHERS MENU.” 4. Press the [ACQ/ENTER] key. 5. Select “15. Watchman.” 6. Operate the omnipad to select watchman rest period; 5 minutes, 10 minutes or 20 minutes.
3.10 OTHER MENU Description The table below summarizes the OTHER menu. Table 3-2 OTHER MENU Description Item Description 1. Panel Dimmer Selects level of panel backlight. 2. Mark Brill Selects brilliance of VRM, EBL, cursor, guard zone and WP marker. 3. HD Mark Selects brilliance of heading marker. 4. Characters* Selects brilliance of characters. 5. Trail Tone Selects brilliance of echo trails. 6. Int Reject Selects level of interference rejection. 7. Pulselength Selects pulselength for 1.
3.11 Function Controls 3.12 Suppressing Noise The function controls (F1 and F2) work like the auto-dialing feature of a telephone, automatically executing the function assigned to them. The function can be turned off by pressing appropriate function control again. Electrical noise can be suppressed by turning on “8. NOISE REJ” on the OTHERS menu. 3.13 Adjusting Brilliance of Markers Default settings F1: Shift (brief press) or Zoom (long press) F2: Ring brilliance “2.
4. FALSE ECHOES Occasionally false echoes appear on the screen at positions where there is no target. In some cases the effects can be reduced or eliminated. The operator should familiarize himself or herself with the appearance and effects of these false echoes, so as not to confuse them with echoes from legitimate contacts. 4.1 Multiple Echoes Multiple echoes occur when a short range, strong echo is received from a ship, bridge, or breakwater.
4.3 Indirect Echoes 4.4 Blind and Shadow Sectors Indirect echoes may be returned from either a passing ship or returned from a reflecting surface on your own ship, for example, a stack. In both cases, the echo will return from a legitimate contact to the scanner by the same indirect path. The echo will appear on the same bearing of the reflected surface, but at the same range as the direct echo. Figure 4-3 illustrates the effect of an indirect echo.
4.5 SART (Search and Rescue Transponder) A Search and Rescue Transponder (SART) may be triggered by any X-Band (3 cm) radar within a range of approximately 8 n.miles. Each radar pulse received causes it to transmit a response which is swept repetitively across the complete radar frequency band. When interrogated, it first sweeps rapidly (0.4 µs) through the band before beginning a relatively slow sweep (7.5 µs) through the band back to the starting frequency.
5. MAINTENANCE & TROUBLESHOOTING This chapter tells you how to keep your radar in good working order. Before reviewing this chapter please read the safety information which follows. DANGER Turn off the power before performing any maintenance or troubleshooting procedure. Hazardous voltages can shock, burn or cause death. Only qualified personnel totally famillier with electrical circuits should work inside the units. 5.1 Preventive Maintenance Regular maintenance is important for good performance.
5.3 Troubleshooting Table 5-2 contains simple troubleshooting procedures which you can follow to try to restore normal operation. If you cannot restore normal operation, do not attempt to check inside any unit of the radar system. Any repair work is best left to a qualified technician. Table 5-2 Troubleshooting table If... But... Then... you pressed the the control panel does • try adjusting the control panel back[POWER] key to turn not light lighting on the OTHERS menu.
5.4 Self Test The self test facility checks the keyboard, ROM and RAM for proper operation. 6. Press the [ACQ/ENTER] key to check the display circuit. The following pattern should appear. 1. Press the [MENU] key. 2. Select “OTHER MENU”. 3. Select “23. Self Test” and press the [ACQ/ ENTER] key. The following display appears. [ Self Test ] Key test: Press each key and check on-screen indication lights. ARP-10 TEST ROM OK 18590271xx RAM OK SPEED OK NAV 0.0KT COURSE OK 167.
6. OPERATION OF ARP-10 (OPTION) WARNING No one navigational aid should be relied upon for the safety of vessel and crew. The navigator has the responsibility to check all aids available to confirm position. Electronic aids are not a substitute for basic navigational principles and common sense. • This auto plotter automatically tracks an automatically or manually acquired radar target and calculates its course and speed, indicating them by a vector.
6.1 General The Auto Plotter ARP-10 is an optional circuit board which is accommodated in the display unit of this radar (24 rpm only) radars. It requires heading data to function. The Auto Plotter permits manual or automatic acquisition and automatic tracking of up to 10 radar targets. An internal microprocessor calculates target data such as speed and course and displays the results in alphanumeric data and by vector.
