Table of Contents
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Table of Contents
Related Manuals for Furuno MODEL 1622
Summary of Contents for Furuno MODEL 1622
- Page 1 MARINE RADAR MODEL 1622...
- Page 2 9 - 5 2 , A s h i h a r a - c h o , N i s h i n o m i y a , J a p a n T e l e p h o n e : 0 7 9 8 - 6 5 - 2111 T e l e f a x : 0 7 9 8 - 6 5 - 4 2 0 0...
- Page 3 The warning label shown below is attached to the display unit. Do not remove this label. If the label is peeling off or is illegible, contact FURUNO for replacement. WARNING To avoid electrical shock, do not remove cover. No user-serviceable parts inside.
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Page 4: Table Of Contents
INTRODUCTION ...iii SYSTEM CONFIGURATION ...iv PRINCIPLE OF OPERATION ...v 1. OPERATION...1 1.1 Control Description...1 1.2 Indications and Markers ...2 1.3 Turning the Radar On/Off ...3 1.4 Transmitting, Stand-by ...3 1.5 LCD Tone and Brilliance ...3 1.6 Selecting the Range ...3 1.7 Receiver Sensitivity ...4 1.8 Suppressing Sea Clutter...4 1.9 Suppressing Rain Clutter...5... -
Page 5: Introduction
The main features of the MODEL 1622 are Daylight viewing radar specially designed for small craft and sailing yachts. Traditional FURUNO reliability and quality in a compact, light-weight and low-cost radar. -
Page 6: System Configuration
DISPLAY UNIT RDP-125 RECTIFIER PR-62 SHIP'S MAINS 100/110/115/220/230 VAC SYSTEM CONFIGURATION ANTENNA UNIT RSB-0060 SIGNAL CABLE (Select one.) MJ-A10SPF0003-050 (5 m) MJ-A10SPF0003-100 (10 m) MJ-A10SPF0003-150 (15 m) MJ-A10SPF0003-200 (20 m) 03S9175 (30 m, option for 24 VDC only) NMEA 0183 Cable MJ-A6SPF0012-050 (5 m) MJ-A6SPF0012-100 (10 m) SIGNAL CABLE ASSY. -
Page 7: Principle Of Operation
What is Radar? The term RADAR is an acronym meaning RAdio Detection and Ranging. It is a device which measures the time it takes for a pulsed signal to be reflected back from an object. How Ships Determined Position Before Radar The use of echoes to determine position did not begin with radar. - Page 8 Targets Own ship (radar) (A) Bird's eye view (B) Radar picture of (A) of situation Heading Line Range and bearing to a target, relative to own ship, are readable on the screen. Note: The radar screen does not discriminate "bow" or "stern."...
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Page 9: Operation
1.1 Control Description Shifts cursor, EBL, VRM; selects items Opens/closes Turns EBL Decreases Adjusts receiver Suppresses rain clutter. Echo trails Adjusts LCD tone and brilliance. TrackDisk on menus. MENU GUARD the menu. HM OFF on/off. RING the range. RANGE GAIN sensitivity. -
Page 10: Indications And Markers
1.2 Indications and Markers Range Range ring interval ZOOM WATCHMAN Zoom (flashing) Watchman Guard zone Cursor EBL bearing 45. ˚ VRM range 1.25 Figure 1-2 Indications and markers Target trails setting 3M TRAIL Guard alarm (IN or OUT) G (IN) Rain clutter suppressor Echo stretch Interference rejector... -
Page 11: Turning The Radar On/Off
1.3 Turning the Radar On/Off The [POWER] key turns the radar on/off. When turning on the power, the control panel lights and the timer displays the time remaining for warm up of the magnetron (device which transmits radar pulses), counting down from 1:00 to 0:00. Quick Start Provided that the radar was once in use with the transmitter tube (magnetron) still warm,... -
Page 12: Receiver Sensitivity
1.7 Receiver Sensitivity The [GAIN] key adjusts the sensitivity of the receiver. It works in precisely the same manner as the volume control of a broadcast receiver, amplifying the signals received. You can adjust the sensitivity manually, or let the unit do it automatically. -
Page 13: Suppressing Rain Clutter
Automatic sea clutter control 1. Press the [STC] key once or twice to show the dialogue shown in Figure 1-8. AUTO STC MOD HIGH Figure 1-8 Dialogue for automatic adjustment of STC 2. Press to set level desired: 1, Low; 2, Normal;... -
Page 14: Heading Marker
1.12 Heading Marker The heading marker indicates the ship’s heading and it is the solid line which appears at zero degrees on the bearing scale. To temporarily erase the heading marker to look at targets existing dead ahead of own ship, press the [MENU] and [GUARD] keys together. -
Page 15: Control Panel Brilliance
Menu Item ECHO STRETCH INT. REJECT NAV DATA VIDEO WATCHMAN DIMMER DSPL ON STBY TRAIL TIME TRAIL BRILL RANGE 1.14 Control Panel Brilliance 1. Press the [MENU] key. 2. Select DIMMER. 3. Select level desired; 3 is the highest level of illumination. -
Page 16: Measuring The Bearing
1.16 Measuring the Bearing The bearing to a target can be measured by using the cursor or the EBL. Measuring bearing by the EBL 1. Press the [EBL] key to turn on the EBL. 2. Within 10 seconds after turning on the EBL; that is, while "EBL"... -
Page 17: Target Trails
