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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Create Date                     : 2000:01:11 16:11:45
Title                           : .橡.0_TITLE.PDF
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