3. Select “ARP-10 MENU.” 5. Select the menu item “1. Display.” 4. Press the [ACQ/ENTER] key to display the ARP menu. 6. Select “On.” 7. Press the [ACQ/ENTER] key. 8. Press the [MENU] key to close the menu. [ ARP MENU ] Select item by omnipad and press ENTER key. 1. Display 2 . All Cancel 3 . Vector Ref 4 . Vector Length 5 . History 6 . CPA Set 7 . TCPA Set 8 . Auto ACQ Off Deactivating the auto plotter On To deactivate the Auto Plotter; Rel True 30S IM 3M 6M 15M 30M Off 15S 30S 1M 2M 3M 6M Off 0.
6.3 Acquiring Targets Manual acquisition Follow the steps below to manually acquire a target. Up to 10 targets can be manually acquired. 1. Place the cursor (+) on a target of interest by operating the omnipad. 2. Press the [ACQ/ENTER] key. The plot symbol changes its shape according to the status as below. A vector appears in about one minute after acquisition indicating the target's motion trend. If the target is consistently detected for three minutes, the plot symbol changes to a solid mark.
Follow the steps shown below to activate the auto acquisition area. 4. Press the [ACQ/ENTER] key. 5. Press the [MENU] key to close the menu. 1. Open the “ARP-10 MENU.” 2. Select “8. Auto ACQ.” 3. Select “On.” 4. Press the [ACQ/ENTER] key. CAUTION At the speed under 5 kts the target data is displayed with a delay because of filtration. 5. Press the [MENU] key to close the menu.
6.5 Mode and Length of Vectors True or relative vector (vector mode) Target vectors are displayed relative to own ships reading (Relative) or with reference to North (True). Own ship does not have a vector in relative mode. 6.
CPA/TCPA alarm ranges must be set up properly taking into consideration the size, tonnage, speed, turning performance and other characteristics of own ship. Follow the steps shown below to set the CPA/ TCPA alarm ranges: 1. Open the “ARP-10 MENU.” 2. On the “CPA Set” line, select a CPA limit desired. (Off, 0.5, 1, 2, 3, 5, 6 nm) 3. Press the [ACQ/ENTER] key. 4. On the “TCPA Set” line, select a TCPA limit desired. (30s, 1, 2, 3, 4, 5, 6, 12M) 5. Press the [ACQ/ENTER] key. 6.
SPECIFICATIONS OF MARINE RADAR MODEL 1932/1942 MARK-2 1. GENERAL (1) Indication System PPI Daylight display, raster scan, 8 tones in monochrome (2) Range, Pulselength (PL) & Pulse Repetition Rate (PRR) Range (nautical miles) PL PRR 0.125 SP 2100 Hz 0.25 0.5 0.75 600 Hz 1.5 2 3 4 6 8 12 16 24 36 48 64 0.08 µs 0.3 µs MP 1200 Hz LP 1 0.
Tx pulselength 0.08 µs and 0.3 µs: 25 MHz (8) Bandwidth Tx pulselength 0.8 µs: 3 MHz (9) Duplexer Circulator with diode limiter 4. DISPLAY UNIT (1) Indication System PPI Daylight display, raster scan, 8 tones in monochrome (2) Picture Tube 10 inch rectangular monochrome CRT effective display area more than 150 mm (3) Range, Range Interval, Number of Rings Range (NM) 0.125 0.25 1 1.5 2 3 4 6 8 12 16 24 36 48 64 Ring Interval (NM) 0.0625 0.125 0.125 0.25 0.25 0.5 0.
Water temperature: MTW>MDA Time: ZDA Cross track error: RMB>XTE>APB *1: calculate by magnetic drift. (7) Output Data NMEA0183 (Version1.5/2.0), RS-422 TLL (target data) and RSD 5. ENVIRONMENTAL CONDITION (1) Ambient Temperature Scanner Unit: -25°C to +70°C Display Unit: -15°C to +55°C (2) Relative Humidity 95 % or less at +40°C (3) Waterproofing Scanner Unit: IPX6 Display Unit: IPX4 6. POWER SUPPLY & POWER CONSUMPTION (1) Power Supply 12/24/32 VDC (10.8 to 41.
Index A Acquisition ............................................... A/C AUTO key ......................................... ACQ/ENTER key ..................................... A/C RAIN control .................................... A/C SEA control .................................... Auto plotter .............................................. N 6-4 2-4 6-2 2-4 2-3 6-2 B Bearing measurement ............................. 2-6 Blind sectors ............................................ 4-4 Brilliance ............