1.19 Target Trails Target trails are simulated afterglow of target echoes that represent their movements relative to own ship. 3M TRAIL Trail time (3 min), echo trail ON (TRAIL) Figure 1-17 Target trails Starting target trail Press the [TRAIL] key to start the echo trail function. -
Page 18: Interference Rejector
Setting a guard zone 1. Operate the TrackDisk to place the cursor at the top left corner of the zone and press the [GUARD] key. 2. Operate the TrackDisk to place the cursor at the bottom right corner of the zone and press the [GUARD] key. -
Page 19: Echo Stretch
1.22 Echo Stretch On long ranges target echoes tend to shrink in the range direction, making them difficult to see. On short and medium ranges such as 1.5, 3 and 6 nm range scales, the same sized targets get smaller on screen as they approach own ship. This is due to the inherent property of the radiation pattern produced by the antenna. -
Page 20: Navigation Data
1.24 Navigation Data With navigation data input in NMEA 0183 format, navigation data can be displayed at the screen bottom. Navigation data includes position, course, speed, and range and bearing to destination waypoint (if set on navaid). Waypoint is shown on the screen by a “lollipop mark,”... -
Page 21: Echoes In Black Or White
Note 1: External sensor must be capable of outputting such data to select it on this radar. Note 2: A location is blank when there is no corresponding data. Note 3: To receive data from multiple equipment, all data must be combined into one data line with a data-mixing device. -
Page 23: Radar Observation
This is determined by pulselength only. Practically, a 0.08 microsecond pulse offers the discrimination better than 35 m as do so with all FURUNO radars. Test targets for determining the range and bearing resolution are radar reflectors having an... -
Page 24: False Echoes
Range measurement Measurement of the range to a target is also a very important function of the radar. Generally, there are two means of measuring range: the fixed range rings and the variable range marker (VRM). The fixed range rings appear on the screen with a predetermined interval and provide a rough estimate of the range to a target. -
Page 25: Sart (Search And Rescue Transponder)
Shadow sectors Funnels, stacks, masts, or derricks in the path of the antenna block the radar beam. If the angle subtended at the antenna is more than a few degrees, a non-detecting sector may be produced. Within this sector targets can not be detected. -
Page 26: General Remarks On Receiving Sart
Radar bandwidth This is normally matched to the radar pulselength and is usually switched with the range scale and the associated pulselength. Narrow bandwidths of 3-5 MHz are used with long pulses on long range and wide bandwidths of 10-25 MHz with short pulses on short ranges. Any radar bandwidth of less than 5 MHz will attenuate the SART signal slightly, so it is preferable to use a medium bandwidth to ensure... -
Page 27: Racon (Radar Beacon)
Any radar bandwidth of less than 5 MHz will attenuate the SART signal slightly, so it is preferable to use a medium bandwidth to ensure optimum detection of the SART. Radar side lobes As the SART is approached, sidelobes from the radar antenna may show the SART responses as a series of arcs or concentric rings. -
Page 29: Maintenance, Troubleshootiing
3. MAINTENANCE, TROUBLESHOOTING 3.1 Maintenance Regular maintenance is important for good performance. A maintenance program should be established and should at least include the items listed in Table 3-1. Period Item Fixing bolts for antenna unit Antenna unit cleanliness 3 to 6 Antenna unit months cover... -
Page 30: Troubleshooting
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Page 31: Specifications
(5) Intermediate Frequency (6) Tuning (7) Receiver Front End (8) Bandwidth (9) Duplexer (10) Time of Heat-up MODEL 1622 PPI Daylight display, raster scan, 4 tones in monochrome 1, 1.5, 2 0.3 s (medium) 1200 Hz nominal Better than 50 m Within 7.7°... - Page 32 4. DISPLAY UNIT (1) Picture Tube (2) Display Pixels (3) Range, Range Interval, Number of Rings Range (NM) 0.125 0.25 Ring Interval (NM) 0.0625 0.125 0.125 0.25 0.25 0.5 0.5 1 1 2 2 3 4 Number of Rings (4) Markers (5) Alphanumeric Indications (6) Input Data Own ship’s position:...
- Page 33 (3) Waterproofing Scanner Unit Display Unit (4) Bearing Vibration 6. POWER SUPPLY (1) Power Supply 7. DIMENSIONS AND MASS 8. COATING COLOR (1) Display Unit (2) Scanner Unit 9. COMPASS SAFE DISTANCE (1) Display Unit (2) Scanner Unit IPX6 IPX5 IEC60945 12/24 VDC: 3.2/1.3 A, 35 W approx.
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Page 34: Index
Bearing measurement ...8 Control description ...1 Cursor ...5 Depth unit ...12 DIMMER key...7 EBL (Electronic Bearing Line)...8 EBL key ...8 Echo hue...13 Echo stretch ... 11 False echoes...16 FTC...5 Fuse replacement...21 GAIN key ...4 Guard alarm ...9 GUARD key ...10 Heading marker...6 Indications...2 Interference rejector ...10...